I am a Senior Full Stack Next.js & AI Developer with 11+ years of experience building scalable, high-performance, and production-ready web applications for startups, SaaS companies, and enterprise businesses. I specialize in modern JavaScript development using Next.js, React, Node.js, and TypeScript, focusing on building full stack applications that are fast, secure, and scalable. My expertise includes MERN stack development, SaaS architecture, REST APIs, and AI-powered web applications. My goal is to turn ideas into real, working digital products by combining strong system design, clean coding practices, and modern cloud technologies. ━━━━━━━━━━━━━━━━━━━━━━━ CORE EXPERTISE ━━━━━━━━━━━━━━━━━━━━━━━ I focus on building systems that are scalable, maintainable, and optimized for real-world business use. • Full Stack Next.js development (SSR, SSG, SEO optimized apps) • React.js frontend development with modern architecture • Node.js and Express.js backend systems • MERN stack application development • TypeScript-based scalable applications • REST API and GraphQL API development • SaaS application architecture and development • AI-powered application development using OpenAI ━━━━━━━━━━━━━━━━━━━━━━━ AI & OPENAI DEVELOPMENT ━━━━━━━━━━━━━━━━━━━━━━━ I build AI-driven applications using OpenAI and modern LLM technologies. I help businesses integrate AI into real products, not just prototypes. • ChatGPT integration into web applications • AI SaaS platforms and automation tools • AI chatbots and virtual assistants • Workflow automation using AI models • AI-powered dashboards and analytics systems ━━━━━━━━━━━━━━━━━━━━━━━ FULL STACK DEVELOPMENT ━━━━━━━━━━━━━━━━━━━━━━━ Frontend: • Next.js • React.js • TypeScript • Tailwind CSS • Material UI Backend: • Node.js • Express.js • Authentication (JWT, OAuth) • WebSockets for real-time apps • API development and integration Databases: • MongoDB • PostgreSQL • Firebase • Redis ━━━━━━━━━━━━━━━━━━━━━━━ SAAS & PRODUCT DEVELOPMENT ━━━━━━━━━━━━━━━━━━━━━━━ I build scalable SaaS platforms with multi-user architecture, subscription systems, and API-driven backend systems. • SaaS application development • Multi-tenant architecture design • Subscription and payment integration • Admin dashboards and analytics systems • Cloud-based deployment systems ━━━━━━━━━━━━━━━━━━━━━━━ CLOUD & DEPLOYMENT ━━━━━━━━━━━━━━━━━━━━━━━ • AWS (EC2, S3, Lambda) • Vercel deployment for Next.js • Docker containerization • CI/CD pipelines • Linux server management ━━━━━━━━━━━━━━━━━━━━━━━ PROJECT EXPERIENCE ━━━━━━━━━━━━━━━━━━━━━━━ I have delivered a wide range of applications including: • SaaS platforms • AI-powered applications • CRM and ERP systems • E-commerce applications • Healthcare systems • Real estate platforms • GPS tracking systems • Job portals • Analytics dashboards • Custom enterprise systems Each project is built with scalability, performance, and security as core principles. ━━━━━━━━━━━━━━━━━━━━━━━ WHY CLIENTS WORK WITH ME ━━━━━━━━━━━━━━━━━━━━━━━ • 9+ years of professional full stack experience • Strong expertise in Next.js, React, Node.js, and MERN stack • Deep understanding of SaaS and AI application architecture • Clean, scalable, and production-ready code • Strong communication and problem-solving ability • Focus on business outcomes and product success • Experience working with startups and enterprise teams ━━━━━━━━━━━━━━━━━━━━━━━ WHAT I CAN HELP YOU BUILD ━━━━━━━━━━━━━━━━━━━━━━━ • Full Stack Next.js applications • MERN stack web applications • SaaS platforms with scalable architecture • AI-powered applications using OpenAI • Custom dashboards and admin panels • REST API and backend systems • Real-time web applications • Cloud-based scalable platforms If you are looking for a Full Stack Next.js & AI Developer to build scalable SaaS applications and modern web platforms, feel free to connect. Thanks Mandeep

