🚀 Full-Stack AI SaaS & Automation Engineer | Production-Grade Systems 🏆 Top Rated | 6+ Years Experience | 100% Job Success I design and build scalable SaaS platforms, workflow automation systems, and AI-powered business applications that run in real production environments. Not prototypes. Not experiments. Real systems that businesses depend on daily. Clients work with me when they need someone who understands both business workflows and technical architecture someone who can turn complex ideas into reliable, scalable products. 📊 Selected Projects 🏥 Multi-Tenant Clinic Management SaaS Platform Built a healthcare-focused SaaS platform providing administrators control over users, clinics, subscriptions, billing, compliance workflows, system monitoring, and operational reporting. Implemented role-based access, revenue dashboards, invoice generation, payment alerts, and subscription management. 📈 AI-Powered CRM Workspace & Lead Management System Designed and developed a modern CRM platform focused on lead tracking, task management, client communication, scheduling, analytics, and workflow visibility. Created interactive dashboards and productivity tools that streamline sales operations and improve team efficiency. 🛒 E-Commerce & Point-of-Sale Management Platform Built a complete admin dashboard for managing orders, products, customers, collections, fulfillment, payments, and business analytics. Implemented reporting, inventory workflows, order tracking, and operational dashboards for day-to-day business management. 📊 Additional Results ✔ Built multi-tenant SaaS platforms with subscription and role-based access systems ✔ Developed AI-powered business applications and workflow automation solutions ✔ Implemented RAG-based AI pipelines using OpenAI and structured retrieval ✔ Delivered secure admin dashboards handling large operational datasets ✔ Automated internal business workflows saving teams significant manual effort I focus on clean architecture, long-term scalability, and production reliability ensuring your system doesn't just launch, but continues to scale as your business grows. ━━━━━━━━━━━━━━━━━━━━━━━ 🧩 Core Systems I Build 🚀 SaaS Platforms & Subscription Systems 🏢 Custom CRM & ERP Systems 📊 Admin Dashboards & Analytics Tools 🔄 Workflow Automation Systems 🤖 AI-Integrated Applications 💳 Payment & Billing Systems ⚙️ Internal Business Platforms ━━━━━━━━━━━━━━━━━━━━━━━ 🛠 Core Technology Stack Frontend React • Next.js • SvelteKit TypeScript • Tailwind CSS Backend Node.js • NestJS • FastAPI REST APIs • GraphQL Secure Authentication & RBAC Databases PostgreSQL • Supabase MongoDB • Redis Prisma ORM Automation & AI OpenAI API LangChain RAG Pipelines Crew AI n8n • Zapier • Make Infrastructure Docker AWS Stripe Billing Systems ━━━━━━━━━━━━━━━━━━━━━━━ 🏥 Secure & Compliance-Aware Systems ✔ HIPAA-ready architecture ✔ Role-based access control systems ✔ Secure authentication workflows ✔ Privacy-focused data handling (Security-first design available for healthcare and regulated systems.) ━━━━━━━━━━━━━━━━━━━━━━━ 🔄 How I Work 1️⃣ Understand business workflows and requirements 2️⃣ Design scalable system architecture 3️⃣ Build clean, maintainable production-ready code 4️⃣ Implement automation and AI workflows 5️⃣ Optimize performance, reliability, and security 6️⃣ Provide documentation and long-term support Reliability, structure, and scalability always come first. ━━━━━━━━━━━━━━━━━━━━━━━ ⭐ Why Clients Choose Me ✔ Top Rated freelancer with 100% Job Success ✔ Strong SaaS architecture and backend engineering expertise ✔ Proven experience building healthcare, CRM, and business management platforms ✔ Deep workflow automation and AI integration experience ✔ Clear communication and structured execution ✔ Focus on long-term partnerships ━━━━━━━━━━━━━━━━━━━━━━━ 📩 Let’s Build Something That Scales If you're planning to build a SaaS platform, automate business workflows, or integrate AI into your systems, I can help you design and deliver a reliable solution. Send me your requirements, and I'll suggest a clear technical direction before development begins.

