🚀 Top 1% of Talent in 𝐀𝐈-𝐏𝐨𝐰𝐞𝐫𝐞𝐝 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 & Technology Leadership ⚡ Building 𝐀𝐈-𝐩𝐨𝐰𝐞𝐫𝐞𝐝 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐬, enterprise platforms, SaaS solutions, and scalable digital ecosystems 🔧 Using modern AI tools including Cursor, Claude Code, GitHub Copilot, GPT-4/GPT-4o, and Claude Sonnet/Opus 🤖 Experienced in AI agents, LLM integrations, AI automation, and multi-agent development systems 🚀 Accelerating development with 𝐀𝐈-𝐚𝐬𝐬𝐢𝐬𝐭𝐞𝐝 𝐞𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢, agentic coding, and automation-driven workflows 💻 𝐖𝐇𝐀𝐓 𝐘𝐎𝐔 𝐀𝐍𝐃 𝐘𝐎𝐔𝐑 𝐓𝐄𝐀𝐌 𝐆𝐄𝐓 Full-Stack Web Development Master's - high-performance web application development utilizing React, Node.js, and PHP to build scalable SaaS, FinTech, and Enterprise software. AI & Automation Systems Innovators - custom LLM applications, RAG pipelines, and intelligent workflow automations seamlessly integrated into your infrastructure. 📊 𝐀𝐂𝐇𝐈𝐄𝐕𝐄𝐌𝐄𝐍𝐓𝐒 𝐈𝐍 𝐍𝐔𝐌𝐁𝐄𝐑𝐒 (𝐁𝐔𝐒𝐈𝐍𝐄𝐒𝐒 & 𝐒𝐘𝐒𝐓𝐄𝐌 𝐈𝐌𝐏𝐀𝐂𝐓) 25+ years, 50,000+ engineering hours, 200+ successful launches delivered as a Senior Full Stack Developer and tech leader across global industries. ◾ Full-Stack Web Development for Enterprise & SaaS Platforms: Engineered and launched custom AI-powered SaaS platforms that scaled to millions of active users with 99.99% operational uptime. Accelerated product development cycles by 40% by deploying optimized React component libraries and agile workflows. Backend Architecture & API Engineering (Node.js & PHP): Reduced server infrastructure costs by 50% by migrating legacy monoliths into scalable microservices using Node.js, NestJS, and PHP. Optimized heavy data-processing pipelines, reducing database latency by 70% via tailored PostgreSQL, MongoDB, and MySQL schemas. ◾ AI App Development & Workflow Automation: Developed and integrated proprietary OpenAI GPT, Claude, and Gemini models into operational CRMs, increasing client workflow efficiency by 180%. Successfully deployed secure, HIPAA-compliant healthcare applications and high-security FinTech platforms with built-in Stripe / PayPal integrations. 🎯 𝐖𝐇𝐄𝐑𝐄 𝐖𝐄 𝐃𝐄𝐋𝐈𝐕𝐄𝐑 (𝐂𝐎𝐑𝐄 𝐄𝐗𝐏𝐄𝐑𝐓𝐈𝐒𝐄) As a Full Stack Developer & Solution Architect: I handle the full cycle of Full-Stack Web Development, defining technical roadmaps, designing scalable web applications, and ensuring bulletproof cyber-security protocols. As a Front-End Development Expert: Crafting pixel-perfect, highly responsive user interfaces using React, Next.js, TypeScript, Vue.js, and Angular to ensure maximum conversion rates and premium UX. As a Back-End Development Authority: Designing ultra-fast APIs and core services with Node.js (Express/NestJS), PHP, Python (FastAPI/Django), and modern Serverless Stack architectures. As a Cloud & DevOps Engineer: Implementing enterprise-grade cloud deployments via AWS, Google Cloud, and Azure, utilizing Docker, Kubernetes, and automated CI/CD pipelines. 🛠 𝐓𝐄𝐂𝐇 𝐒𝐓𝐀𝐂𝐊 & 𝐀𝐑𝐂𝐇𝐈𝐓𝐄𝐂𝐓𝐔𝐑𝐄 𝐄𝐂𝐎𝐒𝐘𝐒𝐓𝐄𝐌 Frontend Suite: React, Next.js, TypeScript, Tailwind CSS, Vue.js, Angular, Responsive Web Design. Backend Core: Node.js, NestJS, Express.js, PHP, Python, FastAPI, Django. Databases & Caching: PostgreSQL, MongoDB, MySQL, Redis. APIs & Global Integrations: REST APIs, GraphQL, Webhooks, Stripe, PayPal, Twilio, SendGrid. Cloud & DevOps Platform: AWS (Amazon Web Services), Google Cloud, Azure, Docker, Kubernetes, Jenkins, GitHub Actions CI/CD. 