Do you have a passion for decentralized systems and the potential they hold to revolutionize industries? Are you excited by the challenge of designing and developing blockchain-based solutions that enable secure, transparent, and efficient transactions? If you’re looking to shape the future of blockchain technology and drive innovative applications in areas like finance, supply chain, and beyond, then our client has the perfect role for you. We’re seeking a Blockchain Developer (aka The Decentralization Architect) to design, develop, and implement blockchain technologies that enable next-generation decentralized solutions.

As a Blockchain Developer at our client, you’ll work closely with software engineers, cryptographers, and product teams to create blockchain-powered applications that solve real-world problems. From smart contracts and decentralized apps (dApps) to building secure blockchain networks, you’ll be at the forefront of transforming industries with distributed ledger technology.

Key Responsibilities:

1. Design and Develop Blockchain Solutions:

• Build and deploy blockchain-based applications, smart contracts, and decentralized systems. You’ll work with platforms like Ethereum, Hyperledger, or Polkadot to create secure, efficient, and scalable solutions for a range of use cases.

• Write, test, and deploy smart contracts on blockchain platforms. You’ll ensure that contracts are secure, efficient, and bug-free, using languages like Solidity, Rust, or Vyper, and you’ll conduct code audits to prevent vulnerabilities.

• Develop and implement consensus algorithms (PoW, PoS, DPoS, etc.) and blockchain protocols that ensure the security, scalability, and decentralization of blockchain networks. You’ll work on optimizing network performance and ensuring high transaction throughput.

• Work closely with front-end and back-end teams to integrate blockchain technology into decentralized applications (dApps). You’ll design APIs, develop SDKs, and enable seamless interactions between the blockchain and user interfaces.

• Implement cryptographic algorithms that ensure the integrity and privacy of blockchain transactions. You’ll work with encryption methods like elliptic curve cryptography (ECC) and hash functions to secure data on the blockchain.

• Monitor, maintain, and upgrade blockchain networks and systems to ensure they remain secure and functional. You’ll ensure nodes are properly synchronized, handle network forks, and optimize the blockchain for performance.

• Stay current with the latest developments in blockchain technology, including layer 2 solutions, sidechains, and decentralized finance (DeFi). You’ll experiment with new frameworks and protocols to improve blockchain efficiency and scalability.

Required Skills:

• Blockchain Development Expertise: Strong experience in blockchain development, including working with platforms such as Ethereum, Hyperledger, or Polkadot. You’re skilled in designing decentralized systems and implementing smart contracts.
• Smart Contract Programming: Proficiency in programming languages for smart contracts, such as Solidity, Rust, or Vyper. You know how to write, deploy, and audit smart contracts to ensure security and efficiency.
• Cryptography and Security: Solid understanding of cryptographic principles, including encryption techniques and consensus mechanisms like PoW, PoS, or Byzantine fault tolerance. You’re familiar with securing blockchain networks and preventing attacks.
• Programming and Software Development: Proficiency in programming languages such as Python, JavaScript, or Go. You have experience working with APIs, SDKs, and integrating blockchain systems into decentralized applications (dApps).
• Collaboration and Problem Solving: Strong problem-solving skills and the ability to work effectively with cross-functional teams. You can collaborate with engineers, product managers, and business stakeholders to design blockchain solutions that meet business needs.

Educational Requirements:

• Bachelor’s or Master’s degree in Computer Science, Engineering, Cryptography, or a related field. Equivalent experience in blockchain development is highly valued.
• Certifications or additional coursework in blockchain, cryptography, or decentralized systems are a plus.

Experience Requirements:

• 3+ years of experience in blockchain development, with hands-on experience building and deploying blockchain solutions.
• Proven experience writing and auditing smart contracts, developing decentralized applications, and working with blockchain protocols.
• Experience with cloud-based blockchain services and tools (AWS Blockchain, Azure Blockchain) is highly desirable.

• Health and Wellness: Comprehensive medical, dental, and vision insurance plans with low co-pays and premiums.
• Paid Time Off: Competitive vacation, sick leave, and 20 paid holidays per year.
• Work-Life Balance: Flexible work schedules and telecommuting options.
• Professional Development: Opportunities for training, certification reimbursement, and career advancement programs.
• Wellness Programs: Access to wellness programs, including gym memberships, health screenings, and mental health resources.
• Life and Disability Insurance: Life insurance and short-term/long-term disability coverage.
• Employee Assistance Program (EAP): Confidential counseling and support services for personal and professional challenges.
• Tuition Reimbursement: Financial assistance for continuing education and professional development.
• Community Engagement: Opportunities to participate in community service and volunteer activities.
• Recognition Programs: Employee recognition programs to celebrate achievements and milestones.

Apply Now:

Apply Now:

Apply Now:

Coinbase Infrastructure Security is seeking a leader to build systems and integrations that support the prevention, identification, tracking, reporting, and remediation of vulnerabilities. As the engineering manager of Developer Security (DevSec), you will lead a team of software engineers who partner with program owners, technical subject matter experts, and cross-functional partners to deliver services and security controls that ensure the safety of Coinbase software and infrastructure. We deliver a delightful experience to Coinbase developers by prioritizing safe defaults, automated detection and remediation, and highly relevant and contextual findings. Your impact is quantified through measurable risk reduction that minimizes unnecessary friction and toil.

What you’ll be doing:

• Build and operate services and system integrations that scan, track, and report vulnerabilities to Coinbase developers.
• Partner with engineering leaders on cross-functional initiatives to improve the safety of Coinbase infrastructure and development platforms.
• Coach your direct reports to have a positive impact on the organization and chart a fulfilling career path. Set clear targets and objectives, and establish KPIs for the team
• Collaborate with engineers, managers, and program managers to turn our vision into a tangible roadmap every quarter
• Be a thoughtful technical voice and support your team in making diligent architectural and operational decisions
• Work with our talent organization to source and hire amazing engineers who will expand the Coinbase culture and product

What we look for in you:

• At least 7 years of experience in software engineering.
• At least 2 years of experience in security engineering, security architecture, or application security.
• At least 2 years of engineering management experience.
• You possess a strong understanding of what constitutes high-quality code and effective software engineering processes, creating an environment that fosters these principles.
• An execution-focused mindset, capable of navigating through ambiguity and delivering results.
• An ability to balance long-term strategic thinking with short-term planning.
• Experience in creating, delivering, and operating distributed systems at scale.
• You can be hands-on when needed – whether that’s writing/reviewing code or technical documents, participating in on-call rotations and leading incidents, or triaging/troubleshooting bugs.
• Your passion for building an open financial system that brings the world together drives you to excel in this role.

