Senior Go Backend Engineer, Security-Critical Blockchain

Remote; San Francisco (CA); Remote; USD 180,000 - 240,000; Full time

Benefits offered by this job

Remote-first

Annual company offsite

Professional reimbursement program

Medical, dental & vision coverage

401k retirement plan + company match

Wellness stipend

Home office set up / ergonomic program

Job summary

Offchain is leading the charge in blockchain scalability and security, building the Arbitrum stack and supporting a growing Ethereum ecosystem. As a backend-focused engineer, you will own secure, non-custodial wallet infrastructure, drive cryptographic processes, and scale services responsibly with a security-first approach.

You will work on Go-based backend systems, key management, and trusted execution environments, collaborating with auditors and cross-functional teams to ship robust,

Qualifications

• Backend engineer with production Go experience.
• Security-first mindset with threat-model awareness.
• Strong understanding of distributed systems and robust API design.

Responsibilities

• Develop Go backend services that handle wallet creation, authentication, and signing at scale.
• Implement key recovery and distributed trust models with committee oversight.
• Work with TEEs for secure key material handling and remote attestation.
• Integrate authentication/signing providers (passkeys, WebAuthn, OAuth, OTP) and third-party signing services.
• Contribute to security reviews, design docs, and external audits.
• Maintain production operations on Kubernetes, including observability and incident response.

Skills

Go

Distributed systems

Security

Tools

Kubernetes

Job description

Offchain is leading the charge in blockchain scalability and security, building the Arbitrum stack and supporting a growing Ethereum ecosystem. As a backend-focused engineer, you will own secure, non-custodial wallet infrastructure, drive cryptographic processes, and scale services responsibly with a security-first approach.

You will work on Go-based backend systems, key management, and trusted execution environments, collaborating with auditors and cross-functional teams to ship robust,