100% Results Guaranteed: If my work doesn't meet or surpass your expectations, you get every penny back — no excuses. Are you looking for a reliable, top-rated developer who doesn't just write code — but helps you build AI-powered systems that actually run your business? I am Nofal, a seasoned full-stack and AI developer with a 100% Job Success Rate and 8+ years of experience. I've completed 50+ projects on Upwork, generating $200K+ in revenue — helping businesses build great software and, increasingly, helping them adapt AI to transform how they operate. ⭐ CLIENT TESTIMONIALS "Nofal's communication was better than any other contractor I've worked with. He delivered ahead of schedule, even accommodating multiple changes mid-development. The application works flawlessly for our team." — Upwork Client "Nofal and Mergestack are top-level talent in the developer space. They took the time to fully understand both our organization and the project, as well as its intended goals. Their communication practices are excellent. Highly recommend." — Upwork Client 🤝 Most business owners I work with come to me with one of these challenges: ▸ You have sensitive data you can't hand to OpenAI, Anthropic, or any third party and need to build, fine-tune and deploy LLMs on custom in-house GPU infrastructure so your data never leave your walls ▸ You need an LLM trained on your specific domain and need help generating synthetic data. ▸ You want to implement AI in your company but don't know where to start ▸ You're evaluating AI tools and need someone to cut through the noise and build what actually fits your business ▸ You want to automate repetitive work across operations, sales, HR, finance, or support — and free your team to do higher-value work ▸ You've tried off-the-shelf AI tools but they don't fit your workflows — you need something custom ▸ You want a technical partner who understands both the technology AND your business goals ▸ You're ready to go AI-first and want a roadmap, not just a prototype 🤖 AI AGENTS & AUTOMATION — WHAT I BUILD I design and deploy production-grade AI agents and multi-agent systems across a range of platforms: ▸ Claude Cowork ▸ Openclaw ▸ LangChain / LangGraph — Stateful, multi-step agent workflows with memory, tool use, and human-in-the-loop execution ▸ CrewAI — Role-specialized agent teams for research, operations, and autonomous decision-making ▸ n8n — Visual workflow automation with 400+ integrations, self-hosted or cloud, with AI nodes ▸ AutoGen (Microsoft) — Multi-agent collaboration for enterprise IT and compliance automation ▸ AWS Bedrock Agents — RAG-powered agentic systems for AWS-native organizations ▸ Vertex AI / Google AgentSpace — Gemini-powered agents integrated with Google Workspace and GCP ▸ Zapier & Make — Business process automation for non-technical teams and rapid deployment I connect agents to real data sources — Slack, email, CRMs, databases, APIs — so they don't just answer questions but take action. CUSTOM LLM TRAINING & DEPLOYMENT — WHAT I BUILD ▸ Building high-quality synthetic datasets from scratch when real training data is scarce, sensitive, or unbalanced — covering edge cases public models miss ▸ Fine-tuning open-source models (Llama, Mistral, Qwen, DeepSeek) on your proprietary data so they speak your industry's language, not generic internet English ▸ Setting up and deploying LLMs on custom in-house GPU infrastructure (NVIDIA H100, A100, RTX workstations) for organizations in healthcare, legal, finance, and defense where data sovereignty is non-negotiable ▸ Building retrieval-augmented generation (RAG) pipelines that run fully air-gapped, so your documents, contracts, and IP never touch a third-party API ▸ Shrinking large models with quantization (GGUF, AWQ, GPTQ) and inference optimization (vLLM, TensorRT-LLM, llama.cpp) to run efficiently on your available hardware ▸ Fine-tuning Whisper and similar models for domain-specific transcription (multilingual, technical vocabulary, low-resource languages) with word-level timestamps and downstream LLM refinement ▸ Building continuous feedback loops so your model gets smarter over time from real usage, not just the initial training run. 🛠 TECH STACK Frontend: React, Next.js, TypeScript, Tailwind CSS Backend: Node.js, Python, Django Cloud: AWS (Lambda, EC2, S3), GCP Databases: MongoDB, PostgreSQL, MySQL AI/LLM: OpenAI, Anthropic Claude, Gemini, LangChain, LangGraph, CrewAI, AutoGen Automation: n8n, Zapier, Make, AgentKit DevOps: Docker, CI/CD, cloud hosting 💼 WHY CHOOSE ME ✔ Successfully delivered projects backed by Google, Mastercard, and Techstars ✔ Top-Rated on Upwork — 100% Job Success Score, 0 negative reviews ✔ I build agents that run in production, not demos that break in the real world ✔ Clear communication at every stage — no surprises, no ghosting Ready to build AI agents that actually work? Let's talk.

