👋 Hi, I'm Julia from Koitechs - Top Rated Plus Upwork team focused on React, Next.js, Node.js, React Native, TypeScript, Supabase, PostgreSQL, and AI product development. My main goal is save up to 40% of our budget to get a market-ready, stable and scalable product. I help companies hire in-house, CTO-approved engineers who join fast, take ownership, and deliver production-ready software. ✅ 9+ years in software development ✅ 155+ web and mobile projects delivered ✅ 20,500+ Upwork hours in React / Next.js / Node.js / React Native ✅ 75% repeat clients ✅ Engineer matching in 24 hours or less ✅ 2-week trial period ✅ 35+ in-house engineers ✅ 40+ MVPs released ✅ Products supported by our team include platforms with 5M+ daily users 🚀 React / Next.js / Full Stack We build SaaS platforms, marketplaces, dashboards, admin panels, CRMs, AI products, and scalable web apps using React, Next.js, Node.js, TypeScript, Supabase, PostgreSQL, Firebase, MongoDB, REST API, GraphQL, Stripe, OAuth, WebSockets, AWS, Vercel, and Docker. Our team is a strong fit if you need a react developer , web developer , full stack developer , nextjs developer, mern developer, or backend engineer. We help with MVP development, legacy code takeover, architecture modernization, Core Web Vitals, API integrations, payments, auth, subscriptions, user roles, and production launch. 📱 React Native / Mobile We build and support iOS and Android apps using React Native, Expo, Firebase, Supabase, Node.js, and API-driven architecture. We can help if you need a react native developer , mobile app developer, iOS / Android support, app takeover, mobile maintenance, push notifications, App Store / Google Play releases, payments, or backend integrations. We also support mixed mobile environments with flutter developer , android developer , backend developer, AI developer, or web developer. 🤖 AI SaaS / AI App Development We build AI-powered products connected to real business workflows. Experience: AI SaaS, AI MVPs, AI chatbot development, AI agent development, OpenAI API, Claude API, LLM prompt engineering, RAG, automation, web scraping, AI model integration, copilots, and AI workflow validation. AI stack: OpenAI API, Claude API, LLMs, RAG, AI Agent Development, AI Chatbot, Generative AI, Python, FastAPI, Supabase, PostgreSQL, pgvector, automation, data analysis, web scraping. 🧩 Mixed-Stack Support Our core focus is React, Next.js, Node.js, React Native, TypeScript, Supabase, and AI. We also support products involving wordpress , vue , angular , python developer , scala developer , flutter developer , android developer , mern , and other web/mobile technologies. 🏆 Industries 📦 Logistics - 5+ projects: tracking, shipment dashboards, carrier/shipper workflows, maps, route visibility. 🏥 HealthTech -4+ projects: medical booking, clinic platforms, patient flows, admin systems. 🛒 Marketplaces & E-commerce - 15+ projects: multi-vendor products, Stripe, subscriptions, bidding, complex search. 🏠 PropTech / Real Estate -5+ projects: listings, booking flows, agent dashboards, rental platforms. 🤖 AI Startups - 25+ AI products/features: AI SaaS, chatbots, agents, copilots, OpenAI / Claude integrations. 💰 FinTech - 3+ projects: Stripe Connect, billing, payment flows, invoicing. 🎮 Gaming - 5+ projects, including 2 major global gaming brands: dashboards, analytics, real-time interactions. 📚 EdTech - 5+ projects: student dashboards, progress tracking, content platforms. 📣 MarTech - 1 global market-leading project: dashboards, analytics, segmentation, workflows. ⚽ SportsTech - 10+ projects: live data, dashboards, events, rankings, stats, mobile apps. 📌 How We Work 1️⃣ Discovery & technical planning 2️⃣ Engineer matching within 24h 3️⃣ 2-week trial period 4️⃣ Weekly demos and reports 5️⃣ CTO-approved delivery with code review and QA 6️⃣ Long-term support after launch 🚀 Building a SaaS, MVP, marketplace, React app, Next.js platform, React Native app, AI product, or mixed-stack web/mobile platform? Click “Invite” or “Hire” - I’ll help you clear the estimate or discovery phase within 24 hours or less.

