Jaswinder S.

.NET Full-Stack | AI Integration | Angular, React | Azure | 22+ Yrs

✅ Top Rated Plus ✅ 22+ Years of Enterprise Software Development ✅ 100% Job Success ✅ $600K+ Earned on Upwork Need an expert to rescue a failing project, modernize legacy software, build AI-powered applications, or scale your SaaS platform? I help startups and enterprises build, optimize, and maintain production-ready software using .NET, Node.js, React, Python, Shopify, AI, and cloud technologies. Whether it’s a new product, a legacy application, or a complex integration, I take ownership and deliver solutions that are secure, scalable, and built for long-term success. What I Can Help You With • AI Integration (OpenAI, Claude, ChatGPT) • .NET, ASP.NET Core, C# • Node.js, React, Angular, TypeScript • Python, FastAPI • Shopify Apps & API Integrations • REST APIs & Third-Party Integrations • CRM, ERP & Enterprise SaaS Development • Azure, AWS, Docker & Cloud Deployment • SQL Server, PostgreSQL, MongoDB & MySQL • Performance Optimization, Security & System Architecture I don’t just write code—I solve business problems, eliminate technical debt, and build software that continues to perform long after launch. If you need a senior engineer who can take ownership from architecture to deployment, let’s discuss your project.