Leonard W.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Mar 30, 2026.

I’m a full stack developer who works on web and mobile applications, often with AI features when they actually make sense for the product. My background is in full stack development, so I’m comfortable working across the entire system. That includes application logic, APIs, data flow, and integrating AI services in a way that feels natural instead of forced. I’ve worked on both new builds and existing systems that needed fixes, improvements, or new features added carefully. A lot of my work involves understanding how things are already set up and making changes without breaking what’s working. I value clean structure, stability, and solutions that hold up over time. I keep communication straightforward, work independently, and stay organized from start to finish. Tech Stack AI: OpenAI APIs, ChatGPT, API Integration Web: React, Next.js, Vue.js, Nuxt.js, Node.js, Laravel Languages: JavaScript, TypeScript, PHP Data: MySQL, PostgreSQL Automation : Zapier, Make, n8n, Pipedream, Webhooks No-Code/Low-Code : Bubble, Webflow, Retool, Airtable, Glide