🧠 𝐃𝐄𝐄𝐏 𝐈𝐍𝐃𝐔𝐒𝐓𝐑𝐘 𝐄𝐗𝐏𝐄𝐑𝐈𝐄𝐍𝐂𝐄 AI & SaaS Startups: Rapid MVP development, RAG pipelines, AI chatbots, and predictive analytics tools. FinTech & E-commerce: High-load payment gateways, customized checkout solutions, compliance, and ledger systems. Healthcare & PropTech: Automated workflow systems, secure patient portals, CRM platforms, and real-time data visualization dashboards. Enterprise Automation: Heavy B2B platforms, marketplaces, and cross-platform integrations. ⚡ 𝐇𝐎𝐖 𝐖𝐄 𝐖𝐎𝐑𝐊 𝐓𝐎𝐆𝐄𝐓𝐇𝐄𝐑 Strategic Discovery: As a CTO, I align your business goals, success metrics, and timeline constraints before writing a single line of code. Architecture Blueprinting: We map out the core database schemas, React frontend components, and Node.js / PHP API flows to ensure long-term scalability. Agile Iteration: Backed by the senior engineering powerhouse at Onix-Systems, we deliver high-velocity sprints with predictable, production-ready releases every 2 weeks. DevOps & Launch: Secure deployment across AWS/GCP/Azure with ongoing tech partnership and proactive optimization based on product metrics. Looking for a Senior Full Stack Developer and a Full-Stack Web Development team to turn your complex concept into a world-class, scalable web platform? 𝐋𝐞𝐭’𝐬 𝐜𝐨𝐧𝐧𝐞𝐜𝐭! Send over your project brief, scope, or existing codebase notes, and I’ll provide a high-level strategic roadmap for your next big launch. ☎️

9+ years, 100+ clients, zero missed deadlines on Upwork. Most founders I work with have the same problem: they spend 4-6 months and $30,000+ building something before a single real user touches it. I fix that. My process, architecture review in day: 1, AI-accelerated development from day 2, client-testable build by week 2, means you validate with real users before you run out of runway. I build AI assisted Web & Mobile applications for startups, Saas founders, product companies, growing businesses and production-grade MVPs using React.js, Node.js, Next.js, Nest.js Python, Supabase, AI integrations (LLM, OpenAI, n8n Automation), AI tools (Cursor, Claude, Lovable), and MERN. I ship a working MVP in 14 days without the 6-month runway burn that most development projects cost you, and helping clients build products from scratch, improve existing systems, and support long-term growth. As a Full Stack developer building SaaS platforms, dashboards, admin panels, marketplaces, internal tools, booking systems, eCommerce solutions, and mobile apps. My work as a Full Stack developer includes frontend architecture, backend logic, third-party integrations, authentication flows, payment systems, and performance improvements. I focus on code that is clean, readable, and easy to maintain. I also have strong experience as a Full Stack developer with SSR and PWA development, helping applications load faster, perform better, and provide a smoother user experience. I build SEO-friendly Next.js applications, mobile solutions with React Native, and modern web products that work well across devices and screen sizes. Beyond coding, I can contribute as a Full Stack developer who understands team processes and product delivery. I have experience with code reviews, Git workflows, CI/CD pipelines, architecture planning, and development team support. In some projects, I work only as a Full Stack developer. In others, I also help with technical leadership, project planning, and improving development workflows. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Results from my Upwork work history: ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ -Healthcare startup, zero to 10,000 active users in 90 days (MERN + Firebase, full architecture). -AI Writing SaaS, built and deployed on AWS in 85 hours, 5-star review, client renewed contract. -Bank account connection MVP, Node.js + React, delivered in 28 days, 5-star review. -React Native TV app, Azure + Google Cloud integration, on time and on budget. -Properties web portal, 216 hours, delivered to full specification. ━━━━━━━━━━━━━━━━━━━ What I build for you: ━━━━━━━━━━━━━━━━━━━ -SaaS MVPs with subscription billing, auth, dashboards, ready for investors in 2 weeks -AI-powered apps: chatbots, RAG pipelines, document processing, -LLM integrations using OpenAI and LangChain -Python backends: FastAPI, Django, data pipelines, automation, web scraping at scale -React and Next.js frontends: dashboards, real-time apps, e-commerce, admin panels -React Native and Flutter mobile apps, submitted to App Store and Play Store n8n and Zapier workflow automation connecting your tools ━━━━━━━━━━━━━━━━━━ My Technical stack: ━━━━━━━━━━━━━━━━━━ -Frontend: React, Next.js, TypeScript, Tailwind CSS -Backend: Node.js, Python (FastAPI, Django), Supabase, PostgreSQL -AI: OpenAI API, LangChain, Claude API, RAG pipelines, vector databases -Mobile: React Native, Flutter -Cloud: AWS, Google Cloud, Azure, Vercel 💡 No product, no tech setup, no structure? I turn raw ideas into fully functional digital products designed, built, and deployed with clean UI, scalable architecture, and practical AI integration where it actually adds value. 📈 Existing system slowing you down? I don’t just “upgrade” it, I re-engineer it for performance, scalability, and clarity using modern stacks. If you are building a SaaS product, need AI integrated into an existing system, or want a Python backend that handles real production load, real users, scales under pressure, and is built correctly from day one, you are in the right place. send me the Invite. I will tell you honestly within a few hours what it will take and whether I am the right fit. ━━━━━━━━━━━━━━━━━━ Why Work With Me: ━━━━━━━━━━━━━━━━━━ ⭐ One expert handling everything, from design to development to deployment. No coordination issues, just full ownership and delivery. ⭐ Clear communication is my priority, not just code: -Daily 2-minute Loom or written updates -4-hour US/EU timezone overlap -Clean, documented, scalable code -Proactive updates, no chasing required ⭐ Focused on long-term partnerships, not one-off projects. I offer a free 30-minute project review before any contract. Honest technical feedback on your idea, no sales pitch. 𝗥𝗲𝗮𝗱𝘆 𝘁𝗼 𝘀𝘁𝗮𝗿𝘁? Check out my portfolio below or, ---------------------------Click green 'Invite' button and let us discuss your product.------------------ Thanks for visiting my profile. Looking forward to your idea/thoughts. Thanks, Mobeen Ikhtiyar.

