Jun Jia Lai
SWE Intern @ Meta | MSWE Student @ UCI | Ex-FE @ FunNow | Ex-SWE @ Mitake
- Role
- Software Engineer at Meta
- Location
- Los Angeles, CA, US
- LinkedIn followers
- 500 followers
About Jun Jia Lai
Incoming Software Developer Intern @ Meta | MSWE @ UCI I’m a fullstack engineer with 3+ years of experience delivering scalable solutions in fintech and e-commerce. Previously at Funnow, I led several high-impact initiatives in web performance optimization and cross-functional platform development. Now at UC Irvine, I’m deepening my technical foundations and excited to join Meta’s Ads team to build innovative systems at scale.
Experience
Software Engineer
Jun 2025 — Present · Menlo Park, CA, US
Drove the development of a third-party ad measurement platform using Hack (PHP) and React in 2 months, contributing $15.1M in revenue- Resolved cross-team authorization issues by initiating and leading weekly spec reviews, unblocking 3 critical integration challenges and aligning all stakeholders- Made a system analytic document for Private Lift, defining basic and advanced scopes, milestones, and codereferences to guide technical execution- Migrated legacy GraphAPI to a GraphQL service to enable third-party measurement, enhancing query speed by 20%- Refactored hard-coded ad steppers into reusable components with a visibility-control hook, improving scalability and maintainability- Configured third-party measurement Ent NoSQL schema to expose partner data tables to the GraphQL server layer- Authored exhaustive documentation, Hack unit tests, and JavaScript end-to-end tests, increasing test coverage to 70%
Education
National Taiwan University
Bachelor of Business Administration - BBA, Business Administration
2015 — 2019
UC Irvine
Master's degree, Master of Software Engineering
2024
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