What are we all about?

We are a team of builders and researchers on a mission to empower enterprises and developers worldwide to access and build on decentralized systems.

Our expertise covers several domains: Ethereum and Starknet protocol engineering, layer-2, AI, cryptography research, protocol research, decentralized finance (DeFi), security auditing, formal verification, real-time monitoring, smart contract development, and dapps and enterprise engineering.

Working to solve some of the most challenging problems in the blockchain space, we frequently collaborate with renowned companies, such as Ethereum Foundation, Starknet Foundation, Gnosis Chain, Flashbots, Forta Protocol, Lido, EigenLayer, Open Zeppelin, RISCZero, Aleph Zero, and many more.

Today, we are a 350+ strong team working remotely across 66+ countries.

Are you the one?

Starknet is the fastest-growing network in terms of new developers joining the network. Nethermind builds many developer-facing tools that need to work seamlessly in this fast-paced blockchain. This ecosystem needs contributors with a quality mindset, capable of applying their craftsmanship and systematic creativity to improve its components. Your software engineering experience and ability to rally developers around you could mean the difference between a flawless network upgrade and a community forking event. Do you have what it takes?

Responsibilities:

• Lead and manage the software development team maintaining ecosystem components and applications in the blockchain space.
• Collaborate with Product Owner and Project Manager to drive a vision of how products add value and evolve in alignment with company strategy and goals.
  • Drive the adoption of best practices in coding, testing, and maintenance to ensure quality and scalability.
• Oversee the design, development, and implementation of new software programs and updates.
• Foster a culture of creativity and innovation within the team.
• Mentor and develop team members, identifying strengths and areas for growth.
• Ensure the optimization of development processes for efficiency and effectiveness.
• Stay abreast of emerging technologies and industry trends to maintain a competitive edge.

Skills:

• Track record of leading complex software projects with large transaction loads and/or large user bases
• An understanding of good software architecture
• Ability to implement efficient algorithms and design complex data structures
• Excellent programming skills, Go or Rust preferred but will also consider other tech stacks (e.g. Java, C++)
• Ability to write clean, testable, and maintainable code without over-engineering
• An entrepreneurial nature, willing to take ownership and run toward problems
• Pragmatic experience in various software development methodologies
• Understanding of DevOps principles, experience working in CI/CD-enabled environments
• Strong computer science background
• A fascination with the inner working of blockchains

Nice to have:

• SDK evolution and maintenance - with focus on providing best in class Developer Experience
• Blockchain / EVM / TransactionPool / JSON RPC
• Complex data structures for example Patricia-Merkle/Verkle tries
• NoSQL Key Values databases for example RocksDB

Keep up to date on what we are working on by following us on our social channels:

• Discord
• LinkedIn
• Twitter

What are we all about? We are a team of builders and researchers on a mission to empower enterprises and developers worldwide to access and build on decentralized systems. Our expertise covers several domains: Ethereum and Starknet protocol engineering, layer-2, AI, cryptography research, protocol research, decentralized finance (DeFi), security auditing, formal verification, real-time monitoring, smart contract development, and dapps and enterprise engineering. Working to solve some of the most challenging problems in the blockchain space, we frequently collaborate with renowned companies, such as Ethereum Foundation, Starknet Foundation, Gnosis Chain, Flashbots, Forta Protocol, Lido, EigenLayer, Open Zeppelin, RISCZero, Aleph Zero, and many more. Today, we are a 350+ strong team working remotely across 66+ countries. View all our open positions here: https://www.nethermind.io/open-roles Are you the one? Starknet is the fastest-growing network in terms of new developers joining the network. Nethermind builds many developer-facing tools that need to work seamlessly in this fast-paced blockchain. This ecosystem needs contributors with a quality mindset, capable of applying their craftsmanship and systematic creativity to improve its components. Your software engineering experience and ability to rally developers around you could mean the difference between a flawless network upgrade and a community forking event. Do you have what it takes? Responsibilities:

Lead and manage the software development team maintaining ecosystem components and applications in the blockchain space. Collaborate with Product Owner and Project Manager to drive a vision of how products add value and evolve in alignment with company strategy and goals.

