I help startups and growing businesses design, build, and scale SaaS products—from MVP to production. With 14+ years of experience, I work as both a Fractional CTO and Senior Full-Stack Developer, helping founders make the right technical decisions while delivering high-quality software. What I can help you with ✔ SaaS Architecture & Solution Design ✔ MVP Planning & Product Roadmaps ✔ Full-Stack Web & Mobile Application Development ✔ High-Performance MySQL Database Design & Optimization ✔ REST API Development (PHP/Laravel) ✔ Admin Dashboards, CRM, ERP & Reporting Systems ✔ Third-Party API Integrations (Shopify, Facebook, Instagram, YouTube, TikTok, Google Maps/GPS, Payment Gateways) ✔ Legacy System Modernization & Performance Optimization ✔ AI Integrations, Automation Scripts & Prompt Engineering Technical Expertise PHP, Laravel MySQL Database Architecture JavaScript, jQuery REST APIs HTML5, CSS3, Bootstrap React / React Native AWS Git API Integrations SaaS Platform Development Why clients hire me ************ • Think like a CTO—not just a developer • Build scalable, maintainable architectures • Optimize databases and backend performance • Communicate clearly with founders and teams • Deliver reliable, production-ready solutions Whether you're building a new SaaS platform, logistics system, marketplace, CRM, or modernizing an existing application, I can help you architect, develop, and scale it efficiently. Let's discuss your project and identify the best technical approach to bring your product to market successfully.

☑️ 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 ✅ 10+ 𝐘𝐞𝐚𝐫𝐬 𝐨𝐟 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧c ✅ ~ 5000 𝐇𝐨𝐮𝐫𝐬 𝐋𝐨𝐠𝐠𝐞𝐝 𝐨𝐧 𝐔𝐩𝐰𝐨𝐫𝐤 ✅𝟏𝟎𝟎% 𝐂𝐥𝐢𝐞𝐧𝐭 𝐑𝐞𝐜𝐨𝐦𝐦𝐞𝐧𝐝𝐚𝐭𝐢𝐨𝐧 Hi, I'm Anant. I specialize in building secure, high-performing, and scalable applications that solve real business problems. With over 10 years of experience, including work for TCS, T-Mobile, and CBA, I bridge the gap between complex business logic and elegant technical architecture. (𝐌𝐲 𝐓𝐚𝐠𝐥𝐢𝐧𝐞: High-Performance .NET Architect | Transforming Business Vision into Scalable Code) 💡 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐒𝐭𝐚𝐜𝐤: 📌 Backend: .NET Core/8/9, C#, Web APIs, SignalR, Clean Architecture, Microservices 📌 Frontend: ASP .NET MVC, Razor Pages, Blazor, Angular, React, CSS3, Bootstrap, JavaScript/TypeScript. 📌 Database: SQL Server, Entity Framework Core 📌 Tools: Git, Docker, xUnit, Moq 📌 Deployment: Azure, AWS, IIS, CI/CD Pipelines 📌 Legacy migrations (Web Forms / older .NET → modern .NET/Blazor/Full Stack) 💡 𝐖𝐡𝐲 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞? 🔝 Top 1% expertise in .NET & C# development 🤝 Excellent communication & availability ⚡ Delivered 30+ .NET projects 📈 Enterprise-grade quality, startup-level speed 🏗 Experience building SaaS, multi-tenant systems, enterprise apps, and modern APIs ⏳ Fast turnaround with proactive updates 🎯 Always updating my skills to stay ahead in the ever-evolving tech landscape. 