I specialize in building robust C#/.NET backends and I'm currently expanding my E2E stack by actively exploring modern frontend technologies like React and Vite. From designing relational databases and enforcing Clean Architecture, to configuring Docker containers, I enjoy owning the entire development lifecycle. My approach to code is pragmatic: keep it clean, keep it decoupled, and always write tests.

• 🏋️‍♂️ GymCore - E2E Fitness SaaS Platform:
  A highly-concurrent SaaS platform for fitness clubs. Built with .NET 9, React + TypeScript, and PostgreSQL. Features strict Clean Architecture, CQRS, Stripe API integrations, and optimistic concurrency control.
• 🎮 GameNest - Digital Game Distribution Platform:
  Digital Game Distribution Platform built from scratch with custom MVC architecture (Pure PHP, Vanilla JavaScript, HTML5 / CSS3).

• 🎓 Education: Currently pursuing a B.Sc. in Computer Science at Cracow University of Technology (2023 - 2027).
• 🤝 The Soft Edge: Thanks to my background in professional customer service, I don't just write code - I solve real problems. I'm used to high-pressure environments and translating complex technical jargon into plain, actionable language.
• 🤖 AI Workflows: Certified by Google. I actively leverage Prompt Engineering and AI tools to write better code and streamline my daily development processes.
• 💬 Ask me about: The .NET ecosystem, C# architecture, SQL database design, Entity Framework Core, or containerizing applications with Docker!
• 📫 Reach me: kacper.gumulak@gmail.com | LinkedIn
• ⚡ Fun fact: I love solving problems - both in code and while interacting with people. When I'm away from the keyboard, you can find me hitting the gym, exploring new tech trends or practicing my Spanish!