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

As a Full Stack Engineer at Binance, you will build the in-house AI facial recognition security product for KYC verification and user safety, serving hundreds of millions of users across web, mobile mini programs, and in-app webviews. You join the Identity & Security team, which owns registration, login, and account security for Binance's 300+ million users. Your work balances enormous scale, strict security and regulatory constraints, and the need to verify legitimate users while blocking attackers.

What you'll do

• Build the in-house AI facial recognition security product end to end, including KYC verification, liveness detection, and face matching, replacing the existing third-party vendor solution
• Build authentication capabilities end to end: passkeys and 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, balancing security strength against completion rate with measurable outcomes
• Collaborate closely with the AI algorithm team to integrate facial recognition, liveness detection, and other AI model capabilities into the product frontend and backend, building high-concurrency, low-latency online inference services
• Maintain and evolve the shared security component and logic libraries consumed by multiple product applications, and the authentication SDKs published across the company, taking responsibility for bundle size, initialization behavior, and backward compatibility
• Develop and operate the Node.js server-side layer: server-side rendering, route-level authentication guards, session validation and redirects, localized routing, and first-paint performance
• Build and refine the BFF layer, aggregating upstream security services and turning raw error codes into results the frontend can consume and users can act on
• Use funnel and event data to identify drop-off in login and verification flows, and drive optimization from evidence rather than intuition
• Collaborate closely with product, design, risk, customer support, backend, iOS, and Android teams; independently own the end-to-end design and delivery of a sub-domain such as passkeys, MFA orchestration, or facial recognition verification

What you bring

• A Bachelor's or Master's degree in Computer Science, Engineering, or equivalent industry experience
• 3 to 8 years of frontend or full stack engineering experience, including consumer-facing products taken from zero to one or evolved over multiple years
• Strong web fundamentals: HTML, CSS, React, JavaScript/TypeScript, browser rendering, networking, caching, and performance optimization
• Production Node.js experience: server-side rendering or isomorphic applications, BFF layering, API aggregation and caching, and the ability to independently debug server-side runtime issues
• A clear methodology for modeling complex flows, such as authentication and verification which are highly branched, stateful, interruptible, and resumable, and need to be abstracted into testable, reusable models rather than nested conditionals
• Solid engineering practice: modular architecture, component design, unit and E2E testing, CI/CD, and responsible judgment on breaking changes to shared libraries (versioning, staged rollout, rollback)
• Proficiency with AI-assisted development tools (Cursor, Claude Code, Copilot, etc.) with practical experience incorporating them into daily development workflows
• Fluency in Mandarin to coordinate with overseas partners and stakeholders

Nice to have

• Additional languages beyond Mandarin

What we offer

• Competitive salary and company benefits
• Remote-first work arrangement (may vary depending on the nature of the role and team)

About Binance

Binance is a leading global blockchain ecosystem and the world's largest cryptocurrency exchange by trading volume and registered users. Trusted by 300+ million people in 100+ countries, Binance offers trading, finance, education, research, payments, institutional services, and more, with a mission to increase the freedom of money and financial access for people worldwide.