💡 𝐖𝐡𝐚𝐭 𝐈 𝐃𝐨 (𝐀𝐧𝐝 𝐄𝐧𝐣𝐨𝐲 𝐒𝐨𝐥𝐯𝐢𝐧𝐠) 📌 Full-Stack Development → Build and maintain responsive applications using ASP .NET Core with Blazor, Angular, and React. 📌 Legacy Migration → Seamlessly migrate Web Forms/MVC to modern NET + React/Angular/Blazor giving your users a 2026 experience. 📌 Performance Engineering → Fix outdated frontend bottlenecks and optimize SQL queries for high data loads. 📌 API Development → I build RESTful APIs that are actually Restful ~ secure, documented & easy for your mobile or web teams to use. 💡 𝐖𝐡𝐨 𝐈'𝐦 𝐀 𝐆𝐨𝐨𝐝 𝐅𝐢𝐭 𝐅𝐨𝐫 🎯 Teams needing a true Full-Stack lead who can jump between C# and modern JavaScript/TypeScript frameworks. 🎯 Companies with existing .NET applications that require a frontend refresh (Angular/React) or a full stack migration. 🎯 Projects requiring long-term enhancements and a sense of ownership from the developer. 🎯 Clients seeking reliable, predictable delivery over cheap, short-term labor. 💡 𝐀𝐯𝐚𝐢𝐥𝐚𝐛𝐢𝐥𝐢𝐭𝐲 🟢 Available for part-time or full-time contracts 🟢 Reliable US/EU timezone overlap 💡 Whether you need a custom web application, a scalable backend, or a dynamic frontend, I’m here to bring your vision to life. Let’s discuss your project and create something extraordinary! ✉️ Message me your project details, I’ll reply in < 1 hour with a clear plan and honest recommendations. Let’s build something innovative together!💡 Thanks!! 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀 Full-Stack .NET Developer, Backend NET Developer, ASP .NET Core, C#, ASP .NET MVC, Web API, RESTful APIs, Microservices, Clean Architecture, SignalR, Blazor Server, Blazor WebAssembly, Razor Pages, Angular, React, Responsive Web Design, HTML5, CSS3, JavaScript, Bootstrap, SQL Server, Query Optimization, Stored Procedures, Database Optimization, Entity Framework Core, Database Migration, Legacy System Migration, Web Forms Migration, Performance Optimization, Azure, Azure DevOps, AWS, CI/CD Pipelines, Docker, IIS, Agile Development

Hi, I’m Rahul Chhabra – a passionate and results-driven Full Stack Developer with over 12 years of hands-on experience building dynamic, scalable, and secure web applications. I specialize in: ⚙️ Backend Development: Laravel, Node.js, Express.js 🎨 Frontend Development: Vue.js, React.js, Tailwind CSS, Bootstrap 🔌 API Development & Integration: RESTful APIs, 3rd-party services (Stripe, PayPal, Firebase, Twilio, etc.) 🛠 Database Design & Optimization: MySQL, MongoDB, PostgreSQL ☁️ Deployment & DevOps: VPS, cPanel, AWS, DigitalOcean, Docker What sets me apart: 🧠 Strong problem-solving skills with clean, maintainable code 🔄 Clear communication and on-time delivery 🧩 Full-cycle development: from planning and architecture to launch and support Whether you're starting from scratch, need help with an existing project, or want to integrate third-party services — I can help turn your vision into a working solution. 📩 Let’s connect and bring your project to life!

