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A client's app was wiping financial records on every deploy. I migrated their live database to PostgreSQL with zero downtime and zero data loss. Whether it's a rescue like that or a full SaaS build, nearly every client hires me back for the next phase. I'm a Node.js backend developer with four years building and stabilizing production systems across Healthcare, FinTech, EdTech, and Real-Time platforms, industries where uptime and data integrity aren't optional. These days I do more than backend. I build and ship complete full-stack SaaS products end to end, from PostgreSQL database to a deployed React or Next.js frontend, for founders who need one developer they can trust with the whole thing. That trust is the part I'm proudest of. Nearly every client in my Upwork history has hired me again, for the next phase, the next build, or a long-term seat on their technical team. What clients say about working with me: "One of the most complete and professional engagements I've experienced on Upwork." A full production SaaS build, delivered ahead of schedule on every milestone. "He doesn't just build what you ask, he builds what you're actually trying to create." Rehired across three consecutive project phases. "A developer you can trust." Said again and again by non-technical founders who needed the work explained clearly at every step. What I build for clients: Full-stack SaaS products. Complete builds from database to deployed frontend using Node.js, TypeScript, React, and Next.js. Real-time mechanics, payment integration, admin dashboards, documented so any developer can pick it up and run. API development. High-performance RESTful APIs and clean API integration using Express and NestJS, designed to handle load and stay maintainable as your product grows. Microservices architecture. Modular, independently deployable services with clean communication between them, built for scale from day one. Database architecture and migration. MongoDB and PostgreSQL schemas structured for speed and integrity. I specialize in zero-downtime migrations on live systems, having moved production databases twice for the same client without losing a single record. AI app development. Practical AI model integration into real backends, from OpenAI-powered features to AI-assisted workflows running inside live products. Infrastructure and deployment. Docker, CI/CD, AWS, and monitoring so nothing catches you off guard. Real-world solutions I've built: 🎵 Full SaaS Platform Build (Omni-Bingo) Built a complete music-bingo SaaS from scratch. Node.js backend on Railway, PostgreSQL, Stripe payments with webhooks, admin dashboard, gamified leaderboards with server-verified winners, and a mobile-optimized frontend. Delivered ahead of schedule across three project phases and counting. 🛠️ SaaS Bug Fix and Technical Audit Fixed a complex bug breaking deliverable generation across a 10-stage AI-assisted application, then audited the entire codebase and delivered an honest, specific assessment the founder could make real business decisions from. ☁️ Zero-Downtime Database Migrations Migrated live production databases, MongoDB to PostgreSQL, and MySQL to Supabase PostgreSQL with Row Level Security, with zero downtime and zero data loss, killing corruption bugs that were wiping user progress and financial records on every deploy. 📡 Real-Time Systems Built real-time messaging and live game mechanics using Node.js, Socket IO, and WebSockets, then migrated a live real-time backend from Replit to Railway without dropping a connection. 🏥 Healthcare Data Pipeline Built a Node.js backend processing 1,000+ patient records daily with role-based access control and compliance-aligned data handling from day one. If you need a developer who builds it right, communicates clearly, and sticks around for what's next, let's talk.

I am a passionate Full-Stack Developer and Lovable Developer dedicated to building modern, high-performing websites, web applications, and AI-assisted digital solutions that help businesses grow online. I specialize in Lovable.ai website development, website migration, responsive web design, full-stack development, and SEO-ready website implementation. My focus is on creating fast, scalable, conversion-focused websites and web applications that deliver exceptional user experiences across desktop, tablet, and mobile devices. My expertise includes designing intuitive user interfaces, developing mobile-first websites, integrating third-party APIs, building scalable SaaS platforms, creating custom web applications, and implementing performance optimization strategies that improve user engagement and business results. I work with modern development tools and AI-assisted workflows to deliver secure, reliable, and production-ready solutions tailored to each client's goals. What I can help you with: • Lovable.ai website design and development • Lovable.dev website customization and optimization • Lovable to WordPress migration and conversion • Full-stack web application development • Responsive and mobile-first website design • Custom landing page development • SaaS website and web application development • UI/UX design improvements and conversion optimization • API integrations, automation, and