Senior Flutter & Node.js Developer | 5+ Years Experience | Full-Stack Architect Overview Hi, I’m Usama Mukhtar, a Software Engineer and a certified Flutter and Node.js developer with over 5+ years of hands-on experience. I specialise in mobile app development using Flutter and backend development with Node.js. I help businesses transform ideas into user-focused, scalable, and high-performance digital products by using modern technologies and efficient development practices. Trusted By: Over 100 global clients across healthcare, fintech, e-commerce, POS systems. Success Rate: 95% client retention with more than 174 projects successfully delivered on time. Commitment: I offer a free 60-minute consultation to understand your requirements and align the technical strategy with your business goals. 🟢Technical Skills Strong experience with third-party libraries and RESTful APIs Skilled in Android and iOS development Expertise in state management and app architecture in Flutter Proficient in Firebase (authentication, real-time DB, Firestore, cloud functions) Experience with push notifications and in-app purchases Integration of payment gateways and subscription models Google Maps and location-based services API integration for real-time data handling and synchronisation Strong command of Dart Additional experience: Java, Kotlin, SQLite, HTML, JavaScript, CSS3, Git 🟢Soft Skills Excellent problem-solving abilities Strong communication and teamwork Professional documentation practices Responsible, reliable, and legally compliant Creative and proactive approach to resolving issues Ability to clearly understand and deliver business requirements 🟢Roles and Responsibilities Design, develop, test, and deploy mobile and web applications Collaborate with UI/UX designers, QA teams, and stakeholders Take ownership of delivering high-quality and user-friendly products Provide continuous support, updates, and maintenance Stay current with modern technologies and trends Optimize workflows and write clean, reusable code Build Flutter applications for both Android and iOS Follow company standards, best practices, and guidelines Develop reusable UI components for efficient scalability 🟢Conclusion With strong expertise in Flutter, Node.js, and full-stack development, I focus on delivering reliable, high-quality, and scalable solutions. I have hands-on experience with Firebase, push notifications, in-app purchases, payment integrations, maps, and API-based applications. Client satisfaction and clean, efficient code are always my top priorities. I am confident that I can deliver the results you need for your project.

Hey! Invite me as your AI colleague and I will help you find where AI can save time, reduce cost, and create measurable ROI in your business. 🌟 Senior Full Stack and AI Engineer for SaaS, AI Agents, Automation 🚀 Scaled platforms to 1 Million+ users 💰 Supported $1 Million and $0.5 Million funded startups 💯 100% client satisfaction 🤝 90% recurring clients 🏆 12+ years of professional experience ⭐ 26,732 plus Upwork hours delivered 🔥 $600K+ plus earned through long term client work ✨ 81 plus five star projects completed I use modern workflows and AI coding tools to move up to 5x faster while still reviewing architecture, security, data flow, and code quality manually. Speed matters, but reliability matters more. Built MVPs for startups with $12 Million+ funding raised and products serving 1.5 Million+ users worldwide. 🔥 𝟳𝟱% 𝗛𝗥 𝗿𝗲𝗱𝘂𝗰𝗲𝗱 with AI Agent Development. 🔥 𝟯-𝟲𝘅 𝗥𝗢𝗜. 