Searching for Senior Full Stack developer for your SaaS platform❓I’m a Senior Full Stack Developer React Node Next.js with 5+ years of experience building and scaling SaaS platforms, dashboards, API integrations and web applications improvements. 🌟 My key highlights: 🏆 Senior Full Stack Developer React Node Next.js 🏆 Full Stack SaaS Developer who can take full ownership on your project 🏆 Delivered 30+ SaaS platforms and web applications from MVP to production 🏆 Strong problem-solving skills with experience working in fast-paced startup environments 🏆 Strong communication skills in English for clear collaboration with teams and clients 💡 What I can bring as Full Stack Developer: 🗸 Full Stack development (React Node, MERN Stack) 🗸 SaaS platform developer for architecture and scaling 🗸 REST API and GraphQL API development 🗸 API integrations (payments, analytics, third-party services) 🗸 Performance optimization and system stability 🗸 Clean, maintainable code and long-term product thinking 🗸 Development of internal tools and workflow platforms for business processes 🗸 Integrations with messaging systems (WhatsApp, Twilio) and email services 🚀 Relevant product experience: As a Full Stack developer SaaS oriented, I focus on development SaaS platforms and web applications across: 🗸 Logistics & Supply Chain – Complex tracking and data systems. 🗸 Fintech – Secure Fintech platforms and financial apps. 🗸 E-commerce – Marketplaces, online shops, and trading platforms. 🗸 Real Estate – Real Estate Platform, Marketplaces and advanced booking systems. 🗸 Travel – Booking platforms with map integrations (Google Maps, Mapbox). 🗸 Education – E-Learning platforms, LMS, and online courses. ⚙️ Tech stack ⚙️ As a Full Stack Developer and SaaS Developer, I work with: ⚙️ Languages – JavaScript, TypeScript, Python, PHP ⚙️ Front-End Development – React.js, Next.js, Redux, HTML5, CSS3, Canvas ⚙️ Back-End Development – Node.js, NestJS, Express, WordPress ⚙️ UI & Styling – Tailwind CSS, Material UI, Bootstrap, shadcn/ui, SCSS, SASS, LESS ⚙️ API Integration – RESTful APIs, GraphQL APIs, Webhooks, OpenAI API, Claude API, Stripe API ⚙️ Databases – PostgreSQL, MySQL, MongoDB, Supabase, Firebase ⚙️ Cloud & Infrastructure – AWS S3, AWS Lambda, Google Cloud, Microsoft Azure, Vercel, DigitalOcean, Docker, Kubernetes ⚙️ DevOps & Quality – CI/CD (GitHub Actions, GitLab CI), Testing (Jest, Playwright), Monitoring (Sentry), Logging ⚙️ Version Control – Git (GitHub, GitLab, Bitbucket) ⚙️ Design Tools – Figma, Adobe XD, Sketch As a Full Stack developer React Node and SaaS Developer I have a strong understanding of SaaS development in both front-end and back-end technologies and have experience in developing scalable web applications, SaaS platforms, SaaS dashboards, analytics systems, Progressive Web Applications (PWA), authentication systems (OAuth, JWT), and API-driven solutions. I support products through early MVP development, feature expansion, and long-term iteration across web and SaaS applications. As a result oriented Full Stack developer React Node and SaaS developer at Si Development, I’ve collaborated with different amount of teams and developers, as: Python developer, full stack developer laravel vue, wordpress developer, Ruby on Rails developer, mobile app developer, cms developer, react native developer, ux designer, CTO, Senior Web Developer, Software developer, MERN Stack developer, another React Developer and Front End developer React, etc. As a Full Stack developer, I supported growth initiatives in SaaS marketing, SaaS sales, digital marketing, and Google Ads, managing communications across teams and markets including Nigeria, and coordinating with roles such as Graphic Designer, Virtual Assistant, Personal Stylist, while contributing to mobile app design. I also use AI-assisted development tools (Cursor, Codex, Claude Code) to improve development speed and code quality. If you’re looking for a Full Stack Developer React Node or SaaS Developer who understands how to build and evolve real products, I’d be happy to discuss your project goals and technical requirements.

