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Most startups, founders, and growing businesses already know what they want to build. The challenge is finding a Senior Full Stack Developer who can take ownership of the product, from architecture and MVP planning to frontend development, backend infrastructure, API integration, cloud deployment, automation, and long-term scalability. I help startups, SaaS companies, agencies, and established businesses build modern web applications, SaaS platforms, AI-powered products, CRM systems, business software, marketplaces, customer portals, booking platforms, admin dashboards, automation platforms, Chrome extensions, and mobile applications using production-ready technologies. My primary expertise includes React.js, Next.js, TypeScript, JavaScript, Node.js, Express.js, NestJS, PostgreSQL, MongoDB, Supabase, Firebase, AWS, Docker, Vercel, Tailwind CSS, Stripe, REST APIs, AI Integration, Workflow Automation, and Cloud Infrastructure. As a Full Stack Developer, React Developer, Next.js Developer, Node.js Developer, SaaS Developer, Backend Engineer, API Integration Developer, and AI Developer, I build scalable applications that combine exceptional user experiences with secure backend systems and reliable infrastructure. Whether you need to build an MVP, modernize an existing application, automate business workflows, integrate AI into your product, or scale an enterprise platform, I can help transform your vision into production-ready software. What I Build ✔ SaaS Platforms & Multi-Tenant Applications ✔ Startup MVP Development ✔ AI Applications & AI Integration ✔ AI Chatbots & AI-Powered Business Tools ✔ CRM Systems & ERP Solutions ✔ Business Software & Internal Platforms ✔ Customer Portals & Admin Dashboards ✔ Marketplace Platforms & B2B Marketplaces ✔ Booking & Reservation Systems ✔ Financial Platforms & FinTech Applications ✔ Healthcare & Telehealth Platforms ✔ Real Estate Platforms ✔ Mobile Applications (React Native & Flutter) ✔ Chrome Extensions & Browser Extensions ✔ Web Automation & Workflow Automation ✔ API Integration & Third-Party Integrations ✔ Payment Systems (Stripe, PayPal, Webhooks) ✔ Cloud Deployment & DevOps Core Technical Expertise Frontend Development React.js • Next.js • TypeScript • JavaScript • HTML5 • CSS3 • Tailwind CSS • Redux • React Query • Responsive UI Development • Front-End Development Backend Development Node.js • Express.js • NestJS • REST API Development • API Architecture • Authentication • Authorization • JWT • OAuth • Backend Infrastructure • Serverless Functions Database Development PostgreSQL • MongoDB • Supabase • Firebase • MySQL • Database Design • Database Optimization AI Development & Automation AI Development • AI Integration • OpenAI API • Claude API • AI Applications • AI Platform Development • AI Chatbots • Workflow Automation • Business Process Automation • AI-Powered SaaS Cloud & DevOps AWS • Docker • Vercel • Cloudflare • CI/CD • GitHub Actions • Deployment • Cloud Infrastructure • Performance Optimization Payments & Integrations Stripe Integration • PayPal • Third-Party APIs • REST APIs • Webhooks • API Integration Industries I've Worked With SaaS • FinTech • Healthcare • Telehealth • E-commerce • Education • Manufacturing • Real Estate • CRM • ERP • Recruitment • Marketplace Platforms • Booking Systems • Marketing Platforms • Business Automation Why Clients Hire Me I don't just build features, I help build products that are scalable, secure, maintainable, and ready for growth. Clients value working with me because I provide: • Clean, production-ready code • Scalable software architecture • Strong frontend and backend engineering • Reliable API integration • Secure authentication and authorization • Optimized PostgreSQL and MongoDB database design • AI integration and automation expertise • Cloud deployment and infrastructure support • Clear communication and transparent progress updates • Long-term technical partnership Whether you already have Figma designs, an existing codebase, or just an idea on paper, I can help you build a modern web application, SaaS platform, CRM, AI product, automation system, marketplace, Chrome extension, or mobile application from concept to production. If you're looking for a Senior Full Stack Developer, React Developer, Next.js Developer, Node.js Developer, Backend Engineer, SaaS Developer, AI Developer, API Integration Developer, CRM Developer, Automation Engineer, or long-term technical partner, I'd be happy to discuss your project and recommend the best technical approach.

