William L.

Ex-Meta Custom MVP and Software Prototype Developer

I build focused MVPs and functional prototypes for early-stage founders who need something real, not just wireframes or slide decks. If you have a strong idea but no technical background, I help you turn it into a working product you can demo, test with users, and iterate on. The goal isn’t to overbuild. It’s to validate the concept quickly and create a foundation that can scale if the idea proves itself. I specialize in small, well-structured applications that solve a clear problem and deliver a clean first experience. What I Do • Design and build MVPs from scratch • Translate non-technical ideas into clear product plans • Develop proof-of-concept web applications • Structure early product architecture for scalability • Implement no-code or low-code solutions when appropriate • Build demo-ready apps for investor pitches and early testers I focus on simplicity, speed, and clarity. The first version should work, feel polished, and be understandable, not bloated with unnecessary features. Background I graduated from a top-25 American university with a strong technical foundation and have built several full-stack applications, including: An Airbnb-style marketplace platform A social calendar and event coordination application These weren’t tutorials or clones, they were fully functioning systems that required user flows, database structure, authentication, and deployment planning. Building them forced me to think about product structure, feature prioritization, and real-world usability. In addition to client work, I’ve contributed to open-source initiatives, including Meta Open Source projects, where I collaborated within structured development environments and adhered to production-level standards. How I Work Most of my clients come in with a concept, not a technical spec. I help them: Clarify the core problem Define what actually needs to be built first Cut unnecessary features Launch a functional first version quickly You don’t need a 12-person engineering team to validate an idea. You need a disciplined first build. Why Clients Hire Me • I translate technical decisions into plain language • I don’t oversell complexity • I build lean, structured systems that can evolve • I prioritize shipping over endless planning • I understand how early-stage founders think If you’re looking for someone to “build everything,” I’m not your developer. If you’re looking for someone to help you validate your idea properly and move forward with clarity, we’ll work well together.