⭐️⭐️⭐️⭐️⭐️ Top 1% Expert-Vetted Web Developer on Upwork 📍 No short-term projects 📞 Kick-off with the team is mandatory 🧨 Available for a quick project start ★ Top-100 Service Provider by Clutch ★ $500M+ Raised by clients ★ 99+ International Awards ★ 15+ years of expertise (NOKIA, OPERA, OPPO, UDEMY, AUTH0, etc.) 👋 Hi, I'm Sergii! I'm a senior web developer, full stack developer Next.js specialist, and front end developer with 10+ years of experience building SaaS platforms, eCommerce products, AI applications, and custom web solutions. Over the years, I've helped launch 100+ products using React, React NextJS, Next.js, and modern JavaScript frameworks. My work combines technical architecture, front-end engineering, and product thinking to create fast, scalable applications that deliver measurable business results. 🏆 Why Clients Work With Me ✔ 100+ React, React Next, and Next.js projects delivered ✔ 50+ fully launched products across SaaS, AI, fintech, and eCommerce ✔ $500M+ raised by companies I've supported ✔ 20+ Upwork clients and long-term partnerships ✔ 30+ Shopify and Shopify Webflow projects completed ✔ Mobile and web products used by thousands of daily users ✔ Extensive experience as a front end developer React and front end Next specialist 🚀 Core Expertise 📌 Front-End Development As a front end developer, front end web developer, and front end designer, I've built interfaces for startups, enterprise products, and high-growth SaaS companies. Using React, React NextJS, Next.js, TypeScript, Tailwind, and modern UI frameworks, I create scalable applications focused on performance, maintainability, and user experience. My front-end work has helped companies reduce load times, improve conversion rates, and accelerate product delivery through reusable component systems and scalable architecture. 📌 React & Next.js Development I've delivered 100+ projects using React, React Next, and Next.js, including SaaS platforms, dashboards, marketplaces, AI tools, and enterprise applications. As a front end developer React specialist and full stack developer Next expert, I focus on building high-performance applications with clean architecture, SSR, SEO optimization, and long-term scalability. 📌 Mobile App Development Beyond web applications, I have extensive experience in mobile app development using React Native. I've helped teams launch mobile apps for healthcare, fintech, logistics, education, and SaaS businesses. As a mobile app developer, I work across the entire product lifecycle—from mobile app design and architecture to deployment and optimization. My experience includes React Native Mobile applications, cross-platform development, and React Native Full Stack solutions connected to modern APIs and cloud infrastructure. 📌 Shopify & Webflow Solutions I've worked on 30+ Shopify and Shopify Webflow projects, helping brands improve storefront performance, customer experience, and conversion rates. As a Shopify front end developer, I build custom themes, Shopify Hydrogen storefronts, and modern eCommerce experiences using Liquid, React, and headless architectures. I also collaborate closely with Webflow teams, helping businesses bridge design and development through scalable Webflow implementations and front-end optimization. 📌 AI & Python Integrations As a front end developer Python specialist, I've worked on AI-powered products featuring OpenAI integrations, vector search, chat interfaces, workflow automation, and custom dashboards. My experience includes Python APIs, automation workflows, AI assistants, and modern SaaS products powered by LLM technologies. 💻 Technology Stack React • React Next • React NextJS • Next.js • React Native • React Native Mobile • React Native Full Stack TypeScript • JavaScript • Node.js • NestJS • Express • Fastify Shopify • Shopify Webflow • Webflow • WordPress MongoDB • PostgreSQL • MySQL AWS • Google Cloud • Azure Tailwind • Storybook • GraphQL • Redux 🔥 What Clients Hire Me For ✔ Front End Developer React projects ✔ Full Stack Developer Next.js applications ✔ React Native Mobile App Development ✔ Shopify Front End Developer services ✔ Webflow and Shopify Webflow implementations ✔ Front End Designer and UI implementation ✔ Front End Developer Python integrations ✔ SaaS platforms and enterprise applications ✔ Mobile App Design and development ✔ Custom Web Development solutions 💎 Why Work With Me I combine the expertise of a web developer, front end developer, mobile app developer, and full stack developer into one delivery process. Clients work with me because I don't just build features—I help create products that scale, perform, and generate business value. Whether you need a front end developer React specialist, Shopify front end developer, React Native full stack engineer, mobile app developer, Webflow expert, or full stack developer Next.js partner, I'd be happy to discuss your project.

