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RafalKostecki/README.md

Hello! I am Rafał

I am a Fullstack Developer with over 8 years of commercial experience in building and scaling web applications. My main expertise lies in Node.js, React, Next.js and relational/no-SQL databases, but I also work with Elixir/Phoenix, which gave me a strong understanding of concurrency, fault tolerance, and distributed systems. I enjoy solving complex technical problems and designing systems that are robust, maintainable, and secure.

I have worked as a Tech Leader and Software Architect, making decisions that shaped products and mentoring developers to raise the technical bar within teams. My experience spans databases (PostgreSQL, MongoDB, Redis), messaging systems (RabbitMQ, Kafka), and cloud-native practices with Docker, Kubernetes, CI/CD, and monitoring.

I am passionate about software architecture and system design, always looking for ways to optimize performance and scalability. I value clean code, consistency, and reusability, which is why I put emphasis on strong typing, functional programming concepts, and thoughtful abstractions. Outside of commercial work, I explore new technologies through side projects and write a programming blog to share my knowledge.


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  1. Poyters/stella Poyters/stella Public

    Elixir library providing implementations of the most famous algorithms, data structures and math functions

    Elixir 12 1

  2. Poyters/svelte-interview-questions Poyters/svelte-interview-questions Public

    List of the most crucial Svelte Interview Questions

    4 1

  3. Poyters/angotia-world-creator Poyters/angotia-world-creator Public archive

    Modern program to create game maps (and sources) by community

    TypeScript 1

  4. Poyters/angotia-engine Poyters/angotia-engine Public archive

    Engine for Angotia MMORPG game

    TypeScript 1

  5. Poyters/angotia-sdk Poyters/angotia-sdk Public archive

    Software Development Kit for Angotia ecosystem which provides common utils, contracts etc.

    TypeScript

  6. Poyters/angotia-resources-api Poyters/angotia-resources-api Public archive

    API for Angotia Resources

    Elixir