𝗜'𝗺 𝗵𝗲𝗿𝗲 𝘁𝗼 𝗵𝗲𝗹𝗽 𝘆𝗼𝘂 𝗮𝗰𝗵𝗶𝗲𝘃𝗲 𝘆𝗼𝘂𝗿 𝗴𝗼𝗮𝗹𝘀 🎯 𝗮𝗻𝗱 𝘁𝗮𝗸𝗲 𝘆𝗼𝘂𝗿 𝗮𝗽𝗽 𝘁𝗼 𝘁𝗵𝗲 𝗳𝗼𝗿𝗲𝗳𝗿𝗼𝗻𝘁 𝗼𝗳 𝘆𝗼𝘂𝗿 𝗶𝗻𝗱𝘂𝘀𝘁𝗿𝘆 🚀. I'll lead you through the development process, ensuring outstanding outcomes. My specialization is in crafting premier web platforms utilizing React.js,Next.JS,Node.js 🌐. No matter if you are a startup, a large enterprise, or an individual, I am here to help you develop exceptional solutions. Should you need a reliable developer or a technical ally for your business, you can count on my support 🤝. • Full Stack Developer 7+ 𝐲𝐞𝐚𝐫𝐬 💻 • Delivery in a timely manner. Focused on results instead of hours ⏰ • Clear, friendly and professional communication 📞 • Full-time availbility 🌟 𝗙𝗼𝗿 𝘁𝗵𝗲 𝗹𝗮𝘀𝘁 𝘆𝗲𝗮𝗿𝘀, 𝗜 𝗵𝗮𝘃𝗲 𝗯𝗲𝗲𝗻 𝗽𝗿𝗼𝘃𝗶𝗱𝗶𝗻𝗴 𝘁𝗵𝗲 𝗳𝗼𝗹𝗹𝗼𝘄𝗶𝗻𝗴 𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀: ✅ Software development/Web app development/Mobile development ✅ Pixel Perfect HTML / Mui (Material UI) / Tailwind CSS ✅ Converting your designs into a fully responsive website. ✅ API development and integration ✅ Use best practice to make the highest performance on your web site ✅ Make SEO setting / choose correct framework for your website ✅ Releasing a product from MVP till final version ✅ Landing Page development ✅ Regular project support My main tech skills: ☑️ JavaScript - React.JS, Next.JS, TypeScript, Redux, Node.JS, Gatsby.js, React Native ☑️ Styles - CSS, Material UI, Tailwind CSS, Chakra UI ☑️ APIs - Rest API, JWT, GraphQL ☑️ Databases - PostgreSQL, MongoDB, MySQL, SQL server ☑️ Cloud Services - Amazon Web Services (AWS), DigitalOcean, S3 ☑️ Architectures - Serverless, Domain Driven, Event Driven Architecture, Monolithic ☑️ Others - CI/CD, Websockets, GIT Based on the feedback I've received from my clients it is evident that I consistently deliver results. I am deeply passionate, about developing performing applications and websites that go above and beyond expectations.

I help startups fix, build, and scale SaaS products and AI-powered systems — fast, stable, and production-ready. If your product exists but feels slow, buggy, or hard to scale, I can step in and improve it without breaking what already works. 🧠 MAIN PROFILE Most clients don’t need another developer. They need someone who can understand a real system, identify what’s broken or missing, and ship solutions that actually work in production. That’s where I focus. ⸻ 🎯 WHAT I DO * Build and scale SaaS platforms (dashboards, internal tools, workflows) * Improve existing systems (performance, bugs, architecture) * Design backend APIs and database structures * Integrate AI workflows (OpenAI, Claude) * Implement payments, auth, and third-party integrations ⸻ ⚙️ STACK * React / Next.js / TypeScript * Node.js / Express * Supabase / PostgreSQL * Stripe / API integrations * AI tools (Claude, OpenAI) ⸻ 🔥 SELECTED WORK EasierNow (AI Task Platform) Improving and stabilizing an MVP, fixing production issues, and preparing it for scale. OurTribe (Social Platform) Built backend and workflows, extending an initial frontend into a full system. Logi360 (Logistics SaaS) Built dashboards and backend logic for operational tracking. QureHome (SaaS Platform) Developed backend, booking flows, and API-driven features. ⸻ 💡 HOW I WORK * I take ownership — not just tasks * I focus on clean, scalable systems * I use AI tools to move faster, but I validate everything * I communicate clearly and deliver reliably ⸻ 🎯 WHEN I’M A GOOD FIT * You already have a product (MVP or live) * You need to improve performance or stability * You want to ship features faster without breaking things * You need someone who can work independently If you’re building a SaaS product or AI system and need someone who can step in, understand quickly, and deliver reliably — I can help.