I build scalable, high-performance web applications that drive business results and keep users engaged. With 8+ years of full-stack development experience and 100% Job Success on Upwork (19 completed projects), I specialize in MEAN Stack development—Angular, Node.js, MongoDB, and PostgreSQL—creating robust applications that scale with your business. 🔧 Technical Expertise: - Frontend: Angular, TypeScript, responsive UI/UX implementation - Backend: Node.js, Express, RESTful APIs, microservices architecture - Databases: MongoDB, MySQL, PostgreSQL - Python: Data processing, automation, backend development - Testing: Unit testing, integration testing, quality assurance ✅ What Sets Me Apart: - Clear communication throughout the project lifecycle - Clean, well-documented code following best practices - Rigorous testing for bug-free applications - On-time delivery with attention to detail - Custom solutions tailored to your specific business needs Ready to discuss your project? Let's schedule a free consultation to explore how I can help achieve your goals.

I help businesses build scalable SaaS platforms, APIs, and enterprise web apps. With 15+ years of experience and 60+ successful projects, I specialize in .NET Core, C#, React, Node.js, and cloud solutions (AWS & Azure). Currently Top-Rated with 100% Job Success Score and $200k+ earned on Upwork. ✅ What I Deliver • Clean, maintainable architecture (microservices, serverless, multi-tenant SaaS) • Scalable web apps & APIs (REST, secure auth/SSO, payment integration) • Cloud-native deployments on Azure and AWS • Modern, responsive UIs with React, Next.js, Angular & Tailwind 🛠️ Tech Expertise (Shortlist) .NET Core, C#, ASP.NET, React, React Native, Angular, TypeScript, Node.js, SQL Server, PostgreSQL, MySQL, Azure Functions, AWS Lambda, Cosmos DB, Redis, IdentityServer, Stripe/PayPal, SendGrid, SignalR. 🎯 Why Clients Hire Me Enterprise-grade .NET + Azure expertise Startup-friendly React/Node.js + AWS solutions Strong communication and long-term client relationships I’m full-time available and ready to start immediately. Let’s connect for a quick call and discuss how I can help bring your project to life.

Building software is easy. Building software that scales with your business is where experience matters. I'm a Senior .NET Developer with 20+ years of experience designing and building scalable SaaS products, enterprise applications, and custom business software. As a Full Stack .NET Developer, I've helped startups, SMEs, and enterprise organizations transform complex business ideas into reliable, secure, and high-performance applications. Over the years, I've successfully delivered 375+ software projects using .NET, ASP.NET Core, C#, Angular, React, Azure, and modern cloud technologies. Whether you need a Senior .NET Developer to build a new SaaS platform, modernize a legacy .NET application, or extend an existing enterprise solution, I focus on delivering software that's scalable, maintainable, and built for long-term success. My expertise covers the complete software development lifecycle, from solution architecture and backend engineering to frontend development, cloud deployment, and ongoing product evolution. I've successfully delivered: • SaaS Platforms Development • Enterprise Web Applications Development • ERP & CRM Systems Development • AI-Powered Business Applications Development • Workflow Automation Solutions Development • Multi-Tenant Applications Development • REST APIs & Microservices Development • Healthcare Platforms Development • FinTech Applications Development • Logistics & Supply Chain Solutions Development • eCommerce Platforms Development • Internal Business Portals Development My core technology stack includes ASP.NET Core, .NET, C#, Entity Framework Core, SQL Server, PostgreSQL, Angular, React, Next.js, Azure, AWS, Docker, Redis, SignalR, Git, and CI/CD. Clients often come to me when they need to: • Build a SaaS product from scratch • Modernize a legacy .NET application • Develop secure REST APIs • Improve application performance • Scale an existing platform • Integrate third-party services • Build cloud-native applications on Azure • Add AI capabilities into existing products I believe writing code is only part of the job. Understanding the business, asking the right questions, and designing solutions that remain reliable as your product grows are equally important. I work closely with clients to make technical decisions that reduce future maintenance costs, improve scalability, and accelerate product delivery. Throughout my career, I've worked across healthcare, finance, manufacturing, logistics, hospitality, education, eCommerce, and AI-driven products. Whether joining an existing development team or leading a project from architecture to deployment, I focus on delivering software that creates long-term value. If you're looking for a Senior .NET Developer who combines deep technical expertise with business thinking, proactive communication, and a commitment to quality, I'd be happy to discuss your project and help you build a solution that's secure, scalable, and built to last.