Nice to haves:

• You have designed, built, scaled and maintained production services and integrations for vulnerability risk reduction, including scanners, issue management platforms, and/or secure CI/CD infrastructure.
• You have worked with Golang, Docker, and AWS or GCP.

P60006

Apply Now:

Apply Now:

Apply Now:

About

We’re building Omni: a platform allowing developers to deploy applications across all rollups without fragmenting liquidity. We’re looking for early team members to help us bring this ambitious vision to life.

We’re a team who already built a platform that processed over $70M leading to our $18M fundraise from top investors including Pantera, Two Sigma Ventures, Coinbase Ventures alongside angel investors including Stani Kulechov (founder of Aave), Sandeep Nailwal (cofounder of Polygon) and more. In addition to this we have over $4B deposited to secure Omni on mainnet. We are growing rapidly and we need ambitious and experienced team members to join us to help scale Ethereum’s future.

About the role

Engineers who join the team in this role will be responsible for designing and implementing foundational components of the Omni stack. This involves working heavily with Golang, Tendermint, Eigenlayer, interoperability components, and off-chain services while also having responsibilities to collaborate with the wider engineering team to improve our overall architecture and code quality.

Responsibilities

• Develop our core software stack – consensus and execution layers, Eigenlayer integration, and messaging protocol – from the design stage all the way to production ready implementations. Primarily in golang.
• Build a modular interoperability standard that is highly secure while also being flexible enough to incorporate future innovations in the interoperability space
• Build a network of validators that leverages restaked $ETH to secure the Omni chain
• Design, build, test, deploy, and maintain our node software and off-chain coordinating agents to power our distributed network
• Improve the design of peer’s architecture through thoughtful, professionally communicated feedback.
• Contribute to open source projects and play a role in building out the crypto ecosystem at large.

Requirements

• 3-7+ years of experience in a backend software engineering role with Go
• 2-4+ years of experience developing a blockchain client / node that launched mainnet in production with > $50m at stake
• Experience architecting, deploying, and maintaining a production system with > $100m and/or 1m users at stake
• Extensive experience managing the software development life cycle for medium to large projects
• Experience with AWS, GCP or similar cloud providers
• Desire to keep up with modern best practices in software development and crypto, and shape our tech stack as we build out new systems and services
• Location: Must be in the New York (EST) or Europe (CET) time zones.
• Overlap hours: Available daily from 9 AM to 12 PM EST for team collaboration.

Competencies

• Autonomous — specifically seeks to take greater ownership and responsibility and thrives in their personal growth by doing so
• Action oriented — we are looking for people who take action by default, consistently driving forward progress without asking for permission
• An engineer in both thought and implementation — they must be able to design architecture and see it through to implementation
• Adaptable — thrives in ambiguity, able to quickly iterate and push forward as the business dynamically expands
• Highly intelligent — learns quickly and can participate in abstract intellectually engaging conversations
• Effective communicator — clearly articulates ideas and engages in debates in a productive manner that leads us to making better decisions

Nice to Haves

• Experience scaling out infrastructure for distributed services
• Experience building a system with a distributed consensus mechanism
• Deep understanding of the Ethereum Virtual Machine

Benefits

Our benefits include competitive compensation, token packages for all employees, regular team off-sites around the world and unlimited PTO. In addition, you’ll join a team of high-caliber people innovating at the frontier of crypto that work collaboratively to help one another accelerate their personal growth.

Values

We are a mission driven company. We believe deeply that through software engineering we can build a self-sovereign society. In our day to day, we make decisions based upon our company values and operating principles:

Company values

• Customer centricity
• Long-term orientation
• Courage

Operating principles

• High-trust & autonomy
• Kindness & respect
• Collaboration
• Humility & low-ego
• Transparency
• Data driven
• Precise communication
• Results oriented
• “Kerplunk”: having clean handoffs and taking ownership

The future belongs to all of us, independent of our origins. Omni is an equal opportunity employer and does not discriminate on the basis of race, religion, color, sexual orientation, gender or any other status protected under federal, state or local law.

Apply Now:

About The Role:

The Software Engineering team at Shardeum is responsible for delivering the Shardeum Mainnet, and developing the smart contract platform, the consensus layer and the protocol layer. We focus on building scalable, performant, secure and reliable software that can be downloaded by thousands of node operators to actualize the Shardeum network.

We are in search of highly talented, innovative individuals to join our team. If you enjoy solving complex computer science problems, are passionate about what you work on, are a perfectionist who wants to build things the right way, and are persistent about finishing what you started, then you're the kind of person we are looking for. You will be working with equally talented and innovative individuals with the goal of building incredible software with the potential to change the world.

