I’m a Software Engineer passionate about crafting high-impact user experiences with TypeScript, React, and more, combining a background in research and full-stack development to build scalable, data-driven solutions that drive measurable growth and product innovation.
Implemented a feature that fills in a day-to-day itinerary for any of 2,000 cities around the world using Typescript, Node.js, and React which showed 6% greater 8-week user retention and was featured on [a daytime talk show](https://danielkoh.dev/ctv)
•
Led a team of 3 engineers to optimize our React Native app by patching upstream dependencies to cache frequently called functions, eliminating performance-related Play Store complaints over 3 months and raising the app rating from 4.6 to 4.7 stars
•
Collaborated with the lead designer to implement a new mobile web landing page in React for post-ad-click users, increasing start trial rates by 10%
•
Built a service in Node.js to compile trip plan updates and integrate them into an existing notification system, improving re-engagement and boosting 8-week retention by 4%
•
Delivered an LLM-based email parsing system to replace a legacy AwardWallet contract, pioneering a batch-testing framework for rapid prompt optimization and securing a 12% lift in positive user feedback and a seamless transition ahead of the contract renewal deadline
Built a Python Flask web app to automate participant selection for research study, reducing processing time from 2 days to 5 seconds and demonstrating scalability for high-efficiency workflows
•
Served as a key coordinator between multiple labs, university departments, and external vendors to facilitate a large-scale research project, ensuring seamless communication and collaboration
•
Mentored, trained, and supervised a team of undergraduate assistants in laboratory procedures, fostering their development and ensuring data quality