I have 7 years of experience in dyanmics crm. I have worked on multiple freelance projects. I have good knowledge on power platform. I have worked on client side scripting and worked on oob customisations.

🔥 Engineer that saves your time, ships fast, and pays off 🔥 🏆 10+ years of experience 🔥 60+ successfully delivered projects 💸 products generating $8,5M+ in revenue ⭐ Web app with 20,000+ active users I'm a Full Stack React Developer with 10+ years of production experience, delivering 60+ projects across SaaS, marketplaces, logistics, e-commerce, and Ops, with systems supporting 20K+ active users, 99.9% uptime, and millions of monthly requests. As a Senior React Developer and Frontend React, I shipped 50+ commercial products as a Full Stack Developer React Node, helping clients reach $8,2M+ revenue and reduce time-to-market by 30–40%. I work daily as a Full Stack React Developer and Frontend React Next.js developer, combining UI performance and backend architecture as a Full Stack Developer React Node and Frontend React developer, improving LCP/TTI by 2–3x, increasing conversion rates by 25–35%, and scaling apps to 100K+ MAU. My background as a Frontend React developer and Full Stack Developer React Node enables full ownership from UX design to scaling and post-launch optimisation. As a Full Stack React Developer, I’ve built SaaS platforms using Supabase and Supabase Postgres, implementing auth, RLS, and real-time systems handling 100K–300K events/day. I’ve used Supabase in 9+ production apps with Postgres, react next.js, react js, cutting backend costs by 40%, infra overhead by 35%, and delivery time by 30%. I'm a Full Stack Developer React Node with deep experience as a full stack developer Node.js developer , building APIs, real-time services, and dashboards processing 5M+ requests/month. As a Full Stack Developer React Node, I delivered CRM, logistics, and warehouse dashboards, plus B2C marketplaces with Stripe payments, automating 50–70% of manual workflows. On the frontend, I’ve worked the last 8+ years as Frontend React js and front end developer react. As frontend developer react, frontend react developer I focus on performance and conversion, reducing load times by 60%, bounce rates by 25%, and increasing engagement by 30–45%. I collaborate as a ux designer to turn UI improvements into measurable revenue growth. I am also a react native developer, shipping 5+ cross-platform apps for iOS and Android, supporting 50K+ active users, 99.8% uptime, and peak loads during live events. These apps powered logistics and energy-tech startups reaching £7M annual revenue. I’ve also delivered projects using Astro, Svelte, Python. As a web developer, full stack developer, and full stack react developer, I’ve built MERN stack systems as full stack developer react node, react redux, java react, and scalable APIs, deployed across multiple regions. I collaborated with distributed teams, including react developers Filipinos, reducing release cycles by 25% and production bugs by 30%. Payments and monetization are core strengths: I implemented stripe billing, subscriptions, and marketplaces generating $4,7M+ revenue as a frontend react developer, reducing checkout drop-off by 20–30% and increasing AOV by 15–25%. I build SEO-friendly SSR apps with react next.js and next.js firebase, achieving 90+ Lighthouse scores and 2–3x organic traffic growth