👋 Hi there, I'm Maksym! As an expert Backend Developer and full stack developer, I bring 9+ years of commercial experience in software engineering, specializing in highly scalable, enterprise-grade backend development. Whether you are launching an intelligent ai backend, building a high-traffic platform, or looking to implement a robust backend nodejs architecture, I am the dedicated web developer and technical partner to help your company scale. My work as a Backend Developer strictly follows ISO 9001 and ISO 27001 security standards, ensuring enterprise-level reliability, data protection, and compliance from day one. With 180+ successful projects and 20,000+ engineering hours, I operate as a lead Backend Developer and python developer. I help businesses automate workflows, optimize cloud performance, and scale digital products utilizing node.js and modern cloud technologies. 🏆 Key Solutions & Results: – Scalable Engineering: 9+ years of experience as a Backend Developer building enterprise SaaS platforms, marketplaces, and AI-driven applications. – Proven Track Record: 180+ high-performance projects delivered across eCommerce, healthcare, fintech, and enterprise systems as a top-tier web developer. – Deep Expertise: 20,000+ engineering hours serving as a dedicated full stack developer and backend architecture specialist. – Global Delivery: Flawless execution across 40+ countries (including the US, UK, Western Europe, and Australia), delivering resilient backend development solutions. – AI-Driven Velocity: Product delivery speed increased by 60-70% using advanced, AI-assisted engineering workflows. – Database Optimization: Up to 60% performance improvement across any backend nodejs or Python ecosystem. – Infrastructure Efficiency: Cloud improvements engineered by an expert Backend Developer, enabling 45% more concurrent users with significantly reduced AWS costs. 📌 Core Specializations: 🤖 AI Systems & Automation • Custom LLM/RAG architectures and AI chatbots built by an expert python developer and Backend Developer. • Efficiency optimization and automated pipelines for your ai backend to cut manual operational costs by up to 70%. 💻 Custom Web Development • Rapid, AI-first MVP and SaaS platforms (React, node.js, NestJS) delivered by a skilled full stack developer. • Secure, ISO-compliant application architecture designed for modern, high-load backend development. ☁️ Backend Architecture & Cloud Infrastructure • High-performance AWS/Docker microservices built for complex, high-traffic ecosystems by a senior Backend Developer. • Database and query speed optimization (up to 60% improvements) managed by an experienced web developer. 📱 Mobile & Cross-Platform Syncing • React Native & Flutter apps seamlessly synced with your core cloud infrastructure. • Reduced latency via optimized backend nodejs pipelines and secure, AI-powered payment gateways. ✅ Why Work With Me? ✅ 60-70% faster delivery via AI-assisted engineering workflows. ✅ ISO 9001 & 27001 compliant development and security standards. ✅ 30% lower server costs optimized by an expert Backend Developer and node.js specialist. ✅ Advanced AI integration (GPT, Claude, LangChain) handled smoothly by an experienced full stack developer. ✅ 2-3 month MVP delivery to get your product to market and scaling quickly. Looking for a reliable Backend Developer, full stack developer, or python developer who can design scalable systems, build secure backend development architecture, and turn your ideas into production-ready products? Let’s connect! ☎️ Last updated: 25.06.2026

I’m a pragmatic full-stack developer with 5+ years of experience specializing in Python (Django, Flask), React, and production REST APIs. I ship reliable, scalable web apps and backend systems with clean PostgreSQL designs and repeatable deployment processes. I’ve led releases, implemented CI/CD workflows, and designed optimized PostgreSQL schemas for high-read systems. Recent contract work involved debugging large Django codebases, building APIs for dashboards, and delivering frontends for Elixir/Phoenix projects. I prioritize clean architecture, automated tests, and clear communication so you get reliable code and predictable