I'm a full-stack developer with a background in aviation, based in Finland 🇫🇮

Software developer with a foundation in C and C++ from Hive Helsinki's 42 curriculum (2023-2025). I've built everything from scratch: shells, HTTP servers, raycasters, and memory allocators. That low-level experience taught me how software really works and made picking up new technologies straightforward.

These days I work across the full stack with TypeScript, React, Node.js, Fastify, and Python, though I naturally gravitate toward backend challenges. I enjoy optimizing performance, designing clean architectures, and solving problems that take a bit of detective work.

From aviation, I bring precision, systematic problem-solving, and the ability to stay calm under pressure. From development, I bring curiosity, adaptability, and genuine enthusiasm for building things that work.

WebPONG - Full-stack web application built with TypeScript, React, Fastify, and SQLite. Features multiplayer matches, AI opponents, tournaments, JWT authentication with MFA, and full ARIA accessibility.

Donna AI Agent - Python-powered chat assistant with OpenAI API integration and real-time GitHub data retrieval via custom function calling. Deployed on Google Cloud Run with enterprise-grade security.

HTTP Server (C++) - HTTP/1.1 compliant web server with configuration parsing, CGI support, and connection management. Includes protection against malformed input.

MiniBASH (C) - Unix shell implementation with pipes, redirections, environment variables, process management, and custom built-ins.

Check out my pinned repositories below for more! ⬇️

• Portfolio: casimirlundberg.fi
• LinkedIn: linkedin.com/in/caslun