What You'll Be Doing:

• Collaborating with a fully distributed team around the world
• Contributing to the architecture and implementation of complex software components in Node.js
• End-to-end ownership of critical software components
• Designing and developing innovative new consensus and protocol software
• Ensuring performance optimization, and making scalability / reliability improvements to the software
• Testing, reviewing and suggesting improvements to the software
• Resolving issues, debugging errors and fixing code to improve the reliability and security of the software
• The tech stack you will be using is: Node.js, TypeScript, SQLite, Postgres, React and Vue.js
• The development environment will be: Linux, Git, AWS, Docker and VSCode

What We're Looking For:

• 7+ Years of Software Engineering Experience
• Fluency with algorithms and data structures
• Ability to quickly learn new languages and technologies
• Ability to write clean yet efficient code
• The Creativity to come up with proof of concept from high level design, while not knowing all the details
• Self motivated to set priorities and methodically make progress towards the goals
• The ability to communicate effectively and convey your ideas when discussing technical topics with team members
• Bachelor's Degree in Computer Science or a related field is desired

We'd Love If You Have:

• Experience with concurrency, parallelism and distributed systems
• Familiarity with the Shardeumopen source repos
• Experience with consensus protocols and other blockchains
• Experience with Node.js and TypeScript, or languages like C, C++, Rust or Go
• Experience writing a smart contract on a blockchain
• Experience running a node in a blockchain network
• Knowledge of cryptography
• Experience with networks and operating systems
• Contributed to open source projects
• Read the Bitcoin and Ethereum whitepapers

Apply Now:

Gelato is an all-in-one Ethereum Rollup as a Service Platform built without limits. Designed to be super-fast, incredibly secure, and infinitely scalable, Gelato rollups allow anyone to build and deploy their fully serviced Layer 2 chains on Arbitrum, Optimism, Polygon, Celestia and more at a pace natively integrated with Web3’s favorite tools and services like Etherscan, The Graph, Pyth, Layer Zero and many more launching a production-ready web3 development environment from the Genesis block.

What we offer:

• Join one of the most technically robust teams in the crypto space, operating in a fully remote environment with our headquarters located in the crypto hub of Zug, Switzerland.
• Play a pivotal role in shaping the future of blockchain, by contributing to the development of Gelato’s Rollup-As-A-Service Platform, already trusted by leading projects like Lisk and Astar Network.
• Dive deep into cutting-edge Web3 technologies with exposure to Gelato’s premier Middleware Services stack, including Gelato Web3 Functions and Gelato Relay, foundational to top-tier applications such as MakerDAO, Connext, Abracadabra, and Pancakeswap.
• Earn and have a say with the GEL Token package, granting you a stake in the network’s future and a voice in the strategic direction of the project.
• Be backed by the best, with support from world-class investors including Dragonfly, IOSG, Galaxy Digital, ParaFi, Gnosis, and renowned figures like Stani Kulechov among others, securing your position at the forefront of the Web3 revolution.

Responsibilities:

• Master diverse Ethereum Rollup technologies including Arbitrum, Optimism, Polygon, zkSync, and more, preparing for deployment, operation, debugging, and enhancement activities.
• Architect a high-impact decentralized network, focusing on scalability to manage a sequencer and RPC node infrastructure that processes millions of transactions and handles billions of RPC requests daily.
• Deepen your expertise in Zero Knowledge proofs, embracing the challenge of working with ZK-EVM stacks and pushing the boundaries of privacy and scalability in blockchain.
• Embrace full ownership of your code with a proactive approach to DevOps, ensuring robust deployment and real-time monitoring in collaboration with our Infrastructure team.
• Innovate within Rollup ecosystems, designing and implementing groundbreaking features like Decentralized Sequencing, Eigenlayer restaking, peer-to-peer messaging, threshold signatures, and trust-minimized off-chain computation.
• Enhance network security and resilience, creatively identifying potential attack vectors and failure points, establishing reproducible testing environments, and crafting strategic fixes.
• Develop and refine recovery protocols for our core node software, ensuring system robustness and rapid response to unforeseen events.
• Build and maintain distributed systems designed for exceptional reliability across diverse blockchain environments, setting new standards for uptime and performance.

Requirements

• You can work with high autonomy from research, spec, implementation, deployment, monitoring and patching your code
• Strong written and verbal English communication skills
• You are comfortable with both DevOps and Software Engineering
• You have extensive experience in shipping production-grade code that handles thousands of user interactions or transactions
• Extensive knowledge about the inner workings of the Ethereum client architecture
• Have a deep understanding of the EVM and how external tooling integrates with it
• 5 years experience with Golang/Rust/C++
• 2 years experience with DevOps - Terraform, Ansible, GCP/AWS, Docker, Kubernetes
• 1 year experience with Solidity
• Strong experience with high throughput database systems
• Strong experience with maintaining scalable microservices systems
• Strong experience with distributed systems and/or container orchestration
• Strong interest in Web3/crypto industry
• Experience using crypto applications (e.g. Uniswap, Aave, etc.)

Not essential, but big bonus points:

• Knowledge of the inner workings of the EVM execution client geth
• Knowledge about the inner workings of the various Ethereum rollup clients including but not limited to op-geth, understand the underlying components, and have opinions about the various trade-offs of those components and platforms
• Experience with p2p network technologies such as libp2p

Technologies we use and teach:

• GETH and its various Rollup forks
• Golang/Rust
• Node.js/TypeScript
• libp2p
• RabbitMQ
• Redis
• GCP (less AWS)
• Ethers.js
• Subgraphs

Benefits

• Work very autonomously
• Generous GEL token package
• Competitive Salary
• Work together with one of the best technical teams on Ethereum
• Build relationships with top teams which are already Gelato users, including MakerDAO, Optimism, Pancakeswap and many more
• Chance to travel the world to go to exciting events and connect with key players in this industry
• Join amazing in-person offsites all over the world

What you will be doing:

• Drive quality initiatives to improve Circle’s system availability and reliability
• Help with peer review on code changes and test cases
• Isolate issues and report to the issue tracking system
• Verify bug fixes and prevent regression bugs by creating quality tools and detecting early
• Test web applications and underlying services, API services, and mobile apps (iOS and Android)
• Participate in designing and building testing processes and test frameworks
• Plan, develop/maintain automated UI and/or API tests
• Develop test tools and programs to fulfill internal needs
• Give internal knowledge sharing on technical topics
• Mentor new hires and junior engineers

What you should have (not all required):

Staff Software Engineer, Quality (IV)

