[Remote] Senior Backend Engineer, Rust

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.ResponsibilitiesBuilding and improving Nitro, the core node software that powers ArbitrumDesigning and optimising systems responsible for transaction execution, state management, and network performanceScaling throughput and improving the performance and efficiency of Arbitrum's core infrastructureSolving distributed systems challenges across a large-scale blockchain networkEnhancing reliability, observability, and security across critical infrastructureDeveloping new capabilities for the Arbitrum stackSkillsExperienced Rust engineer with a track record of building production systemsComfortable working across distributed systems, infrastructure, and performance-critical applicationsMotivated by solving complex technical problems at scaleAble to take ownership of projects from technical design through implementation and operationPragmatic, collaborative, and capable of making sound engineering trade-offsInterested in runtimes, execution environments, WASM, developer tooling, and/or systems programmingMaintained a security focused mindset, always keeping an eye out for potential threats and vulnerabilities in your codeExperience with WASMFamiliarity with blockchain infrastructure or smart contract platformsOpen source contributions within the Rust ecosystemBenefitsRemote-first global workforce + NY officeAnnual company offsite + team onsitesProfessional 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 stipendHome office set up / ergonomic equipment programCompany OverviewOffchain 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 SponsorshipOffchain 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.