𝟴𝟬𝟬+ 𝗵𝗼𝘂𝗿𝘀 n8n Automation. Over 12 years I've delivered $670K+ across Web Development, Web Application, and AI Agent Development engagements in FinTech, HealthTech, PropTech, and B2B SaaS. My clients have collectively raised $12 Million+ in funding: 🔥 Tallyfy ($1.4M), MetaBeta (€500K) 🔥 Elevatus ($10.5M) 🔥 scaled to 1 Million+ active users. I am a full stack developer and AI developer with 12 years of experience building production systems across FinTech, HealthTech, PropTech, and B2B SaaS. My clients have raised $12M+ in funding including Tallyfy ($1.4M), MetaBeta (€500K), and Elevatus ($10.5M), and scaled products to 1.5 Million+ active users worldwide. Over 12 years I have delivered $670K+ across web development, web application, and AI agent development engagements with 90% recurring clients and 100% satisfaction. ✅ 12+ years | $670K+ delivered | 1.5M+ users scaled | $12M+ client funding raised ✅ AI agent development: 75% HR reduction, 3-6x ROI, 800+ hours of n8n automation ✅ Full stack development: 40+ production systems across FinTech, HealthTech, PropTech, SaaS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Key results from recent engagements: ▸ Reduced a client's HR overhead by 75% using a Python and LangChain AI agent that replaced 3 full-time employees with a 24/7 autonomous sales system ▸ Built API integration pipelines unifying 12 platforms simultaneously and processing 500+ daily NLP queries ▸ n8n automation across 30 active marketing workflows drove a 40% increase in lead generation ▸ AI chatbot and AI app development solutions returning 3-6x ROI within the first 90 days ▸ PostgreSQL optimizations delivering 3x query performance improvements across high-traffic applications ▸ German tax-filing SaaS processing 36 Million+ declarations on Laravel and PostgreSQL ▸ HIPAA-compliant healthcare platform on Node.js, React, and TypeScript ▸ PropTech portal on Next.js, FastAPI, and PostgreSQL handling 100+ search parameters ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 𝗔𝗜 𝗔𝗴𝗲𝗻𝘁 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ AI agent development is my primary engineering focus. I design and build full agentic pipelines using Python, LangChain, and machine learning, from RAG-powered vector retrieval and knowledge graphs through to voice AI bots and autonomous multi-agent orchestration. Every AI agent system I deliver applies prompt engineering discipline and data science principles for domain accuracy. I treat AI development as a full-stack business transformation, not a feature addition. I layer API integration, API development, and RESTful API surfaces over FastAPI, Django, and Node.js backends, then deliver them through React, Vue.js, and Next.js frontends. Every AI agent development system I architect applies data science and prompt engineering for domain accuracy. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ I build backend systems on PHP, Laravel, Django, FastAPI, Node.js, NestJS, ExpressJS, and Ruby on Rails. Frontend interfaces are built with React, Vue.js, Next.js, Angular, TypeScript, JavaScript, HTML5, CSS3, and Tailwind CSS. Databases are PostgreSQL, MySQL, and MongoDB. Deployments run on Docker and AWS. I have delivered 40+ production full stack systems across every major vertical. API integration, API development, HTML5, and RESTful API connectivity are non-negotiable standards in every full stack project I lead. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 𝗪𝗲𝗯 𝗔𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻 & 𝗪𝗲𝗯 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ I have built web application and web development systems across every major vertical. React and Next.js frontends pair with PHP, Laravel, and Node.js backends grounded on PostgreSQL, MySQL, and MongoDB. I bring CSS3, HTML5, Tailwind CSS, TypeScript, and automation engineering precision to every interface. Every system I deliver is production-grade, documented, and built to scale. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