• 7+ years of experience in software testing
• Bachelor’s (or higher) degree in computer engineering, computer science, or a related field
• Proficiency in writing clean and maintainable code in TypeScript or JavaScript
• Expertise in API/UI automation testing
• Strong understanding of and ability to utilize automation frameworks
• Familiarity with Linux/macOS operations
• Knowledge of network protocols like HTTP and RESTful APIs
• Experience with CI/CD practices, particularly using GitHub Actions
• Familiarity with Docker, Kubernetes (k8s), and AWS
• Skills in effectively locating or adopting existing tools, or developing new tools as needed
• Dedication to designing and executing various types of testing (e.g., functional, stress, performance, load)
• Ability to design and build automation frameworks from scratch
• Experience contributing to in-house testing infrastructure and frameworks
• Ability to integrate automation frameworks with CI/CD pipelines
• Ability to clearly and concisely describe issues
• Agility and flexibility in fast context-switching
• Capability to guide and mentor more junior team members
• Proficiency in English communication in a professional setting
• Ability to lead internal team projects and develop practical plans to achieve predefined objectives
• Passion for pursuing extensive blockchain/testing knowledge and skill excellence
• Skilled in leading medium to large projects with high complexity that may involve multiple engineers, potentially from other teams
• Delivers high-quality software on time, rarely missing their commitments
• Provides feedback on software decisions made by other teams
• Experience in designing scalable, reliable and low barrier-to-entry testing or quality infrastructure

Apply Now:

What you will be doing:

• Drive quality initiatives to improve Circle’s system availability and reliability
• Help with peer review on code changes and test cases
• Isolate issues and report to the issue tracking system
• Verify bug fixes and prevent regression bugs by creating quality tools and detecting early
• Test web applications and underlying services, API services, and mobile apps (iOS and Android)
• Participate in designing and building testing processes and test frameworks
• Plan, develop/maintain automated UI and/or API tests
• Develop test tools and programs to fulfill internal needs
• Give internal knowledge sharing on technical topics
• Mentor new hires and junior engineers

What you should have (not all required):

Senior Software Engineer, Quality (III)

All the requirements of a Software Engineer in Test (II) and:

• 4+ years of experience in software testing
• Contribute to in-house testing infrastructure and framework
• Ability to guide more junior members of the team
• Expertise in API/UI automation testing
• Excellencies in designing and building automation frameworks from scratch
• Ability to integrate automation frameworks with CI/CD (GitHub Actions or similar)
• Skills in efficiently locating/adopting existing tools or developing new ones upon needs
• Familiarity with Docker
• Experience with k8s and AWS
• Experience in leading a small team (Optional)
• Ability to lead internal projects of the team and make practical plans to achieve predefined objectives

Apply Now:

Applicant Privacy Notice Looking to join a world-class blockchain development team? Ava Labs makes it simple to deploy high-performance solutions for Web3, led by innovations on Avalanche. The company was founded by Cornell computer scientists, who partnered with Wall Street veterans and early Web3 leaders to execute a promising vision for redefining the way people build permissionless networks. Ava Labs is redefining the way people create value with Web3. Join us as we empower people to easily and freely digitize all the world’s assets on one open, programmable blockchain platform. We are looking for a Senior Software Engineer to join the AvaCloud team. The AvaCloud team is responsible for simplifying the experience to launch, manage, and grow Web3 applications on an Avalanche Subnet. We are looking for a Senior Software Engineer with expertise in cloud systems. This particular role will be an integral part in launching and maintaining Web3 applications by providing products and services for multi-tenant cloud based services. WHAT YOU WILL DO

Develop and deliver distributed, scalable and highly performant backend systems to support a new application targeted at web2 developers Collaborate closely with the infrastructure team to build and deploy cloud applications Work with frontend developers to build an entirely new web application from the ground up Collaborate with teams and implement best practices for building and maintaining large scale distributed systems Partner with product teams for new feature development and integration including on various blockchain applications such as the Avalanche Explorer, Core Wallets and more Build distributed, scalable, and highly performant APIs to support AvaCloud

WHAT YOU WILL BRING

Bachelor's degree in Computer Science or relevant degree 5+ years of general backend development experience 3+ years of experience building large scale enterprise systems Experience with Golang Experience with Typescript/Node.js a plus Experience with AWS Cloud Stack (DynamoDB, KMS, SQS, Lambda, etc) Experience building large-scale enterprise APIs Experience delivering and scaling B2B software solutions Passion for blockchain technology/Web3 and eagerness to consume the latest news and developments

Salary Range: $142,400 to $178,000 (**This is not a guarantee of compensation or salary, a final offer amount may vary based on factors including but not limited to experience and geographic location.)

LI-Remote #LI-MM1

WHY AVA LABS? If you've ever thought about joining an early stage Web3 company - this is it! We're a global, world-class team of experts in computer science, economics, finance, marketing, and law with offices in New York City and Miami. We're highly passionate about Web3 and redefining the way people build and use finance and decentralized applications of all kinds. The company received early-stage funding from Andreessen Horowitz, Initialized Capital, and Polychain Capital, with angel investments from Balaji Srinivasan and Naval Ravikant. Join us and be a pioneer in a new technology that will have implications across a range of verticals such as finance, gaming, investing, collectibles, among many others. Ava Labs is committed to diversity in the workplace and we’re proud to be an Equal Opportunity Employer. We do not hire on basis of race, color, religion, creed, gender, national origin, citizenship, age, disability, veteran status, marital status, pregnancy, parental status, sex, gender expression or identity, sexual orientation, or any other basis protected by local, state or federal law. All employment is decided on the basis of qualifications, merit, and business need.

Apply Now:

About CoW Protocol

CoW DAO is on a mission to protect Ethereum users from the dangers of DeFi. It does this by supporting the development of CoW Protocol, CoW Swap, MEV Blocker, and CoW AMM, and by funding values-aligned projects through the CoW Grants Program.

CoW Protocol is the second-largest DEX aggregator by monthly volume and the first-largest intents-based exchange. MEV Blocker is currently involved in ~4% of all Ethereum transactions, making it the category leader. CoW AMM is the only live AMM that protects LPs from LVR (loss-versus rebalancing).

As a member of CoW DAO’s core team, you will have the opportunity to shape these essential products, and contribute to the Ethereum ecosystem more broadly.