third-party services • Frontend development (React, JavaScript, HTML, CSS) • Backend development and database integration • Supabase integration and web application development • Payment gateway and booking system integration • SEO optimization and technical SEO implementation • On-page SEO, metadata, and website structure optimization • Google Analytics and Google Search Console setup • Website performance optimization and Core Web Vitals improvements • Cross-browser compatibility testing and QA • Website migration and platform conversion projects • Bug fixes, maintenance, and feature enhancements • Long-term website support and ongoing maintenance I focus on clean design, efficient code, SEO best practices, and clear communication to ensure every project is delivered on time and exceeds expectations. Whether you need a business website, high-converting landing page, SaaS platform, WordPress website, eCommerce store, AI-powered solution, or custom web application, I can help transform your ideas into a polished, scalable, and conversion-focused digital product. I take ownership of projects from concept to launch, ensuring responsive design, performance optimization, seamless functionality, and an exceptional user experience that supports your business growth. Lovable, Lovable.dev, Lovable developer, Lovable expert, Lovable MVP, Lovable app builder, Lovable bug fix, Replit, Replit developer, Replit agent, Bolt, Bolt.new, Bolt.new developer, Base44, Base44 developer, v0, v0.dev, Cursor, Cursor AI, vibe coding, vibe coder, AI MVP builder, AI app developer, AI-powered web apps, Supabase, Supabase integration, Supabase auth, full-stack AI apps, SaaS development, startup MVP, MVP development, no-code to production, rapid prototyping, AI prototyping, Stripe integration, API integration, React, Next.js, TypeScript, Tailwind CSS, responsive design, UI/UX design, web app development, mobile-first design, dashboard development, admin panel, user authentication, real-time database, edge functions, serverless, Vercel deployment, production-ready apps, scalable web apps, OpenAI integration, Claude integration, AI automation, workflow automation, custom web applications, client portals, SaaS platforms, fintech apps, healthcare apps, e-commerce apps, landing pages, conversion optimization, cross-browser compatibility, Figma to code, design to development, full-stack developer, AI engineer, prompt engineering, 𝗖𝗢𝗥𝗘 𝗦𝗘𝗥𝗩𝗜𝗖𝗘𝗦 ━━━━━━━━━━━━━━━━━━━━━━ ➤ Lovable.dev MVPs. End-to-end product builds: SaaS dashboards, two-sided marketplaces, internal tools, AI-powered applications, founder and client portals. Properly architected Supabase backends, secure auth, Stripe billing, real-time features. ➤ Claude Code Engineering. Production AI features built with the full harness in place: CLAUDE.md system prompts, MCP servers, sub-agent orchestration, token budgeting, structured outputs, and evals. The work senior teams need when they've moved past "look what the AI wrote" and into "why does this cost $4,000 a month and still hallucinate." ➤ MCP Server Development. Custom Model Context Protocol servers that connect Claude Code to your real infrastructure: repos, APIs, databases, internal tools, CRMs. Properly authenticated, scoped, and logged. ➤ AI App Rescue. Broken Lovable builds, unstable Replit deployments, runaway Claude API integrations, Supabase auth that locks users out. I diagnose, refactor, harden, and document.

You've got a product idea (or a half-built app from Lovable/Cursor that keeps breaking), and you need it live with real users, not another demo that dies in staging. I ship production SaaS in 2–4 weeks: auth, Stripe billing, the AI layer, all of it. Three of my last builds have paying users today. Here's the trap most founders hit: an AI tool spits out a slick prototype, but the moment a real user hits it, auth breaks, payments don't reconcile, and the data model falls apart. A demo isn't a product. I build the whole thing so it survives production — the unglamorous parts included. Auth, Stripe billing, the data model, the AI layer, and the error handling that keeps it up at 2am when someone's actually using it. Proof: RealTalk Referee is a live AI app with paying users — relationship analysis on the Claude API (React/Vite, Node/Express, Supabase, Stripe). Built end to end and [add: how many users / MRR / uptime]. Offscript, an AI coach for creators, was delivered, approved, and paid. Working with me: → Free 30-min scoping call before I quote anything → Fixed-milestone pricing — you know the cost up front, no open meter → A working demo every week, daily updates in your channel → Plain English — most of my clients aren't developers Tell me what you're building and I'll tell you straight what it'll take and the fastest clean path to ship it. Bidly — AI proposal generator, built solo end to end (Next.js, Convex, Claude API). Full auth + admin dashboard, live at bidly.space. RealTalk Referee — live AI product with PAYING users (Claude API, React/Vite, Node/Express, Supabase, Stripe). Offscript — AI communication coach for creators (Next.js, Supabase, Claude API). Delivered, client-approved, and paid. PerfectSchoolMatch — two-sided teacher–school marketplace, rebuilt from scratch in Next.js.