𝗠𝗼𝘀𝘁 𝗯𝗮𝗰𝗸𝗲𝗻𝗱 𝘀𝘆𝘀𝘁𝗲𝗺𝘀 𝗹𝗼𝗼𝗸 𝗳𝗶𝗻𝗲 𝘂𝗻𝘁𝗶𝗹 𝘁𝗵𝗲𝘆 𝗵𝗶𝘁 𝗿𝗲𝗮𝗹 𝘁𝗿𝗮𝗳𝗳𝗶𝗰. 𝗧𝗵𝗲𝗻 𝘁𝗵𝗲𝘆 𝘀𝗹𝗼𝘄 𝗱𝗼𝘄𝗻, 𝗯𝗿𝗲𝗮𝗸, 𝗼𝗿 𝘀𝘁𝗮𝗿𝘁 𝗱𝗿𝗼𝗽𝗽𝗶𝗻𝗴 𝗱𝗮𝘁𝗮. A production system should do more than just run. A properly built full stack system should handle load, scale without rewrites, integrate cleanly, and actively support your business instead of holding it back. 𝗧𝗵𝗮𝘁'𝘀 𝗲𝘅𝗮𝗰𝘁𝗹𝘆 𝘄𝗵𝗮𝘁 𝗜 𝗯𝘂𝗶𝗹𝗱 𝗳𝗼𝗿 𝗺𝘆 𝗰𝗹𝗶𝗲𝗻𝘁𝘀. I am a 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 specializing in Full Stack MERN development, Full Stack Next.js applications, scalable API design, and production-grade backend systems for serious businesses. I build full stack systems that are clean, fast and stable, without sacrificing architecture or long-term maintainability. 🌟 𝗪𝗵𝗮𝘁 𝗜 𝗵𝗮𝘃𝗲 𝗱𝗲𝗹𝗶𝘃𝗲𝗿𝗲𝗱 𝗳𝗼𝗿 𝗰𝗹𝗶𝗲𝗻𝘁𝘀   • Rebuilt a broken REST API for a SaaS platform reduced response time by 60% and eliminated recurring downtime   • Architected a Full Stack marketplace backend that scaled from 500 to 50,000 users without structural changes   • Fixed a Full Stack Next.js application with critical SSR issues — cut page load time in half before launch   • Built a Full Stack AI-powered chat system using OpenAI and vector embeddings for a B2B SaaS product   • Stabilized a Full Stack Shopify integration that was dropping orders — zero failures in 4 months post-fix Every project starts with understanding what is broken or what needs to be built, and ends with a full stack system that actually works in production. 𝗪𝗵𝗼 𝗜 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 I work with businesses and technical teams who need:   • A Full Stack Developer to build their SaaS platform, dashboard, or marketplace from scratch   • Full Stack MERN or Next.js development done cleanly and built to scale   • A reliable Full Stack Developer to fix a live system that is slow, unstable, or breaking under load   • Full Stack API development and third-party integrations without fragile workarounds   • Full Stack Shopify development and custom app integrations that work reliably at scale 🛠 𝗪𝗵𝗮𝘁 𝗜 𝗦𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘇𝗲 𝗜𝗻 𝗮𝘀 𝗮 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 ⚙️ 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁   • Full Stack MERN: MongoDB, Express, React, Node end-to-end   • Full Stack Next.js: SSR, ISR, API routes, and performance optimization   • Full Stack dashboards, admin panels, and data-heavy SaaS interfaces 🔌 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗔𝗣𝗜 & 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗦𝘆𝘀𝘁𝗲𝗺𝘀   • Full Stack REST and GraphQL APIs built for reliability and scale   • Third-party integrations without fragile workarounds   • Fixing broken backend logic on live production systems 🤖 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗔𝗜 & 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻   • Full Stack OpenAI integrations, embeddings, and production chat systems   • AI-powered features added cleanly into existing full stack products 🚀 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗢𝗽𝘀 & 𝗗𝗲𝗽𝗹𝗼𝘆𝗺𝗲𝗻𝘁   • Docker, CI/CD pipelines, and automated full stack deployments   • AWS and Vercel setup, optimization, and cost management   • Full Stack production fixes, performance tuning, and stability work 𝗪𝗵𝗮𝘁 𝗠𝗮𝗸𝗲𝘀 𝗠𝘆 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗗𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝘁 Most developers ship code and move on. As a Full Stack Developer I think about what happens when real users hit your system. Does it hold up under load. Is the architecture clean enough to extend later. Will it break at the worst possible moment. You are not just hiring a Full Stack Developer. You are getting someone who thinks about performance, stability, and long-term maintainability together. 𝗪𝗵𝗲𝗻 𝘄𝗲 𝘄𝗼𝗿𝗸 𝘁𝗼𝗴𝗲𝘁𝗵𝗲𝗿, 𝘆𝗼𝘂 𝗴𝗲𝘁: ✔ A professionally built Full Stack system or application ✔ Clean full stack architecture that scales without structural rewrites ✔ Stable backend logic that holds up in real production conditions ✔ Full Stack API and integration work done without fragile shortcuts ✔ Clear updates so you always know what is done and what is next ✔ A Full Stack Developer who treats your system like it matters 𝗧𝗼𝗼𝗹𝘀 & 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸 MongoDB, Express, React, Node.js, Next.js, Java, Shopify, OpenAI, Docker, AWS, Vercel, GraphQL, REST, Redis, PostgreSQL 𝗟𝗲𝘁'𝘀 𝗳𝗶𝘅 𝘆𝗼𝘂𝗿 𝘀𝘆𝘀𝘁𝗲𝗺 𝗼𝗿 𝗯𝘂𝗶𝗹𝗱 𝗶𝘁 𝗿𝗶𝗴𝗵𝘁 𝗳𝗿𝗼𝗺 𝘁𝗵𝗲 𝘀𝘁𝗮𝗿𝘁. 𝗦𝗲𝗻𝗱 𝗺𝗲 𝗮 𝗺𝗲𝘀𝘀𝗮𝗴𝗲 𝘄𝗶𝘁𝗵 𝘄𝗵𝗮𝘁 𝘆𝗼𝘂 𝗮𝗿𝗲 𝗯𝘂𝗶𝗹𝗱𝗶𝗻𝗴 𝗼𝗿 𝘄𝗵𝗮𝘁 𝗶𝘀 𝗯𝗿𝗲𝗮𝗸𝗶𝗻𝗴 𝗮𝗻𝗱 𝗜 𝘄𝗶𝗹𝗹 𝘁𝗲𝗹𝗹 𝘆𝗼𝘂 𝗲𝘅𝗮𝗰𝘁𝗹𝘆 𝗵𝗼𝘄 𝗜 𝗰𝗮𝗻 𝗵𝗲𝗹𝗽.