About the role

• Location: We are a fully remote team, and although we hire globally, there is a preference for this role to be based in Europe or remote +/- 5 hours CEST time
• Position: Full-time contractor

At CoW Protocol, we have many opportunities to work with data each and every day.

We are looking for a Data Engineer to support us in extracting relevant data from the Ethereum blockchain. In this role, your primary responsibilities will be creating and maintaining data pipelines, building out our data infrastructure, and supporting other teams in their data needs The ideal candidate is passionate about working with the data and creating impact from the ground up in a fast-paced environment

What you’ll do

• Partner with different stakeholders within the company to understand and address their data needs
• Create, maintain, and optimize data pipelines and queries and facilitate easy consumption of data results. This includes designing and implementing scalable data storage and processing solutions, setting up monitoring and alerting systems to detect issues early, and ensuring data quality and integrity
• Build the infrastructure required for performant extraction, transformation, and loading of data from a wide variety of data sources
• End-to-end ownership of all engineering aspects of the solution. Deploy inclusive data quality checks, tests, and code review processes to ensure the high quality and correctness of data
• Ensure that the company’s data handling processes are secure and compliant with relevant regulations. This includes implementing appropriate access controls, encryption, and other security measures to protect sensitive data
• Connect with the Ethereum community, follow trends, and stay up to date about new analytical tools that help extract relevant data from the blockchain

Who you are

• Strong technical background with a degree in Computer Science, Mathematics and/or Engineering
• Experience in designing, implementing, deploying, and maintaining efficient data architectures
• Proficiency in Python and/or other modern programming language development experience
• Proficiency in querying databases and data modeling, in particular SQL and relational databases experience
• Experience in working with blockchain data from 3rd party providers (including blockchain APIs): Dune Analytics, Etherescan, Coingeko, etc
• Knowledge of cloud computing platforms like Amazon Web Services (AWS), Google Cloud Platform (GCP)
• You are obsessed with numbers and a strong believer in data-driven decision-making, able to analyze and interpret complex data sets and draw meaningful insights from them
• Self-motivated and proactive team player, approach problems creatively and find effective solutions, able to multi-task and also work independently
• Passionate for engineering best practices such as code reviews, testing, continuous integration, and delivery
• Passionate about crypto and blockchain technology, a strong believer in its potential to transform industry

What we can offer you

• Flexible work environment: Join our hub in Lisbon or work remotely
• Token plan: Have a stake in our mission and shape the future of CoW DAO
• Periodic gatherings: Enjoy opportunities to connect with the rest of the team through regular trips
• Conference allocation: Stay up-to-date with ecosystem advancements using our conference budget
• Learning budget: Use our learning budget to support your higher ambitions
• Hardware budget: Take advantage of a hardware budget to acquire the necessary equipment
• Make an impact: You are joining a startup where you can make a huge difference. Your work matters! -Flat hierarchies mean fewer processes and bureaucracy - see more of your ideas come to life!
• Flexible work and vacation times: Prioritize work-life balance through our robust, flexible work policy and vacation allowance
• Growth: If you’re someone who loves taking the initiative and getting things done, CoW offers lots of opportunities for your individual growth

Culture

Life within the CoW Protocol is an incredible adventure! We take pride in our collaborative approach, embracing autonomy and fostering a culture of big thinking and continuous growth. We value impact, ownership, simplicity, and team spirit. Plus, we’re all about feedback, coming together, and enjoying the journey along the way!

At CoW Protocol, we strive to create a space where everyone feels included and empowered. We believe that our products and services benefit from our diverse backgrounds and experiences. All qualified applicants are considered for positions regardless of race, ethnic origin, age, religion or belief, marital status, gender identification, sexual orientation, or physical ability

About CoW Protocol

CoW DAO is on a mission to protect Ethereum users from the dangers of DeFi. It does this by supporting the development of CoW Protocol, CoW Swap, MEV Blocker, and CoW AMM, and by funding values-aligned projects through the CoW Grants Program.

CoW Protocol is the second-largest DEX aggregator by monthly volume and the first-largest intents-based exchange. MEV Blocker is currently involved in ~4% of all Ethereum transactions, making it the category leader. CoW AMM is the only live AMM that protects LPs from LVR (loss-versus rebalancing).

As a member of CoW DAO’s core team, you will have the opportunity to shape these essential products, and contribute to the Ethereum ecosystem more broadly.

About the role

• Location: We are a fully remote team, and although we hire globally, there is a preference for this role to be based in Europe or remote +/- 4 hours CEST time
• Position: Full-time contractor

We are looking for an enthusiastic, self-motivated, senior backend engineer to help us build the next generation of decentralised trading protocols. As a dedicated backend engineer, you will gain ownership of our existing backend services and influence the creation, design, and execution of future features and products. You will work on technically challenging aspects of our off-chain services and our developer-facing APIs and help ensure the delivery of reliable and performant features to improve CoW Protocol.

What you will do

• Architect and design our off-chain services (core auction protocol as well as the orderbook) to support feature growth and the rapidly changing requirements that come from being an application on a constantly evolving blockchain.
• While your focus will be writing concurrent backend systems in Rust, you will also interact with our Smart Contracts written in Solidity and develop your understanding of auction mechanisms and DeFi protocols
• Work closely with researchers and the product team to ship features and come up with new solutions for challenging technical problems
• Deliver high-quality code for features from concept until production (including state-of-the-art monitoring of our production systems)
• Help our engineering team maintain and improve the reliability of the existing features and join in the on-call rotation
• Give thoughtful and in-depth code reviews of your colleagues’ contributions to our open-source codebase

Our Tech Stack

• Backend Code: Rust, Tokio, Cargo, Git https://github.com/cowprotocol/services
• Infrastructure: Pulumi, AWS, Docker, Kubernetes, Grafana, Prometheus, Elasticsearch
• Other codebases: Typescript, Python, Solidity