Top Rated Plus Node.js backend engineer. 25 SaaS products built, 7,600+ hours, JSS 100%. REST APIs + AWS + HIPAA-compliant healthcare apps. 🎯 WHAT I BUILD • Node.js + Express / NestJS REST APIs at scale • HIPAA-compliant healthcare backends with audit trails + encrypted storage • PostgreSQL + MongoDB database architectures • AWS-deployed apps (EC2, Lambda, RDS, S3, CloudFront) • Microservice architectures with proper separation of concerns • TypeScript-first backend codebases • Stripe / PayPal subscription + payment integrations • OAuth, JWT, role-based access control • GraphQL APIs for React + mobile clients • Background job processing (Bull, BullMQ, AWS SQS) 🛠 STACK Node.js • TypeScript • Express • NestJS • PostgreSQL • MongoDB • AWS • Docker • Redis • GraphQL • Stripe • HIPAA patterns 🏆 WHERE I'M STRONGEST Healthcare SaaS (HIPAA) • B2B SaaS backends • Subscription billing • High-throughput REST APIs • Legacy → modern Node migrations 💼 WHY WORK WITH ME ✓ Top Rated Plus, JSS 100% (rare) ✓ 25 products shipped, 7,600+ hours ✓ HIPAA + healthcare experience most freelancers can't credibly claim ✓ Doesn't disappear after launch 📞 LET'S TALK Send the product brief + load profile + compliance bar. Within 24 hrs: architecture + plan + fixed quote.

I'm a full stack developer specializing in React, Node.js, and TypeScript. I build production web applications that handle payments, user data, complex workflows, fintech platforms, admin dashboards, SaaS products, and AI-powered automation tools. As a full stack developer, I've shipped 20+ production applications for clients across the UK, Australia, South Korea, Hong Kong, Netherlands, and Zambia. My full stack development work includes Stripe payment systems processing automated payouts, admin panels managing thousands of users across multiple roles, real-time dashboards with WebSocket data feeds, mobile money integrations for African markets (MTN, Airtel, Zamtel), and AI features using OpenAI and Claude APIs. Most of my full stack developer projects involve taking a business idea or existing codebase and turning it into something that works at scale. I handle both frontend and backend development, building the user interface, designing the API architecture, setting up the database, and deploying to production. Clean architecture, documented code, and systems that don't break when you scale. What I work with most: Frontend: React, Next.js, TypeScript, Tailwind CSS, Zustand, Framer Motion Backend: Node.js, Express, Supabase Edge Functions, REST APIs, WebSockets Databases: PostgreSQL (Prisma), MySQL, MongoDB, Redis Payments: Stripe (Connect, Webhooks, PaymentIntents, Subscriptions), Mobile Money (MTN, Airtel, Zamtel) AI Integration: OpenAI GPT-4o, Anthropic Claude API, custom automation workflows Cloud & Deployment: AWS, Netlify, Railway, Vercel, DigitalOcean Industries I've worked in: As a full stack developer, I've built applications across fintech, healthcare, education, transportation, SaaS, e-commerce, and marketing automation. How I work: I handle projects end-to-end from architecture decisions to deployment. I work solo on most builds, but I also co-founded Fluxium Agency, which means if your project needs to accelerate or something unexpected comes up, I can bring in additional developers without missing a beat. You always deal with me directly no middlemen, no handoffs. If your project involves building a web application, integrating payments, setting up admin dashboards, or connecting APIs send me a message. I'll be honest about whether I'm the right fit.

