Testimonials
A few words from people I’ve worked with through the program.
Marc​
I have had the pleasure and privilege of being mentored by Voytek over the period of several months. Even though this did not involve a massive amount of interactions, the ones we had were really meaningful and helpful.
With the depth and breadth of his expertise in Functional Programming and Scala, combined with his calm and measured temperament, he had a consistent ability to help me keep things in perspective and stay focused on what truly mattered.
Roman​
I had a great experience working with Voytek as a mentor. We had several sessions together where he was very approachable and open to questions.
During this time, I also had a chance to contribute a bit to the workflows4s project, which was both fun and insightful. It gave me a better understanding of how open-source projects actually work from the inside, and I even managed to prepare and submit a few PRs.
I also asked Voytek a few questions about shapeless, and thanks to his guidance and hints, I was able to get a solid enough understanding to start migrating some of our internal libraries from shapeless to Scala 3.
Overall, it was a very positive and practical mentoring experience.
Adriel​
I worked with Wojciech Pitula through his Business4s mentorship sessions, and it had a direct impact on how I approach architecture and system design. I would highly recommend working with him.
I came into sessions with real questions from systems I was actively building, and we focused on making concrete architectural decisions. That included Scala and JVM-level tradeoffs, but also broader system design. A lot of the value came from tying those decisions directly to business outcomes, not just technical correctness.
We spent time evaluating libraries and platforms in a practical way. That meant comparing ecosystems like Typelevel, understanding long-term viability of open source dependencies, and avoiding common pitfalls when introducing new infrastructure. We also worked through distributed systems concerns like change data capture and streaming, with a strong emphasis on building systems that are actually maintainable.
He has a clear, current view of the Scala ecosystem, which made it much easier to filter signal from noise and make confident decisions.
The sessions translated directly into production systems. Decisions we made were implemented and are now serving customers.
The mentorship also improved how I think about ownership and system design, and it played a role in me stepping into my first senior engineering role at Podium.
Even working in Elixir now, the same principles apply. It made me better at making decisions that hold up in real systems.
Curious to work together? Apply here or read more about the program.