using modern javascript optimizations as a Full Stack Developer React Node. Recent work includes large-scale dashboards, marketplaces, and PWAs built as a Full Stack React Developer, Frontend React, and Full Stack Developer React Node, using Claude Code for fast launches and custom React systems for core logic, saving teams 300–500 hours/month. My focus is always on clean architecture, measurable impact, and long-term maintainability. If you’re looking for a Full Stack React Developer, react js developer, react web developer, or node developer who delivers measurable results, I provide predictable delivery, business-focused decisions, and long-term ownership. 🛠 Additional Technical expertise - Launched 4+ apps as a mobile app developer / front end developer html, reaching 50K+ installs and 4.9 avg rating. - Deep experience with Supabase RLS policy and Supabase Auth across 7+ systems and 20+ roles. - Experience as a Python developer and senior full stack developer react node with Supabase on data-heavy platforms. - 30+ projects as full stack developer react node. - Full Stack Development work and 1200+ hours as full stack developer react node - LLM & AI integration, OpenAI, Gemini, Chat GPT, building AI-powered applications that reduced manual work by 30–50% as a frontend react next.js developer and node full stack developer - 8+ years as react js next js and 5+ years as react nextjs developer - 6+ years as a frontend next.js react developer - 5+ years as node.js developer, and backend nodejs engineer - 10 projects as a headless CMS front end developer and as front end developer angular. Let's begin the collaboration with Full stack React Developer by clicking "Invite" or "Hire" on the top right

Hi 👋 I’m a Senior AI Full-Stack Engineer with 12+ years of experience building scalable SaaS platforms, AI-powered applications, workflow automation systems, and enterprise-grade web solutions. My expertise combines modern AI technologies (LLMs, AI agents, automation, RAG systems) with strong backend engineering using Laravel, Node.js, Java (Spring Boot), Supabase, and cloud-native architectures on AWS. I specialize in building intelligent systems that automate workflows, integrate with APIs, process documents, and scale reliably for real-world business operations. If you’re looking for an engineer who understands both modern AI systems and production-grade software architecture, let’s connect. 🏆 Credibility & Trust ✅ Top-Rated Plus Freelancer on Upwork ✅ 100% Job Success Score ✅ 2,500+ hours delivered as an individual developer ✅ Consistently near 5-star client feedback ✅ Long-term support & clear communication 🛠 Core Expertise • AI Agents & Workflow Automation • LLM Applications using OpenAI, Claude & Gemini APIs • RAG Systems & AI Knowledge Bases • MCP & AI Tool Integrations • Laravel, Node.js & NestJS Backend Development • Java (Spring Boot) APIs & Microservices • Python AI/ML Integrations • Supabase, Firebase & Real-Time Systems • REST APIs & Third-Party Integrations • AWS – EC2, RDS, S3, Lambda, CI/CD & scalable deployments • MySQL, PostgreSQL & Vector Databases • Secure authentication & role-based systems • Performance optimization & scalable architecture 🚀 Solutions I Build • AI-powered SaaS platforms • Workflow automation & AI agent systems • Event & marketplace platforms • Healthcare & business applications • ERP & admin dashboard systems • AI document processing pipelines • API-driven products & integrations • Multi-tenant enterprise applications • Real-time applications with Supabase & WebSockets 🔑 Working Style I build systems with a strong focus on scalability, maintainability, security, and long-term product stability. My approach combines clean architecture with practical AI implementation to create solutions that are reliable, fast, and ready to scale.

