Thousands of people have supported our vision and helped build Exercism.
Exercism relies on leadership team and staff, a wider team of approximately one hundred maintainers and key contributors, and small contributions from thousands of individuals. Beyond these contributions to our product, tens of thousands of members of our community have contributed by giving feedback and help to others.
Leadership Team
Our leadership team manage the strategic and organisational sides of Exercism. They are responsible for fulfilling our mission statement and maintaining our values.
Katrina Owen
Katrina is the original creator of Exercism. She is co-author of 99 Bottles of OOP. Polyglot developer and Ruby Hero award winner, with a degree in Molecular Biology. Cares deeply about open-source and contributes to several projects outside of Exercism.
Jeremy Walker
Jeremy is an entrepreneur and software developer, who's passionate about equality and opportunity. He has co-founded various organisations, including Meducation, Wondr Medical, and Kaido, and holds a patent for AI used in heart surgery.
Staff
Our staff manage our website, the CLI and the operational side of Exercism, ensuring that we provide a safe and reliable experience for everyone using Exercism.
Erik Schierboom
Erik works full-time for Exercism, building the software and infrastructure that powers the open-source elements of the platform, and ensuring each track a joy to work with. He was a top Exercism volunteer before joining full-time. He is a polyglot developer who loves to learn new languages.
Taiyab Raja
Taiyab is a seasoned UI/UX designer responsible for designing Exercism v3. If you think Exercism looks and feels awesome, he’s the man to thank. Taiyab enjoys all things startups, design and entrepreneurship.
Loretta Murray
Loretta is motivated by the transformational power of fundraising, and has a track record of successful strategic and operational delivery across complex organisations including Cancer Research UK, UNICEF, NSPCC. and Abertay University. She is a qualified business coach with a passion for developing fundraisers' skills.
Jonathan Middleton
Jonathan loves to help others grow and find their unique space in the world. With an entrepreneurial streak and multi-cultural background, he loves to listen and build deep and lasting community. Away from work he spends most of his time being father to his adorable but chaotic daughter.
Áron Demeter
Áron is a self-taught developer who gets excited about discovering interrelations between things. He has a Master's degree in classical piano performance. In his freetime he enjoys spending time with his family, learning new languages on Exercism or listening to an opera.
Alumni
People who have previously worked full-time at Exercism and since moved onto new adventures. Their legacies are gratefully remembered!
Nicole Chalmers
Nicole is the Head of Product at Kaido. She spent two years as Head of Product for Exercism, guiding us from v1 to v2, and helping set the principles and ideas that still drive Exercism today.
Charles Care
Charles was part of the team that built Exercism v2, working specifically on the server-side code and infrastructure. He helped build out the first version of our automated mentoring platform, and Github integration.
Karlo Soriano
Karlo worked on the website part of Exercism. He created most of the website's interactive frontend for v3, and contributed to much of the Rails backend platform.
Track Maintainers
Our maintainers are the lynchpins of the language tracks and exercises on Exercism. They create and organise exercises for each of our 50 languages and help guide us to ensure Exercism teaches students in the most idiomatic way possible.
See all Exercism maintainers
Mentors
Our mentors are the human element behind Exercism, providing empathetic feedback on learners' solutions. They are the magic that makes Exercism come alive.
See all Exercism mentors
Open source contributors
Exercism could not be the success it is without the contributors of over 2,000 volunteers, who add value in numerous ways, from writing tooling to creating the exercises you solve.
See all contributors