Building a modern web application requires more than just code; it requires a strategy that blends performance, scalability, and user experience. With over 5 years of experience in Full-Stack development, I specialize in building high-performance web applications using the MERN stack (MongoDB, Express, React, Node.js) and integrating AI capabilities to future-proof your business. Whether you need a complex SaaS platform, an AI-powered dashboard, or a seamless e-commerce site, I deliver clean, maintainable code that scales with your growth. Why clients trust me with their projects: AI Integration: I don't just build websites; I integrate LLMs (like OpenAI/ChatGPT) to create intelligent, responsive apps. End-to-End Ownership: From the first line of code to AWS deployment, I handle the full lifecycle. Reliability: I pride myself on transparent communication, hitting deadlines, and ensuring 100% client satisfaction. 💻 Technical Stack Front-End & UI: React.js, Next.js, Redux HTML5, CSS3, SCSS Bootstrap, Tailwind CSS, Material UI Figma to Code implementation Back-End & Database: Node.js, Express.js MongoDB, PostgreSQL RESTful APIs & GraphQL AI/LLM API Integration DevOps & Tools: Docker, Kubernetes AWS (EC2, S3, Lambda) CI/CD Pipelines, Git/GitHub I am always available for a chat to discuss how we can bring your vision to life. Let’s build something exceptional together. Click "Invite to Job" to get started!

✨ Top-Rated Full-Stack Java Developer | React/Angular | AWS 🚀 I build production-grade web apps with Java Spring Boot backends and React or Angular frontends. My focus is clean architecture, reliable APIs, and fast, usable UIs. I have delivered products in fintech, healthcare, logistics, and SaaS with payments, subscriptions, RBAC, audit trails, reporting, and real-time dashboards. I deploy on AWS with CI/CD. 🧩 What I Do 💹 Back-end: Java, Spring Boot, REST APIs, Microservices, Hibernate or JPA, OAuth2 or JWT, caching, queues 💹Front-end: React, Angular, TypeScript, Material or Ant, Redux or NgRx, responsive UI, accessibility 💹 Cloud and DevOps: AWS EC2, S3, RDS, Lambda, Docker, CI/CD, monitoring, cost control 💹 Data and Integrations: PostgreSQL, MySQL, Redis, webhooks, payment processors, third-party APIs 💹 Quality and Security: Unit and integration tests, code reviews, performance tuning, secure coding 🏆 Selected Wins • Built a payments and settlements engine with ledger, refunds, disputes, webhooks, and reports • Shipped a logistics load board with real-time tracking, bids, and document workflows • Delivered a health portal with secure messaging, scheduling, and HIPAA-aligned controls • Created operations analytics dashboards with drill-downs, alerts, and CSV or PDF exports 🔧 Services • Full-stack feature development and refactors using Java with React or Angular • API and microservices design, integrations, and webhooks • Cloud deployment on AWS, CI/CD, and observability • UI modernization with component libraries, state management, and performance tuning 🗂️ Tech Snapshot • Back-end: Java, Spring Boot, Hibernate, JDBC, OAuth2, JWT • Front-end: React, Angular, TypeScript, Redux, NgRx, Material, Ant • Cloud: AWS EC2, S3, RDS, Lambda, Docker, GitHub Actions, Jenkins • Data: PostgreSQL, MySQL, Redis, exports to CSV or PDF or JSON • Tooling: Git, Maven, Gradle, Postman, JUnit, Mockito If you want a reliable full-stack partner who can own a module end to end, design, build, test, and ship, let’s connect. 🙂

Full Stack Developer | React Developer | Node.js Developer | Next.js Developer | AI Full Stack Developer | SaaS Developer Need a Full Stack Developer who can turn your idea into a product people love and businesses rely on? You're in the right place. I'm a Top Rated Plus Full Stack Developer with 7+ years of experience helping startups and growing businesses build scalable products that create real business value. Over the years, I've delivered 50+ applications, integrated 1000+ APIs, and helped companies launch products used by thousands of users worldwide. As a Full Stack Developer, I handle everything from frontend architecture and backend systems to APIs, databases, cloud infrastructure, and production deployments. Clients also work with