Got an idea that needs AI in it? I build the whole thing — from the chat interface your users see, to the agents and workflows running behind the scenes. I work mostly with startups and founders who want to ship fast without cutting corners. Whether it's an AI assistant, an automation workflow, or a full SaaS product, I handle the full stack in TypeScript so everything stays clean and consistent. Some recent things I've built: a short-form video generator that turns prompts into fully edited TikTok/YouTube clips with narration, music, and subtitles — real-time, no loading screens. A lawyer-matching chatbot that lets users find, evaluate, and book legal help through a conversation. A receipt scanner that extracts and organizes data from uploaded images automatically. If you've heard words like Supabase, Next.js, or OpenAI and want to build something with them, I can take it from idea to deployed product. --- Languages: TypeScript, JavaScript, Go Frontend: Next.js, React, SvelteKit, Astro Backend: Node.js, Bun.js, Hono.js, REST API, GraphQL AI & LLMs: Vercel AI SDK, OpenAI, Claude, Gemini, LangChain, Replicate, ElevenLabs, Vapi Automation: n8n, Flowise Databases: PostgreSQL, MySQL, MongoDB, Redis, Supabase, Firebase Other: Framer Motion, GSAP, Figma, Spline3D, Playwright, Puppeteer

If you're building a SaaS product, AI platform, or a full-stack web app and need a developer who can move fast, communicate clearly, and deliver quality work on time every time - I will help you build and ship it. With 5+ years of experience as an independent Full-Stack NextJs Developer, I’ve helped founders and businesses build, improve, and scale products using NextJs, ReactJs, Supabase, Node.js, TypeScript, MongoDB, and Vercel. I also build with AI. I use Claude code and Codex to speed up development and write code. so you get quicker delivery with no drop in quality. 33 projects delivered successfully • 5★ client feedback • 100% job success score Clients usually work with me when they are thinking: ⨀ “We need someone who can work across both frontend and backend.” ⨀ “We need a reliable NextJs developer who can move fast and deliver results.” ⨀ “Our product is growing and performance or architecture is starting to slow us down.” ⨀ “We want clear communication, predictable delivery, and ownership.” What I Can Help You Build → Full-Stack Web Applications Build complete products using NextJs, ReactJs, Node.js, Supabase, PostgreSQL, MongoDB, TypeScript, and Vercel. → Frontend Development Fast, responsive, and modern user interfaces using NextJs, ReactJs, TypeScript, JavaScript, Tailwind CSS, and MUI. → Backend Development Secure and scalable backend systems using Node.js, Supabase, PostgreSQL, MongoDB, REST APIs, GraphQL, and TypeScript. Frontend: NextJs, ReactJs, TypeScript, JavaScript, Tailwind CSS, Vercel Backend: NodeJs, Supabase, PostgreSQL, MongoDB, Express, REST APIs, GraphQL Working with me, you can expect: ⨀ Production-ready features - not just completed tasks ⨀ Fast execution with attention to reliability and edge cases ⨀ Clean, responsive frontend experiences with strong UX fundamentals ⨀ Clear communication and consistent progress updates ⨀ Well-structured, readable code that is easy to extend and maintain If you need a developer who can contribute beyond implementation and help you ship a performant and scalable platform — send me a message with what you're building.

Engineer from Bosnia and Herzegovina building fintech and AI SaaS systems where application code, payments infrastructure, and data pipelines meet. Frontend with Next.js, React, Angular, Svelte, TypeScript. Backend services in .NET, Spring Boot, FastAPI, and NestJS with REST and GraphQL APIs. Cloud deployments on AWS and Azure with containerized infrastructure. My work often sits at the intersection of financial systems and AI: payment integrations (Stripe and billing platforms), LLM-powered product features, and intelligent automation built with modern model ecosystems including OpenAI, Claude, Gemini and OpenClaw. When products start generating real data, I design pipelines using Python, Airflow, Kafka, and dbt, moving operational data into analytics, automation, and AI workflows. Typical work: * Fintech dashboards and payment infrastructure * AI-powered SaaS products and LLM integrations * API ecosystems and scalable backend systems * Cloud infrastructure and data pipelines Some projects start from scratch. Others arrive when the system already has… character. Both are interesting.

