Senior Backend Engineer
Offchain is a blockchain infrastructure company serving enterprises, developers, and institutional operators. It provides enterprise engineering services and operates products including Arbitrum, Prysm, and ZeroDev to support scalable, secure onchain applications and finance.
Projects
About Offchain
Offchain builds enterprise-grade blockchain infrastructure and provides protocol-level engineering and advisory services for organizations bringing digital-asset and onchain systems into production. Its product suite includes Arbitrum for Ethereum scaling, Prysm consensus-client infrastructure for Ethereum validation, and ZeroDev smart-account infrastructure, while its research and venture arms develop and support additional onchain technologies.
Skills
About the Role
You will work on the core infrastructure powering Arbitrum, tackling complex distributed systems challenges and optimizing system performance. You will contribute to the security and scalability of Arbitrum, collaborate closely with research, product, and blockchain engineering teams, and write production-quality concurrent code (Go, C++, or Rust). You will maintain a security-focused mindset, help improve compilers, SDKs, and WebAssembly code where applicable, and drive rigorous experimentation and ownership of critical backend systems.
Requirements
- Production experience with a concurrency-supporting language (Go C++ or Rust)
- Strong sense of ownership
- Experience collaborating closely with teammates
- Security-focused mindset
- Proven contributions to production products
Responsibilities
- Work on the core infrastructure powering Arbitrum
- Tackle complex distributed systems challenges
- Optimize system performance
- Contribute to security and scalability
- Collaborate closely with research product and blockchain engineering teams
- Write production-quality concurrent code
Benefits
- Remote-first global workforce with New York office
- Annual company offsite and team onsites
- Professional reimbursement program for conferences and certifications
- Medical dental and vision coverage (US and some other countries)
- 401k retirement plan with company match (US only)
- Wellness stipend
- Home office setup and ergonomic equipment program
