Tracy Lum
Senior Software Engineer at GitHub
New York, New York, United States
Summary
🤩
Rockstar🎓
Top SchoolTracy Lum is a Senior Software Engineer based in New York with 11 years of full-stack experience building production systems in Elixir, Ruby, JavaScript, and CSS using Phoenix, Rails, React, and Redux. At GitHub and previously at Vimeo and Flatiron School, she has led end-to-end feature work—owning tech specs, UI design, data model changes, and cross-team coordination—to deliver billing, promotions, and enrollment systems that handle high event volumes and financial accuracy. She has strong domain experience in payments, tax integration, analytics pipelines, and refactoring monoliths into service-oriented designs, often advocating for pairing and thorough design spikes to reduce risk. Tracy pairs product sensibility with operational rigor, having designed scalable S3-based event transfers and automated invoicing and verification flows. Beyond shipping features, she invests in team health through documentation, mentoring, and technical culture-building like running book clubs and improving onboarding. Her background in journalism and research informs a detail-oriented, communicative approach to complex engineering problems.
11 years of coding experience
6 years of employment as a software developer
Bachelor's Degree, Economics, English; Mathematics (minor); Chinese (minor), Bachelor's Degree, Economics, English; Mathematics (minor); Chinese (minor) at Bucknell UniversityWeb Development Immersive Program, Web Development Immersive Program at Flatiron School
English
Github Skills (90)
github10
bem10
component-library10
cmark10
sass-framework10
capybara10
github-issues10
mental-health10
meta10
css10
sass10
redux10
react10
rendering9
javascript9
Programming languages (9)
Github contributions (5)
talum/building-git
Sep 2021 - Dec 2024
Notes from Building Git
Contributions:1 review, 7 PRs, 35 pushes in 3 years 3 months
notesversion-controlgit-gui
talum/ttt-game-status-v-000
Oct 2017 - Oct 2017
Contributions:196 pushes, 1 branch in 11 days
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