Note: The job is a remote job and is open to candidates in USA. Offchain is a pioneering company in blockchain scalability and security, transforming interactions with decentralized applications. They are seeking a Senior Backend Engineer to join the Nitro team, focusing on building and optimizing the core technology that powers Arbitrum, the leading Ethereum scaling solution.
Responsibilities
- Building and improving Nitro, the core node software that powers Arbitrum
- Designing and optimising systems responsible for transaction execution, state management, and network performance
- Scaling throughput and improving the performance and efficiency of Arbitrum's core infrastructure
- Solving distributed systems challenges across a large-scale blockchain network
- Enhancing reliability, observability, and security across critical infrastructure
- Developing new capabilities for the Arbitrum stack
Skills
- Experienced Rust engineer with a track record of building production systems
- Comfortable working across distributed systems, infrastructure, and performance-critical applications
- Motivated by solving complex technical problems at scale
- Able to take ownership of projects from technical design through implementation and operation
- Pragmatic, collaborative, and capable of making sound engineering trade-offs
- Interested in runtimes, execution environments, WASM, developer tooling, and/or systems programming
- Maintained a security focused mindset, always keeping an eye out for potential threats and vulnerabilities in your code
- Experience with WASM
- Familiarity with blockchain infrastructure or smart contract platforms
- Open source contributions within the Rust ecosystem
Benefits
- Remote-first global workforce + NY office
- Annual company offsite + team onsites
- Professional reimbursement program (facilitates industry conference attendance, certifications, and more)
- Medical, dental & vision coverage (US + some other countries)
- 401k retirement plan + company match (US only)
- Wellness stipend
- Home office set up / ergonomic equipment program
Company Overview
Offchain is the strategic infrastructure partner for the world’s most ambitious companies. It was founded in 2018, and is headquartered in New York, New York, USA, with a workforce of 51-200 employees. Its website is https://offchainlabs.com/.Company H1B Sponsorship
Offchain has a track record of offering H1B sponsorships, with 1 in 2025, 2 in 2024, 2 in 2023. Please note that this does not guarantee sponsorship for this specific role.