Helping manufacturing and industrial teams build scalable CPQ, quoting, pricing automation, quote generation, proposal generation, and quote-to-cash systems that actually work in real sales operations. Experience working with CPQ platforms including Salesforce CPQ, Revenue Cloud, Oracle CPQ, Apttus CPQ, custom product configurators, and pricing automation solutions. Verticals: industrial equipment, HVAC & mechanical contractors, contract manufacturing, building materials, engineered products, custom assemblies, field services. Where I've helped: Spreadsheets → structured quoting & pricing automation Moved pricing logic, product configuration rules, pricing configuration, quote generation processes, and approval workflows out of Excel into scalable CPQ and quote management systems sales reps can actually use without breaking pricing. Homegrown tools → maintainable quote-to-cash systems Preserved existing business logic while removing single-developer dependency and improving maintainability, quoting workflows, sales operations visibility, CRM automation, and RevOps processes. Document builders (PandaDoc, Qwilr) → automated proposal generation Connected configuration, pricing engines, CRM data, Salesforce CRM, and ERP systems so quotes, proposals, SOWs, and sales documents generate automatically from rules instead of manual assembly. Heavy CPQ (Salesforce CPQ, Oracle CPQ) → right-sized implementation Simplified existing CPQ setups, pricing workflows, quote generation processes, product configuration models, and product configurators — or replaced overengineered systems with tools that better match how the sales team actually sells. Quote-to-cash workflow setup end-to-end Quotes → proposals → contracts → e-sign → sales orders → fulfillment Built full document automation flows with branded proposal generation, contract generation, approval routing, e- sign integration (DocuSign, PandaDoc, native e-sign), and downstream Sales Order / Purchase Order automation. Approved quotes flow directly into fulfillment without manual re-entry, duplicate data entry, pricing mismatches, or version control issues between sales and operations. Experience with: CPQ, Configure Price Quote (CPQ), Salesforce CPQ, Revenue Cloud, pricing automation, pricing configuration, proposal automation, sales quoting, quote generation, proposal generation, RevOps workflows, Quote to Cash (QTC), sales document automation, CRM automation, Salesforce CRM, Salesforce Sales Cloud, product configuration, approval workflows, contract management, ERP/CRM integration, API integration, subscription pricing, dynamic pricing, sales operations, and quote-to-cash processes. Not sure where to start? Send a quick overview of your current quoting process, pricing workflow, quote generation process, CPQ implementation, or proposal generation setup — I’ll take a look and share what I’d improve, no commitment required.

🚀 **TOP RATED PLUS | 100% Job Success | 8+ Years of Full-Stack Excellence and 🤖 AI / LLM / OCR Expertise** 💼 **$400K+ Earned | 25,000+ Hours | 5⭐ Client Satisfaction** --- ### 💡 About Me I'm a **Senior Full-Stack Developer** with 8+ years of hands-on highly experienced full stack developer with deep expertise in .NET, Python, AI/LLMs, and modern frameworks like Angular, React, and the MERN stack. I specialize in building clean, scalable applications and have a strong background in integrating AI, OCR, and document automation into real-world business systems. --- ### 🛠️ Tech Stack Expertise 🤖 AI / LLM / OCR Expertise 🧠 Built a custom background text removal tool in Python using OpenCV before ChatGPT was released 🤖 Integrated OpenAI GPT-3.5/4, DALL·E, and Whisper for invoice generation, image handling, and voice-to-text workflows 📚 OCR (Tesseract + OpenCV) for extracting and cleaning up text from scanned documents, invoices, and low-quality images 📄 PDF Reading & Parsing using Python libraries like PyMuPDF, pdfplumber, pdfminer.six — used in automation and AI-driven summarization tools 🧠 Implemented LangChain pipelines with vector databases (Pinecone, Chroma) for document Q&A and semantic search ✨ Smart prompt design, AI flow testing, and fine-tuned interactions for LLM-based apps **Frontend** - ✅ React.js / Next.js – SSR, SSG, API integration - ✅ Angular (v8–15) – Scalable SPAs - ✅ Vue.js 3 – Composition API, TypeScript - ✅ TypeScript, JavaScript (ES6+), HTML, CSS, Bootstrap - ✅ Responsive design – Mobile-first, cross-browser - ✅ State Management – Redux, Zustand, Context API **Backend** - 🧠 Node.js, Express.js – REST APIs, GraphQL - 🧠 .NET Core, .net 8, ASP.NET MVC – Enterprise apps - 🧠 C#, .NET MAUI – Cross-platform - 🧠 Blazor – WebAssembly/Server - 🧠 Microservices, WebAPI, WCF, Clean Architecture - 🧠 Integrate Open AI, Gemini, and DeepSeek, **Database & DevOps** - 💾 MongoDB, PostgreSQL, MySQL, SQL Server - 🔄 Redis – Caching - ☁️ AWS, Azure – EC2, Lambda, S3, App Services - 🐳 Docker, Kubernetes – Scalable deployments - 🔄 CI/CD – GitHub Actions, Azure DevOps --- ### 🎯 What I Offer - 🔍 Transparent, agile communication - 🧪 Test-Driven Development - 🔐 Security-first mindset (OWASP practices) - 📈 Optimized for speed, SEO, and scalability - 👨‍💼 Business-focused development strategy --- ### 📬 Let’s Work Together Need a reliable, senior-level full-stack dev? Let’s build something amazing. **I’m open to long-term & high-impact projects.** ------------------------------------------------------------------------------------------------------------- Keywords: Full-Stack Developer, React Developer, Node.js Expert, .NET Developer, MERN Stack, Angular Developer, Vue.js, TypeScript, JavaScript, MongoDB, SQL Server, AWS, Azure, API Development, E-Commerce Development, SaaS Development, Enterprise Applications, Web Application Development, Frontend Development, Backend Development, Database Design, Cloud Solutions, Performance Optimization

