Offchain

Senior Backend Engineer building and scaling the distributed infrastructure behind Arbitrum, with a focus on blockchain systems, compiler pipelines, SDKs, and high-performance backend architecture. This fully remote role combines hands-on engineering, technical leadership, security collaboration, and support for the Nitro Testnode product.

Head of Solutions Engineering is a senior player-coach role leading client-facing technical strategy for blockchain applications while remaining hands-on with code, integrations, prototypes, and implementation. The role partners with leading teams in the Arbitrum ecosystem to accelerate adoption and shape product strategy.

Senior Backend Engineer on Offchain’s Developer Platform team, building security-critical Go services for non-custodial wallet creation, authentication, key recovery, and signing. The role combines backend ownership with distributed systems, applied cryptography, trusted execution environments, and production Kubernetes operations.

Offchain is seeking a Security Engineer to strengthen its cloud security posture, secure cloud-native infrastructure, and evolve information security governance across the organization. This remote-first role focuses on AWS, Kubernetes, security automation, compliance, and risk reduction.

Lead offensive security efforts at Offchain by conducting penetration tests, red team exercises, and code audits across AWS cloud environments, infrastructure, and backend applications. Help strengthen detection, response, and security practices for the infrastructure powering the Arbitrum ecosystem.

Senior Backend Engineer joining Offchain’s Nitro Backend team to build and optimize the core distributed infrastructure powering Arbitrum, a leading Ethereum scaling solution. The role focuses on performance, security, scalability, and complex blockchain systems challenges.