Alejandro Chang

I'm a senior full-stack engineer with 6+ years of experience building web, mobile, and backend systems across startups and one of the largest tech companies in the world. I've worked across the stack — React, Next.js, Node, Nest.js, GraphQL, MongoDB, SQL — but I care less about any one technology and more about solving the right problem well.


At TikTok, I founded the U.S. Frontend Engineering department as its first engineer and helped scale it from 2 people to 75+ engineers across 8+ teams, while owning core surfaces like the Help Center, Accessibility Page, and Year on TikTok. At Overflow, I've led payment integrations that drove 187%+ MoM growth, re-architected our client dashboard, and built an internal event-standardization system so teams could measure impact with real data instead of guesswork.


I'm most effective when I'm close to the "why" behind a product — understanding what actually moves the needle, then cutting through noise to build it. I've interviewed 250+ engineers, mentored teammates through SowingDev and internally, and consistently gravitate toward the highest-leverage problem in the room, whether that's an architecture decision, a broken process, or a missing metric. Clear communication and context are, in my experience, the real bottleneck on most teams — I try to close that gap wherever I show up.