me as a Web Developer, React Developer, Node.js Developer, Mobile App Developer, and SaaS Developer, depending on their project requirements. I help founders and businesses launch MVPs, build multi-tenant SaaS platforms, modernize existing products, automate workflows, and create AI-powered applications that are reliable, maintainable, and designed for long-term growth. Specialization & Focus I specialize in React, Next.js, Node.js, Laravel, Python, and cloud-native architectures, helping startups and companies: • Launch MVPs quickly without creating future technical debt. • Scale SaaS platforms and multi-tenant systems with confidence. • Build AI-native applications and modern web products. • Automate workflows and internal operations. • Modernize legacy systems in a structured and low-risk way. What I Build SaaS & Web Platforms • React and Next.js frontends with clean and maintainable architecture. • Node.js and Python backends designed for performance and scalability. • Multi-tenant SaaS platforms, customer portals, admin dashboards, and internal tools. Automation & System Design • Background jobs, schedulers, and queues. • Event-driven architectures, caching strategies, and rate limiting. • API-first systems designed to scale cleanly across services. Cloud & Production Readiness • AWS infrastructure including EC2, S3, RDS, Lambda, and CloudFront. • Dockerized deployments with CI/CD pipelines. • Monitoring, high availability setups, and cost optimization. Security & Integrations • Authentication and authorization using JWT, OAuth2, and RBAC. • Integrations with payment gateways, CRM systems, ERP platforms, analytics tools, and third-party services. • REST APIs and GraphQL APIs designed with scalability and maintainability in mind. Industries I Work With Over the years, I've worked with startups and businesses across multiple industries and understand the unique challenges each sector faces. • Healthcare • Real Estate & PropTech • EdTech Platforms • Logistics & Supply Chain Solutions • Warehouse Management Systems • Hospitality & Booking Platforms • Construction & Field Service Solutions • E-commerce Platforms & Marketplaces • Fitness & Wellness Application • CRM, ERP, and Business Automation Systems AI & Modern Development I actively use modern development tools like Cursor, Claude, Lovable, Bolt, Replit, Emergent, and Antigravity to accelerate development and deliver faster. I also build AI-powered solutions using OpenAI, Anthropic, and Claude APIs, including AI chatbots, AI agents, RAG applications, workflow automation, and LLM-powered features that help businesses create better user experiences and automate operations. Technical Background I work across the full stack and adapt based on project requirements. • Frontend: React, Next.js, TypeScript, JavaScript, Tailwind CSS and responsive UI development. • Backend: Node.js, Python, Laravel and scalable service architecture. • Databases: PostgreSQL, MySQL, SQLite, MongoDB, Supabase, Realm Database, and Redis. • APIs: REST APIs, GraphQL APIs and third-party integrations. • Infrastructure: AWS, Docker, CI/CD pipelines and cloud deployments. • Product Focus: Scalability, security, maintainability and clean architecture. Depending on the project, clients work with me as a Full Stack Developer, Web Developer, React Developer, Node.js Developer, Python Developer, Laravel Developer, WordPress Developer, AI Full Stack Developer, Mobile app Developer, Software Engineer, or Startup MVP Developer. Why Clients Choose to Work With Me • Top Rated Plus and Upwork Certified. • 7+ years of Full Stack Development experience. • 50+ Applications Delivered • 1000+ API Integrations • Scalable and Maintainable Architecture • Clear Communication and Reliable Delivery • Long-Term Product Mindset Clients value that I ask the right questions early, identify risks before they become problems, and think beyond the immediate task. I believe great software is more than writing code. It's about understanding your goals, solving problems, and building products that grow with your business. Let's discuss your project. I'd be happy to review your requirements and recommend the best approach before we get started. Jamish P.

