Vladyslav P.

Full Stack Developer | .NET Developer | ASP.NET Web Developer C# .NET

I'm a .NET full stack developer with 10+ years building web applications that businesses actually run on. I take an idea and ship it — front end, back end, database, deployment — and I've done it for products still serving customers a decade later. ✦ WHAT I DO BEST My core stack as a Full Stack Developer is .NET and C#, and I've worked in C# for more than 10 years. As a .NET Developer I build secure, scalable back ends with .NET Core and ASP.NET Core, expose them as clean ASP.NET Web API (REST), and back them with Entity Framework and SQL Server or PostgreSQL. As an ASP.NET web developer I pair those APIs with responsive front ends in Angular, React, or Blazor — clients often bring me in as a React developer on the front end and a C# developer on the back in the same engagement — then deploy and scale on Azure with Azure DevOps, Docker, and CI/CD. When a WordPress developer templated build has hit its ceiling, teams ask me to rebuild it as a custom .NET web application that can actually grow. ✦ PROOF OF WORK Longevity is the point. I took a rough idea from an automotive client and built it into an e-commerce platform that has served customers for nearly 15 years and still runs today. As the lead .NET Developer on Launch Control, a real-estate SaaS, I refactored the core and made the system 50x faster. I built SiftScore, an AI talent-acquisition platform that uses the OpenAI API to source and score large datasets. Across fintech, real-estate and healthcare I've owned the full lifecycle as a Full Stack Developer: requirements, architecture, build, go-live. 🚀 SaaS MVPs BUILT TO OUTLIVE THE MVP STAGE When a client starts from a rough idea, I take it the full way: requirements, architecture, prototyping, build, and go-live on Azure. As a Full Stack Developer I've shipped 3+ .NET SaaS platforms across fintech, real-estate and conveyancing — MVPs that can realistically evolve into long-term SaaS products, with the scalability and monitoring to grow once real customers arrive, rather than throwaway prototypes. ✦ INTEGRATIONS AND API-DRIVEN SYSTEMS Most of what I build connects to something else. As a Full Stack Developer I've wired .NET back ends to EDI 5010 claims feeds under HIPAA, GPS telematics hardware, handheld warehouse scanners, ERP and CRM systems, and payment providers — and I've shipped multi-tenant .NET Core Angular applications serving several client organisations from a single codebase. ✦ AI INTEGRATION FOR EXISTING PRODUCTS When projects require AI functionality, I bring hands-on experience integrating it into production systems. While my primary role remains Full Stack Developer and .NET Developer, I regularly add LLM-driven features, smart search and data-processing pipelines to existing web applications — usually by integrating a proven model (OpenAI, Claude, Gemini not limited to these 3 models) through a thin Python layer rather than training your own. Most AI features fail not because of the model but because the surrounding .NET architecture wasn't built to support them. What I deliver is reliable, observable and cost-controlled rather than experimental. ⚙️ MODERNIZING LEGACY .NET — WITHOUT THE BIG-BANG REWRITE Old code isn't the enemy — downtime is. As a .NET Developer I upgrade aging ASP.NET and ASP.NET MVC systems: a clean API layer, data access migrated to Entity Framework Core, refactoring against SOLID principles, all without freezing feature work. Stuck on ASP.NET WebForms? I migrated a WebForms spare-parts store — 20M+ products across 100+ suppliers — to ASP.NET MVC by running both side by side in one solution, so the business kept selling while the modernization happened underneath it. I move the application page by page behind a feature flag, so new and old run together in production and any screen can roll back instantly. The same incremental approach moves teams off PHP, Laravel or legacy WordPress builds and onto a maintainable .NET stack: ship value continuously, retire old code gradually, never go dark. ✦ ENTERPRISE-GRADE .NET ARCHITECTURE My work goes deeper than features. On a large enterprise fintech platform built on microservices I designed how the team builds — onboarding developers, setting architectural standards, and structuring a clean, maintainable .NET codebase that scales. As a .NET software engineer with over 10 years across .NET Framework, .NET Core, ASP.NET and ASP.NET MVC, plus an M.Sc. in Applied Mathematics behind the design decisions, I build systems meant to last years, not quarters. I'm a web developer, not a native mobile app developer working in Flutter or React Native — on the .NET side I do ship cross-platform with .NET MAUI. ✦ HOW WE'LL WORK If you need a Full Stack Developer or .NET Developer who can take something from rough idea to production — and keep it running for years — send me a note and I'll reply within 8–12 hours with the fastest path to shipping it. Let's chat!