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# Senior Software Engineer, Developer Platform

- **Company:** Offchain Labs
- **Location:** United States (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** User Authentication, Software Design Documents, Distributed Systems, Key Management, OAuth, SSL Certificate Management, Backend, Kubernetes, Api Design
- **Published:** July 9, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=1e57fd3acc86468c

## About the Role

* A strong backend engineer who has shipped and operated production services in Go (or an adjacent systems language and is eager to go deep in Go)
 * Security-first by default: you reason about threat models, blast radius, and key custody as a habit, and you write code that holds up to security-critical review
 * Comfortable with applied-cryptography fundamentals (public-key crypto, signatures, key management). You do not need to be a cryptographer, but you can reason about it and learn fast
 * Solid on distributed systems and API design: idempotency, failure modes, and clean service boundaries
 * Operationally mature: Kubernetes, observability, and incident response are not foreign to you
 * Clear written communicator (design docs, decision records) who thrives in a collaborative, review-heavy culture

## Description

* The Developer Platform team builds KMS, the key-management and signing service behind ZeroDev's embedded wallets (smart-account / account-abstraction wallets that app developers drop into their products). It is non-custodial: end users control their keys, and the service orchestrates secure creation, authentication, and signing on top of a third-party signing provider. This is security-critical infrastructure, externally audited, with a high review bar. You will own backend services and the cryptographic recovery and trust-model machinery around them on a small, high-ownership team, and help grow the platform from interactive consumer wallets toward programmatic and automated signing and programmable transaction policy., * Go backend services that broker wallet creation, authentication, and signing at scale.
 * Key recovery and the committee trust model: distributed key generation and secret sharing that keep the service non-custodial, with recovery authority split across independent committees so no single party ever holds a user's key
 * Trusted Execution Environments: reconstructing and operating on key material under hardware isolation and remote attestation
 * Authentication and signing-provider integration: the user-facing auth methods that gate signing (passkeys / WebAuthn, OAuth, OTP, sessions, 2FA), and integrating with a third-party signing provider (authorization and policy flows, scoped credentials, quorum / consensus approvals)
 * Security review and hardening: writing design docs and decision records, working directly with external security auditors, and turning a high review bar into shipped code
 * Production operations on Kubernetes: observability and alerting, secrets and certificate management, on-call, and the compliance controls the domain requires (sanctions screening, PII-safe handling)


## Related Videos

- [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect)
- [One Platform Could Not Fit Them All](https://www.wearedevelopers.com/videos/1919-one-platform-could-not-fit-them-all)
- [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock)
- [Understanding Kubernetes in a visual way](https://www.wearedevelopers.com/videos/100085-understanding-kubernetes-in-a-visual-way)
- [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape)
- [Platform Engineering vs. DevOps Why not both?](https://www.wearedevelopers.com/videos/885-platform-engineering-vs-devops-why-not-both)

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