Who you are

• You have at least 1 year + of productional experience with Rust (experience with C++ is a great bonus)
• You have excellent computer science, programming, and algorithmic skills
• Experience in web3 (ideally DeFi and Ethereum blockchain)
• Experience with operating, maintaining, and architecting complex software systems
• You care deeply about the quality, readability, observability, and testability of your code
• You proactively give technical direction to improve performance, prevent issues, optimise data usage, and refactor the codebase
• You are a team player, strong communicator, and gladly share your expertise with others
• You collaborate effectively with a remote-first team on a large, open-source codebase
• Ideally, someone senior who can mentor colleagues and provide direction.
• You are excited to explore and gain experience with Ethereum

What we can offer you

• Flexible work environment: Join our hub in Lisbon or work remotely
• Token plan: Have a stake in our mission and shape the future of CoW DAO
• Periodic gatherings: Enjoy opportunities to connect with the rest of the team through regular trips
• Conference allocation: Stay up-to-date with ecosystem advancements using our conference budget
• Learning budget: Use our learning budget to support your higher ambitions
• Hardware budget: Take advantage of a hardware budget for acquiring necessary equipment
• Make an impact: You are joining a startup where you can make a huge difference. Your work matters! -Flat hierarchies mean fewer processes and bureaucracy - see more of your ideas come to life!
• Flexible work and vacation times: Prioritize work-life balance through our robust flexible work policy and vacation allowance
• Growth: If you’re someone who loves taking the initiative and getting things done, CoW offers lots of opportunities for your individual growth

Culture

Life within the CoW Protocol is an incredible adventure! We take pride in our collaborative approach, embracing autonomy and fostering a culture of big thinking and continuous growth. We value impact, ownership, simplicity, and team spirit. Plus, we’re all about feedback, coming together, and enjoying the journey along the way!

At CoW Protocol, we strive to create a space where everyone feels included and empowered. We believe that our products and services benefit from our diverse backgrounds and experiences. All qualified applicants are considered for positions regardless of race, ethnic origin, age, religion or belief, marital status, gender identification, sexual orientation, or physical ability.

About Us:

Almond is a B2B fintech company transforming cross-border payments by empowering financial institutions and their customers with the best possible FX rates and near-instant settlements across all corridors globally. With Almond technology, institutions can guarantee fast, affordable, and transparent cross-border transactions. Finally.

With financial institution partnerships across the world, our remote team is growing globally and we’re seeking to add more smart and talented people. This is an amazing opportunity to get in on the ground floor with a team focused on both social impact and a significant market opportunity.

Role Summary:

We’re seeking a Tech Lead dedicated to enhancing the Almond Development Team experience. As a Tech Lead in our Engineering team, you will focus on crafting high-quality and resilient solutions while upholding coding standards, code quality, and best engineering practices. Experience working with cryptocurrency is essential as our projects involve crypto technology.

This role will help develop robust and scalable solutions that integrate with various crypto platforms in order to gather real-time data and analyze market trends. Additionally, you will collaborate closely with other team members to ensure the reliability and accuracy of financial forecasts and projections. This role will cater to a growing international customer base, adeptly conveying technical trade-offs, complexities, and design options while working as part of a remote team spanning the globe.

Responsibilities:

• Develop and review code using Java, Spring, MySQL, PostgreSQL, SQS, and AWS
• Architect, design, and develop projects from end to end
• Guide teams in decision-making regarding architecture, patterns, tools, frameworks, and languages
• Stay current with emerging technologies through active learning and experimentation with new open-source libraries
• Develop a strong understanding of key agile engineering practices to guide teams and contribute to the growth and improvement of our engineering practices, building on our automated testing, continuous integration, and continuous delivery practices
• Collaborate with other engineers to prioritize and ship features
• Partner with Product Managers to scope and estimate new work
• Troubleshoot production environment issues
• Work with systems deployed on AWS cloud

Requirements:

• 6+ years of experience in software development using Java, Spring, and related technologies
• Degree: Bachelor’s degree in Computer Science, Engineering, or a related field
• Proven experience as a Technology Lead or a similar role
• Proficient in MySQL, PostgreSQL, and other database technologies, including NoSQL databases such as DynamoDB or MongoDB
• Experience with AWS services and cloud deployment
• Prior experience working with cryptocurrency and related technologies
• Knowledge of blockchain concepts and protocols
• Experience integrating cryptocurrency payment gateways or wallets
• Understanding of cryptographic principles and security measures in software development
• Familiarity with CI/CD processes and tools
• Strong communication and collaboration skills
• Comfortable working in a remote, globally distributed team

Nice to Haves:

• Knowledge of Frontend Technologies: While primarily backend-focused, having a solid understanding of frontend technologies like React, Angular, or Vue.js can be beneficial.
• Previous Startup Experience: Familiarity with the fast-paced, dynamic environment of startups, where adaptability and quick decision-making are essential.
• Cybersecurity Awareness: Understanding of security best practices, especially in protecting sensitive data and ensuring the security of applications.
• Experience with Legacy System Modernization: Ability to upgrade or integrate legacy systems with modern technologies without disrupting existing services.
• Strong Problem-Solving Skills: Demonstrated ability to tackle complex technical challenges and find efficient, innovative solutions.
• Familiarity with Data Engineering: Understanding of ETL processes, data pipelines, and big data technologies like Hadoop, Spark, or Kafka.

Salary Range:

• Starting at USD$90k/year. (Rate will depend on country/region)

Benefits:

• Unlimited PTO
• Stock Options
• Remote Work Environment
• Company off-sites

Equal Opportunity Employer:

Almond is an equal opportunity employer. We are committed to providing equal employment opportunities to all qualified individuals without regard to race, color, religion, sex, gender identity, sexual orientation, pregnancy, age, national origin, disability, veteran status, or any other legally protected characteristic. We celebrate diversity and strive to create an inclusive environment for all employees.

Apply now to be part of our dynamic and forward-thinking organization to: email.

Description

Arrakis aims to disrupt the current market-making industry by providing the infrastructure to enable every project in the world that wants to launch a token to benefit from non-custodial, trust-less, and automated on-chain market-making strategies. We believe in a world where every organisation, from a small startup to a large enterprise, will be tokenized and traded on-chain. For this world, Arrakis is building the tools to create the necessary liquidity to enable this token economy to rival and out-compete the traditional financial industry.