I'm a Full Stack Developer React Node, Full Stack AI SaaS Developer, and Node.js Developer with 15 years of experience in SaaS platforms, CRM systems, and scalable Web Application development from MVP to production launch. 100% Job Success | 125+ projects delivered | 50+ SaaS Platform | 10K+ users | 300K+ API/month As a Full Stack Developer React Node, and Full Stack AI SaaS Developer, I can build: ✔️ SaaS MVP development in 4–6 weeks ✔️ AI SaaS Development for AI-powered SaaS platforms as AI SaaS Platform Developer ✔️ Prototype and proof of concept as a Full Stack node.js react developer ✔️ Custom CRM and ERP systems ✔️ Multi-tenant SaaS platform, booking system, booking platform, website, web app E-commerce marketplaces platform As Full Stack Developer React Node and Node.js Developer I have strong experience with: ✔️ Admin panel, admin dashboard, and analytics dashboard development ✔️ Web Development and Custom Web Application development as a Full Stack Web Developer ✔️ AI Automation, AI workflows, AI Chatbot and AI Agent Development as an AI Developer ✔️ Artificial Intelligence, AI Development, and AI App Development across 35+ AI-powered projects ✔️ role-based access,payment flows, billing and subscription logic ✔️ AI-first approach using Cursor, Claude Code, Codex, and Lovable for up to 30% faster development as a Full Stack AI Engineer ✔️ User Authentication, user management systems, system administrator, and business operations workflows for 10K+ users As a Senior Full Stack Developer React Node and Full Stack AI SaaS Developer, I have strong experience with skills and technologies: ⚙️ JavaScript, TypeScript, Python, PHP ⚙️ React, Next.js, App Router, Vite, Vue.js, Angular, Redux, jQuery, HTML, HTML5, CSS, CSS 3, Canvas ⚙️ Node.js, NestJS, Express, WordPress ⚙️ Tailwind CSS, Material UI, Bootstrap, Shadcn/ui ⚙️ SQL, PostgreSQL, MySQL, MongoDB, Supabase, Firebase, Firestore, Redis, Prisma, RLS, Auth ⚙️ Amazon Web Services, AWS S3, AWS Lambda, Google Cloud Platform, Microsoft Azure, Vercel, Railway, DigitalOcean, Cloudflare, Docker, Kubernetes ⚙️ CI/CD (GitHub Actions, GitLab CI), Testing (Jest, Playwright), Monitoring (Sentry), Logging ⚙️ Git (GitHub, GitLab, Bitbucket) ⚙️ LLM, LangChain, RAG ⚙️ Zapier, n8n, Make, GoHighLevel, GHL ⚙️ HIPAA, SOC 2 ⚙️ Figma, Adobe XD, Sketch My achievements: - Improved page load speed by 35–55% as a Front End developer React and Next.js Developer through optimization - Increased database/API response speed by 3–5x as a Node.js backend developer and NestJS developer - Built 120+ API endpoints, microservices, and serverless functions as a MERN Stack developer and javascript developer - Managed 500K+ records with Database Architecture, Database Design, Prisma, and RLS - Supported 99.9% uptime with cloud deployment and production deployment - Reduced deployment failures by 30–40% through CI/CD and release automation - Handled migration with clear timeline, milestone planning, and long-term maintainability - Improved user experience, engagement, and visibility through dashboards used by 10K+ users As a Senior Full Stack Developer React Node and Node.js Developer I have deep experience in API integration: RESTful API, third-party REST API, webhooks, OpenAI API, Stripe API, Twilio API, Anthropic Claude API, ElevenLabs API, ChatGPT API, GraphQL API, WhatsApp business API, Google OAuth, Google Maps API, Gmail API, Google Calendar API and other Google APIs. As an Experienced Full Stack Developer React Node and Full Stack AI SaaS Developer I cover Full Stack Development, SaaS Development, Front-End Development, Back-End Development, and Software Development. As Full Stack Developer React Node and Full Stack Developer SaaS I experience in: Hospitality, Travel, Healthcare, Fitness, Ecommerce, FinTech, Logistics, Finance, Education, E-learning, Retail, HR, Business Services, Media & Entertainment, AI, SaaS marketing, Real Estate platform, etc. 💪 As CTO of Malevich Studio, I can also help you with: ✔️ Code audit, Software Architecture & Design, production delivery, debugging, and production bug fixing. ✔️ Mobile App Development: mobile app development from design to iOS and Android App Development. Covered by React Native developer, Mobile App developer, and flutter developer positions. ✔️ UX & UI / Web Design: UX Designer support with Figma, Responsive Design, Adaptive Web Design, Software Design, and Adobe Photoshop for 25–40% conversion improvement ✔️ WordPress developer and cms developer for mobile friendly website support ✔️ Python developer, Full Stack developer Laravel Vue, Java and Ruby on rails ✔️ ️Business workflow experience across hr generalist, accountant, cfo, bookkeeper, and communications workflows. 🚀 Click “Invite” if you need a Full Stack Developer React Node, Full Stack AI SaaS Developer, or Node.js Developer.

