Senior Software Engineer, Developer Platform

Description

Offchain — the company behind the Arbitrum stack, the most widely adopted Ethereum scaling solution in production today with Robinhood, BlackRock, Ethena Labs, Securitize, Aave, and Apechain all building on Arbitrum, and backed by $124 million in funding — is hiring a Senior Software Engineer for its Developer Platform team, working fully remotely worldwide (the role cannot be performed in California or Colorado). The Developer Platform team builds KMS, the key-management and signing service behind ZeroDev's embedded wallets — non-custodial smart-account wallets that app developers drop into their products. This is security-critical infrastructure, externally audited, covering Go backend services that broker wallet creation, authentication, and signing; distributed key generation and secret sharing across independent committees; Trusted Execution Environments with hardware isolation and remote attestation; WebAuthn/passkeys, OAuth, OTP, and 2FA; and full production operations on Kubernetes. Benefits include professional reimbursement, medical/dental/vision, annual company offsite, and wellness stipend.

Required Skills