Software Engineer, Frontend / Full Stack – Identity Platform

🕒 March 28

🇺🇸 United States – Remote

⏰ Full Time

🟠 Senior

🔴 Lead

🧑‍💻 Full-stack Engineer

🦅 H1B Visa Sponsor

This company has sponsored H1B visas in the past.

👻 Ghost score 33%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Phantom

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2021

₿ Crypto

🔐 Security

🌐 Web 3

Crypto • Security • Web 3

Phantom is a company that provides a digital wallet and support services for managing cryptocurrencies such as SOL, ETH, POL, and Bitcoin. It offers guidance on account management, connecting to popular crypto apps, staking, and using hardware devices like Ledger Nano. Phantom prioritizes security and assists users in managing their crypto assets safely, ensuring they are aware of potential scams and providing tips for securing their digital wallets. The platform also supports mobile access on iOS and Android devices, offering solutions for various troubleshooting issues and frequently asked questions.

📋 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.

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

🏖️ Benefits

• Competitive salary and equity • 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