I am a skilled full-stack developer with a strong background in building scalable web and mobile applications using React.js, React Native, and Node.js. With a focus on delivering high-quality solutions, I specialize in front-end development, creating intuitive UIs and seamless user experiences. My recent experience includes preparing for senior-level roles and working on challenging React-based projects to enhance my expertise. Key Skills: • Front-end: React.js, React Native, Redux, Redux Toolkit, JavaScript (ES6+), Hooks, Component Lifecycles • Back-end: Node.js, Express.js, Django (Python), Java (Spring Boot) • Databases: MySQL, PostgreSQL, MongoDB • State Management: Redux, Context API • API Development: RESTful APIs, GraphQL • Version Control: Git, GitHub • Deployment: Docker, AWS, CI/CD I am currently expanding my skill set by learning Java (Spring Boot) to broaden my backend expertise and stay competitive in enterprise-level development. Additionally, I’m exploring LLM (Large Language Models) technologies to stay ahead in AI-driven application development. My work ethic revolves around continuous learning, problem-solving, and delivering efficient solutions tailored to client needs. Whether you’re looking for a developer to build your next web app or need assistance in modernizing your existing codebase, I’m here to help. Let’s connect and discuss how I can contribute to your project success!

🚀 I’m Bogdan, a Python developer with strong experience building backend systems, web applications, automation tools, APIs, integrations, and data-driven solutions for startups, product companies, and growing businesses. As a Python developer, I help clients create reliable software, improve existing systems, automate manual processes, and build scalable products that support real business needs. 💡 My main stack includes Python, Django, Flask, FastAPI, REST API, PostgreSQL, MySQL, MongoDB, Redis, Docker, Celery, Git, AWS, and modern backend development workflows. As a Python developer, I can build clean backend architecture, develop secure APIs, connect databases, integrate third-party services, and create features that are easy to maintain and scale. 🧩 My skills: • Golang • Python • Django • Web Application • SQL • PostgreSQL • MongoDB • ChatGPT • HTML5 • PHP • jQuery • RESTful API • API • WordPress • Vue.js • CSS • JavaScript • React • API Development ⚙️ I have experience as a Python developer working on SaaS platforms, admin panels, dashboards, CRM systems, automation scripts, booking systems, eCommerce solutions, internal tools, and custom web applications. My work as a Python developer includes backend logic, database design, API development, authentication systems, payment integrations, performance optimization, bug fixing, and long-term technical support. 🔧 As a Python developer, I focus on writing clean, readable, and maintainable code. I understand that good software should not only work today but also be easy to extend in the future. A Python developer should be able to think about performance, security, scalability, and product goals at the same time, and this is the approach I bring to every project. 🚀 I can work as a Python developer on new product development, MVP builds, backend refactoring, API integrations, automation tasks, data processing, web scraping, database improvements, and cloud deployment. I also have experience with background tasks, scheduled jobs, file processing, email systems, reporting tools, and business workflow automation. 📈 Clients hire me as a Python developer when they need someone reliable who can understand requirements, suggest practical solutions, and deliver solid technical results. I can join an existing team, take ownership of backend features, support scaling efforts, or help stabilize and improve an existing project. 🛠️ My services as a Python developer include Django development, Flask development, FastAPI development, REST API development, database design, backend architecture, automation scripts, web scraping, third-party API integration, bug fixing, performance optimization, Docker setup, deployment support, and ongoing maintenance. 🤝 Beyond coding, I contribute as a Python developer who understands communication, planning, and product delivery. I have experience with Git workflows, code reviews, task estimation, debugging, technical documentation, and working with both technical and non-technical clients. In some projects, I work only as a Python developer. In others, I also help with architecture decisions, backend planning, and improving development workflows. 🔍 As a Python developer, I value clear communication, attention to detail, and practical problem-solving. I always try to understand the business goal behind each task, not just the technical requirement. This helps me build solutions that are useful, stable, and aligned with the client’s needs. 🎯 If you need a Python developer who can build, improve, automate, and support modern software products, I’m ready to help. Whether you need a Python developer for a new backend system, API development, automation, bug fixing, database work, or long-term product support, I can provide reliable technical execution and a responsible approach to your project. Best regards, Bogdan

