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About Me
Who's Katie Choi?
Hello! I'm a design engineer and product manager passionate about understanding user needs and translating them into product strategy. My technical background helps me collaborate effectively with engineering teams while my product thinking drives user-centered solutions.
I'm currently pursuing a BA in Computer Science at Princeton University (expected May 2027), where I've led product development for mobile-first platforms, conducted user research, and managed MVPs from concept to launch. My experience spans product strategy, user research, prioritization frameworks, and cross-functional collaboration.
Born and raised in Los Angeles, I moved to the East Coast for University and have come to love the best of both worlds. When I'm not working on products, I'm likely writing creative pieces, spending time with friends, or playing beach volleyball.
Contact me at katiegchoi@gmail.com
Mobile Results Redesign
As a product designer intern at GPTZero, I redesigned how users read and trust GPTZero's detection results on mobile.
GPTZero is one of the most widely used AI detection platforms, but its mobile experience was an afterthought. As the product design intern, I led the redesign of GPTZero's mobile results view — rebuilding how a scan is read, trusted, and acted on from a phone.
Users weren't scanning because they were overwhelmed by our initial entry point, and weren't aware they could upload photos — one of our scan types on mobile.
I combined qualitative and quantitative research: user interviews, a full audit of the existing mobile flow, and session data on where people dropped out.
"How they're separated is super unintuitive."
GPTZero's scans aren't interchangeable, so I resisted forcing them into one generic template — each type got a view tailored to the question it answers and how its results are best read on a phone.
The original screen split the verdict from the evidence. The redesign reunites them — one scroll, one context.
Basic, advanced, and plagiarism scans each answer a different question — so each got its own layout, hierarchy, and default state.
Mobile users needed a menu that suited their needs, not the desktop's. A side-menu nav bar became the change that made the redesigned screen feel effortless to move through.
Once our screens were finally optimized, mobile traffic rose dramatically. Users began organically sharing their scans — some reaching virality and driving new customers to GPTZero.
Mobile deserves its own thinking. The biggest unlock wasn't a new feature — it was recognizing that a mobile results view can't just be a compressed desktop layout.
Fractured context kills trust. Users need to see the result and the evidence at the same time — reuniting the two on one screen turned frustration into engagement.
Navigation is invisible until it fails. Once the core layout worked, movement became the bottleneck — a side menu nav bar was what made the redesigned screen feel effortless to move through rather than just nice to look at.
A good mobile moment is inherently shareable. When the experience got easy enough, users turned it into content on their own.