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All contributors
![Mike Wojtyna](https://sphere.it/wp-content/uploads/2022/08/mike-min-1-150x150.jpg)
Mike Wojtyna
Quality-Oriented Java Developer, Consultant & Trainer
Mike is a Java software developer with a passion for creating great products. Domain-driven design & Test-driven development are some of his favorite tools. His code is clean and easy to modify, thanks to the modular, loosely coupled design achieved by continuous TDD iterations backed by a deep understanding of business requirements. Mike is also a professional consultant and trainer. Recently he has created an interactive training program to help you become a professional software developer.
Talks by Mike Wojtyna
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![Szymon Barabasz](https://sphere.it/wp-content/uploads/2021/12/IMG_0071-Szymon-Barabasz-150x150.jpg)
Szymon Barabasz
UX Designer & Business Analyst at Industi
Szymon to UX designer i analityk w lubelskim Industi. Na codzień zajmuje się tworzeniem dedykowanych systemów IT. Jest z produktami od pierwszych koncepcji i pomaga…
![Bartłomiej Pisulak](https://sphere.it/wp-content/uploads/2023/07/CV_Kwadrat_Duze-150x150.jpeg)
Bartłomiej Pisulak
Senior Manager, Cloud Engineering at Pegasystems
Senior Manager of Cloud Engineering with 10+ years of professional experience. Passionate about building successful organisations. 改善 Kaizen enthusiast. Seasoned IT Trainer and university lecturer,…
![Nikolay Tsvetkov](https://sphere.it/wp-content/uploads/2021/03/Nikolay_Tsvetkov-150x150.jpeg)
Nikolay Tsvetkov
Big Data Software Engineer at CERN
Nikolay is a Senior Software Engineer at CERN where he is currently working on the Monitoring infrastructure for the computer centre and IT services. Dealing…
![Sean Walsh](https://sphere.it/wp-content/uploads/2021/03/Sean_Walsh-150x150.jpg)
Sean Walsh
Field CTO and Cloud Evangelist at Lightbend
Field CTO and Cloud Evangelist at Lightbend, and a 20 year veteran of IT and has previously held various leadership roles in the tech industry.…