Dynamic WEB Development Expert with Over a Decade of Experience 🚀 Proficiency & Specializations: With 12+ years of industry experience, I specialize in delivering scalable, highly reliable web and mobile applications. For instance, I've delivered projects from a video streaming platform with auto-scaling capabilities to a restaurant ordering and check-out solution, which has grown from 0 to 5000 venues with more than 50000 unique users per day (over 2 million monthly). My expertise extends to web, PWA, and mobile app development within the FoodTech, HoReCa, Food & Beverage, and Retail industries. 📈Products I can help you build and succeed: - Custom Point of Sale development | POS terminals: I’ve built several feature-rich reliable, scalable, and successful POS systems for HoReCa and Retail industries: – Complex Workflows: Streamlined HORECA operations like table reservations and kitchen coordination for faster service and fewer errors. – Inventory Management: Built real-time stock tracking with automated alerts to minimize overstocking and stockouts. – Scalability: Designed cloud-based systems for multi-location businesses, ensuring centralized control and consistency. – Third-Party Integrations: Integrated payment gateways, accounting tools, and loyalty programs for seamless operations. – User Adoption: Created intuitive interfaces and provided training for smooth transitions. - Сustom-made KDS with support of various POS systems, with main functionality: – Large-Screen Compatibility: Optimized for visibility on large monitors. – POS Integration: Full integration with the client’s existing pos system, ensuring real-time data flow. – Remote Order Management: Order processing through a keyboard interface. – Expo Mode: For waitstaff to track order readiness. – Android Compatibility: Built exclusively for cost-effective android devices. – Unique Access Control: A back-office licensing system ensures exclusive, secure access for authorized users. - Self-service Kiosk systems for quick-service restaurants: – Order Customization: Designed intuitive interfaces to handle complex order modifications (e.g., toppings, modifiers, dietary preferences) while keeping the process simple for customers. – Integration with Kitchen Systems: Connected kiosks to Kitchen Display Systems (KDS) and POS systems, ensuring accurate and real-time order flow to the kitchen. – Accessibility and Usability: Built kiosks with multi-language support to cater to diverse customer needs. – Maintenance and Reliability: Developed robust systems with remote monitoring and troubleshooting capabilities to minimize downtime and ensure smooth operations. - Custom online ordering systems for restaurants and food businesses: – Complex Menu Management: Designed systems to handle intricate menus with customizable options (e.g., toppings, sizes, dietary preferences, product modifiers, allergens, etc) while ensuring a smooth ordering process. – Integration with POS and Kitchen Systems: Connected online orders to POS and Kitchen Display Systems (KDS) for real-time order processing and accuracy. – High Traffic Handling: Built scalable platforms capable of managing peak order volumes during busy hours without performance issues: from 0 to 2 million unique users monthly. – Payment and Security: Integrated secure payment gateways and implemented robust data encryption to protect customer information and build trust. – Delivery and Pickup Coordination: Added features for real-time order tracking, delivery scheduling, and pickup notifications to improve customer satisfaction. – Promotions and Loyalty Programs: Incorporated features for dynamic discounts, upselling, and loyalty rewards to boost customer engagement and repeat orders. 💡 Technical Toolbox: - Web & Software Architecture: Expert in crafting robust SaaS Applications. - Python Mastery: Proficient with Fast API | FastAPI | Flask | Django | Django REST Framework | Celery and Django Tenants - Cloud Solutions: Skilled in AWS ( EC2 | RDS | S3 | CloudFront | Lambda ), DigitalOcean and Ubuntu Server / VPS setup. - Database & Server Management: Competent in Nginx | MySQL | PostgreSQL | MongoDB - Automation & CI/CD: Experienced in Bitbucket pipelines and GitHub actions - Modern Tools: Proficient in Git, Docker, Docker-compose - Payment Integration: Skilled in integrating systems like Stripe | Checkout com | Moyasar | Apple Pay 🌐 Front-end: - Javascript & Frameworks: Adept in JS , Vue.js , Vuex , React , React Toolkit (RTK) Redux. - Web Design: Proficient in HTML, CSS ( SASS | SCSS ), templating, Bootstrap , Bootstrap5 🌟 Personal Traits: - Innovative Thinker: Always eager to explore new ideas and concepts. - Continuous Learner: Committed to staying updated with the latest technologies. - Independent & Team Player: Capable of thriving both as a self-starter and in collaborative environments.