🔥 Front-End / UI / UX Developer with 5+ years of experience — now building smarter interfaces with AI-powered solutions. ✅ Immediate Availability 🌟 I deliver high-quality, scalable front-end solutions that are visually polished, performance-driven, and enhanced with modern AI integrations where they add real value. If you’re looking for a developer who understands design, performance, and intelligent user experiences, you’re in the right ✔️ place to achieve your goals 🎯. Pixel perfection? YES. Semantic, clean, and readable code? ALWAYS. W3C-valid, responsive, SEO-friendly, and performance-optimized interfaces—written so cleanly you’ll enjoy reading the code as much as using the product. I specialize in crafting AI-ready front-end architectures, integrating intelligent features such as AI-driven UI flows, API-powered automation, chat interfaces, dashboards, and data-driven components that elevate user experience. 🧠 Skills & Expertise 🚀 Frontend: HTML, CSS, JavaScript, ReactJS, NextJS, VueJS, Angular, Svelte, Tailwind CSS, Bootstrap, Material UI, Ant Design 🚀 AI & Modern Web: AI-powered UI integration, OpenAI / API-based features, AI dashboards, intelligent forms, chat UI, automation-ready frontends 🚀 Back-End: Laravel, Node.js, Express, NestJS, Strapi, GraphQL, Socket.io, AWS Lambda 🚀 Databases: MongoDB, Firebase, Firestore, DynamoDB, MySQL, PostgreSQL 🚀 UI/UX Design: Figma, Sketch, Adobe XD, Photoshop — seamless design-to-code handoff 🚀 Version Control: Git, GitHub, GitLab, Bitbucket 🚀 Workflow: Agile, Jira, Scrum, Trello 🚀 Quality: Cross-browser, cross-platform, pixel-precise, clean & well-commented code ↪️ Why clients choose me ✅ Client-focused mindset & clear communication ✅ Fast turnaround with structured development process ✅ AI-aware development for future-ready products ✅ Reliable availability & proactive updates ✅ No excuses — just results Please invite me to chat so we can discuss your project and turn your idea into a polished, intelligent product. ❤️ Thanks for visiting my profile Nakrani A. 🔑 KEYWORDS AI Frontend Developer, AI Web Development, AI UI Integration, OpenAI API Frontend, Smart Web Applications, AI Dashboard UI, Chat UI Development, SaaS UI Design, Figma to Code, Frontend Developer, UI UX Design, Responsive Web Design, Landing Page Design, Web App Development, React Developer, Next.js Developer, Tailwind CSS, Pixel Perfect UI, Design to Development, API-Driven UI, REST API Integration, GraphQL UI, Automation UI, Modern Web Design, Performance Optimized Frontend, Mobile First Design, Interactive UI, Intelligent User Experience, AI-Ready Web Interfaces

I build and improve production SaaS platforms, web and mobile apps, AI features, dashboards, portals, and API integrations using React, Next.js, Node.js, React Native, TypeScript, Python, AWS, PostgreSQL, MongoDB, Supabase, Stripe, and OpenAI API. Most clients come to me when they need someone who can do more than write tickets. I can understand the product, review the architecture, clean up the codebase, plan the work, communicate clearly, and ship reliable features. What I can help with: • Full-stack SaaS development • React, Next.js, and TypeScript frontend development • Python, Django, FastAPI, Node.js, Express, and NestJS backend development • REST API and GraphQL API development • OpenAI API, Anthropic Claude, Google Gemini, and LLM integrations • LangChain, LangGraph, AI agents, and AI workflow automation • RAG systems, vector search, embeddings, semantic search, and document-based AI • Chatbots, AI copilots, AI assistants, voice AI, transcription, summarization, and prompt engineering • Function calling, tool calling, AI automation, Retell, LiveKit, n8n workflows, and third-party API integrations • Stripe payments, subscriptions, billing, and webhooks • PostgreSQL, MongoDB, MySQL, Supabase, and Prisma • AWS, Vercel, Docker, CI/CD, and production deployment • Admin panels, dashboards, customer portals, and internal tools • Refactoring, bug fixing, performance optimization, and technical audits I’m comfortable joining an existing team or leading delivery independently. I can write code, review PRs, structure sprints, work with designers and product owners, and keep the project moving without needing constant supervision. I also use AI development tools like Cursor, Claude Code, and GitHub Copilot to move faster, but every line is reviewed carefully before it ships. If you need a reliable full-stack developer for a new SaaS product, an existing platform, AI integration, API development, or long-term product support, I’d be happy to help.