As one of our Backend Developers within market making, you will be further contributing to the cutting edge development of Arrakis, working with a very experienced and high performing team to create the future of DeFi.

What you will achieve:

• Creation of new on-chain trading strategies
• Monitoring, tuning and improving market making performance across chains.
• Develop backend infrastructure for our market making operations
• Develop, refine and implement strategies and infrastructure for algorithmic liquidity provisioning for the major tokens of the industry

Requirements

• Strong experience building and developing high frequency, ultra-low-latency applications
• 3+ years of experience with C++ / Rust
• Good understanding of the financial market, order books, market making, arbitrage and/or markets microstructure
• A bachelor’s degree in computer science, maths, physics, or similar field
• Experience working with SQL databases
• Experience with Google Cloud / AWS
• Experience working with containers such as Docker / Kubernetes
• Awareness of security principles for critical finance applications, both on and off-chain.

Nice to have:

• Previous automated market making experience and experience with Uniswap
• Experience building your own trading bot
• CEX / DEX arbitrage experience
• Experience dealing with low level networking advantageous (TCP/IP, UDP, networking in the cloud, packet decoding, latency)
• Passionate about contributing / researching cutting edge DeFi technologies.
• Ability to know/understand smart contract code

Benefits

Join an amazing team of industry veterans focused on revolutionising web3 market making, collaborating with major projects like MakerDAO, Uniswap, Aave, Lido, operating fully remotely with members spanning Zug, Paris, New York, Berlin, London supported by world-class investors including Uniswap Labs, Robot Ventures, Accel, Longhash, and more.

What we offer:

• Competitive salary + performance-based compensation
• SPICE token package
• Work remotely or with the Founders in person, in Switzerland
• Chance to travel the world to go to exciting events, connecting with key industry players
• Join amazing in-person offsites all over the world

🚀 Whatnot

Whatnot is a livestream shopping platform and marketplace backed by Andreessen Horowitz, Y Combinator, and CapitalG. We’re building the future of ecommerce, bringing together community, shopping and entertainment. We are committed to our values, and as a remote-first team, we operate out of hubs within the US, Canada, UK, Ireland, and Germany today.

We’re innovating in the fast-paced world of live auctions in categories including sports, fashion, video games, and streetwear. The platform couples rigorous seller vetting with a focus on community to create a welcoming space for buyers and sellers to share their passions with others.

And, we’re growing. Whatnot has been the fastest growing marketplace in the US over the past two years and we’re hiring forward-thinking problem solvers across all functional areas.

💻 Role

We are looking for intellectually curious, highly motivated individuals to become foundational members of our Core Machine Learning team. You will help drive the development of Whatnot’s machine learning operations and work with machine learning engineers across the company to build scalable design patterns that can be repeatedly used to achieve key business goals. Our ideal candidate has experience in spinning up ML platforms e.g. real-time model serving, approximate nearest neighbor retrieval, high-concurrency and low-latency scaling, feature stores, and model lifecycle monitoring. They are also willing and able to flex into an applied research role to develop models that leverage their own components.

What you'll do:

• Drive the development of the machine learning platform roadmap, staying abreast of emerging business needs that the machine learning platform can help address.
• Enhance our machine learning infrastructure--increase reliability, reduce latency, and continually improve the developer experience.
• Develop scalable machine learning design patterns that make it easy for machine learning scientists and engineers to safely deploy models to production.
• Improve model training, management, and monitoring
• Take a leading role in deploying ML models on business critical surfaces & flows.
• Define and advance our technical approach to scalable machine learning.
• Flex outside your comfort zone to help take on new challenges that emerge

👋 You

Curious about who thrives at Whatnot? We’ve found that low ego, a growth mindset, and leaning into action and high impact goes a long way here.

As our next Software Engineer, Machine Learning you should have 5+ years of experience, plus:

• Bachelor’s degree in Computer Science, Statistics, Mathematics, Software Engineering, a related technical field, or equivalent work experience.
• 2+ years of professional experience setting up machine learning platforms–model serving, features stores, model registries, training pipelines, etc.
• 1+ years of professional experience developing software in Python
• Software engineering experience with a track record of applying practical methods to solve real-world problems on consumer scale data.
• Ability to work autonomously and drive initiatives across multiple product areas and communicate findings with leadership and product teams.
• Experience with operational, search, and key-value databases such as PostgreSQL, DynamoDB, Elasticsearch, Redis.
• Firm grasp of visualization tools for monitoring and logging e.g. DataDog, Grafana
• Familiarity with cloud computing platforms and managed services such as AWS Sagemaker, Lambda, Kinesis, S3, EC2, EKS/ECS, Apache Kafka, Flink, Spark.
• Professionalism around collaborating in a remote working environment and well tested, reproducible work.
• Exceptional documentation and communication skills.
• Experience in applied statistical and machine learning fields e.g. Recommendations, Search, Fraud & Anomaly Detection, Experimentation and Causal Analysis preferred.

💰Compensation

For US-based applicants: $205,000 - $275,000/year + benefits + stock options

The salary range may be inclusive of several levels that would be applicable to the position. Final salary will be based on a number of factors including, level, relevant prior experience, skills and expertise. This range is only inclusive of base salary, not benefits (more details below) or equity in the form of stock options.

🎁 Benefits

• Flexible Time off Policy and Company-wide Holidays (including a spring and winter break)
• Health Insurance options including Medical, Dental, Vision
• Work From Home Support
  • $1,000 home office setup allowance
  • $150 monthly allowance for cell phone and internet

• Care benefits
  • $450 monthly allowance on food
  • $500 monthly allowance for wellness
  • $5,000 annual allowance towards Childcare
  • $20,000 lifetime benefit for family planning, such as adoption or fertility expenses
• Retirement; 401k offering for Traditional and Roth accounts in the US (employer match up to 4% of base salary) and Pension plans internationally
• Parental Leave
  • 16 weeks of paid parental leave + one month gradual return to work *company leave allowances run concurrently with country leave requirements which take precedence.