delivery. My approach is API-first, testable, and focused on user experiences and robust functionality. My Full Tech Stack (high level) Frontend: React (hooks, component libraries), JavaScript (ES6+), HTML5, CSS3, Tailwind CSS, Bootstrap, SASS, responsive design. Backend: Python (Django, Flask, FastAPI) Elixir / Phoenix; RESTful API design, JWT/OAuth auth, WebSockets. Node.js, Express.js, PHP, Laravel. GraphQL, microservices, authentication systems Data & infra: PostgreSQL (schema design, indexing, migrations), MySQL, SQL performance tuning, ETL & data extraction scripts, Docker, CI/CD. AWS, Vercel, Render, Heroku RESULTS I DELIVERED As a Django expert, I supported a large production platform (Founders Network) for ~948 hours, resolving critical bugs, shipping system upgrades, and maintaining a 5.0 client rating. As an API & Backend expert, I built and shipped core APIs and backend workflows for apprent.com, taskeen.sa, and dietcity.sa, delivering secure subscription and booking flows, reliable background jobs, and maintainable, well-documented endpoints. As an Elixir / Phoenix & Frontend expert, I delivered UI work ahead of schedule for a Phoenix project. Clients praised my responsiveness and clarity in communication. If you want a partner to take your project from spec to production, audit and stabilize an existing system, or build a fast MVP, Let's Connect! Keywords: Full Stack Developer, Web Developer, MERN Stack Developer, MEAN Stack Developer, JavaScript Developer, React.js Developer, Node.js Developer, Next.js Developer, Angular Developer, Vue.js Developer, PHP Developer, Laravel Developer, Python Developer, Django Developer, API Development, REST API, GraphQL, MongoDB Developer, MySQL Developer, PostgreSQL Developer, AWS Developer, Cloud Developer, Frontend Developer, Backend Developer, Software Engineer, E-commerce Website Development, SaaS Developer

🔥I help startups and growing businesses build fast, scalable web and mobile apps using Python, Laravel, React Native, and React. I work as a full stack developer who can take a product from idea to production with clean code and predictable delivery. If you need a reliable web developer for modern UI work and a strong mobile app developer for iOS/Android builds, I can cover both while staying hands-on as a full stack developer focused on performance, UX, and maintainability. I’ve delivered solutions for founders who need speed now and stability later, and I communicate clearly at every step.🔥 🚀I also lead a web development team, Join.To.IT from Kyiv, Ukraine as co-founder and CEO. We have multiple Laravel developers (Senior PHP and Custom PHP MySQL), Python (Django), and JavaScript (React, Vue, React Native) developers. If your project needs a dedicated mobile app developer, we can staff that role quickly, while I stay involved as a full stack developer to keep architecture, delivery, and communication aligned. When the UI scope grows, a senior web developer can join the project while I remain the full stack developer responsible for end-to-end quality.🚀 I’m an experienced Laravel engineer, React engineer, Vue engineer, and React Native engineer with 14 years of production experience. As a full stack developer I can build backend APIs, admin panels, dashboards, and customer-facing apps, and as a web developer I pay attention to UI details that improve conversion and retention. I’ve completed a wide range of successful projects, from MVPs to large systems with long-term maintenance and continuous improvements. My skills: React React Native Software Architecture & Design Laravel Python Full-Stack Development API Development JavaScript PHP Web Application Development Node.js AWS Development MySQL Mobile App Development Django WordPress HTML5 Tailwind CSS Web Design API Integration Stack of technologies we use: ✅ HTML/CSS, Bootstrap, Tailwind ✅ JavaScript (React, Vue, Node.js, Express, AdonisJS, Nuxt) ✅ React Native for cross-platform mobile delivery ✅ API integrations (Stripe, PayPal, Twilio, TextMagic, Xero, DocuSign, Google Maps, Meta APIs, and more) ✅ API development (Laravel, Node/Express, Firebase, Python/Django, Go, REST, GraphQL) ✅ PWA (Progressive Web App) ✅ Databases: MySQL, PostgreSQL, MongoDB, DynamoDB, Elasticsearch ✅ Infrastructure: AWS, DigitalOcean, Firebase, Supabase ✅ DevOps and administration: LAMP, CentOS, Ubuntu As a full stack developer, I connect the front end, back end, and infrastructure so releases are smooth. When the scope includes native-like UX, I can collaborate with a mobile app developer without slowing down the API roadmap, and a web developer can refine UI flows while we keep the backend stable. You can hire me as a full stack developer for full ownership, or extend the team and keep me as the full stack developer leading architecture and delivery. If timelines are tight, add a mobile app developer to parallelize mobile features, and add a web developer to accelerate dashboards and front-end work. Our team has already worked in such industries as: ✅ Marketplace ✅ E-commerce ✅ Travel and Hospitality ✅ Custom ERP (Enterprise Resource Planning) ✅ ChatGPT integration (LLM model in your website front end) ✅ Automotive (car inspection, automotive ERP, car sharing, rental, selling) ✅ Social media (Tinder-like networks, short video platforms, communities) ✅ Sales (CRM systems for sales teams, retail, hospitals, sales departments) ✅ Sport (gym management systems, trainer platforms, fitness apps, club portals) ✅ Legal (document automation, AI-assisted legal processing) ✅ Healthcare (clinic management, booking, mental health software) ✅ Education (LMS, automated training, coaching marketplaces) ✅ Finance (fintech platforms, investment platforms, bank API integrations, calculators) ✅ Manufacturing (shop floor management and automation) ✅ Human resources (HRM systems) ✅ Digital marketing (Meta, Facebook/Instagram, TikTok, Google APIs, analytics) In our work history you’ll find successful products built with Laravel, PHP, JavaScript, MySQL, React, Vue, WordPress development, Web Development, Full Stack development and React Native, plus multiple systems built with Python (Django, Flask, FastAPI). I also use LLM capabilities and AI APIs (including OpenAI integrations) when they genuinely improve the product experience. We have 65 senior developers across PHP, JavaScript, MySQL, Python, Go, and Node.js. As a full stack developer, I can jump into an existing codebase, stabilize releases, fix bottlenecks, and plan the next iterations. Don't hesitate to get in touch with me for further details and fruitful work. Best regards, Oleksandr CEO, JoinToIT

🚀 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝟏𝟎+ 𝐘𝐞𝐚𝐫𝐬 𝐨𝐟 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 | 𝟑𝟎+ 𝐒𝐮𝐜𝐜𝐞𝐬𝐬𝐟𝐮𝐥 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬 I don’t just write code – 𝐈 𝐬𝐨𝐥𝐯𝐞 𝐩𝐫𝐨𝐛𝐥𝐞𝐦𝐬, 𝐨𝐩𝐭𝐢𝐦𝐢𝐳𝐞 𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞, 𝐚𝐧𝐝 𝐞𝐧𝐬𝐮𝐫𝐞 𝐞𝐯𝐞𝐫𝐲𝐭𝐡𝐢𝐧𝐠 𝐰𝐨𝐫𝐤𝐬 𝐟𝐥𝐚𝐰𝐥𝐞𝐬𝐬𝐥𝐲. I thrive on challenges and enjoy building apps that are not only powerful but also intuitive and fun to use. Let’s create something outstanding together! To kick things off, I offer a 𝐅𝐑𝐄𝐄 𝟒𝟎-𝐦𝐢𝐧𝐮𝐭𝐞 𝐭𝐞𝐜𝐡 𝐜𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐭𝐢𝐨𝐧 where we can explore your project goals and define the best path forward. ✅ 𝐁𝐚𝐜𝐤𝐞𝐧𝐝: ◈ PHP: Laravel, Yii2, Symfony, Zend, CakePHP, CodeIgniter ◈ Node.js: Express, Nest.js ◈ Python: Django ◈ Databases: MySQL, PostgreSQL, DynamoDB, MongoDB ◈ API Development: REST, GraphQL, WebSockets ◈ Cloud: AWS, Google Cloud, Azure, Docker ✅ 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝: ◈ JavaScript: React.js, Next.js, Nuxt.js, Vue.js, Angular.js ◈ TypeScript, UI Libraries: Redux, Material UI, Bootstrap, Tailwind ✅ 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤: ◈ Web3 and OpenAI integrations ◈ API & Payment Gateway integrations ✅ 𝐂𝐌𝐒 & 𝐏𝐖𝐀: ◈ WordPress: Custom themes & plugins, Elementor ◈ Progressive Web App (PWA) development ✅ 𝐃𝐞𝐬𝐤𝐭𝐨𝐩: ◈ Python, JavaScript/TypeScript 𝐑𝐞𝐜𝐞𝐧𝐭 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬: ➤ PuzzleTrip – Aggregator for rental and tour services (cars, yachts, custom trips) ➤ Grand Time – Web3 platform connecting businesses and freelancers globally ➤ ArmRoom – Dating app for connecting people across cultures I'm here to help tackle technical challenges and build reliable, high-impact digital products. Let’s make it happen!