𝐒𝐭𝐨𝐩 𝐰𝐚𝐬𝐭𝐢𝐧𝐠 𝐦𝐨𝐧𝐭𝐡𝐬 𝐨𝐧 𝐓𝐫𝐚𝐝𝐢𝐭𝐢𝐨𝐧𝐚𝐥 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐨𝐫 𝐬𝐞𝐭𝐭𝐥𝐢𝐧𝐠 𝐟𝐨𝐫 𝐁𝐫𝐨𝐤𝐞𝐧 𝐀𝐈 𝐂𝐨𝐝𝐞. WHAT'S THE BIGGEST RISK TODAY? It's the AI Prototype Trap: apps that look great in a demo but crash when real users sign up. Most devs move too slow, or move too fast with AI and leave a buggy mess. I bridge that gap. I use AI-Native Development (Vibe Coding) to ship investor-ready MVPs in days. With Lovable, Replit, and Base44, I don't just prompt apps, I engineer them to scale. This is real AI App Development, not throwaway demos. What I Deliver: 1. Rapid MVPs: Go from idea to a live, working product in less than 10 days. 2. Full-Stack Development: React and Next.js frontends, Node.js and Supabase backends, Postgres architecture underneath. 3. AI Integration: Custom LLM workflows (OpenAI and Claude), autonomous agents, and clean API integration with the tools your product relies on. 4. Logic & Scale: Solid systems built on Base44, with secure Stripe and auth setups. Why Founders Hire Me: 1. Vibe Coding + Discipline: Fast delivery via Replit Agents, without the technical debt. 2. Product-First Mindset: I focus on your business outcome, not just the code. 3. Direct Impact: No agency lag. You work directly with an AI-native specialist who owns the full build, from JavaScript frontend to database. Ready to move from idea to working product this week? Let's build. Keywords: Full-Stack Development, AI App Development, Web Development, Replit, Supabase, Claude, API Integration, Node.js, React, JavaScript, TypeScript, Next.js, Tailwind CSS, PostgreSQL, Vercel, Lovable, Lovable.dev, Lovable Developer, Lovable Expert, Lovable MVP, Base44, Bolt, Bolt.new, Cursor, Claude Code, Replit Developer, Replit Agent, Vibe Coding, AI-Native Development, MVP Development, Rapid MVP Development, Startup MVP, Investor-Ready MVP, Production-Ready MVP, AI MVP, SaaS Development, SaaS MVP, SaaS Dashboard, Multi-Tenant SaaS, Multi-Tenancy, Custom Web Application, Web App Development, Web App for Startups, B2B Web Application, Idea to MVP, MVP to Production, Prototype to Production, Rapid Prototyping, AI Integration, AI Web App, AI SaaS, AI-Powered App, AI Agents, Generative AI, Custom LLM Integration, OpenAI, LLM Integration, AI Automation, AI Chatbot, AI Dashboard, RESTful API Development, REST API, Webhook Integration, Third-Party API Integration, Supabase Auth, Row-Level Security, Supabase Edge Functions, Database Design, Stripe Integration, Payment Integration, Subscription Billing, User Authentication, Real-Time Applications, HIPAA Compliance, SOC2, GDPR Compliance, Deployment, Web App Deployment, App Deployment, Vercel Deployment, Bug Fix, App Debugging, Fix AI-Built App, Lovable Bug Fix, Deployment Error Fix, Web App Rescue, Full Stack Developer, React Developer, Node.js Developer, Landing Page Development, Internal Tools, Minimum Viable Product, Product Development

🏆 Top Rated Freelancer on Upwork ⭐ 100% Job Success Score 💼 19+ Successfully Completed Projects 💰 $3K+ Earned on Upwork ⚡ 0–4 Hour Average Response Time 🌍 Available for Long-Term & Short-Term Projects 🚀 Full Stack Developer | React.js, Next.js, Node.js | SaaS, Web Apps & Conversion-Focused Websites Need a modern web application, SaaS platform, ecommerce website, or high-converting landing page that actually helps your business grow? I help startups, entrepreneurs, agencies, and growing businesses build fast, scalable, and user-focused digital products using modern technologies like React.js, Next.js, Node.js, TypeScript, and MongoDB. My goal is simple: ✅ Build products users love ✅ Improve business efficiency ✅ Generate more leads and conversions ✅ Create scalable systems that grow with your business Unlike developers who only focus on code, I combine development expertise with design and branding experience to create digital experiences that are visually appealing, technically strong, and conversion-focused. 