[Remote] Software Engineer, Frontend / Full Stack (Identity Platform)

Note: The job is a remote job and is open to candidates in USA. Phantom is the modern money app used by tens of millions around the world. The role involves owning and evolving the core authentication infrastructure that secures every Phantom account, leading the design, implementation, and operation of security measures such as multi-factor authentication and key-management services.ResponsibilitiesAuthentication systemsArchitect and ship production-grade improvements to Phantom’s Auth stack (e.g. secure enclaves, hardened token flows, threat modeling)Passkey (WebAuthn) & MFASecrets managementDesign and build systems using modern secrets management technologies to push security and functionality to the next levelAPIs & IntegrationDefine and maintain stable, versioned auth APIs for downstream teamsPartner with cross-functional stakeholders to ensure seamless rolloutsSkills7+ 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 cryptographyStrong System Design & Architecture Skills: Ability to translate product requirements into scalable, maintainable solutions, with a keen eye for performance trade-offs and fault toleranceLeadership & Communication: Experience mentoring engineers, leading technical initiatives, and collaborating effectively with cross-functional teamsWeb3/Crypto Knowledge: Familiarity with on-chain data, wallet integrations, or decentralized application patterns is strongly preferredBenefitsCompetitive salary and equityComprehensive insurance (medical/dental/vision) — 100% coveredStipend for your ideal remote set-upFlexible hours and a supportive remote environmentUnlimited vacation: Take time when you need it (and we really mean it!)401(k) retirement planMonthly wellness benefitWeekly meal benefitGlobal off-sitesCompany OverviewPhantom is a crypto wallet that facilitates the buying, trading, and storing of cryptocurrencies, including NFTs and tokens. It was founded in 2021, and is headquartered in San Francisco, California, USA, with a workforce of 51-200 employees. Its website is https://phantom.com.Company H1B SponsorshipPhantom has a track record of offering H1B sponsorships, with 2 in 2026, 4 in 2025, 3 in 2024, 4 in 2023, 3 in 2022. Please note that this does not guarantee sponsorship for this specific role.