If you are looking not for just a developer, but a growing specialist with 6 years experience in Web Development - let's get started! I have a deep understanding of how to be a worthy developer by maintaining and upgrading my skills, following "up to date" trends in the web-development and growing my knowledge! My technical skills: - JavaScript: React JS, Next JS, Node.JS (Nest JS / Express); - Python: Flask, FastAPI, Django, REST framework, Bots creation; - SASS, SCSS, jQuery, HTML5, Gulp/Grunt/Webpack; - Bootstrap, Material UI, Shopify Polaris; - CMS: Shopify, WordPress; - API development and integration (Payment API's [PayPal, Stripe, Klarna, Adyen, iDEAL, etc.], FaceBook API, Instagram API); - REST.API / GraphQL.API - GitHub, GitLab, BitBucket. I worked with: - E-Commerce; - Social Networks; - Healthcare; - Shopify Application; - Blog; - Custom Solution / AI. I am quite passionate with new challenges and ready to help you create worthy products while maintaining a mature professional cooperation! As always, I focus on customer needs and ready to help with your ideas! Let's give it a shot to blow a breath of life to your upcoming success! Please, feel free to ask any questions! Looking forward to our future cooperation!

With 10 years of experience as a Senior AI Engineer and Full Stack Developer, I specialize in building AI products from MVPs to production-ready solutions. As a Senior AI Engineer, I have successfully delivered 50+ projects, including AI agents, Intelligent systems, AI chatbots, SaaS platforms, MVPs, and AI-powered applications designed to scale operations, reduce costs, and save time. What I Build: AI SaaS & MVPs: As a results-driven AI Developer and Senior AI Engineer, I build MVPs including AI SaaS products in 15 days delivering scalable architecture, multi-tenant systems, dashboards, subscription and billing integrations, API-driven, AI services, and high-performance backend systems ensuring fast launches and confident scaling. AI Chatbots & Intelligent Assistants: As an experienced AI Developer and Senior AI Engineer, I develop advanced AI chatbot systems that automate customer support, enhance internal operations, integrate with CRMs, APIs, and databases, and deliver accurate, context-aware responses using your business data. AI Agents & Automation Systems: I build AI agents and automation systems as a Senior AI Engineer and AI Developer, enabling multi-step reasoning, API integrations, workflow automation, data analysis, and intelligent task execution with minimal human input. RAG Systems & Knowledge AI: As an AI Developer and Senior AI Engineer, I create high-performance RAG systems that connect AI models with documents, PDFs, CRMs, databases, and APIs focused on accurate retrieval, reduced hallucinations, and scalable vector search. Workflow Automation with AI: I deliver AI automation solutions as a Senior AI Engineer and AI Developer, integrating LLMs into existing systems for CRM automation, lead processing, data extraction, reporting, and cross-platform workflow optimization. AI Integration: Custom AI integration using GPT-4, Claude, Llama, and DeepSeek connected to SaaS products, internal tools, and business platforms via LangChain, LangGraph, RAG, Pinecone, and ChromaDB. Every AI integration I deliver is context-aware, scalable, and production-ready. My Commitments: -100% On-Time & Successful Delivery: Successfully completed 50+ projects on time and on schedule. -Full Ownership: I take complete responsibility for the project from planning to deployment. -Clear Communication: Clear milestones, regular updates, transparent communication at every stage. -Fast Response Time: Most messages are answered within minutes to keep momentum moving. -Low Cost & Smart Execution: I use the right AI tools and workflows to reduce cost and accelerate. -24/7 Availability: Available when needed to resolve issues and keep the project on track. Get a Free Consultation: If you have an idea in mind, Just send me a message for a free consultation. I’ll walk you through the best approach to build it efficiently. My TechStack & Tools -Python, FastAPI, Node.js, Express, Nest.js, Laravel -React.js, Next.js, Vue.js, TypeScript -PostgreSQL, MongoDB, MySQL, Redis, Firebase, Supabase -AWS (S3), Google Cloud, Docker, CI/CD -Pinecone, FAISS, ChromaDB, Weaviate -LangChain, LangGraph, LlamaIndex, RAG -Vapi, Twilio, ElevenLabs, Deepgram, SignalWire -OpenAI (GPT-4), Claude, LLaMA, Mistral, DeepSeek, GoogleDialogflow, Hugging Face -n8n, Make (Integromat), Zapier, GoHighLevel (GHL),HubSpot, Mailchimp, OneSignal, Stripe AI integration expert, AI chatbot developer, AI agents development, generative AI developer, LLM integration, RAG pipeline development, AI SaaS development, AI automation, LangChain developer, GPT API integration, vector database integration, AI workflow automation, AI MVP development, enterprise AI solutions, AI customer support chatbots, AI knowledge base assistants, AI automation systems, AI-powered SaaS products, Document processing AI tools, Internal AI copilots, Senior Full Stack Developer, AI Developer, Senior AI Engineer & AI Developer