⭐⭐⭐⭐⭐ “Qasim is an exceptionally skilled developer who delivers high-quality work and with great precision. Highly recommended.” I help startups, SaaS founders, and businesses build scalable, secure and production-ready web applications using Laravel, PHP, and modern AI technologies. With 8+ years of experience and 55+ successful projects, I specialize in building: SaaS platforms AI-powered applications Custom web apps & MVPs REST APIs & backend systems 𝘾𝙤𝙧𝙚 𝙏𝙚𝙘𝙝𝙣𝙞𝙘𝙖𝙡 𝙀𝙭𝙥𝙚𝙧𝙩𝙞𝙨𝙚: ✔️ Frontend: HTML, CSS, JavaScript, Bootstrap, React, Next.js, Vue.js ✔ Backend: PHP, Laravel,Node.js, REST APIs ✔ Database: MySQL, PostgreSQL, MongoDB, Firebase ✔️ APIs & Integrations: Social Login, Google APIs, Payment Gateways ✔️ Project Tools: Jira, Slack, Trello ✔️ Cloud & Deployment: AWS, Vercel, Netlify ✔️Version Control: GitHub, GitLab 𝑨𝑰 𝑨𝒖𝒕𝒐𝒎𝒂𝒕𝒊𝒐𝒏 & 𝑨𝒈𝒆𝒏𝒕 𝑺𝒐𝒍𝒖𝒕𝒊𝒐𝒏𝒔: • AI Lead Generation & CRM Automation Build smart automated pipelines using n8n, Make .com, and Zapier to capture, enrich, and sync leads directly into CRMs like GoHighLevel and HubSpot • AI Chatbot & Voice Agent Development Create intelligent chatbots and voice agents for customer support, lead generation, and appointment booking using Voiceflow, VAPI, and OpenAI • AI Agent & GPT-Powered Applications Develop GPT-4 powered AI agents that can research data, answer questions, enrich information, and automate complex business workflows • AI Social Media Automation Build fully automated content systems where AI generates captions, schedules posts, and tracks engagement across platforms ​​𝙎𝙖𝙖𝙎, 𝘼𝙄 & 𝙒𝙚𝙗 𝘼𝙥𝙥𝙡𝙞𝙘𝙖𝙩𝙞𝙤𝙣𝙨 𝙄 𝙝𝙖𝙫𝙚 𝙙𝙚𝙫𝙚𝙡𝙤𝙥𝙚𝙙: ✔ E-commerce website ✔ MVP development ✔ Health & Fitness website ✔ Travel & online Booking website ✔ Educational website ✔ Food delivery website ✔ cleaner websites like dry cleaner ✔ Real estate Website ✔ personal Portfolios websites ✔ AI SaaS Websites ✔ Custom AI chatbots ✔ AI Agents & automation systems 𝗠𝘆 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗣𝗿𝗼𝗰𝗲𝘀𝘀: Requirement Analysis UI/UX (Figma if needed) Backend (Laravel / APIs / AI Logic) Testing & Optimization Deployment & Support Client satisfaction is one of my main priorities. I'm looking forward to working with you guys. Feel free to have a short call or meeting (zoom/meet) with me to dive into your vision to turn it into a reality. Thanks:)

Engineering the Future of Digital Products: Where AI Meets Scalability. Hello! I’m Gaurang, a Senior Full-Stack Architect with over 11 years of experience in transforming complex business problems into high-performance digital solutions. With 𝟓𝟎𝟎+ successful launches, I specialize in building "𝐀𝐈-𝐅𝐢𝐫𝐬𝐭" products that don't just work; they lead the market. In 2026, a "good" app isn't enough. You need a system that is 𝐀𝐈-𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐞𝐝, 𝐜𝐥𝐨𝐮𝐝-𝐧𝐚𝐭𝐢𝐯𝐞, 𝐚𝐧𝐝 𝐡𝐲𝐩𝐞𝐫-𝐫𝐞𝐬𝐩𝐨𝐧𝐬𝐢𝐯𝐞. Whether you are a startup looking for an MVP or an enterprise modernizing a Legacy SaaS, I provide the technical