My UPWORK achievements : ✅Hours Logged 4790+ ✅Delivered jobs 17+ ✅JSS 99% with TOP RATED PLUS Badge. I have experience in building responsive web application using React.JS and familiar with its UI components ready to use with Supabase, Strapi, Node.js, AngularJS, Material UI etc. Also I can develop hybrid mobile apps using React Native platform. My expertise includes: = Nuclide | JAVAScript | Expo | Typescript = Sublime, My Text Editor | ESLint | Enzyme =>Sentry | Opensource frameworks - React => Navigation, Redux, Native base => Redux | Redux-Saga | Redux-Persist | React Navigation => Flexbox | Map and Geolocation => Firebase Cloud Messaging | Firebase Realtime Database | Firebase Analytics => Codepush (Hockey App & appcenter) => Social Media Login (Facebook & Google) => Ignite | Expo | CRNA Looking forward for the opportunity to work with potential clients all over the globe.

Hello, 🎯 I am a Professional AI-Native Full-Stack developer with over a 6 years of experience designing and deploying scalable enterprise solutionsf from the scratch. My journey is rooted in transforming complex business requirements into high-performance, AI-driven applications. Having successfully worked on large development teams through critical digital modernizations including custom SaaS platforms, AI-Native Automation systems, and Telehealth infrastructure - I bridge the gap between legacy reliability and modern AI-native velocity. 🛠 My Technical Fluency =========================================================================== ✅ Frontend: Angular, React, Angular Core, Angular 2+, Angular Universal, NGRX, Next, Remix ✅ Backend: ASP.NET Core, C#, ASP.NET, .NET Web API, Entity Framework, SignalR, TypeScript, ✅ Database: SQL Server, PostgreSQL, Redis, MongoDB, Supabase, AWS ✅ Cloud & DevOps: Microsoft Azure (Certified), Docker, Kubernetes, CI/CD pipelines, GitHub Actions. ✅ AI-Native & Vibe Coding Tools: Cursor, Claude, GitHub Copilot, Windsurf, Replit Agent, and custom LLM orchestration. ✅ Testing: xUnit, NUnit, Playwright, Jest, Cypress. 🌟 What I Am Born to Deliver =========================================================================== 👉 Systems designed for long-term maintainability, not just quick fixes. 👉 Translating ambiguous business goals into precise, actionable technical specifications. 👉 Delivering consistent, high-quality milestones through AI-accelerated workflows. 👉 Identifying bottlenecks and security vulnerabilities before they impact production. 👉 Maintaining clear, proactive communication that keeps stakeholders informed and confident. 👉 Building systems that handle growth from MVP to enterprise-grade traffic. 👉 Ensuring technology serves the specific functional needs of your unique business model. 🏆 My Priorities for Every Project =========================================================================== 🌟 Ensuring absolute reliability and security of your user information. 🌟 Aggressive reduction of latency to ensure a seamless end-user experience. 🌟 Prioritizing readability and modularity to reduce future technical debt. 🌟 Aligning every interface component with intuitive user behavior patterns. 🌟 Maintaining comprehensive, living documentation for seamless knowledge transfer. 🌟 Architecting infrastructure to optimize cloud resource utilization and reduce overhead. 🌟 Implementing industry-standard security protocols across every layer of the stack. 📌 Industries I Serve =========================================================================== 🚀 Solar Energy & Renewables 🚀 Manufacturing & Industrial Processing 🚀 Healthcare & Telehealth Infrastructure 🚀 E-commerce & Retail Giants 🚀 Legal Technology & Services 🚀 Architecture & Engineering Agencies 🚀 Financial Services & SaaS Startups 🚀 Education Technology (EdTech) 🚀 Enterprise CRM & Resource Planning 🤝 My Strategies to Cut Development Time =========================================================================== My development philosophy leverages an AI-native stack to accelerate the entire software lifecycle. I utilize Cursor and Claude to generate boilerplate, refactor complex modules, and automate unit test generation, which allows me to focus on architectural judgment rather than syntax. For backend management and documentation, I employ automated context-mapping tools that ensure all team members stay aligned without constant overhead. By integrating these systems into a unified workflow, I consistently reduce time-to-market by 50-70% while maintaining enterprise-grade quality. 🙂 I am currently accepting new partnerships for high-impact projects. "HIRE ME" or "INVITE ME" to your job post to discuss how we can accelerate your roadmap with AI-native engineering. Thanks & Regards, Kuldip S. 🙂

