Developer and leader with over 19 years of experience in the internet industry. A lover of new technologies, hardware innovations, and startups. I've built and managed development teams for the largest brands in Poland and internationally — including Onet.pl, Interia.pl, RMF.FM, Bauer Media, DataFeedWatch.com and Punkta.pl. I'm experienced in creating development and testing teams from scratch and scaling them effectively.
- 👨💼 Technical Project Manager at Visuality (since June 2025)
- 💡 Supporting teams in delivering technical projects and leading communication with clients
- Backend: Ruby, Ruby on Rails, PHP
- Frontend: React, Next.js, HTML, CSS
- Databases: PostgreSQL, MySQL, MongoDB, Redis
- DevOps: Docker, Git
- Other: REST APIs, AI, OpenStreetMap
- Scaled an IT department from 3 to 26 team members
- Led projects for major international brands like Adidas and Reebok
- Built and launched public tools like Cominer.io and GoTranslate.pl
- Performed security audits and drove technical strategy at the CTO level
Onet.pl · Interia.pl · RMF.FM · Bauer Media · DataFeedWatch · Punkta.pl · inFakt.pl · Visuality
“Technology is only valuable when it serves people — that’s why I’m passionate about building and improving it every day.”
— Sebastian