I specialize in building robust C#/.NET backends, dynamic React frontends, and deploying them using modern Cloud-Native architectures. From designing relational databases and enforcing Clean Architecture, to writing Terraform infrastructure as code and configuring automated CI/CD pipelines, I enjoy owning the entire development lifecycle. My approach to software engineering is pragmatic: keep the architecture decoupled, automate deployments, and always write tests.
- ☁️ Azure Infrastructure Hub - Cloud Management Platform:
A centralized cloud management architecture provisioned via Terraform on Microsoft Azure. Features isolated VNETs, Zero Trust security with Managed Identities, Azure Container Apps (including Sidecar patterns), and automated CI/CD deployments via self-hosted GitHub Actions runners. - 📋 ProjectHub - Team Task Management System:
An enterprise-grade Agile management platform built with .NET 9, React 19, and PostgreSQL. Features a real-time reactive Kanban board via SignalR (WebSockets), strict Role-Based Access Control, a MediatR event bus, and automated CI/CD pipelines deploying to a Linux VPS in a Multi-Tenant architecture. - 🏋️♂️ 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. - 🎱 2D Billiards - Physics Engine & Game:
A highly optimized, custom-built 2D physics billiards engine written entirely from scratch in C# 13. Engineered with strict Domain-Driven Design (DDD) principles and rendered blazingly fast using Raylib. Features 100% domain test coverage, strict state machines, and decoupled Clean Architecture.
- 🎓 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.
- 📫 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 running, hitting the gym, exploring new tech trends, or practicing my Spanish!
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