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Eric Chao

@ericchao

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Senior software engineer building scalable AI-powered web platforms and data-driven APIs.

United States

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What I'm looking for

I’m looking to build scalable, AI-powered web platforms in Agile teams—owning microservices, performance optimization, and dependable APIs, while mentoring engineers and delivering measurable business impact.

I’m a Senior Software Engineer with 7+ years building scalable, production-grade web applications and data-driven platforms. I specialize in architecting microservices, optimizing system performance, and delivering reliable APIs using Python (FastAPI), Golang, Lua, Node.js, and PHP.

In my recent work, I developed an AI-powered data platform with FastAPI and Next.js, using LangChain to build RAG-based semantic search that improved search accuracy by 45%. I also established background ingestion pipelines (1M+ records/day), drove performance and reliability with Redis caching (<100ms response time), and strengthened quality through comprehensive unit and integration testing—raising test coverage to 85% and lowering production defects by 25%.

Experience

Work history, roles, and key accomplishments

Senior Software Engineer

JPMorgan Chase

Dec 2024 - Dec 2025 (1 year)

Built an AI-powered data platform with Python (FastAPI) and Next.js using LangChain, serving 50K+ requests/day with <100ms latency via Redis caching. Implemented RAG semantic search (Pinecone/FAISS) improving accuracy 45%, delivered SSR dashboards, and increased test coverage to 85% while reducing production defects 25%.

Python fastAPI Next.js RAG Redis Vector Databases Pinecone Faiss Pytest Lang Chain

Software Engineer

JPMorgan Chase

Jul 2021 - Dec 2024 (3 years 5 months)

Developed scalable web platforms with React/Next.js/TypeScript and Node.js, enabling SSR/static generation with 40% faster load times and stronger SEO. Built API services with Express/NestJS + PostgreSQL, containerized with Docker for AWS ECS/S3 deployment, improved CI/CD with GitHub Actions (30% faster), and delivered WebSocket dashboards for 10K+ concurrent users.

React Next.js TypeScript Node Express NestJS PostgreSQL AWS ECS Docker WebSockets

Software Engineer

Tata Consultancy Services

Jul 2019 - Jul 2021 (2 years)

Modernized legacy PHP systems into Laravel backend services with Vue.js/AngularJS, reducing maintenance effort 40% and improving UI rendering performance by 45%. Implemented REST APIs with resilient error handling, optimized MySQL queries (35% faster), integrated PayPal and HubSpot to automate workflows (25% less manual effort), and increased PHPUnit test coverage to 75%.