Hello✋. I am a result-driven Full Stack expert, leading a team of Full Stack engineers and UX/UI designers - QIT Software, a Team Augmentation company, that unites professional digital creators. We can build any web and mobile product, using the latest technologies of your choice. Either you need Web & Mobile apps, scripts, libraries, and browser extensions, we can do it. Technologies we work with: ✅ React, Vue, Angular, Node, PHP, Java, Python, .NET, C/C++, Golang, Swift, Kotlin, Flutter, Ionic, etc. ✅ SQL, MySQL, PostgreSQL, OracleDB, MongoDB, DynamoDB, MariaDB, SQLite, Fireabase, etc. ✅ AWS, Azure, Google Cloud, etc. ✅ ES6/7+, JavaScript, TypeScript ✅ Responsive CSS / CSS3 , LESS / SASS / SCSS ✅ Responsive frameworks - Bootstrap, Material UI, AntDesign, TailwindCSS ✅ GitHub, GitLab, Bitbucket ✅ Figma, Zeplin, InVision, Sketch ✅ JIRA, Trello, Asana ✅ TDD, Unit testing, E2E testing We work fast and our code is clean, w3c valid, semantic, and easy to maintain. ⚡ We take care of things and help companies to: - extend tech teams with talents, who will exclusively work on the project; - reach flexibility by scaling both up and down; - avoid painful expenses of in-house hiring and recruiting agencies; - avoid uncertainties about the right candidate; - launch a project to production without major issues and respect your deadlines; - save on in-house engineer team without saving on product quality; - sufficiently decrease time-to-market; - hit those KPIs and maximize ROI. 📍 By working with QIT Software you get: - a streamlined onboarding time for new team members; - an outstanding cost-quality ratio that will get more room for new ideas and features; - simplified tax system to the reduced staff; - stress release; we handle all the paperwork and cover all the desk costs; - a transparent direct line of communication; - full development process supervision of your remote team. 🚀 We help companies grow. Send me an invitation and I will get back to you shortly. We are looking forward to building something cool with you!

With over 27 years of professional experience, I specialize in building reliable, scalable, and user-focused digital solutions — from modern websites and e-commerce platforms to mobile apps and desktop applications. Notably, I spent 3 years working with the National Australia Bank (NAB), contributing to large-scale enterprise systems with a focus on performance, security, and long-term maintainability. This experience deepened my skills in working within highly regulated, mission-critical environments and strengthened my ability to deliver enterprise-grade solutions. 💡 My Development Philosophy: I stand by a simple principle: "Be responsible for 3x the development time." That means thorough testing, accountability, and free corrections for any bugs or issues within three times the original development duration. In addition, every project includes 1 year of free consulting, no matter the budget — ensuring your product thrives even after launch. 🤖 AI Chatbot & Automation Development Platforms & Frameworks: OpenAI (GPT-4/4o), Anthropic Claude, LangChain, Chatbot Types: Customer support, Lead qualification, FAQ bots, appointment booking Integrations: Website embed (live chat widget), WhatsApp, Telegram, Slack RAG & Knowledge Bases: Custom document ingestion, vector databases Specialties: Conversational flow design & prompt engineering Multi-turn context management Handoff to human agents Analytics & conversation logging 📱 Mobile App DevelopmentLanguages: Swift (iOS), Kotlin/Java (Android) Frameworks: React Native, Flutter Specialties: Clean mobile UI/UX RESTful API integration Cross-platform optimization Firebase & SQLite data management ⚙️ GoHighLevel (GHL) Development & Integration Full CRM setup, pipeline configuration, and workflow automation Custom funnel and landing page builds inside GHL AI-powered chatbot integration with GHL conversations Automation triggers: SMS, email, voicemail drops, and appointment reminders Sub-account management for agencies Webhook & API integration with third-party tools (Zapier, Make, custom APIs) White-label GHL setup for SaaS resellers Membership sites, course delivery, and form/survey builds 🌐 Web Development Expertise Frontend: React.js, Next.js, Angular.js, Vue.js HTML5, CSS3, JavaScript (ES6+) Backend & APIs: Node.js, Express.js, PHP (Laravel, CodeIgniter) .NET, ASP.NET, Django, Flask Databases: MySQL, PostgreSQL, MongoDB Other Skills: CMS Development, E-Commerce Platforms, Web Automation, Crawling & Scraping Mobile-Responsive UI/UX Design 💻 Windows Desktop Application Development Languages: Python, Java, C/C++ Domains: Computer Vision, AI/ML, Image Processing Tools: Excel VBA for Finance, Amibroker, IB Controller Design Patterns & Scalable Architectures