Gnosis Summer Internship (Ethereum Ecosystem) 2025

Location: Remote (EU or India time zone +/- 3 hours)
Internship Timeline:

• Application submission: June 12 - 29

• Internship period: August 4 until October 31 (three months)

About the team

Gnosis 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. Gnosis continues to contribute to Ethereum’s growth as an experimental chain, where newcomers, quirky ideas, and indie projects are welcome. 

Gnosis is currently hiring for an intern who will support the Core devs team. The Internship period will be starting on August 4 until October 31.

As a member of Ethereum’s Beaconverse, Gnosis 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. 

Some potential tasks/ projects you may be involved with:

• Testing support:Improve testing for Gnosis Chain.

  • Extend GC’s testing framework by implementing EEST/EELS

  • Introduce new Hive tests

  • Do a full inventory of Ethereum / Gnosis Chain testing efforts and improve them where possible

• Snap / Checkpoint Sync trust assumptions: What happens if I sync from a compromised source?

  • Write code to create a synced fork of Gnosis Chain that changes some contract values / balances

  • Write a document on how this could be used with a compromised checkpoint sync server as an attack vector (as RPC providers for example)

• Reth - Client Indexing: Using reth’s ExEx, build an extensible modded reth.

  • ExEx helps you track changes to EVM directly. This removes trust from centralized RPCs and indexers.

  • We want to use it for application-specific indexing requirements

    • For Circles

    • For HOPR

• Reth - Custom Engine API: To stop serving headers which we don’t have (pre-merge).

  • We import state post-merge, because reth for GC isn’t yet compatible for pre-merge

  • We still serve empty headers for pre-merge RPC requests

  • We need to block such RPC calls requesting pre-merge headers/blocks

Table of Content

• Summary
• Benefits
• Requirments
• Application Deadline
• How To Apply

Summary

• Application DeadlineJune 30, 2025
• Study LevelInternship
• SponsorGnosis
• City to studyBerlin
• Eligible CountryAll Countries

Benefits

• 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.
• Flexible and Remote Work: Not a morning person? No problem! We embrace flexible working schedules and have a long-standing culture of remote work. Balance your professional and personal life in a way that works for you.
• Growth and Opportunity: Grow with us in an exciting industry. As Gnosis rapidly expands, so do the opportunities for you to make a significant impact. We value initiative and a proactive approach.
• Inclusive and Diverse Culture: At Gnosis, we are committed to creating an inclusive environment that celebrates diversity. We believe our products and services are enhanced by a wide range of perspectives. All qualified applicants will receive consideration for employment without regard to race, ethnic origin, age, religion, belief, marital status, gender identification, sexual orientation, or physical ability.
• 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.

Requirements

• General knowledge of the ethereum protocol

• General knowledge of EVM bridges

• Intermediate Rust as a minimum

• 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

• [Plus] Experience with Consensus Layer clients: Lighthouse, Nimbus, Teku, Lodestar, Prysm

Application Deadline

June 30, 2025

How To Apply

Are you qualified and interested in this opportunity? Kindly go to Gnosis on gnosis.jobs.personio.com 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.

For more information, kindly visit Gnosis internship webpage.