🏆 Top Rated Shopify Developer | Shopify Plus Expert | Custom Themes, Apps & CRO Looking for a Shopify expert who can build, customize, and optimize your store to increase sales? I help eCommerce brands, startups, and established businesses create high-converting Shopify stores that are fast, scalable, and designed for growth. With 10+ years of experience and 170+ successful Shopify projects completed, I deliver solutions that improve user experience, boost conversions, and support long-term business success. My Shopify Expertise: ✅ Shopify Store Setup & Configuration ✅ Shopify 2.0 & Shopify Plus Development ✅ Custom Shopify Theme Development ✅ Shopify Theme Customization (Free & Premium Themes) ✅ Shopify App Development (Public & Private Apps) ✅ Shopify API & Third-Party Integrations ✅ Shopify Speed & Performance Optimization ✅ Conversion Rate Optimization (CRO) ✅ Shopify Store Migration (WooCommerce, Magento, BigCommerce, Wix) ✅ Figma, Adobe XD & PSD to Shopify ✅ Landing Pages & Product Page Customization ✅ Shopify Subscription Setup (Recharge, Bold, Skio) ✅ Shopify Store Maintenance & Technical Support Technical Skills: • Shopify Liquid • JavaScript, jQuery • React.js, Node.js • PHP, Laravel • HTML5, CSS3, Tailwind CSS • REST & GraphQL APIs • Shopify Storefront API • Git & Version Control Why Clients Work With Me: ✔ 170+ Shopify Projects Successfully Delivered ✔ 10+ Years of Web Development Experience ✔ Shopify Plus & Advanced Customization Specialist ✔ Mobile-First & Conversion-Focused Development ✔ Clean, Scalable & Maintainable Code ✔ Fast Communication & Reliable Delivery ✔ Long-Term Support & Maintenance I can help you with: 🔹 Building a new Shopify store from scratch 🔹 Redesigning an existing Shopify store 🔹 Custom theme development and customization 🔹 Shopify app development and integrations 🔹 Store speed optimization and performance improvements 🔹 Shopify Plus custom solutions 🔹 Ongoing maintenance and technical support Whether you need a complete Shopify store, custom functionality, advanced integrations, or conversion-focused improvements, I can help you achieve your business goals. 📩 Send me an invitation, and let's discuss how we can grow your Shopify business. Keywords: Shopify Developer | Shopify Expert | Shopify Plus Developer | Shopify Designer | Shopify Store Development | Shopify Theme Developer | Shopify App Developer | Shopify Customization | Shopify Liquid Expert | Shopify Speed Optimization | Shopify API Integration | Figma to Shopify | Ecommerce Developer

Elevate Your Digital Presence with Cutting-Edge Web Solutions... Looking to build a powerful new website or modernize your existing one? I bring global expertise (Canada, US, Australia, UK, Europe) in AI-driven development and high-performance web solutions. Why Choose My Services? ✓ 13+ years of real-world experience ✓ AI-Powered Web Apps (React + OpenAI/Gemini) ✓ Smart E-commerce with AI Product Recommenders ✓ Automated Content via AI Blog Writer & Scheduler ✓ Figma-to-Code Excellence (Next.js + Tailwind CSS) ✓ 100% Client Satisfaction Guarantee Technical Expertise: • Modern Frameworks: Next.js, React, Laravel, Node.js • E-Commerce: Shopify, Magento, BigCommerce + AI Enhancements • CMS Mastery: WordPress, Joomla, Drupal (Themes/Plugins) • AI Integrations & Automation (ChatGPT (OpenAI) Integration, Claude AI Integration, Chai AI Integration, AI Chatbots & Virtual Assistants, AI Content Generation, AI Customer Support Automation, AI Workflow Automation, Prompt Engineering, ) • APIs & Integrations: (Payment Gateways REST SOAP, OAuth API & AI API Integration) • SEO-Optimized & Mobile-First Development Full-Cycle Capabilities: → Custom Web & Mobile Apps → UX/UI Design Conversion (Figma/Sketch to Code) → Database Architecture (MySQL, MsSQL) → AI Automation for Marketing & Workflows Let’s transform your vision into a fast, scalable, and intelligent web presence. Innovative Tech, Transparent Process, Guaranteed Results Webflow | Webflow development| Shopify |Shopify development | Shopify design | Shopify Plus | Wordpress | Wordpress design | Wordpress development| WooCommerce | Wix | Squarespace | Hub-Spot | PrestaShop | Laravel | Angular | React | Node.JS | Vue.JS | PHP | Go-High Level | Kajabi | Framer | UI/UX | AI Integrations & Automation | ChatGPT (OpenAI) Integration | Claude AI Integration | Chai AI Integration | AI Chatbots & Virtual Assistants | AI Content Generation | AI Customer Support Automation | AI Workflow Automation | Prompt Engineering | REST API & AI API Integration | API & Third-Party Integrations | Custom REST APIs | GraphQL APIs | Payment Gateway Integration | Stripe | PayPal | Razorpay | Authorize.net | ShipStation | Klaviyo | Mailchimp | HubSpot | GoHighLevel | Zapier | Make (Integromat) | CRM Integrations | ERP Integrations | Shipping & Logistics APIs | Inventory Management Systems | Webhooks & Custom Middleware

Hey there! Wondering why am I the right choice for your project? Here are some testimonials from my previous clients: ⭐⭐⭐⭐⭐ 5.00 "If you need someone that is timely, professional, goes above and beyond, and really knows their technical skills, Harwinder is in a league of his own, and one of the best technical professionals I've ever worked with. Our project was quite difficult, requiring Ai background, high level react skills, and challenges no one has faced, but with Harwinder we were able to overcome every obstacle and able to launch my Ai website in a timely manner. I can't recommend him enough; if he applies for your job, you know it will be completed on time and professionally done." ⭐⭐⭐⭐⭐ 5.00 "Great lad. He knows what he is doing. Looking forward to working with Harwinder again." ⭐⭐⭐⭐⭐ 5.00 "Easy to work with." ⭐⭐⭐⭐⭐ 5.00 "The service given was very professional and very quick. Would hire again for sure." ⭐⭐⭐⭐⭐ 5.00 "One of the best freelancers I have worked with on upwork and would highly recommend him for all your development projects. Very patient and helpful and the best at what he does." ⭐⭐⭐⭐⭐ 5.00 "He provided me with the perfect results and even before the deadline i provided. It was great working with harwinder." ⭐⭐⭐⭐⭐ 5.00 "Harwinder helped me a lot in taking my business online and setting up my online store." It was indeed a pleasure working with someone so dedicated, honest, and respectful. He made sure deadlines were met and worked overtime for this project. Highly recommend using Harwinder for all your web development needs. Thank you Harwinder!" many more... ------------------------- I am Harwinder, a Full-stack web developer. I have professional skills in React/NextJs, Laravel, WordPress, UI/UX, and more. I have more than 7-years of experience in this field. You can check out more about me at my personal portfolio website bit.ly/iamhrwndr I'll be glad to help you with: ✔️Web Application Development. ✔️E-Commerce Development. ✔️SaaS Development ✔️Designing Websites/Apps (Figma) ✔️Bug Fixing, and much more..... I am using these technologies! ✅HTML5, CSS3, Javascript ✅ReactJS/NextJS ✅WordPress ✅PHP (Core, Laravel) ✅Figma and more.. Reson why should you hire me- ✔️Your satisfaction is my priority ✔️Have fluency in Javascript and other technologies ✔️Quick response ✔️Available on weekends ✔️Flexible availability with your time Please take a closer look at my portfolio. I am sure that you will love my work. You can also see my dedication through this. Kind Regards Harwinder S.

