Senior Python Developer
Daniel Różycki
A backend built to survive its own success.
Since 2019 I’ve been designing and building systems in Python.
I’ve worked on projects in finance, insurance, AI governance, e-commerce, and blockchain/Web3. Day to day, I combine engineering experience with a modern approach to working with AI: I use Claude Code, Codex, and AI agents for navigating large repositories, analyzing problems, automating work, and shipping changes faster.
Since 2020 I’ve been at STX Next. Beyond writing software, I run technical interviews, support other engineers, and take part in architectural decisions.
I also share what I learn outside day to day work. I spoke at Python Łódź Meetup with “How can logs save your day?”, and presented “Simple is better than complex” at Python Katowice Meetup and PyData Bydgoszcz.
If you want to talk about a project or collaboration, write to kontakt@rozycki.dev