Client Success Stories

Sebastian is true technology visionier. He is able to turn most complex Engineering issues into set of pragmatic and comprehensive steps that make a venture journey simpler and more enjoyable.

I could only recommend Sebastian for any mission driven business at scale.

I had the pleasure of working with Sebastian as my CTO coach, and I can confidently say that he is an invaluable asset to anyone looking to improve their leadership skills in a technology organization. Sebastian has an incredible ability to listen and provide thoughtful feedback that is tailored to your specific challenges.

During our coaching sessions, Sebastian provided me with valuable advice and validation of my thinking around management challenges, team structuring, and day-to-day work. His insights were always spot-on and helped me to better navigate complex situations with my team. Additionally, his guidance was always grounded in real-world experience, which made it all the more actionable and valuable.

Overall, I would highly recommend Sebastian to anyone looking to improve their leadership skills in a technology organization. His expertise, experience, and ability to tailor his coaching to your specific needs make him an invaluable asset to anyone looking to grow in their role.

“The CTO coaching with Sebastian was very valuable for me. He's a "been-there-done-that" guy you can talk to about issues you face in your position as a technical leader.

We worked a lot together on team topologies, but also discussed detailed technical issues. He also provided personal insights and tried to take care of your personal well-being and growth during the sessions. I highly recommend working with him.”

Sebastian is an outstanding CTO and a popular speaker at international tech conferences.


More than that, he has the ability to listen, think, talk or execute - each at the right time and without compromise.


He knows how to motivate, empower and grow individuals and teams with his enthusiasm and energy. He creates an atmosphere of continuous learning, motivation, respect and fun.


I have learned so much about leadership from Seba, and it has been a pleasure working with him.

Sebastian has been giving a course on leadership while I was working at Ageras. He does not only manage to present the information in a clear and entertaining way, but has a unique ability to engage the audience in deep conversations from which you come enriched and enlightened.

I felt he has an incredible balance of knowing his craft, being humble and at the same time having and expressing his own opinions based on his knowledge rather than what books would tell you.

I would definitely recommend Sebastian as a mentor/tutor/coach!

Sebastian is a great CTO and mentor. He is able to unite product and dev to achieve its best.

By constantly improving agile work process, he creates an atmosphere of real innovation.

He has the ability to break down complex matters to make them understandable for everybody.

It was great working together with him, and I owe him a lot. Would love to work with him again in the future.

Sebastian is a brilliant and gifted technology leader who knows how to get the best out of people.

We worked together for several years in Kontist where he was both my boss and mentor. I had an opportunity to transition through several roles, from individual contributor to leadership and his support and guidance on this path have been instrumental.

Not only does he understand technology very well, but he is also great in passing the knowledge as well as building high performing teams. In addition to his professional expertise I find even more important his sense of humour, cheerful personality and in general a very positive attitude toward life and challenges. He is very approachable and full of experiences, always a pleasure to have a chat with him.

Sebastian is an ultimate tech leader and I would recommend him without a hesitation to any company or team.

I've had several months of very productive sessions with Sebastian. He gave me an opportunity to look at my work from a very different perspective from my own. He helped me gain significantly more confidence in what I'm doing, be more decisive and focused. There was also a very valuable element of assessment, advice, and experience sharing. Finally, this was very rewarding on a personal level — there was a lot of quality understanding of my thoughts, which enabled me to process them better. That's the most important thing in coaching. Thank you, Sebastian!

I've been working with Sebastian as my coach for a year. When I started, I was navigating the transition from a more hands-on tech lead to a role with even more people leadership responsibility. Sebastian helped me develop the skills I needed and see where I still had room to grow.

What sets Sebastian apart is his directness. He doesn't sugarcoat things. He gives a lot of clarity and asks important questions. His advice is always practical and immediately applicable. Our sessions were very self guided and we focused on current topics and challenges, as well as checking in on general topics and past resolutions.

He has a good sense for when to push and when to listen and our sessions were very conversational, not lectures. He asks the right questions to help me find my own answers while sharing his experience when it's genuinely useful.

If you're an engineering leader looking for someone who will challenge you to grow, Sebastian is the right choice.