💻 Core Services ✔ Full Stack Web Development ✔ React.js Development ✔ Next.js Development ✔ Node.js Development ✔ SaaS Application Development ✔ Custom Web Applications ✔ Ecommerce Website Development ✔ Shopify Development ✔ Landing Page Design & Development ✔ Website Redesign & Modernization ✔ API Development & Integration ✔ Payment Gateway Integration ✔ Website Performance Optimization ✔ Website Speed Optimization ✔ Bug Fixing & Troubleshooting ✔ Responsive Web Design ✔ Frontend & Backend Development 🎨 Creative & Branding Support ✔ UI/UX Design ✔ Graphic Design ✔ Brand Identity Design ✔ Logo Design ✔ Presentation Design ✔ Pitch Deck Design ✔ Marketing Graphics ✔ Motion Graphics 🛠 Technologies & Tools Frontend: React.js, Next.js, JavaScript, TypeScript, HTML5, CSS3, Tailwind CSS, Bootstrap Backend: Node.js, Express.js, PHP Database: MongoDB, Supabase Tools: Git, GitHub, VS Code, REST APIs Payment Integrations: Stripe, PayPal, Paystack, Flutterwave ⚡ My Process 1. Understand your goals and requirements 2. Design user-focused solutions 3. Build scalable and maintainable systems 4. Test performance and usability 5. Launch and provide ongoing support 🎯 Why Clients Work With Me • Clear communication • Reliable project delivery • Performance-focused development • Modern, scalable architecture • Strong attention to detail • Business-focused solutions, not just code Whether you need a custom web application, SaaS platform, ecommerce store, business website, landing page, Shopify solution, API integration, or website optimization, I can help bring your vision to life. Keywords & Expertise: Full Stack Developer • React Developer • Next.js Developer • Node.js Developer • JavaScript Developer • TypeScript Developer • Frontend Developer • Backend Developer • Web Application Developer • SaaS Developer • Ecommerce Developer • Shopify Developer • Website Developer • API Integration Specialist • Landing Page Developer • Website Optimization Expert • Performance Optimization • Responsive Web Design • WooCommerce Developer • Payment Gateway Integration • Stripe Integration • PayPal Integration • MongoDB Developer • Custom Website Development • UI/UX Design • Brand Identity Design

Most backend projects stall because of poorly designed APIs, slow database queries, or integrations that keep breaking. I fix and build exactly that — using Node.js, Express, NestJS, and Java, with enough React experience to make sure what I build actually works end-to-end. Why hire me? ⭐Deep Backend Expertise: I specialize in server-side logic, database design (SQL & NoSQL), and RESTful/GraphQL API development. ⭐ Performance Obsessed: At Scandiweb, I didn't just build features; I optimized performance, reducing load times by 35% and directly impacting conversion rates. I understand how backend latency kills user experience. ⭐ Frontend-Aware Architecture: Because I have experience with React and Next.js, I build APIs that are developer-friendly, well-documented, and easy for your frontend team to consume. ⭐ Reliability: I use TypeScript and Jest to ensure type safety and test coverage, meaning fewer bugs in production and easier scaling. Technical Stack: Languages: TypeScript, JavaScript (ES6+), Node.js. Frameworks: NestJS, Express.js. SpringBoot Databases: MongoDB, PostgreSQL, MySQL. Tools & DevOps: Docker, Git, Jest (Testing), Webpack. Integrations: Stripe (Payments), JWT/OAuth (Security), REST APIs, GraphQL. Backend: - Node.js, Express.js, Nest.js, Java, SpringBoot - MongoDB, PostgreSQL, MySQL - REST APIs, GraphQL - JWT, OAuth authentication - Stripe, PayPal payments, Paystack - Docker containerization, CI/CD Frontend: - React.js, Next.js, Tanstack Start - TypeScript, JavaScript (ES6+) - TailwindCSS, SCSS, Chakra UI - Redux, React Query (TanStack Query), Zustand - Responsive design, mobile-first approach Tools & Testing: - Git/GitHub, Vite, Webpack - Jest testing - Figma/XD to code conversion 💼Key Projects: - Chowmart (Food Delivery API): Architected a scalable backend with MongoDB and Express. Implemented complex order management logic and secure Stripe payment integration. - Chillax (Booking System): Built a secure booking platform using JWT authentication and RESTful APIs, optimized for high concurrency. I communicate clearly, hit deadlines, and prefer "boring," reliable code over over-engineered complexity. If you need a backend developer who can hit the ground running and deliver production-ready APIs, let's talk.

If you have a React and Node.js MERN web application that needs bug fixes or new features, I can help, especially if it is already live and you do not want anything breaking in production. I am a Full Stack Developer focused on MERN Web Development, building and fixing Web Applications with React, Node.js, ExpressJS, MongoDB, JavaScript, and TypeScript, plus MySQL and PostgreSQL. I work inside existing codebases, ship clean commits, and keep releases predictable for SaaS web applications, dashboards, and admin panels. Clients usually come in with the same problems. A small fix turns into a bigger issue, bugs keep returning, the app feels slow, API calls take forever, and database queries get messy in MongoDB, MySQL, or PostgreSQL. Stripe may work for simple payments but fails on real edge cases. You need changes that are safe, clean, and stable. I take tasks from UI to API to database. I build and update React dashboards with tables, filters, and forms. I improve Node.js and Express backend services, design and extend REST APIs, and handle API integration with payments, email, analytics, and notifications. I also set up authentication and authorization using JWT and RBAC, optimize performance across React rendering, API latency, and database queries, and refactor without breaking production. What I can do for you ✔ MERN feature work and bug fixes using React, Node.js, ExpressJS, MongoDB, JavaScript, and TypeScript ✔ REST API development and API integration with third party services ✔ Database design and query optimization in MongoDB, MySQL, and PostgreSQL ✔ Authentication and authorization using JWT and RBAC, plus performance fixes ✔ Stripe payments and subscriptions with webhook logic ✔ Refactoring and code cleanup to keep production behavior stable ✔ Testing and QA support, Git workflow, and deployment help using Vercel or Docker Message me now with your repo and task list, or invite me to your job today, and I will reply with a clear plan and the quickest path to ship safely.

I help businesses build fast, scalable, and reliable backend systems that power real-world applications. With a strong focus on API development, database design, and system architecture, I’ve delivered backend solutions for projects like: 🔧 Booking & scheduling systems 📦 E-commerce & inventory platforms ⚙️ Admin dashboards & RESTful/GraphQL APIs 🔐 Authentication & role-based access systems I write clean, testable code and prioritize performance, security, and maintainability. I also bring additional skills in WordPress (custom plugins/themes) and FlutterFlow for rapid MVPs. ✅ Clear communication ✅ On-time delivery ✅ Scalable results I am open to both short-term and long-term projects. Let’s build something great together. Invite me to your job post and let’s get started! Cheers, Peace F.