Senior Software Engineer, Developer Platform
Offchain Labs builds blockchain infrastructure for the programmable economy, including Arbitrum scaling technology, Prysm consensus software, and ZeroDev smart account infrastructure. It also provides enterprise blockchain services, research, strategic support, and venture initiatives for developers, enterprises, and blockchain ecosystems.
Maintainer signals as of 8/23/2026
Funding history
Projects
About Offchain Labs, Inc.
Offchain Labs is an onchain engineering and infrastructure company founded at Princeton University. Its products include Arbitrum, a leading Ethereum Layer 2 scaling platform; Prysm, Ethereum consensus software; and ZeroDev, smart account infrastructure. The company also delivers bespoke enterprise blockchain architecture and engineering services, conducts research in scalability, security, cryptography, and economic design, and operates venture initiatives including Tandem and Onchain Labs. Its clients and users include developers, enterprises, institutional operators, builders, and blockchain ecosystems.
Skills
About the Role
Join Offchain's Developer Platform team to build KMS, the key-management and signing service behind ZeroDev's embedded wallets. Own backend services, cryptographic recovery and trust-model machinery, authentication and signing integrations, and production operations for externally audited infrastructure.
Requirements
- Strong backend engineering experience shipping and operating production services in Go or an adjacent systems language.
- Security-first mindset with experience reasoning about threat models, blast radius, and key custody.
- Applied cryptography fundamentals including public-key cryptography, signatures, and key management.
- Distributed systems and API design knowledge, including idempotency, failure modes, and service boundaries.
- Operational maturity with Kubernetes, observability, and incident response.
- Clear written communication skills for design documents and decision records.
- TEE experience is a plus.
- Threshold cryptography or MPC experience is a plus.
- Account abstraction and smart-account wallet experience is a plus.
- Custody or signing-provider experience is a plus.
- HSM, YubiKey, PIV, or secure-element integration experience is a plus.
- Third-party security audit and remediation experience is a plus.
- WebAuthn, passkeys, OAuth/OIDC, and Go crypto ecosystem experience is a plus.
Responsibilities
- Build Go backend services for wallet creation, authentication, and signing at scale.
- Implement key recovery and committee trust models using distributed key generation and secret sharing.
- Operate trusted execution environments with hardware isolation and remote attestation.
- Integrate passkeys, WebAuthn, OAuth, OTP, sessions, 2FA, and third-party signing providers.
- Write design documents and decision records and work with external security auditors.
- Operate Kubernetes production systems, including observability, alerting, secrets, certificates, on-call, and compliance controls.
- Implement sanctions screening and PII-safe handling.
Benefits
- Remote-first global workforce with NY office
- Annual company offsite and team onsites
- Professional reimbursement program
- Medical, dental, and vision coverage
- 401k retirement plan with company match
- Wellness stipend
- Home office setup and ergonomic equipment program