Most clients come to me with one of two problems: they're building something new and need it done right the first time, or they inherited a codebase that's slowing them down and need someone who can take ownership without hand-holding. I'm a full-stack engineer with production experience across the entire JS/TS ecosystem from React and Next.js on the frontend to NestJS, Node.js, and PostgreSQL on the backend, with React Native for mobile when the product needs it. What I've shipped in production: - SaaS platforms with multi-tenant architecture, RBAC, and Stripe billing - Fintech and data-heavy dashboards with complex state management (Redux) - REST and GraphQL APIs built with NestJS and Prisma, documented with Swagger - React Native apps deployed to both iOS and Android - Angular applications (including legacy upgrades to modern versions) - Server infrastructure on DigitalOcean and AWS not just code, full deployments Industries I've worked in: Finance, Healthcare, E-commerce, Education, Logistics I work best with startups and product teams that move fast, communicate clearly, and care about building things that scale not just things that ship. If that's you, let's talk. CORE STACK - Frontend: React, Next.js, Angular, TypeScript, Redux, Tailwind, SCSS - Backend: Node.js, NestJS, Python, FastAPI, GraphQL, REST APIs - Mobile: React Native, Expo - Database: PostgreSQL, MongoDB, MySQL, Prisma, TypeORM - Cloud: AWS (EC2, S3, RDS), DigitalOcean, Azure, Google Cloud - Integrations: Stripe, OAuth2, QuickBooks, Google APIs SKILLS TAGS React, Node.js, Next.js, NestJS, TypeScript, React Native, Angular, PostgreSQL, MongoDB, REST API, GraphQL, Prisma, Redux, Tailwind CSS, AWS, Full Stack Development, SaaS, API Integration, Stripe, Supabase

I am a senior full-stack web and mobile engineer with extensive experience building high-quality enterprise applications. My experiences range from building responsive websites that work well across browsers, and cross-platform mobile applications deployed by large companies, to creating complex single-page applications deployed to manage remote hardware installations in real-time and browser extensions that help your business extend its reach. I like working on projects with a team that cares about creating beautiful, intuitive user interfaces and experiences and robust systems that scale naturally. It's important to me to build long-term relationships with clients, so I am primarily looking for long-term projects, but also very open to handling short-term ones. My services include: Web Development Browser Extension Development (MV2 to MV3 migration) Browser Extension Migration from MV2 to MV3 Mobile Application Development (React Native & Ionic Framework) Backend Development (Laravel, NodeJS, NestJS, Spring Boot) Frontend Development (React, Angular, Qwik, Astro, Vue) I work with a very flexible time frame and am available to work solo, or with any existing engineers, you already have available. I look forward to hearing from you and working with you! Regards, Ikenna