Are you tired of developers who deliver messy, undocumented code and then disappear? I build backend systems and AI-powered applications that are clean, scalable, and maintainable — backed by a 100% Job Success Score, 70+ delivered projects, and $80K+ earned on Upwork. ⚡ MY CORE STACK ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🔧 Backend → Python (Django, DRF, FastAPI, Flask), Node.js, TypeScript, REST APIs, GraphQL, Celery, WebSockets, Microservices 🤖 AI / LLM → LangChain, OpenAI API, GPT-4, RAG pipelines, Agent workflows, LLM-powered automation 🎨 Frontend → React.js, Next.js, React Native (iOS + Android), Angular, JavaScript, HTML/CSS 📱 Mobile → React Native — iOS & Android 🗄️ Database → PostgreSQL, MySQL, MongoDB — schema design & optimization ☁️ DevOps/Cloud → AWS (EC2, S3, Lambda), Docker, CI/CD, Git 🚀 WHAT I'VE SHIPPED IN PRODUCTION ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ▸ Artha — Multi-service booking platform with real-time slot management and provider calendars ▸ Bancreach — Commercial loan marketplace with WebSocket live chat and admin panel ▸ Zeepo — Multi-role insurtech app with Celery background tasks and third-party lead sync ▸ Celloux — Crypto trading platform with payment API integration ▸ Wikireviews — Full-stack review platform serving real users at scale 💡 I work across the full stack but my strongest value is backend architecture — building systems that are clean, documented, and maintainable long after the project ends. 🤝 If you're building a SaaS product, integrating AI into your workflow, or need a backend developer who communicates clearly and ships on time — let's talk. 📌 Open to fixed-price projects, hourly contracts, and long-term partnerships. 👉 Tell me what you're building — I'll tell you exactly how I'd approach it.

As a Senior Full-Stack and AI Engineer with 14+ years of experience, I specialize in designing and building scalable web applications, cloud platforms, AI-powered automation systems, and high-performance APIs. I have extensive experience developing enterprise SaaS platforms, CRM/ERP systems, fintech applications, and AI-driven automation solutions using modern technologies such as Python, Node.js, Golang, Java, .NET, Ruby on Rails, React.js, and Next.js. I also work extensively with AI and automation frameworks, building intelligent workflows and LLM-powered applications using tools like LangChain, LangGraph, HuggingFace models, and n8n automation pipelines. Core Technical Expertise AI & Automation LLM integrations (OpenAI, Claude, HuggingFace) LangChain & LangGraph AI workflows Automation pipelines using n8n AI-powered SaaS platforms and content automation systems AI chatbots and intelligent agents Backend Development Python (FastAPI, Flask, Django) Node.js (REST APIs & microservices) Golang microservices Java (Spring Boot) .NET / ASP.NET Core Ruby on Rails Frontend Development React.js and Next.js TypeScript and modern JavaScript frameworks Angular Responsive UI development using Tailwind and Bootstrap Mobile Development React Native cross-platform mobile applications Blockchain Development Solidity smart contracts Ethereum and Web3.js integrations NFT and decentralized applications Cloud & DevOps AWS, Azure, and Google Cloud Docker, CI/CD pipelines Scalable microservices architecture Why Clients Hire Me ✔ 14+ years of professional development experience ✔ Expertise across AI, cloud, full-stack, and blockchain technologies ✔ Proven track record building enterprise SaaS platforms and scalable systems ✔ Strong focus on clean architecture, performance, and maintainable code ✔ Clear communication and reliable project delivery If you are looking for a senior engineer who can build scalable applications, AI-powered solutions, or modern SaaS platforms, I would be happy to discuss your project. Let's connect and bring your idea to life. Thanks, Hitesh Kanwar