AI MVP Developer | Lovable, Base44, Supabase, Claude Code Expert Overview: I'm Samuel, a Full-Stack AI Developer and Tech Lead with a background in production-grade SaaS architecture. I help founders and agencies ship real products — whether that means building from scratch, rescuing a broken AI-generated codebase, or migrating a Base44 build into WordPress or Next.js with zero data loss. I also work fluently with international clients in English, French, German, and Portuguese — ideal for European and multilingual SaaS deployments. 🎯 What I Actually Do ✅ Build AI SaaS MVPs from scratch using Lovable, Base44, Replit & Claude Code ⚡ ✅ Fix broken AI-generated apps (the "last 20%" that determines launch) ✅ Migrate Base44 / Lovable projects into WordPress, Next.js, or custom infrastructure ✅ Architect Supabase backends (Postgres, RLS, Edge Functions, pgvector) ✅ Integrate Stripe, Binance Checkout, and TRC-20 payments on Tron network ✅ Build multi-agent AI workspaces with Claude, OpenAI & custom RAG pipelines ✅ Automate business workflows with n8n, Make, Zapier & webhooks ✅ Deploy scalable SaaS dashboards with authentication and complex logic 🛠️ My Stack AI Builders: Lovable, Base44, Replit, Claude Code, Cursor, GitHub Copilot ⚡ Frontend: React, Next.js, TypeScript, Tailwind CSS Backend: Supabase, PostgreSQL, Node.js, WordPress, AWS AI & LLM: Claude API, Claude Code, OpenAI, RAG pipelines, multi-agent systems ⚡ Automation: n8n, Make, Zapier, custom webhooks Payments & Web3: Stripe, Binance Checkout, Tron Network, TRC-20 smart contracts Integrations: HubSpot, REST APIs, GraphQL 🚀 Who I Work Best With ▪ Founders launching their first AI MVP who need it done right ▪ Startups stuck with a broken Lovable, Base44, Replit, or Claude Code build ⚡ ▪ SaaS companies scaling from prototype to production ▪ Agencies needing a reliable AI developer for overflow work ▪ Non-technical founders who want a partner, not just a coder If you want the cheapest developer, I'm not the right fit. If you want an app that works, scales without breaking, and doesn't need to be rebuilt in 6 months — let's talk. ❓ Common Client Questions Q: Can you fix a Lovable or Base44 app someone else broke? A: Yes. This is my specialty. I audit the codebase, identify where the AI logic breaks, stabilize the backend, and get it launch-ready. Q: How fast can you build an MVP from scratch? A: Most MVPs go live in 5 to 14 days depending on scope. I scope clearly upfront. Q: Can you migrate my Base44 or Lovable app to my own infrastructure? A: Yes. I execute zero-data-loss migrations to WordPress, Next.js, or custom cloud. Q: Do you work with Claude Code projects? ⚡ A: Yes. I build with Claude Code daily and can take over, debug, or extend any Claude Code-generated project. ⚡ Q: Do you build for non-technical founders? A: Most of my clients are founders — not developers. You bring the vision, I handle the tech. Q: Can you integrate payments (Stripe, Binance, crypto)? A: Yes. Stripe subscriptions, Binance Checkout, and full TRC-20 blockchain payments. Q: Do you offer support after delivery? A: Yes. I don't disappear after launch. Post-launch support included. 🤝 Why Founders Choose Me I don't just write code. I think in systems. That means I care about how your product handles real users, real data, and real growth — not just how it looks in a demo. My background as a Tech Lead means I see where things will break at scale, before they break. While tools like Lovable and Replit let anyone build fast, it takes a real architect to make those builds last. You get AI-native speed combined with senior full-stack precision. 📩 Let's Build Send me a message with what you're building, what stage you're at, and what's blocking you. I'll respond within a few hours with a clear plan, timeline, and next steps. Whether you're starting fresh, stuck on a broken build, or ready to migrate — let's ship something real. Keywords: Lovable, Lovable.dev, Lovable developer, Lovable expert, Lovable MVP, Lovable bug fix, Lovable rescue, Base44, Base44 developer, Base44 to WordPress, Replit, Replit developer, Claude Code, Claude Code developer, Claude Code expert, Claude AI, Anthropic Claude, Claude API, Claude Code MCP, AI-assisted development, Supabase, Supabase expert, Supabase Auth, AI MVP developer, AI SaaS developer, vibe coding, Full-Stack AI Developer, Next.js, React, TypeScript, Node.js, PostgreSQL, WordPress migration, OpenAI, RAG pipeline, multi-agent AI, Stripe, Binance Checkout, Tron, TRC-20, Web3, n8n, Make, Zapier, SaaS MVP, MVP development, AI code rescue, broken AI app fix, French developer, German developer, Portuguese developer, multilingual, European SaaS. ⚡

If you are building an AI app, SaaS product, or automation system that actually needs to work for real users, not just look good in a demo, you are in the right place Most AI products don’t fail because of bad ideas They fail because they are built fast without proper structure, and everything breaks when users start using it That is where I come in I help founders and businesses build AI powered MVPs and SaaS products that are stable, scalable, and ready for real world usage from day one I am not just a developer I design and build complete systems From frontend experience to backend architecture to AI logic and automation, everything is built to work together without breaking What I can help you build AI SaaS applications using Lovable, Replit, Base44 and Supabase MVPs for startups that need to launch fast without sacrificing