vision and execution to get you there. ✅𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐈 𝐄𝐥𝐞𝐯𝐚𝐭𝐞: I bring deep domain expertise to ensure your product meets industry-specific compliance and user expectations: ▫️𝐅𝐢𝐧𝐓𝐞𝐜𝐡 & 𝐍𝐞𝐨𝐛𝐚𝐧𝐤𝐢𝐧𝐠: Secure payment gateways, ledger systems, and fraud detection. ▫️𝐇𝐞𝐚𝐥𝐭𝐡𝐜𝐚𝐫𝐞 (𝐇𝐞𝐚𝐥𝐭𝐡𝐓𝐞𝐜𝐡): HIPAA-compliant apps, patient portals, and wearable integrations. ▫️𝐄-𝐜𝐨𝐦𝐦𝐞𝐫𝐜𝐞 & 𝐑𝐞𝐭𝐚𝐢𝐥: High-traffic marketplaces, AI-driven recommendation engines. ▫️𝐀𝐈 & 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧: Custom LLM integrations, autonomous agents, and workflow bots. ▫️𝐋𝐨𝐠𝐢𝐬𝐭𝐢𝐜𝐬 & 𝐒𝐮𝐩𝐩𝐥𝐲 𝐂𝐡𝐚𝐢𝐧: Real-time tracking, fleet management, and IoT dashboards. ▫️𝐄𝐝𝐓𝐞𝐜𝐡: LMS platforms, interactive streaming, and gamified learning. ▫️𝐑𝐞𝐚𝐥 𝐄𝐬𝐭𝐚𝐭𝐞: PropTech solutions, 360° virtual tours, and CRM automation. ✅𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤: 𝐌𝐨𝐛𝐢𝐥𝐞 𝐄𝐜𝐨𝐬𝐲𝐬𝐭𝐞𝐦 (𝐂𝐫𝐨𝐬𝐬-𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦 & 𝐍𝐚𝐭𝐢𝐯𝐞) ▫️𝐅𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬: Flutter, FlutterFlow, React Native. ▫️𝐍𝐚𝐭𝐢𝐯𝐞: Android (Kotlin), iOS (Swift). ▫️𝐂𝐚𝐩𝐚𝐛𝐢𝐥𝐢𝐭𝐢𝐞𝐬: Biometrics, Geofencing, Offline-first sync, In-app purchases. 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐖𝐞𝐛 & 𝐒𝐚𝐚𝐒 ▫️𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝: React.js (Next.js), Vue.js, Tailwind CSS, TypeScript. ▫️𝐁𝐚𝐜𝐤𝐞𝐧𝐝: Node.js (Express/NestJS), PHP (Laravel), Python (Django/FastAPI). ▫️𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞: Microservices, Serverless, Monolith-to-Cloud migrations. 𝐀𝐈 & 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐭 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧𝐬 ▫️𝐆𝐞𝐧𝐞𝐫𝐚𝐭𝐢𝐯𝐞 𝐀𝐈: OpenAI (GPT-4o), Anthropic (Claude), Gemini integration. ▫️𝐋𝐋𝐌𝐎𝐩𝐬: Vector Databases (Pinecone, Weaviate), RAG (Retrieval-Augmented Generation). ▫️𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧: Make. com, Zapier, Custom Python scripting. 𝐃𝐚𝐭𝐚 & 𝐂𝐥𝐨𝐮𝐝 𝐈𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞 ▫️𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬: MongoDB, PostgreSQL, Firebase, MySQL, Redis. ▫️𝐃𝐞𝐯𝐎𝐩𝐬: AWS (EC2, S3, Lambda), Google Cloud, Docker, Kubernetes, CI/CD. ✅𝐅𝐫𝐨𝐦 ‘𝐖𝐡𝐚𝐭 𝐈𝐟’ 𝐭𝐨 ‘𝐈 𝐃𝐢𝐝 𝐈𝐭': ▫️𝟓-𝐒𝐭𝐚𝐫 𝐓𝐫𝐚𝐜𝐤 𝐑𝐞𝐜𝐨𝐫𝐝: A decade of "100% Satisfied" feedback from global clients. ▫️𝐒𝐭𝐫𝐚𝐭𝐞𝐠𝐲 + 𝐂𝐨𝐝𝐞: I don’t just write code; I advise on user retention and technical ROI. ▫️𝐒𝐩𝐞𝐞𝐝 𝐭𝐨 𝐌𝐚𝐫𝐤𝐞𝐭: Expert in "Scrappy" MVP development to get you to your first round of funding or first 1000 users fast. ▫️𝐂𝐥𝐞𝐚𝐧 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞: My code is modular, documented, and built to be handed off to a 50-person team later. ▫️𝐀𝐠𝐢𝐥𝐞 𝐏𝐚𝐫𝐭𝐧𝐞𝐫𝐬𝐡𝐢𝐩: Daily updates via Slack/Jira, weekly demos, and transparent Loom walkthroughs. ✅High-Value Services: ▫️𝐌𝐕𝐏 𝐟𝐨𝐫 𝐒𝐭𝐚𝐫𝐭𝐮𝐩𝐬: From Figma design to a live, scalable product in weeks. ▫️𝐋𝐞𝐠𝐚𝐜𝐲 𝐌𝐨𝐝𝐞𝐫𝐧𝐢𝐳𝐚𝐭𝐢𝐨𝐧: Refactoring old PHP/Java systems into modern MERN/Cloud stacks. ▫️𝐀𝐈 𝐅𝐞𝐚𝐭𝐮𝐫𝐞 𝐈𝐧𝐣𝐞𝐜𝐭𝐢𝐨𝐧: Adding smart search, chatbots, or predictive analytics to existing apps. ▫️𝐏𝐫𝐨𝐝𝐮𝐜𝐭 𝐌𝐚𝐢𝐧𝐭𝐞𝐧𝐚𝐧𝐜𝐞: Ongoing support, security patches, and performance optimization. Ready to build something legendary? The digital landscape moves fast. Let's make sure your project is built to last. Click the "Hire" or "Message" button to schedule a 15-minute discovery call. Let’s turn your vision into a high-revenue reality!

