Former investigator → UX/UI Product Designer.
I investigate product crime scenes, untangling messy UX flows, outdated design systems, and complex B2B SaaS products.

Former investigator → UX/UI Product Designer.
I investigate product crime scenes, untangling messy UX flows, outdated design systems, and complex B2B SaaS products.

Former investigator → UX/UI Product Designer.
I investigate product crime scenes, untangling messy UX flows, outdated design systems, and complex B2B SaaS products.

WAISUMCHOY

WAISUMCHOY

WAISUMCHOY

(ABOUT ME)

I am Sum, meaning 'heart' in Chinese.

As a product designer with a unique background in law enforcement and financial crime compliance, I bring a diverse skill set to the tech industry. My experience spans digital professional coaching, automotive design, and contract management, with a focus on complex UX projects.


My journey began as a detective in Hong Kong, where I progressed from a Sub-unit Commander to roles at divisional, district, and Headquarter levels. This experience sharpened my problem-solving skills, resilience, and leadership abilities, which I now apply to my work in tech.

After relocating to Germany and working in financial crime compliance, I transitioned to tech and product design. I have since collaborated with early-stage startups and an agency specializing in automotive design, contributing to UX projects for Volkswagen commercial vehicles.

I do my best work remotely when I need deep focus, but I genuinely enjoy office time too. Coffee chats, design critiques, being around the team, and yes, killing the snacks!

Outside of work, I draw @Puiyi Comics based on my daily life, experimenting with different character styles and storytelling approaches.

(MEET ME)

WAISUM CHOY

Product Designer

"It ain't about how hard you hit, it is about how hard you can get hit and keep moving forward." - Rocky IV (Fun Fact: I am also a 'Southpaw' like Rocky i.e. left-handed.)

WAISUM CHOY

Product Designer

"It ain't about how hard you hit, it is about how hard you can get hit and keep moving forward." - Rocky IV (Fun Fact: I am also a 'Southpaw' like Rocky i.e. left-handed.)

WAISUM CHOY

Product Designer

"It ain't about how hard you hit, it is about how hard you can get hit and keep moving forward." - Rocky IV (Fun Fact: I am also a 'Southpaw' like Rocky i.e. left-handed.)