I’m Waqar, a senior full-stack engineer who lives and breathes Node.js, Python, and React. Over 12 years I’ve shipped 70+ production apps and logged 3.8k Upwork hours, helping startups and enterprises launch fast, scalable products. Backend APIs & Microservices — Express/NestJS (Node) and FastAPI/Flask (Python) with PostgreSQL, MongoDB, Redis. Frontend — Modern React.js & Next.js UIs that load fast and feel smooth on every device. AI Integrations — GPT-4 chatbots, LLM workflows, and ML pipelines that add real intelligence. Cloud & DevOps — Docker, CI/CD, AWS & GCP—zero-downtime deployments, cost-optimized. I value clean architecture, thorough testing, and proactive communication across time zones. If you need a developer who can own the entire stack, infuse AI capabilities, and deliver on time—let’s talk.

Hi there. I’m a seasoned Python developer with over 10 years of experience building data processing systems, APIs, full-stack solutions and lead generation. I help businesses reliably collect, process, and operationalize data from complex online sources, including dynamic and authentication-based platforms, individual websites and popular social networks. My work includes handling complex data flows, automation pipelines, and large-scale data extraction projects where stability, accuracy, and scalability matter. I am skilled in API and dashboard development, setting up data pipelines, from extraction and analysis to visualization and processing. I provide: -Lead Generation/Data Acquisition & Automation Reliable collection, filtering, and structuring of data from complex online sources. I help businesses obtain accurate leads, market data, and real-time datasets from social platforms and web applications. -Backend, APIs & Dashboards API development, data pipelines, and internal dashboards for data management, analysis, and reporting using modern Python frameworks. -Flexible Data Delivery Clean, well-structured output delivered in JSON, CSV, Excel, Google Sheets, databases, or any format that fits your project. -AI workflows integration, RAG pipelines and so on I use: -Python, Flask and Flask extensions, FastAPI -Claude/Codex AI Agents 🚀 -requests, beautifulsoup4, Selenium, Playwright, Scrapy, aiohttp for data scraping -PostgreSQL, Supabase, SQLite3, MongoDB, MySQL, SQLAlchemy -React, Next.js, d3, chart.js, Tailwind CSS, Bootstrap, jQuery or pure javascript at front-end -Pandas and NumPy for data processing & analysis -OAuth, JWT, Third-Party API Integrations(Google API, Instagram, YouTube, Reddit etc.) You can take a look at my portfolio to see examples of my completed projects.

I’m a Full Stack Developer with 10+ years of experience building scalable SaaS platforms, business applications, dashboards, and custom web solutions. I specialize in React.js, Laravel, Node.js, Next.js, APIs, and modern full stack development for startups and growing businesses. I help businesses build and improve: * SaaS platforms * Admin panels & dashboards * CRM/ERP systems * Business management platforms * Workflow automation tools * Custom web applications * API integrations & backend systems * Multi-role user platforms * React.js frontend applications * Laravel & Node.js backend systems Tech Stack: React.js, Next.js, Laravel, Node.js, PHP, TypeScript, Python, MySQL, PostgreSQL, REST APIs, Tailwind CSS What you can expect from me: * Clean and scalable code * Responsive communication * Long-term reliability * Detail-oriented development * Performance-focused solutions * On-time delivery I can work on both existing systems and new product development, whether you need feature improvements, backend architecture, frontend development, or complete full stack implementation. If you have a project idea or need help improving your platform, feel free to reach out.