Drive the adoption of best practices in coding, testing, and maintenance to ensure quality and scalability.

Oversee the design, development, and implementation of new software programs and updates. Foster a culture of creativity and innovation within the team. Mentor and develop team members, identifying strengths and areas for growth. Ensure the optimization of development processes for efficiency and effectiveness. Stay abreast of emerging technologies and industry trends to maintain a competitive edge.

Skills:

Track record of leading complex software projects with large transaction loads and/or large user bases An understanding of good software architecture Ability to implement efficient algorithms and design complex data structures Excellent programming skills, Go or Rust preferred but will also consider other tech stacks (e.g. Java, C++) Ability to write clean, testable, and maintainable code without over-engineering An entrepreneurial nature, willing to take ownership and run toward problems Pragmatic experience in various software development methodologies Understanding of DevOps principles, experience working in CI/CD-enabled environments Strong computer science background A fascination with the inner working of blockchains

Nice to have:

SDK evolution and maintenance - with focus on providing best in class Developer Experience Blockchain / EVM / TransactionPool / JSON RPC Complex data structures for example Patricia-Merkle/Verkle tries NoSQL Key Values databases for example RocksDB Disclaimer: I hereby consent to my personal information being stored and processed by Demerzel Solutions Limited (t/a Nethermind) (the “Company”) for recruitment purposes in relation to both the selected job role and any other role the Company considers me a qualified candidate for. All data storing and processing by the Company takes place in accordance with the UK GDPR. Kindly refer to our privacy policy for more details. Your consent to share personal information is entirely voluntary, and you may withdraw your consent at any time. Should you have any questions about this process, or wish to withdraw your consent please contact: email Keep up to date on what we are working on by following us on our social channels       Click here to view our Privacy Policy.

Apply Now:

What are we all about?

We are a team of builders and researchers on a mission to empower enterprises and developers worldwide to access and build on decentralized systems.

Our expertise covers several domains: Ethereum and Starknet protocol engineering, layer-2, AI, cryptography research, protocol research, decentralized finance (DeFi), security auditing, formal verification, real-time monitoring, smart contract development, and dapps and enterprise engineering.

Working to solve some of the most challenging problems in the blockchain space, we frequently collaborate with renowned companies, such as Ethereum Foundation, Starknet Foundation, Gnosis Chain, Flashbots, Forta Protocol, Lido, EigenLayer, Open Zeppelin, RISCZero, Aleph Zero, and many more.

Today, we are a 350+ strong team working remotely across 66+ countries.

Are you the one?

We are looking for a passionate and skilled engineer to join our highly dynamic team.

You will be developing blockchain-based solutions that span across a wide spectrum of the web3 ecosystem, from protocol level engineering and smart contracts development to dapps and Enterprise/Financial applications that integrate with or are built on blockchain infrastructure.

This is a remote-first role. You will be working with a globally distributed team of talented engineers and researchers, as well as many leading industry partners.

You should be proficient in at least one or more general programming languages (refer to the skills section for details), as well as Smart Contract development, primarily Solidity. A deep understanding of the Ethereum blockchain, strong general engineering skills, and a firm grasp of computer science fundamentals are required. The ideal candidate would be a robust problem-solver with excellent attention to detail and effective communication skills. Familiarity with non-EVM blockchains, zk proofs, the DeFi landscape, and traditional finance would be advantageous.

