Hashgraph is looking to hire a Product Security Engineer to join their team. This is a full-time position that can be done remotely anywhere in APAC or EU.

Hashgraph - Powering a digital future built on trust.

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.

As a Smart Contract Engineer at ZetaChain, you will play an integral role in designing and implementing the protocol contracts that drive our cross-chain connectivity platform. Your work will be centered on building and optimizing smart contract architectures that seamlessly integrate with the ZetaChain EVM and other connected chains.

Your primary focus will be the development of secure, scalable smart contracts, ensuring their smooth integration into the core protocol. In this position, you’ll explore and work with a variety of blockchain technologies, engaging deeply with EVM chains as well as non-EVM chains such as Solana and TON. You’ll contribute to the advancement of cross-chain interoperability, playing a key role in realizing our vision of building a universal EVM that seamlessly connects all blockchain ecosystems.

About ZetaChain

ZetaChain aims to be the only blockchain you’ll ever need. It is a layer 1 blockchain and developer platform that connects any L1 and L2, from Ethereum to Bitcoin and beyond. Access all of crypto in one place, as a developer or user.

ZetaChain prides itself on its vibrant and active community, a testament to our growing impact and relevance in the blockchain space:

• Thriving Ecosystem: 1000+ dApps developed between testnet and mainnet
• Engagement: Over a million community members
• Live on Mainnet: Partnered with all major exchanges
• Activity: Network has over 3M unique addresses
• Well Funded: Raised over $27M

Find out more about our ecosystem.

Find out more about our hiring culture: Dream Team Culture.

Why You Want To Work Here

• Cutting-Edge Technology: Dive deep into the latest advancements in blockchain technology with ZetaChain’s innovative protocol.
• Impactful Role: Play a pivotal role in shaping the security and efficiency of a leading blockchain protocol.
• Continuous Learning: Stay updated with the rapidly evolving blockchain landscape, ensuring you’re always at the forefront of the industry.

Responsibilities

• Actively contribute to the development of the ZetaChain protocol, focusing on high-quality code and innovative solutions.
• Engage in the development and optimization of EVM contracts written in Solidity, ensuring they meet high standards of quality and efficiency.
• Dive deep into different blockchain technologies to optimize integrations with various networks like Solana, TON, and more.

Who Would Be a Good Fit for This Role?

• Experienced Blockchain Developer:
  • Individuals with substantial experience in blockchain development, capable of understanding and building complex blockchain architectures.
• Innovative Software Engineering Background:
  • Developers who have a proven track record in software engineering, showing expertise in languages like Go, Rust, or Solidity.
• Contributor to Open Source and Blockchain Communities:
  • Individuals actively involved in the blockchain community, contributing to open-source projects and staying updated with the latest trends and advancements in blockchain technology.

Requirements

• Our tech stack
  • Protocol: Go (Cosmos SDK, go-ethereum, btcsuite)
  • Smart contracts: Solidity, Rust (Solana), FunC (TON)
• Location
  • Remote or San Francisco
• Experience
  • 4+ years of software development experience
  • 2+ years of blockchain development experience
  • Must Have: Hands-on blockchain development experience
• Additional Responsibilities
  • Participate in on-call rotation (Once every 7 weeks)

Does this feel like the perfect fit for you? Reach out to email.

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.