💛 EOE

Whatnot is proud to be an Equal Opportunity Employer. We value diversity, and we do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, parental status, disability status, or any other status protected by local law. We believe that our work is better and our company culture is improved when we encourage, support, and respect the different skills and experiences represented within our workforce.

Apply Now:

🚀 Whatnot

Whatnot is a livestream shopping platform and marketplace backed by Andreessen Horowitz, Y Combinator, and CapitalG. We’re building the future of ecommerce, bringing together community, shopping and entertainment. We are committed to our values, and as a remote-first team, we operate out of hubs within the US, Canada, UK, Ireland, and Germany today.

We’re innovating in the fast-paced world of live auctions in categories including sports, fashion, video games, and streetwear. The platform couples rigorous seller vetting with a focus on community to create a welcoming space for buyers and sellers to share their passions with others.

And, we’re growing. Whatnot has been the fastest growing marketplace in the US over the past two years and we’re hiring forward-thinking problem solvers across all functional areas.

💻 Role

👋 You

• 4+ years of software engineering experience.
• Bachelor’s degree in Computer Science, a related field, or equivalent work experience.
• Knowledge of at least 3 languages (we primarily use Python, Elixir, JavaScript, and are open to others).
• Excellent product instincts. You first think about users rather than the best technical solution.
• You are known for shipping products and features lightning-fast.
• You’re an excellent problem solver and don’t need to be told exactly what to do.
• Comfortable working across the stack (backend and frontend).
• Ability to pick up on new technologies very quickly.
• Proven track record of delivering features.
• Product Management experience.
• AWS/DevOps.
• Startup experience at a high-growth company.

🎁 Benefits

• Flexible Time off Policy and Company-wide Holidays (including a spring and winter break)
• Health Insurance options including Medical, Dental, Vision
• Work From Home Support
  • $1,000 home office setup allowance
  • $150 monthly allowance for cell phone and internet
• Care benefits
  • $450 monthly allowance on food
  • $500 monthly allowance for wellness
  • $5,000 annual allowance towards Childcare
  • $20,000 lifetime benefit for family planning, such as adoption or fertility expenses
• Retirement; 401k offering for Traditional and Roth accounts in the US (employer match up to 4% of base salary) and Pension plans internationally
• Parental Leave
  • 16 weeks of paid parental leave + one month gradual return to work *company leave allowances run concurrently with country leave requirements which take precedence.

💛 EOE

Whatnot is proud to be an Equal Opportunity Employer. We value diversity, and we do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, parental status, disability status, or any other status protected by local law. We believe that our work is better and our company culture is improved when we encourage, support, and respect the different skills and experiences represented within our workforce.

Apply Now:

You are

An experienced backend engineer with a proven track record of shipping products and navigating ambiguity. You have a passion for engineering practices and consistently improve your craft with like-minded teammates.

Responsibilities

• Architect, develop, and execute on our product roadmap
• Discover and evaluate web3 technologies and know when to build using 3rd party APIs or in-house solutions
• Build products on top of our GraphQL API alongside frontend engineers
• Architect backend services that are well-monitored and well-tested
• Improve infrastructure and monitoring consistently

Requirements

• 4+ years writing production software (bonus points for web3 experience)
• BS/BA degree in computer science
• Experience building and maintaining a production system at scale
• Are a self-starter in proposing and carrying out technical solutions to ambiguous business problems
• A passion for continuously improving dev-ops for yourself and fellow engineers
• Have worked with Typescript, Node, AWS

Nice to have

• Have worked closely with product and users
• Meaningful open source contributions or public code for us to appreciate
• Experience with monitoring tools (Posthog, NewRelic, ElasticSearch, etc)

Salary Range

• $140,000 - $210,000 (based on experience)

Apply Now:

• Collaborate with quantitative researchers to understand their workflow, challenges, and requirements, and provide technical solutions to improve their research productivity
• Design, develop, and maintain software tools, platforms, and frameworks that enhance the efficiency and effectiveness of research activities, including data gathering, preprocessing, analysis, and model development
• Identify and implement advanced data processing techniques, algorithms, and statistical methods to optimize research workflows and enhance data analysis capabilities
• Leverage your expertise in software engineering, data engineering, and machine learning to build scalable and robust systems that facilitate large-scale data analysis and experimentation
• Conduct code reviews, provide technical guidance, and mentor junior research engineers to ensure code quality, maintainability, and adherence to best practices
• Collaborate with cross-functional teams, including quantitative researchers, data scientists, and engineering professionals, to integrate research tools and systems into the existing infrastructure
• Assist in the evaluation and implementation of third-party tools, libraries, and data sources that can enhance the research process
• Participate in research discussions, contribute ideas, and provide technical expertise to improve research methodologies and strategies
• Contribute to the development and maintenance of documentation, user guides, and training materials related to research tools and processes

• 4+ years experience working in close partnership with quantitative researchers to develop, deploy and maintain quantitatively-driven alpha strategies.Previous experience at a quantitative hedge fund is strongly preferred.
• Master's or Ph.D. in Computer Science, Engineering, Data Science, or a related field
• Strong Python programming skills, with a focus on building scalable and efficient systems
• Proficiency in data processing, analysis, and visualization tools, libraries, and frameworks
• Solid understanding of statistical modeling, machine learning techniques, and their practical applications in quantitative research
• Experience with AWS
• Excellent problem-solving skills and the ability to design practical solutions to complex research challenges
• Strong communication and collaboration skills to effectively work with cross-functional teams and translate research requirements into technical solutions
• Experience in recruiting, mentoring, and guiding junior team members is preferred

Are you keen to work in a well-resourced startup environment, where your ideas, experience, and drive to find creative solutions makes a difference? We’d like to hear from you.

The salary for this role is anticipated to be between $150,000 and $250,000. This anticipated salary range is based on information as of the time this post was created. This role may also be eligible for additional forms of compensation and benefits, such as a discretionary bonus, health, dental and other benefits plans. Actual compensation will be carefully determined based on a number of candidate factors, including their skills, qualifications and experience.

Apply Now: