Full Stack Engineer (Web, Frontend Oriented) - AI Facial Recognition, Identity & Security

About the role

Binance's Identity & Security team builds the registration, login and account security experience for its 300M+ users, including social login, OAuth, multi-factor authentication, passkeys and FIDO2. It is building an in-house AI facial recognition security product for KYC verification and user safety, replacing a third-party vendor solution, and ships across web, mobile mini programs and in-app webviews while publishing shared authentication libraries and SDKs.

Key responsibilities

• Build the in-house AI facial recognition product end to end: KYC verification, liveness detection and face matching.
• Build authentication capabilities end to end: passkeys / FIDO2 (WebAuthn), authenticator apps, security keys, SMS and email verification, and biometric flows.
• Own the multi-factor authentication orchestration layer, including verification strategy, step-up logic and user-level customization.
• Work with the AI algorithm team to integrate facial recognition and liveness detection into the frontend and backend, building high-concurrency, low-latency inference services.
• Maintain and evolve shared security component libraries and authentication SDKs, including bundle size, initialization behavior and backward compatibility.
• Develop and operate the Node.js server-side layer: server-side rendering, route-level auth guards, session validation, localized routing and first-paint performance.
• Build and refine the BFF layer, aggregating upstream security services and turning raw error codes into usable results.
• Use funnel and event data to optimize login and verification flows, and own end-to-end delivery of a sub-domain such as passkeys, MFA or facial recognition.

Required profile

• Bachelor's or Master's degree in Computer Science, Engineering or equivalent industry experience.
• 3-8 years of frontend or full stack experience, including consumer-facing products.
• Fluency in Mandarin is required; additional languages are an advantage.

Required skills

• HTML, CSS, React, JavaScript/TypeScript, browser rendering, networking, caching and performance optimization.
• Node.js: server-side rendering, isomorphic applications, BFF layering, API aggregation and caching, and debugging server-side issues.
• Modular architecture, component design, unit and E2E testing, CI/CD, and versioning and staged rollouts for shared libraries.
• Proficiency with AI-assisted development tools such as Cursor, Claude Code and Copilot.

What we offer

• Competitive salary and company benefits.
• Remote-first, work-from-home arrangement (may vary by role and team).
• A flat, user-centric global organization with opportunities for career growth and continuous learning.