Evolving an operational retail app for real-world use
2018–Present
Designing for speed, flexibility, and recovery in an environment where every second counts and interruption is the norm.
2018–Present
David McCullough
designer, engineer, dad
I shape complex systems, information, and processes into thoughtful products.
Today, I own product design across an enterprise retail SaaS platform. I work closely with Product and Engineering—mentoring PMs and engineers, resolving consequential UX decisions, and enabling teams to ship higher-quality work.
I began in software engineering and grew into product-design leadership. I’m a generalist by nature: technically fluent, detail-obsessed, and invested in helping teams turn ambiguous problems into more ambitious products.
Outside of work, I'm drawn to things with character and longevity: old houses, antique rugs, passion project indie games. I'm based in Tucson, Arizona, where I live with my family and our dog, .
Selected work
Recent case studies
How do you move a support-heavy product to self-service without disrupting the customers already using it?
2026–Present
Designing Clarity at scale
2025–Present
A fragmented product suite with a modernization mandate. I delivered a cross-platform design system under lean resourcing constraints.
2025–Present
