You have the vision. You need a technical partner who builds with you — not for you. Def0x partners with non-technical founders to validate, build, and grow production-ready products through real user feedback, not assumptions.
“I have code from another developer and I don't know what I have.”
You need an honest audit before you spend another dollar. We review what exists, tell you what's worth keeping, and give you a clear plan forward.
System Audit →“I have an idea but no technical co-founder.”
You need someone who can turn a problem into a product — and stay with you after launch. We build production-ready MVPs with real auth, real payments, and real infrastructure.
MVP Development →“I need ongoing technical leadership but can't afford a full-time CTO.”
You need a fractional partner who owns the technical strategy. We handle architecture, engineering process, and vendor decisions alongside you as the business scales.
Fractional CTO →We don't disappear into a 6-month build and hope it works. Every engagement follows the build-measure-learn loop — ship something real, get it in front of users, learn what's working, and iterate. Whether it's an audit, an MVP, or an ongoing partnership, the principle is the same: decisions based on evidence, not assumptions.
Scope the smallest version that tests your riskiest assumption.
Ship it, get it in front of real users, and track what actually happens.
Use real data to decide what to build next — then repeat.
Every engagement is scoped to the problem. No packages, no one-size-fits-all.
A structured assessment of your existing codebase, infrastructure, and third-party services. You get a prioritized backlog and a clear recommendation on what to do next.
Learn more →From zero to a production-ready product. Real authentication, real payments, real infrastructure — built iteratively with your input at every step.
Learn more →Ongoing technical leadership — architecture ownership, engineering process design, vendor decisions, and due diligence support as your business scales.
Learn more →
A personalized weight loss visualization platform that helps users understand the impact of their choices by showing realistic future weight trajectories.
Visit Live Site“Working with Robinson was a significantly different experience than my past work with other developers. Robinson listened, understood our timeline, and delivered an MVP that completely changed how we deliver our product.”

An intelligent lease analysis platform that empowers tenants to understand the risks embedded in their commercial leases.
Visit Live SiteThat's what the first call is for. Whether you're starting from scratch, inheriting a codebase, or looking for ongoing technical leadership — the discovery call is where we figure out what makes sense for your situation.
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