Senior Frontend Engineer / Tech Lead · 6+ years
React, TypeScript, frontend architecture. Hands-on lead: foundation, API contracts, review gates.

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Building the frontend of an early-stage fintech and crypto payments product: app shell, auth/session, onboarding, wallets, transactions, KYB-gated money flows, OpenAPI → RTK Query clients, UI kit, CI.

• Vitest — browser-mode fix in v5.0.0-rc.1. PR #10856: pre-bundle vite/module-runner so the optimized browser bundle resolves when Vite is not a direct dependency. Produced by a local agent factory I built (discovery → test-first → review → human approval).
• Govtech, 10M+ MAU — AngularJS 1.5 → React migration with a hybrid architecture, zero downtime. a11y pass, ~+30 Lighthouse. Next.js SSR/SSG content feed.
• Enterprise knowledge base — ProseMirror editor: custom schema, plugins, node views, realtime collaboration over WebSocket, BPMN / React Flow inside articles.
• Marketplace, 20M+ MAU — high-load e-commerce UI in a product team.

TypeScript · React · Next.js · Redux Toolkit · Vite · Vitest · Storybook
OpenAPI / RTK Query · Node.js · ProseMirror · React Flow · GraphQL · WebSocket
Design systems · CI/CD · a11y

M.Sc. Computational and Applied Mathematics, Far Eastern Federal University, 2023.