Архив Trainer - Brain Rain

Mehmet Yitmen

Mehmet’s Certificates

Courses taught by Mehmet


Mehmet Yitmen is a management and technology consultant/trainer helping organizations to be more agile and productive. For the last 10 years he worked with more than 400 teams and 30 companies including Telecom, Finance, Banking, Insurance, E-Commerce, Logistics, Software Development, Tech Startups etc. In Vodafone, he was leading VF TR Agile Transformation, was an active Member of VF Agile COE, and supported OPCOs: Turkey, Qatar, UK, Egypt, Germany, Kenya.

Also, he is the author of the Best Seller ”Scrum Bir Dönüşüm Hikayesi’’ and “Scrum: Usta Sorulara Uzman Cevaplar”. Mehmet is also the founder of AgileTurkey.org, the biggest nonprofit Agile community in its region since 2008 that supports the market to enhance business agility. He also actively supports some other nonprofit communities such as Agile Middle East, Agile Bosnia and Agile Greece. As an enthusiastic entrepreneur, Mehmet has been featured as one of the successful young rising stars in business by Fortune Turkey’s 40 Under 40 for the years between 2011 and 2015. He is one of the very first Scrum.org’s PSTs (Professional Scrum Trainer) and has delivered global trainings to more than 5000 Agile enthusiasts for the last 8 years. Mehmet is certified as PSD, PAL I, PSM I, PSM II, PSM III, PSPO I, PSPO II, CSM, SAFe Agilist, and SAFe Program Consultant.

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Ahmet Akdag

Ahmet’s Certificates

Courses taught by Ahmet


Managing Partner. PST, PSM-I, PSM -II, PSPO-I, PSPO-II, PSD, CSM, CSP, SAFe Agilist, SAFe Program Consultant Ahmet is a consultant and a certified Scrum.org and SAFe trainer helping organizations through their Agile transitions. As one of the co-founder/contributers of the many Agile associations in his local market like Agile Turkey, Agile Middle East, Agile Greece and Agile Africa, he is serving to the non-commercial side as well.

Ahmet helps organizations adapt Scrum, Kanban and other Agile processes in the right way by teaching the fundamentals to all levels in the organizations, coaching management, teams and helping to design the organizational principles-practices-tools for enterprise Agility.

Contributing to over 20 large organizational Agile transformation projects and coaching over 400 teams in small to large scale enterprises, Ahmet’s expertise on management and framework design directed him to create high quality solutions and best practices for scaling Agile within the fundamental principles of Agile processes. He has been coaching and consulting companies with a combination of extensive know-how and experience on both the process and practices side of Agile.

Upcoming trainings with Ahmet

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Ralph van Roosmalen

Ralph’s Certificates

Courses taught by Ralph


Ralph believes people make all the difference in every project. The people’s skills, how they work together, how they feel and just who they are. Scrum, Kanban, eXtreme Programming, Management 3.0, these are just tools or frameworks that exist to help people.

He has been working in IT since 1997. He had different roles: Software Developer, Tester, Scrum Master, Agile Coach, Team Lead, Manager and VP Software Development. What he always liked most, was working with people, to improve the processes and the environments they work in.

He is specialized in Management and Leadership coaching, Agile Coaching and Organizational Development support.

He is an active member of the Agile community and shares his insights and knowledge by speaking at conferences and writing blog posts. In the last years he was invited to Agile Prague, Agile India, XPDays and Agile Lean Ireland for example.

In 2017 he published the book Doing It – Management 3.0 Experiences. The first book about Management 3.0 Experiences besides the books Jurgen Appelo wrote. He publishes blog posts regular via LinkedIn, Management 3.0 blog, and his personal blog.

As CEO of Management 3.0. presents his program worldwide where it is necessary. Making sure the owners of Management 3.0 are regularly updated. Besides the CEO, he is also responsible for managing the Management 3.0 content.

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Ivan Spresov


Ivan Spresov. I’m working with agile models more than 10 years. I have participated in delivery  of the different hybrid and agile projects and programs on different roles: developer,  tech lead,  scrum master,  product owner and coach.  The most complex role is coach,  as you have to see the project overall ( how planned,  organized,  sold out)  and at the same time your skills,  knowledge should be the skills and ideas of the project leaders.  There are a lot of work what should be hidden to external people – like support tooling setup or requirements management workflow,  release models and coaching team how to communicate with stakeholders etc.
I’m SAFe program consult and Certified Scrum Professional by Scrum Alliance. Also I was interested in value streams,  so that is why I earned the Kanban Management Professional certification and often combine different approaches on different dimensions and levels – team,  team of teams,  services,  portfolio.  I have supported the transformations and facilitated large-scale events like Program Increment and multi-teams plannings in the USA,  UK,  Ukraine,  Russia and Belarus.  I’m leader of Agile Belarus community and active contributer to the agile communities of the Uzbekistan,  Kazakhstan and Russia.

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Gunther Verheyen

Gunter’s Certificates

Courses taught by Gunter