[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, combining everything needed for managing, spending, and growing money in one intuitive experience. The role involves owning and evolving the signing path for transactions, building secure authentication flows, and ensuring the reliability of critical systems.

Responsibilities

• 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

Skills

• 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
• Web3/wallet or signing-flow experience
• Security- or money-adjacent experience (identity, payments, custody)
• Rust experience (or strong interest in learning it)

Benefits

• Comprehensive insurance (medical/dental/vision) — 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
• Global off-sites
• Competitive salary and equity

Company Overview

Phantom 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 Sponsorship

Phantom has a track record of offering H1B sponsorships, with 3 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.