I build practical automation and AI workflows that save time, reduce manual work, and actually run in production. Most of my work is around n8n, Python, and AI-powered systems that connect tools, APIs, and data smoothly. If you’re a startup, founder, or team looking to automate operations, build AI agents, or connect systems without things breaking later, I can help you design and implement it cleanly. I also have a strong background in visualization and animation using Manim, which helps a lot when explaining complex systems, demos, or technical concepts clearly. ⚡ What I bring to the table: ✅ n8n workflow automation (APIs, webhooks, databases, AI tools) ✅ AI agents & LLM-powered pipelines (Python + n8n) ✅ Reliable backend logic, not just “quick hacks” ✅ FFmpeg for video processing, automation, and media workflows ✅ Manim animations for technical demos and explanations ✅ Clean code, clear communication, and honest timelines (no ghosting) ⚡ What I bring to the table: ✅ Clear, smooth 1080p60 animations (2D & 3D) with Manim ✅ Python-powered visual storytelling ✅ Support for LaTeX-heavy or symbol-rich scripts ✅ Polished output, editable templates, and responsive updates ✅ Fast, clear communication (I won’t ghost you) 🏆 Top 10% Rated Python Developer on Upwork 🏆 100% Job Success 🚀 40+ Successful Projects. 🚀500+ Hours of Professional Experience I've worked with: @MathemitNoel, @zengeometry, and @CrystalMath_, @CadenzaLabs, Sophia Edu Labs, Wisconsin School of Business, Rareskills 👏Testimonials: -Noel ⭐⭐⭐⭐⭐ "Mustafa created an outstanding Manim animation for me. The animation was text and formal heavy, and Mustafa incorporated a new text animation that I really liked. Mustafa received the order today and delivered it in perfect condition the same day. The quality of the animation is excellent. Thank you, Mustafa." -Noel ⭐⭐⭐⭐⭐ "Mustafa created an outstanding 3D manim animation for me. Even given the long rendering times, he was able to complete the project on time. I was extremely impressed that he was so dedicated, even working until the early hours of the morning (until 2 a.m. plus 1 hour due to the time change) to meet the deadline. The quality of the 3D animation is excellent and Mustafa was careful to incorporate my brand colors and design. A particular highlight for me were the slide titles created in Manim – a welcome and enjoyable addition. Communication with him was, as usual, excellent; he always answers quickly and precisely. It was a pleasure to work with such a talented and dedicated professional like Mustafa. I'm already looking forward to the next project I'll tackle with Mustafa." -Maxence ⭐⭐⭐⭐⭐ "Thank you so much, Mustafa ! 🤩It was super-duper nice working with you !! You've done amazing work: great animation and very well written code, making it easy to understand and reuse and extremely friendly 🤝 I had precise expectations, and you succeeded in building on those to overdeliver 🤯 I can't thank you enough for helping me out, saving time, and teaching me stuff. Good luck in the future, and see you soon for other projects !!" -Yan ⭐⭐⭐⭐⭐ "Excellent communication! Fast delivery! More importantly, he is really good at coding! I have talked to a few people on Fiverr and Upwork about the task. Mustafa was the only one who could accomplish it, and he did it in a very short time!" 🎥 Specialties: Python | Latex | React | Nextjs | Manim Animation | Mathematical Visualization | Educational Animation | Technical Explainers | 3D Mathematical Rendering | STEM Animation | Science Communication | Computational Graphics | Algorithm Animation | Python Animation | Physics Visualization | Complex Concepts Simplified | Manim Tutorials | Data Science Animation | Graph Theory Visuals | Theoretical Physics Explained | Code-driven Animation | Computer Science Visualization | Mathematical Storytelling | Visualizing Abstract Concepts | Interactive Mathematical Presentations | Advanced Programming Animation | Algorithmic Illustrations | Data Visualization | Frontend Web Development

Building products end to end — architecture, backend, frontend, deployment — and staying involved long enough to make sure they actually work in production. Most of my recent work has been with early-stage and growth-stage companies where I was the person making the technical decisions, not just executing them. That includes a tournament platform that reached thousands of users within weeks of launch, a live locker booking system with real-time availability and payment integration, and an AI-powered trading assistant built on the Claude API with structured market analysis and Telegram notifications. I work across the full stack: Backend: Laravel, Django, Python Frontend: SvelteKit, React, React Native Databases: PostgreSQL, MySQL, MSSQL Infrastructure: Docker, CI/CD pipelines, AWS, Azure AI: Claude API integrations, multi-agent workflows, agentic automation Portfolio: dev.metchev.net Beyond development, I help teams with architecture planning, codebase audits, Git workflows, and technical hiring. PMI-ACP certified — useful when delivery structure matters alongside the technical work. I have worked with enough non-technical founders to know that the technical explanation is rarely what they actually need. What matters is whether the product does what it should, on time, without surprises. If that sounds like the kind of person you are looking for — reach out.

