Muhammad F.

🏆 𝟏𝟓 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 || 🥇 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝑵𝒆𝒆𝒅 𝒂 𝒔𝒆𝒏𝒊𝒐𝒓 𝒆𝒏𝒈𝒊𝒏𝒆𝒆𝒓 𝒕𝒐 𝒃𝒖𝒊𝒍𝒅 𝒐𝒓 𝒔𝒄𝒂𝒍𝒆 𝒚𝒐𝒖𝒓 𝒘𝒆𝒃 𝒐𝒓 𝒎𝒐𝒃𝒊𝒍𝒆 𝒂𝒑𝒑? I help startups and businesses turn ideas into scalable, production-ready SaaS products. With 15 years of experience, $327K+ earned across 72 contracts on Upwork, 8,960+ hours delivered, and a 100% Job Success score, I've shipped high-quality solutions for startups and growing companies worldwide. I work across ad tech and health tech. Most recently I was the lead engineer at AppIQ (ad tech), where I owned the architecture of a data-driven platform that optimizes marketing funnels with ML-powered A/B testing — a React frontend, a Payload CMS backend, a Cloudflare edge stack, and data pipelines feeding a self-managed ClickHouse warehouse. Before that I built React Native features for Yas.life, a health-tech app live on the App Store and Google Play. What I can help you with: ✔ Full-stack SaaS development (React, Next.js, Node.js, NestJS, TypeScript, PayloadCMS) ✔ Mobile apps (React Native, Flutter) with native iOS/Android builds and store releases ✔ AI-enabled features and AI-first development (Claude, OpenAI, Gemini; RAG and vector search; MCP servers I've built myself) ✔ Cloudflare architecture (Workers, Queues, KV, R2) and scalable data pipelines ✔ PostgreSQL, MongoDB and ClickHouse — schema design through to analytics ✔ API development and third-party integrations ✔ Scaling, refactoring, and hardening existing applications Proven experience: • Built and scaled multiple SaaS platforms, from MVP to production • Sole technical decision-maker and lead engineer at an ad-tech startup • Founded and ran a software company, leading a team of 10+ developers • Long-term collaborations, consistent 5-star feedback, and repeat clients Tech stack: React, Next.js, React Native, Node.js, NestJS, TypeScript, GraphQL PostgreSQL, MongoDB, ClickHouse, Cloudflare (Workers/Queues/R2/KV), AWS, Firebase, Docker Flutter, PayloadCMS, Tailwind, Redux, Jest / Vitest / Playwright How I work: I focus on clear communication, clean architecture, and reliable, maintainable code, with tests and CI as defaults. I don't need detailed specs to make progress, and I'll tell you when I think something shouldn't be built. I use AI seriously in my workflow while reading and standing behind every line that ships. Availability: I'm available now, I work full US Eastern business hours, and I'm open to both contract and full-time engagements. 𝑳𝒆𝒕'𝒔 𝒅𝒊𝒔𝒄𝒖𝒔𝒔 𝒚𝒐𝒖𝒓 𝒑𝒓𝒐𝒋𝒆𝒄𝒕. 𝑰 𝒂𝒎 𝒂𝒗𝒂𝒊𝒍𝒂𝒃𝒍𝒆 𝒂𝒏𝒅 𝒓𝒆𝒂𝒅𝒚 𝒕𝒐 𝒉𝒆𝒍𝒑.