Responsibilities include, but not limited to:

• Work on full-stack engineering solutions that integrate with or built on top of blockchains.
• Design and build applications on various blockchains
• Develop, test, and deploy secure smart contracts
• Debug and optimize smart contracts
• Extract and process data from the blockchain
• Develop scripts & tools to automate or improve blockchain interactions
• Collaborate with other engineers and teams, both internally and externally
• Stay updated with new developments and technology in the blockchain space

Technical Skills:

• Excellent programming skills in one or more of the following programming languages: C#, Go, TS/JS, Solidity, Rust, Python, Java, Kotlin, but will also consider other tech stacks.
• Proficient in a smart contract programming language (eg. Solidity, Cairo, MOVE) with extensive experience in developing complex smart contracts. Familiar with toolings such as Foundry, Hardhat or Remix.
• Ability to implement efficient algorithms and design complex data structures
• Understanding of good software architecture and engineering process
• Ability to write clean, testable, and maintainable code without over-engineering
• Deep understanding of Ethereum blockchain architecture
• Understanding of the DeFi landscape, such as lending protocols, AMMs, Perps and stablecoins
• Experience in developing off-chain applications that integrate with web3 protocols, using libraries such as Web3.js and ethers.js.
• Strong computer science background

Other Competencies:

• You need to be a self-starter, with the curiosity and drive to continuously improve.
• Excellent problem-solving and analytical skills, with attention to detail
• Strong written and verbal communication and collaboration skills
• Proficiency in English

Nice to have:

• Knowledge in Traditional Finance, and the intersection between traditional finance and blockchain, such as Tokenization.
• Experience with layer-2 solutions like Starknet, Optimism, zkSync, and Arbitrum
• Familiarity with blockchain data analytics tools like Dune and Nansen
• Knowledge of cryptographic primitives like hashing and signature schemes
• Familiarity with zk proof systems (ZK-STARK, ZK-SNARKs)
• Familiarity with formal verification methods for smart contracts
• Experience in front-end development with frameworks like React or Angular
• Familiarity with smart contracts auditing tooling/techniques (e.g Fuzzing, Symbolic execution, Static and Dynamic Analysis)
• Infrastructure / DevOps experience (eg. setup private networks)
• Ethereum core development experience

Perks and Benefits

• Professional Growth: Continuous learning opportunities and the chance to work with industry leaders.
• Fully Remote: Work from anywhere in the world.
• Flexible Working Hours: Manage your own schedule to balance work and life effectively.
• Competitive Compensation: Attractive salary plus equity options.

Keep up to date on what we are working on by following us on our social channels:

• Discord
• LinkedIn
• Twitter

Blockstream was founded in 2014 by Dr. Adam Back and a group of fellow cryptographers and engineers passionate about Bitcoin and its potential to change the future of finance. Focusing on building fundamental Bitcoin infrastructure, Blockstream quickly grew into one of the leading technology power houses of the industry. At Blockstream, we’re building solutions on Bitcoin that will disrupt the existing financial system. We imagine a world where individuals and businesses can easily access a global, permissionless system to secure their money, use it every day, and invest it or put it to work. In pursuit of our expansive vision, we’ve built a full stack of innovative products on top of the Bitcoin protocol, from layer-2 projects like Liquid and Core Lightning, to end-user software and hardware wallets like Green and Jade. Our brand stands for innovation in the Bitcoin community, and we’re growing our team to accelerate the future.  Blockstream has openings for engineers to work in teams, building high-performance software back-end infrastructure, that integrates seamlessly with user-facing features. What You’ll Be Doing (Responsibilities):

Working with different programming languages and varied tech stacks Building and maintaining robust solutions using your high-level expertise and solid understanding of low-level systems to seamlessly integrate our technology with end users as well as existing third-party systems You will design, implement, test, deliver, and support software in a continuous integration and deployment environment

What We Look For In You (Required Qualifications):

5+ years of working experience Extensive knowledge in any, or multiple, of the following:

C/C++, Rust Test-driven development (unit tests, end to end, etc) Designing, implementing, and using APIs (RESTful, Websocket, RPC, etc.) Functional Programming Development and operation of back-end infrastructure and sysadmin tools Design of scalable, distributed back-end architectures Cloud development and deployment (AWS or GCE)

