Core Developer

Gnosis is seeking Core Developers to contribute to both Ethereum and Gnosis Chain, a community-run chain aligned with Ethereum's values. The role involves working with Execution and Consensus Layer client teams, implementing EIPs, triaging bugs, maintaining critical infrastructure, and experimenting with rollup technologies. Candidates should possess general knowledge of the Ethereum protocol and EVM bridges, along with experience in Go.

Must Have

• Work with Execution Layer clients teams (e.g. Nethermind, Geth, Erigon, Reth, etc.)
• Work with Consensus Layer client teams (e.g. Lighthouse, Nimbus, Teku, Lodestar, Prysm, etc.)
• Implement EIPs that are in Gnosis’ roadmap
• Work with R&D teams to accelerate the experimentation of EIPs
• Triage bug reports, implement fixes and submit upstream fixes to client teams
• Maintain Gnosis client images and coordinating releases
• Maintain test environments, monitoring and tooling
• Maintain critical infrastructure for the network (e.g. ethstats, forkmon, checkpointz)
• Maintain the Geth fork for Gnosis Chain
• Maintain the Reth plugin for Gnosis Chain
• Maintain testing suites for Gnosis Chain (e.g. Hive, ethereum/tests, EELS)
• Experiment with rollup technologies
• General knowledge of the Ethereum protocol
• General knowledge of EVM bridges
• Experience in Go

Good to Have

• Experience in Rust
• Core development experience
• Experience with Execution Layer clients: Nethermind, Geth, Erigon, Besu, Reth
• Experience with Consensus Layer clients: Lighthouse, Nimbus, Teku, Lodestar, Prysm

Perks & Benefits

• Personal education budgets and conference allowances
• Friday afternoons dedicated to research or side projects
• Flat hierarchy
• Latest hardware and tools
• Opportunities for growth and impact in a rapidly expanding industry
• Join a passionate community driven by a shared goal

What you will do

About Chain

is a community-run chain that is closely aligned with Ethereum’s values and community. We seek to build a chain that is credibly neutral and resilient, with nodes run by thousands of ordinary people across the globe. continues to contribute to Ethereum’s growth as an experimental chain, where newcomers, quirky ideas, and indie projects are welcome.

is currently hiring for Core Devs who will contribute to both Ethereum and . As a member of Ethereum’s Beaconverse, runs the same execution and consensus clients at Ethereum, and contributes to the tooling, bug fixes, and funding of core development. We work directly with client teams like Nethermind and Erigon, and fund critical tooling for Ethereum clients.

• Work with Execution Layer clients teams (e.g. Nethermind, Geth, Erigon, Reth, etc.)
• Work with Consensus Layer client teams (e.g. Lighthouse, Nimbus, Teku, Lodestar, Prysm, etc.)
• Implement EIPs that are in ’ roadmap
• Work with R&D teams to accelerate the experimentation of EIPs (e.g. state expiry, core rollups)
• Triage bug reports, implement fixes and submit upstream fixes to client teams
• Maintain client images and coordinating releases
• Maintain test environments, monitoring and tooling
• Maintain critical infrastructure for the network (e.g. ethstats, forkmon, checkpointz)
• Maintain the Geth fork for Chain
• Maintain the Reth plugin for Chain
• Maintain testing suites for Chain (e.g. Hive, ethereum/tests, EELS)
• Experiment with rollup technologies

Who you are

• General knowledge of the Ethereum protocol
• General knowledge of EVM bridges
• Experience in Go (+ some Rust is a plus)
• Curious and passionate
• Takes initiative to solve problems and make an impact
• Strong communicator who enjoys working with others
• [Plus] Core development experience
• [Plus] Experience with Execution Layer clients: Nethermind, Geth, Erigon, Besu, Reth
• [Plus] Experience with Consensus Layer clients: Lighthouse, Nimbus, Teku, Lodestar, Prysm

What we can offer you

• Personal Development: Pursue your professional goals with our support, including personal education budgets and conference allowances. We invest in your growth and learning.
• Innovation and Experimentation: Interested in exploring new ideas? Dedicate your Friday afternoons to research or work on a side project within our ecosystem. We encourage creativity and experimentation.
• Flat Hierarchy: Navigate with ease in our organization. Our flat hierarchy ensures your ideas and contributions are valued and heard, without getting lost in a complex structure.
• State-of-the-Art Equipment: Receive the latest hardware and all the tools you need. We make sure you're well-equipped to do your best work.
• Growth and Opportunity: Grow with us in an exciting industry. As rapidly expands, so do the opportunities for you to make a significant impact. We value initiative and a proactive approach.
• Community and Mission: Join a team that's passionate about our mission and enjoys working together. We’re not just colleagues; we’re a community driven by a shared goal.

At , we strive to create an inclusive environment that empowers our team members. We believe that our products and services benefit from our diverse backgrounds and experiences and are proud to be an equal opportunity employer: 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.

How to Apply: Submit your resume in English and join us on this exciting journey. We are eager to see what you bring to the table and how you can contribute to our dynamic team.

About

Since launching in 2015, has evolved from a prediction market platform into a comprehensive Web3 infrastructure provider. Our journey includes developing Safe, an industry-standard multisig wallet securing over $100 billion in assets, and CoW Protocol, offering MEV-protected decentralized trading. also created Zodiac, a modular DAO toolset enabling customizable governance systems.

In 2021 launched the Chain through a merger with xDai. This low-cost, reliable L1 supports decentralized applications with high security and uptime.

Today, focuses on scaling blockchain technology beyond infrastructure, delivering consumer-facing applications that rival traditional systems in user experience. The ecosystem aims to revolutionize key areas like payments, decentralized AI, and the open web. United by the GNO token, 's aligned projects work towards a decentralized future where users have greater control and privacy. Chain serves as the secure, EVM-compatible foundation supporting this growing ecosystem of innovative products.

Embrace the future of decentralized technology with , and join us as we build the open internet together!