quality AI powered features using OpenAI and Claude Automation systems using n8n, Make, APIs and webhooks Dashboards, internal tools and business systems Full stack web applications built for performance and scalability What makes me different I do not just “build features” I think in systems That means I focus on how your product will handle real users, real data, and real growth No patchwork builds No disconnected tools No systems that need to be rebuilt later Everything is structured properly from the beginning so you can scale without problems Who I work best with Startup founders building AI products SaaS businesses that need MVP development or system fixes Business owners looking to automate operations with AI Clients who want long term solutions, not quick fixes If you are looking for the cheapest option, I am not the right fit If you want a product that works, scales, and does not break when users come in, then we should talk QUESTIONS CLIENTS ASK Q: How fast can you build a Lovable app from scratch? A: Most builds go live in 3 to 7 days depending on scope. I scope clearly before we start. Q: Can you fix or extend a Lovable app someone else built? A: Yes. I take over existing Lovable builds, fix broken functionality, and add new features. Q: Do you connect Lovable to Shopify and Stripe? A: Yes. Lovable handles the frontend, Shopify handles products and checkout, Stripe handles payments through Shopify. Q: Can you build an admin dashboard inside the Lovable app? A: Yes. I build custom admin panels so you can manage your app without touching code. Q: What if I only have an idea and nothing built yet? A: That is the best starting point. Tell me what you want to build and I will scope it and give you a clear plan. Q: Do you work with clients who have no technical background? A: Yes. Most of my clients are founders and business owners, not developers. You bring the idea, I handle everything technical. Q: Can you build a SaaS product with user login and subscriptions? A: Yes. I build full authentication systems and connect Stripe subscriptions inside Lovable apps using Supabase. Q: What happens if something breaks after delivery? A: I do not disappear after delivery. I offer support and can fix issues that come up after launch. Q: Can you build a multi-page app, not just a landing page? A: Yes. I build full multi-page web applications with navigation, dashboards, user roles, and database logic. Q: Do you use Lovable, Bolt, or Replit? Which one is best for my project? A: I use all three depending on the project. I will recommend the right tool after understanding what you need. Q: Can you integrate third-party tools like calendars, CRMs, or email systems? A: Yes. I connect apps using APIs, webhooks, n8n, and Make to automate workflows inside your product. Q: How do you handle projects that grow or change scope? A: I work in phases. Each phase has a clear scope so changes are handled cleanly without breaking what is already built. Q: Do you sign NDAs or work under confidentiality agreements? A: Yes. I am open to NDAs for any project that requires confidentiality. Q: Can you build a mobile-friendly version of the app? A: Yes. Every Lovable app I build is fully responsive and works on both desktop and mobile without a separate build. Q: What is the difference between what you do and hiring a traditional developer? A: I deliver in days using AI-powered vibe coding tools. A traditional developer would take weeks for the same scope. Same quality, significantly faster. Send me a message with what you are building and I will break down the best structure and next steps for you

I'm a Full Stack AI Developer who takes apps started in Lovable, Replit, Bolt, v0 or Base44 and ships them as production-ready SaaS, real auth, real payments, real databases, real users. Here's the pattern I see every week: you prompt Lovable or Base44, get a beautiful UI in an afternoon, then hit the wall. Supabase RLS policies are misconfigured, auth breaks on edge cases, data stops persisting, Stripe never quite connects, and the AI features that demoed well fall apart under real usage. AI builders get you 80% of the way. I'm the developer who finishes the 20% that decides whether you actually launch. I know this gap from both sides. I run my own live SaaS, an AI-powered proposal generator built on Next.js, TypeScript, Convex, Clerk, and the Claude API, with paying subscribers today. I've debugged the auth flows, hardened the payment webhooks, and shipped the AI pipeline myself. When I fix your app, I'm applying lessons from products I own, not theory. What I do: • Prototype → production: audit, stabilize, and harden apps built in Lovable, Bolt, v0, Base44 or Replit • Full-stack SaaS MVPs from zero, auth, payments, dashboards, multi-role apps • AI features that hold up: Claude & OpenAI integrations, agents, RAG, automated workflows • Supabase specialist work: RLS policies, Postgres schema design, edge functions, realtime • Internal tools and client portals that replace spreadsheets and manual work Stack: Next.js · React · TypeScript · Supabase (auth, Postgres, RLS, edge functions) · Tailwind CSS · Claude API · OpenAI · Stripe · Clerk · Vercel · Cursor How I work: clear scope up front, milestone-based delivery, updates you don't have to chase. You get working software in weeks and clean code you actually own, no lock-in, no mystery architecture. Message me with where your app is stuck (or what you want to build), and I'll reply with exactly how I'd get it live.