27-year-old French developer with a passion for Three.js/WebGL and a wide array of frontend technologies. My expertise lies in bringing to life engaging animations and interactive experiences. Below is an overview of my skill set and accomplishments: Core Frontend: - Proficient in foundational frontend technologies: HTML, SCSS, JavaScript, Fetch API - Skilled in responsive design and version control using Git Specialized Framework Experience: - 4 years of hands-on experience with React - Competent in Vue and Svelte frameworks Animation and Design Mastery: - Expertise in GSAP for advanced web animations - Proficient with design tools including Photoshop, Figma, Affinity... - Skilled in using Blender for 3D model optimization/edition Additional Technical Proficiencies: - Experience in using Next.js and Vite for project development - Comfortable with TypeScript for scalable web applications - Basic backend skills, including Node.js and database tools - One year of experience building desktop applications in Rust, specializing in low-level graphic programming and performance-oriented workflows. Three.js/WebGL Specializations: - Shader programming and custom post-processing techniques - Integration of physics engines like Ammo.js and Cannon.js - Proficient in particles management - In-depth understanding of the rendering pipeline and optimization using profiling tools - Experience in video game development with Three.js - Demonstrated proficiency in TSL and WebGPU, supporting advanced graphics and rendering tasks. Recognitions as a developer: - Awarded one FWA site of the day - Awarded one CSSDA site of the day - Received an honorable mention from Awwwards I'm always excited to collaborate and create outstanding digital experiences, If you're looking for a developer who blends technical skill with creativity, let's connect and explore how we can work together!

With over 15 years of experience, I partner with ambitious founders and businesses to transform complex ideas into high-performance web applications, SaaS platforms, and AI-integrated systems. As a full-service technical partner, I provide both strategic leadership and hands-on development, bridging the gap between your vision and successful execution. My expertise spans modern web technologies, AI/LLM integration, and cloud infrastructure, delivering solutions that drive tangible business growth. Why Partner with Me? 🛠️ End-to-End Technical Expertise: From strategic planning and Fractional CTO services to hands-on custom software development, I leverage deep experience across 15+ languages and frameworks (React, Svelte, SvelteKit, FastAPI, Node.js, Python, TypeScript, SQL, and more) to choose and build the optimal solution for your specific needs. 🤖 Cutting-Edge AI Development: Turn the latest AI innovations into business value. I specialize in AI-first development using tools like Claude Code, Gemini CLI, bolt.new, and v0. With experience teaching advanced AI development to hundreds of engineers, I create production-ready LLM agents, RAG systems, AI auto-triage solutions, and seamless OpenAI API integrations. 🌐 Modern Full-Stack Solutions: Expert in React, Svelte, SvelteKit, Electron, and React Native development. I also build Chrome extensions, implement advanced website scraping with anti-bot detection, and create cross-platform applications that work seamlessly across all devices. ⚡ IoT & Real-Time Systems: Design and implement complete IoT platforms using FastAPI, MQTT, and PostgreSQL, including firmware development with C++ and Arduino for hardware integration. 📈 Scalable & Resilient Architecture: Build a strong foundation for growth. Whether it's an MVP, microservices architecture, or high-performance systems using MongoDB, Redis, and RabbitMQ, I design solutions built to scale reliably. 🧩 Complex Problem Solving & Project Rescue: Drawing on doctoral-level research experience in Big Geospatial Data Management and extensive full-stack capabilities, I excel at tackling difficult technical challenges and turning around struggling projects. 🤝 Collaborative Partnership: Consider me your dedicated tech partner. Using agile methodologies, I work closely with you and your team, ensuring clear communication, alignment with business objectives, and successful project delivery. Recent Specializations: - AI-First Development with modern tools and frameworks - Live transcription systems and real-time data processing - Advanced web scraping with Puppeteer and BeautifulSoup - Cross-platform mobile development with React Native - Chrome extension development for enhanced web experiences - Teaching and mentoring engineers in advanced AI development My Process: 🔍 Discovery: Deep understanding of your business objectives and technical requirements. 🗺️ Strategy & Design: Collaborative planning and architecture design tailored to your goals. 💻 Agile Development: Iterative building with regular demos and feedback loops. ✅ Quality Assurance: Comprehensive testing and performance optimization. 🎉 Launch & Handoff: Smooth deployment and thorough knowledge transfer. Ready to build something great? Let's discuss how I can help bring your vision to life. Message me today to schedule a free 30-minute consultation and see if we're the right fit for your project.