You need a fast, scalable, revenue-ready SaaS MVP that stands out globally? I'm Usman, a senior full-stack developer expert in React.js, Next.js, Supabase, Node.js, AI integrations (LLM, OpenAI, n8n Automation), AI tools (Cursor, Claude, Lovable), and MERN. I help founders build web applications that load up to 3× faster, scale reliably, and improve conversion and retention. 🔹 What I Specialize In: ✅ Frontend: React.js, Next.js, Vite, Redux, TypeScript, Tailwind CSS, WordPress, JavaScript, GSAP, Adalo, Fabric.js, Tiptap editor, Web Development, Webflow ✅ Backend & Automation: Node.js, Supabase (Auth, Database, Storage), Express.js, Nest.js, Hocuspocus Yjs, n8n, Zapier, Make, Webhooks, Web Application ✅ APIs & AI Integrations: LLMs, LangChain, RAG, OpenAI, Twilio, Elevenlabs, Chatbots (Vapi), RAG, SDKs, NLP, OCR, RESTful APIs, GraphQL, Shopify Storefront, Stripe, Hugging Face ✅ AI Dev Tools & Vibe Coding: Cursor, Claude, Lovable, GitHub Copilot, Replit, Bolt, Base44 ✅ Database: Supabase, MongoDB, PostgreSQL, Firebase ✅ Realtime Features: Socket IO, WebRTC, Supabase Realtime ✅ Mobile: React Native, Expo ✅ Cloud & Devops: AWS (EC2, S3, Lambda), Vercel, Cloudflare, Netlify, Docker, Nginx, GCP, Azure, Apache, SSL Certbot, SSH, CI/CD, Github, Gitlab 💡 No code, no brand? No problem. I'll take your vision from zero to launch-ready, complete with sleek UI/UX, scalable infrastructure, and smart AI features that give you a competitive edge. 📈 Outgrown your current tech stack? I'll refactor, optimize, and upgrade your application with modern frameworks (Next.js, Node.js, Supabase) and AI (OpenAI, LLMs, LangChain, SDKs) capabilities, turning bottlenecks into breakthroughs. 🎯 Industries I have worked with: Fintech, Crypto/Trading, SaaS, E-commerce, Healthcare, Real Estate, EdTech, Sports, GPS Tracking, and many more 🔹 What You Get: ✅ Full-cycle Web development from idea to launch ✅ Clean, scalable, maintainable code using Next.js, Node.js ✅ AI-powered features and smart automation ✅ Seamless third-party API integrations ✅ Payment gateway setup (Stripe, PayPal, Crypto, Razorpay, Local Bank, etc) ✅ Real-time chat, tracking, and live updates ✅ Mobile-responsive, fast-loading interfaces ✅ Bug fixes, optimization, and ongoing support 🚀 Why work with me? ⭐You get 1 expert who handles everything - Design to Deployment. No coordination headaches. ⭐ I believe technical skills are only half the job. The other half? Communication. Here's how I make sure we're always on the same page: - Daily 2-minute Loom updates or written Progress report - 4-hour US/EU timezone overlap - Clean, documented code - Focus on long-term partnership 𝗥𝗲𝗮𝗱𝘆 𝘁𝗼 𝘀𝘁𝗮𝗿𝘁? Check out my portfolio below or click the green 'Invite' button. I offer a FREE 15-minute architectural review to ensure we are the right fit before we start. Thanks, Usman Khalid Right Keywords to find me: React, React.js, React Native, Node.js, Node, Next.JS Next JS, Javascript, Typescript, Supabase, Firebase, Figma, LLMs, OpenAI, ChatGPT, Gemini, Express.js, Nest.js, Docker, Github, Linear, Trello, Slack, PSD, XD, Web Development, HIPPA, GSAP, Framer motion, GDPR, QA, Web Application, Web Design, Website Design, Wordpress, Shopify Storefront, Tailwind CSS, HTML, CSS, Shadcn, N8n, Make, API, API Development, API integration, Adalo, npm, monorepo, polyrepo, Bootstrap, Frontend, Backend, Bug Fixiation, Prompting, RLS, Auth, MERN Stack, Stripe, Paypal, Vercel, Netlify, Amazon Web Services, AWS, WebRTC, Tiptap, Crypto bot, Chatbot, Ui/Ux, LLM, Azure, Zustand, Redux, Airtable, AI Developer, MVP, SaaS, Lambda, Third party API, Blockchain, Wordpress, Php, Headless CMS, Cypress, Jest, Cursor, Lovable, Gemini, Claude, GitHub Copilot, Replit, Bolt, Base44, puppeteer, pdf generation, pdf.js, fabric.js, electron.js, MERN, Hugging Fcae, Webflow, AI powered Automation