Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hi, I'm Timothy Chu, a freelance application developer specializing in React Native, API integration, and scalable mobile architectures. With over seven years of delivering production-grade mobile apps, I thrive on turning complex requirements into clean, maintainable solutions that power real user experiences. I collaborate closely with cross-functional teams, emphasize performance, testing, and code quality, and take ownership from design to production. I'm comfortable working remotely and focused on reliability and continuous improvement to help platforms grow.…Hi, I'm Timothy Chu, a freelance application developer specializing in React Native, API integration, and scalable mobile architectures. With over seven years of delivering production-grade mobile apps, I thrive on turning complex requirements into clean, maintainable solutions that power real user experiences. I collaborate closely with cross-functional teams, emphasize performance, testing, and code quality, and take ownership from design to production. I'm comfortable working remotely and focused on reliability and continuous improvement to help platforms grow.

Timothy Chu

Full Stack Developer, Front-End Developer, Back-End Developer, +3





Hi, I'm Timothy Chu, a freelance application developer specializing in React Native, API integration, and scalable mobile architectures. With over seven years of delivering production-grade mobile apps, I thrive on turning complex requirements into clean, maintainable solutions that power real user experiences. I collaborate closely with cross-functional teams, emphasize performance, testing, and code quality, and take ownership from design to production. I'm comfortable working remotely and focused on reliability and continuous improvement to help platforms grow.…Hi, I'm Timothy Chu, a freelance application developer specializing in React Native, API integration, and scalable mobile architectures. With over seven years of delivering production-grade mobile apps, I thrive on turning complex requirements into clean, maintainable solutions that power real user experiences. I collaborate closely with cross-functional teams, emphasize performance, testing, and code quality, and take ownership from design to production. I'm comfortable working remotely and focused on reliability and continuous improvement to help platforms grow.

Available to hire

Hi, I’m Timothy Chu, a freelance application developer specializing in React Native, API integration, and scalable mobile architectures. With over seven years of delivering production-grade mobile apps, I thrive on turning complex requirements into clean, maintainable solutions that power real user experiences.

I collaborate closely with cross-functional teams, emphasize performance, testing, and code quality, and take ownership from design to production. I’m comfortable working remotely and focused on reliability and continuous improvement to help platforms grow.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Work Experience

Senior Software Engineer at The Home Depot

July 1, 2018 - Present

Designed and shipped fraud‑analysis‑focused features using React, TypeScript, Python, Golang, PostgreSQL, Docker, AWS Lambda, Cognito, and RDS, while mentoring engineers and enforcing secure coding standards. Built and optimized API‑driven microservices using Python, Golang, REST, AWS Lambda, API Gateway, and PostgreSQL, ensuring low‑latency data access for fraud detection workflows. Developed scalable frontend architectures integrating React, Next.js, Redux Toolkit, React Query, AWS Cognito auth flows, and data‑intensive UI rendering, improving analyst productivity by 35%. Implemented unit tests, integration tests, and end‑to‑end automation using Jest, React Testing Library, PyTest, and Go test frameworks, increasing platform reliability and reducing regression defects. Collaborated with Product, Design, Data Science, Infrastructure, and Solutions Engineering to define requirements, analyze product metrics, and ship features aligned with fraud-prevention goals. Troublesh

Software Engineer at The Home Depot

June 1, 2015 - July 1, 2018

Developed enterprise web applications using React, JavaScript, Python, REST APIs, SQL, Node.js, and Docker, contributing to scalable fraud-risk and identity-verification capabilities. Built API integrations using Python, Golang-like service patterns, SQL queries, caching layers, and containerized microservices, supporting both operational and analytical workloads. Delivered responsive UIs with React, modular components, accessibility practices, and performance‑first rendering, tightly integrated with backend data and fraud insights. Implemented and optimized PostgreSQL queries, schema structures, and API response patterns, improving database performance and UI data freshness. Participated in Agile ceremonies using Jira, collaborating closely with cross‑functional stakeholders and mentoring junior developers. Project highlights included Next.js SSR Performance Platform and Design System Engineering, which established a reusable component library, accelerated frontend delivery, and a

Senior Software Engineer, Mobile Applications at The Home Depot

July 1, 2018 - Present

Developed and maintained high-traffic React Native mobile applications with backend RESTful API integration and third-party services. Architected scalable features using Redux, collaborated with backend engineers and UX designers, and implemented automated testing with Jest and Detox to improve stability. Led code reviews, resolved complex integration issues, optimized startup time and memory usage, provided on-call production support, and documented designs for remote teams.

Software Engineer, Mobile Development at The Home Depot

June 1, 2015 - July 1, 2018

Built native iOS and Android features using Swift and Java; collaborated with Angular web teams for consistent UX; supported backend API integration; contributed to documentation and architecture patterns; improved app security and performed testing to minimize defects; participated in agile ceremonies and code reviews.