Senior Full-Stack Developer | .NET + React Specialist Built full-stack web applications for healthcare, fintech, and SaaS clients. Work with teams that need someone who can handle both architecture and hands-on coding without constant hand-holding. Recent Projects: Healthcare clinic management system — Patient scheduling, EHR integration, HIPAA-compliant messaging. PostgreSQL + .NET Core backend, React frontend. 3 clinics live, handling 200+ appointments/day. Fintech payment platform — Multi-currency transactions, Stripe integration, automated reconciliation. Handles $50K+ daily volume. Built with .NET microservices + Next.js. SaaS marketplace — Multi-tenant architecture, role-based access, usage-based billing. MongoDB + .NET backend, React frontend. 2,000+ active users. What I Build: Full-stack applications where backend and frontend actually work together. API design, database architecture, user authentication, payment integrations, third-party APIs, deployment pipelines. Not interested in small fixes or WordPress tweaks. Best fit for projects $5K+ that need 2-6 months of focused work. Tech Stack: Backend: .NET Core, C#, ASP.NET, Node.js, Entity Framework Frontend: React, Next.js, TypeScript, Angular Databases: SQL Server, PostgreSQL, MongoDB Cloud: Azure, AWS (deployment, CI/CD, monitoring) Integrations: Stripe, Twilio, QuickBooks, SendGrid, Google APIs Domains with Real Experience: Healthcare: HIPAA compliance, patient portals, appointment systems, EHR integrations Fintech: Payment processing, PCI compliance, transaction reconciliation SaaS: Multi-tenancy, subscription billing, role-based access E-commerce: Inventory management, order processing, shipping integrations How I Work: Available 30+ hours/week. Overlap with US timezones (EST/PST). Daily updates via Slack/email. Code reviews before merging. No surprises mid-project. Work through Step2gen Technologies (70+ developer team, India-based). You get me as your dedicated developer plus backup support if needed. Looking for: Projects $5K-$50K range 2-6 month duration Clear requirements or willingness to define them together Clients who value getting it done right over getting it done cheap If you need someone to start this week and actually finish what they start, let's talk.

Results-driven Software Engineer with 12+ years of experience designing, developing, and delivering scalable enterprise applications, web platforms, APIs, and automation solutions. Strong expertise in .NET Core, C#, Entity Framework, Angular, SQL Server, Oracle, PostgreSQL, Python, and FastAPI, with hands-on experience building secure, high-performance applications across multiple industries. Recently focused on AI-powered solutions, including AI agents, multi-agent workflows, Claude Code-based development, process automation, content generation systems, and intelligent business workflows. Experienced in designing RESTful APIs, integrating third-party services, optimizing database performance, and deploying applications on AWS EC2.

‼️FREE consultation is provided! (See below) 🏅 7000+ Hours Completed on Upwork 🏅 All 5 Star Ratings and Stellar Reviews 🏆 100% Satisfied clients 🏆 100% Recommendation Ratio 🏆 100% Job Success Rate 🏆 Top Rated Plus at Upwork 🧩🧩🧩 *** FREE consultation service: I am more than happy to share my years of experience in helping clients build web/mobile applications from the ground up, including but not limited to, setting up MVP, choosing tech stack, scoping out practical plan/timeline, estimating budget, and more. Please do not hesitate to contact me for this free service and we can together turn your idea into reality.*** I have an excellent level of expertise in: ✔️ WebRTC; ✔️ React Native / Mobile app development; ✔️ React / Angular / PHP ✔️ Javascript / Jquery / TypeScript ✔️ Databases (MySQL, PostgreSQL, Realm Db, MongoDB, Sql Server) ✔️ Firebase / Firestore ✔️ NodeJS ✔️ Chrome Extension Development; ✔️ Devops; ✔️ E-commerce; ✔️ Custom CRM; ✔️ Custom ERP (Enterprise Resource Planning);