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Software Engineer, Frontend / Full Stack (Identity Platform)

πŸ“… Sep 5, 2025
TypeScriptNode.jsWebauthnMFA

πŸ“œ Description

  • Own and evolve the signing path for every transaction in Phantom.
  • Build and harden authentication, unlocking, biometrics, and account access flows across web and mobile.
  • Ship passkeys (WebAuthn) and MFA improvements with a strong security/usability balance.
  • Own onboarding and key lifecycle flows: key generation/derivation, seed phrase flows, seedless registration, hardware wallet pairing.
  • Own sensitive key export/import experiences and related safety rails.
  • Write and maintain high-signal, non-flaky tests (unit/integration/e2e) for critical paths; ensure safe rollouts via monitoring and staged releases.

πŸ› οΈ Requirements

  • 7+ years of experience
  • Strong TypeScript skills; comfortable shipping code across browser, Node.js, and mobile JS runtimes.
  • Proven ability to build high-signal, low-flake test suites for critical systems.
  • Familiarity with auth concepts and common mechanisms (sessions/tokens, MFA/OTP, WebAuthn/passkeys)
  • Strong engineering fundamentals: system design, debugging, and production reliability.
  • Deeper experience with OAuth2/OIDC, WebAuthn internals, cryptography, or key management systems is a plus.
  • Web3/wallet or signing-flow experience is a plus.
  • Security- or money-adjacent experience (identity, payments, custody) is a plus.

✨ Benefits

  • Competitive salary and equity
  • Comprehensive insurance (medical/dental/vision) β€” 100% covered
  • Stipend for your ideal remote set-up
  • Flexible hours and a supportive remote environment
  • Unlimited vacation: Take time when you need it (and we really mean it!)
  • 401(k) retirement plan
  • Monthly wellness benefit
  • Weekly meal benefit
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