Experience with system/software architecture Excellent communication, team player attitude and collaboration skills Highly self-motivated, lifetime learner

Nice To Haves (Preferred Qualifications):

Experience with Bitcoin, blockchain technology, or cryptography Open-source software development experience Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field (or equivalent experience)

Apply Now:

• Experience Required: Minimum 5 years in software development
• English Level: Upper-Intermediate or higher

About the Project:

Metaplex is a cutting-edge NFT marketplace platform on the Solana blockchain. This role requires an experienced Senior Rust (Go will be +) Developer to drive backend development, contribute to innovation, and ensure the platform’s scalability and performance.

Key Responsibilities:

Team Collaboration:

• Collaborate with the backend development team, ensuring high standards in code quality, product scalability, and timely delivery.
• Foster a collaborative environment and mentor team members in best practices.

Code Development & Review:

• Write efficient, clean Rust code, and conduct thorough code reviews to uphold development standards.

Communication:

• Maintain effective communication with American partners, articulating ideas and technical solutions clearly and persuasively.

Product Architecture:

• Architect scalable, high-performance, and secure systems from the ground up.
• Design and optimize backend architecture for performance, reliability, and resilience in high-traffic environments.
• Apply advanced knowledge in software architecture patterns, microservices, and RESTful API design.

Testing & Quality Assurance:

• Take ownership of the product testing process, implementing testing strategies and maintaining rigorous QA standards.

DevOps & Infrastructure:

• Oversee deployment, infrastructure, and CI/CD pipeline to ensure a smooth development process.
• Strong understanding of networking concepts, including load balancers and routers, with experience handling high-load applications (>1000 RPS) and tuning performance for scalability.

Preferred Qualifications:

Database Expertise:

• Proficiency in database management, schema design, and optimization for large-scale data.
• Experience with RocksDB and some PostgreSQL, rather than traditional big data stacks.
• Knowledge of data synchronization protocols over gRPC.

Knowledge of Go:

Familiarity with Go programming is valued, particularly for cross-functional collaboration and product enhancement.

Blockchain Knowledge:

• Previous experience working with blockchain projects, especially on Solana, is highly preferred.

Advanced Technical Skills:

• Strong grasp of data structures, algorithms, and asynchronous architectures.
• Experience designing solutions for distributed systems in high-growth startups, handling scaling challenges associated with evolving business needs.

Skills and Experience:

• Technical Expertise: At least 5 years in software development, with deep knowledge of Rust (Go will be+).
• Product Ownership: Demonstrated experience in taking ownership of product development, testing, and DevOps integration.
• Analytical and Problem-Solving Skills: Strong decision-making abilities with the capacity to defend technical choices effectively.
• Team Collaboration: Excellent interpersonal skills for working within an international team and collaborating across time zones.
• Passion for Blockchain: A genuine interest in blockchain technology and a drive to remain at the forefront of industry developments.

Gelatois 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
• 3 years experience with DevOps - Terraform, Ansible, GCP/AWS, Docker, Kubernetes
• 2 years experience with Golang/Rust/C++ (you will be using Go)
• You have extensive experience in shipping production-grade code that handles thousands of user interactions or transactions
• Have a deep understanding of the EVM and/or other VMs and and how external tooling integrates with it
• 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 about the inner workings of the Ethereum client architecture
• 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
• 1 year experience with Solidity
• 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

• Fully remote team, with team members in Zug, Paris, New York, London, Singapore, and many other cool places. We highly value having availability overlapping with (CET) working hours to enhance collaboration with the core team
• Competitive package with a generous token package. Get a share of the network token and be able to participate in the Gelato DAO
• Chance to participate in shaping the future of web3 by working together with the biggest projects in this space that use Gelato such as Optimism, Polygon, Arbitrum, Celestia and Eigenlayer
• World-class Investors - We are backed by the community, including industry-leading experts such as Dragonfly, ParaFi, Nascent, IDEO, IOSG and Galaxy Digital.