🚀 My name is Artem, Co Founder and CTO of JoinToIT. I am a Full Stack Developer with more than 12 years of experience building SaaS platforms, AI powered systems, and complex web applications. 💻 As a Full Stack Developer I have participated in more than 1000 successful projects for startups, SaaS companies, and enterprise platforms worldwide. ⚡ If you need a reliable Full Stack Developer who can design architecture, build scalable systems, and integrate AI or APIs into your product, feel free to contact me. I lead JoinToIT, a software development company with nearly 80 engineers including senior Full Stack Developer specialists, web developer experts, react developer engineers, wordpress developer professionals, and mobile app developer teams. Every Full Stack Developer on our team focuses on scalable architecture, business logic, and long term platform growth. Over the past decade I have worked as a Full Stack Developer building SaaS platforms, CRM systems, marketplaces, enterprise dashboards, and AI powered automation tools. Many companies hire me as a full stack developer saas when they need to build a product from idea to production with reliable architecture. Our engineers regularly work as full stack developer laravel and full stack developer php specialists building secure APIs, payment systems, and large scale SaaS platforms used by thousands of users. As a full stack developer crm I have helped companies automate sales pipelines, distribution management, and customer lifecycle platforms used by teams of 100+ employees. On the frontend side we work as full stack developer react engineers building scalable SaaS dashboards and modern web interfaces. Our developers also deliver projects as full stack developer react node building high performance web applications and API ecosystems. We also build real time systems as full stack developer react firebase engineers including authentication platforms, messaging systems, and live dashboards. Beyond SaaS platforms we also operate as full stack web developer teams delivering scalable web applications, internal platforms, and marketplace systems. Our backend engineers work as python full stack developer flask and python full stack developer django specialists building scalable APIs, automation platforms, and data driven systems. Many companies hire us simply as python full stack developer experts when they need robust backend architecture. For modern SaaS stacks, we also work as full stack developer supabase react engineers building scalable backend infrastructure and cloud native systems. Companies building AI driven products often hire us as full stack developer javascript saas ia or full stack ai saas developer teams to integrate OpenAI, Claude, and automation workflows into SaaS platforms. With more than 12 years of experience as a Full Stack Developer I have helped launch more than 100 SaaS platforms, 70 AI integrations, and 50 CRM systems used by companies worldwide. Our platforms support thousands of daily users and process millions of API requests every month. Our teams also work as web developer and react developer specialists building high performance user interfaces and SaaS dashboards. Some companies hire us as wordpress developer experts for custom plugin development and integrations. When projects require cross platform products our engineers also work as mobile app developer teams delivering mobile applications connected to backend SaaS systems. My skills: JavaScript React Web Application Web Development Software Architecture & Design Full-Stack Development Database Architecture PHP Python Node.js API API Integration WordPress PostgreSQL Web Design HTML5 Git Laravel MySQL Tailwind CSS Our technical expertise includes PHP, JavaScript, Python, React, Laravel, Node.js, Supabase, Firebase, Django, Flask, PostgreSQL, MySQL, WordPress development, Web Development, Full Stack development and modern AI APIs such as OpenAI and Claude. Whether you need a Full Stack Developer to build a SaaS product, an AI powered platform, a CRM system, or a scalable web application, my team and I are ready to help turn your idea into a production ready platform. Best regards Artem Chernitsov CTO, JoinToIT

🙌Hi everyone and welcome to my Upwork profile! I'm Victoriya, a Full-Stack developer with 5 years of experience in the planning, developing, maintaining, and optimizing both large and small-scale websites and web applications. Through many projects, I have mastered problem-solving skills and just fell in love with what I'm doing. I have a strong background in front-end, back-end development and API integration. I can work with existing projects and develop new ones from scratch. I'd be happy to assist you with your projects. 🔹My skills: 🌀React.js, Next.js, Redux; 🌀Typescript, JavaScript; 🌀Express.js, Node.js, Strapi; 🌀HTML5/CSS3; 🌀Semantic UI, Bootstrap, MUI, Tailwind; 🌀GraphQL; 🌀MongoDB, PostgreSQL, Firebase; 🌀Sequelize; 🌀leaflet, OpenStreetMap; 🌀charts.js; 🌀lodash, day.js, moment; 🌀API integrations; 🌀Stripe; 🌀Git; 🌀Firebase hosting, Vercel, Heroku. Communication is key for me. I love solving complex problems and am not afraid to ask questions when something is unclear. Feel free to nudge me - I'm open to new opportunities, so you can send me an invitation any time! You'll be rewarded once we work together😊