Frank Chang

Senior Full Stack Engineer at Anthropic

Developed an AI-powered full-stack application, integrating Claude LLM APIs with a React/TypeScript frontend and a Python (FastAPI) backend. Designed scalable REST and WebSocket APIs to support real-time collaboration with low latency. Built data pipelines using Kafka and PostgreSQL for model training and evaluation, and mentored junior engineers through code reviews and design discussions to improve code quality and delivery velocity.

Senior Full Stack Engineer at OPUS

Designed and implemented AI-powered features with a React/TypeScript frontend and a Python-based backend (FastAPI). Built data pipelines with Kafka and PostgreSQL, implemented Redis caching, and developed real-time analytics dashboards. Optimized APIs for large-scale traffic and led initiatives to improve testing and deployment practices.

Full Stack Developer at Hinge Health

Built patient-facing web features using Angular and TypeScript to improve engagement and usability for large-scale healthcare programs. Developed and maintained backend APIs and services (Node.js, GraphQL) to support real-time health data synchronization across 100k+ users, with data stored in MongoDB.

Software Developer at Bloomreach

Developed and optimized high-traffic marketing automation features using C#/.NET, JavaScript (React/Redux), and PostgreSQL, improving email campaign performance by 30%. Built real-time analytics dashboards with D3.js and WebSockets, enabling client-side tracking of engagement with sub-second latency. Migrated legacy monoliths to microservices, reducing API response times by 40% and increasing scalability. Designed RESTful APIs for third-party integrations, boosting partner adoption by 25% and streamlining e-commerce workflows. Implemented automated testing (Jest) and CI/CD pipelines (Docker, Jenkins, GitHub Actions), reducing deployment failures by 50%.