Key skills
Node.jsAuthentication protocolsKey management servicesTypeScriptWeb3/Crypto KnowledgeSystem DesignLeadershipCommunicationRustNestJSAWSVaultMentoring
About this role
Phantom is a modern money app that combines everything needed for financial management in a simple, intuitive experience. The role involves owning and evolving the core authentication infrastructure, leading the design and operation of security measures, and ensuring robust identity foundations for product teams.
Responsibilities:
- Authentication systems
- Architect and ship production-grade improvements to Phantom’s Auth stack (e.g. secure enclaves, hardened token flows, threat modeling)
- Passkey (WebAuthn) & MFA
- Secrets management
- Design and build systems using modern secrets management technologies to push security and functionality to the next level
- APIs & Integration
- Define and maintain stable, versioned auth APIs for downstream teams
- Partner with cross-functional stakeholders to ensure seamless rollouts
Requirements:
- 7+ Years of Backend Experience: Demonstrated success in building large-scale, high-availability systems in Node.js, TypeScript, Rust, NestJS (or similar frameworks)
- Deep expertise in authentication protocols (OAuth2/OIDC, WebAuthn/Passkeys, OTP), Strong background in key management services (e.g. AWS KMS, Vault) and cryptography
- Strong System Design & Architecture Skills: Ability to translate product requirements into scalable, maintainable solutions, with a keen eye for performance trade-offs and fault tolerance
- Leadership & Communication: Experience mentoring engineers, leading technical initiatives, and collaborating effectively with cross-functional teams
- Web3/Crypto Knowledge: Familiarity with on-chain data, wallet integrations, or decentralized application patterns is strongly preferred