Contract Engineer (Freelance) - Frontend Web and Mobile Engineer at RUNIQ (SaaS automated testing platform)

Improved performance and reliability by migrating test execution monitoring from 2-second polling to WebSockets with auto-reconnect. Reduced redundant concurrent requests by ~35% using a custom HTTP client with in-flight request deduplication and token caching. Built a visual test-cycle builder using React Flow (drag-and-drop custom nodes, live run status shown on a workflow graph).

Contract Engineer (Freelance) - Frontend Web and Mobile Engineer at Stanley Paden (React Native author content platform)

Built and shipped a production React Native (Expo) app supporting multiple content types (podcasts, videos, blogs, community chat, events, e-books, audiobooks) with read-progress tracking. Implemented OTA updates in ~3 minutes and store submissions in ~6 minutes via a full CI/CD pipeline using GitHub Actions (PR checks + tests), EAS Build, EAS Update, and EAS Submit.

Frontend & Mobile Engineer at Devnito

Built web and mobile apps for clients as part of a small, founder-led engineering team. Architected and built a consumer-facing front end from scratch as front-end lead for a VC-backed asset management platform (BFF pattern, component system, data layer, and auth flow). Implemented full auth using Auth0 with HttpOnly session cookies, passwordless OTP, and passkeys, plus token exchange into a workflow so no service credentials are exposed to the browser. Also built and shipped a hospital management system end-to-end with a modular NestJS backend (JWT with rotating refresh tokens and account lockout), deployed via Docker with automated migrations. Worked on an AI agentic chat mobile product by building a message rendering system supporting 20+ message types and streaming AI responses progressively.