“Felix is one of the smartest and encouraging members of the agile community I had the pleasure to work with.  Based on his knowledge and his experience Felix inspires the people to look beyond the immediate task and improve their work life.  Felix was the first Agilist bringing topics like Scaling Agility to Germany and the German speaking countries and i had the pleasure to do the first implementation of the Scaled Agile Framework together with him seeing him working with customers in workshops not stopping until the best solution for the customer was found fighting for the Agile Values in which he has a profound trust and enormous knowledge. Following the principle "Sharing is the new form of Ownership" Felix supports the agile community by hosting a blog, writing articles and blogs as well as promoting topics and authors for the benefit of the agile community.

Markus Meuten, Owner, Blue-iMotion Systems GmbH

"I have worked with Felix for 5 months in implementing Scrum agile software development with HolidayCheck. I can highly recommend him as very experienced, fact based and motivated IT-Consultant. He has filled the position as Scrummaster ad interim and did a great job in implementing and developping the basic scrum setup to work with. His senior appearance is very good and he is therefore seen as a very highlevel authority person. Furthermore I really like his special badenian humour and his very organised style. 
In case you need a scrum consultant, be quick to hire him!
Top qualities: Great Results, Expert, High Integrity"

Manuel Posch, Head of E-Commerce DACH, HolidayCheck AG

"I'm working with Felix since 2010. Felix combines advanced Agile (Scrum), technical know-how with solid communication skills, he always exceeds my expectations. I recommend Felix as a professional Scrum Coach."

"Herr Rüssel zeichnet sich durch fundiertes technisches Fachwissen und umfangreiches Know-how im Bereich Projektmanagement und -prozesse aus. Er hat damit die Einführung und Durchsetzung neuer Werkzeuge und Prozesse [...] vorangetrieben, insbesondere um Projekte mit verteilten Teams besser durchführen zu können. Seine starke Initative im Bereich Sourcing, die zu einer dauerhaften Kooperation unseres Unternehmens mit einem Offshoring-Partner geführt haben, sind hervorzuheben."

Mittelständisches Unternehmen, Karlsruhe

“I started working with Felix in the middle of a then on-going project that involved multiple groups in both US and Germany. Felix had secured all possible resources to help me transition into the new role quickly, work with all groups effectively during my monthly on-the-job visit in Germany, and accomplish the tasks successfully together. Ever since, I have observed the same high work ethics of Felix throughout all following project and product development when we work together from different continents.

Among many of his professional traits, the ones that impressed me most are his ability to clearly focus on clients and their goals, his confidence in delivering the professional services as well as his positive and persistent attitude. For the nature of the ITS business, continuous learning, an excellent listener and an actual "hearer" and effective communication are a constant must-be. During my work with him, I cannot think of any moment that Felix missed these abilities in the project and product development work.

I have enjoyed all my interactions with Felix. Regardless of the work challenges, I find Felix has a sense of humor and he is fun to talk to. Well done, Felix!”

Jingtao Ma, ITS Product Manager, PTV America

“Felix is a exceptionally talented project manager with spectacular professional experiences. We were working together in a difficult project and thanks to his abilities, knowledge and competences we were able to deliver the result in time. I was happy to have him in the project.” 

András Csepinszky Project manager, Connexis LLC

“Felix provided me with project management and technical input on several complex implementations and proposals in Australia. Felix provides good advice at inception and then "gets the job done", providing an effective interface between technical and commercial teams, even under highly challenging circumstances. Technically competent, Felix has earned the respect of his colleagues through consistent delivery. As well as being a very competent Project Manager with good customer-facing skills, Felix is a terrific and trustworthy person.”

Will Morton, Director, PTV Asia-Pacific


In Rahmen meiner langjährigen Tätigkeit als Softwareentwickler, Berater, Projektleiter und Agile Coach konnte ich erfolgreich mit und für viele bekannte Organisationen aus den unterschiedlichsten Branchen und Ländern arbeiten. Zu diesen Organisationen gehören (Auszug): 
  • ADAC e.V.
  • ATE GmbH
  • Atraxis AG
  • Bundesministerium für Bildung und Forschung
  • CompuGroup Medical
  • DB Cargo AG
  • DB Systel GmbH
  • Deutsche Telekom AG
  • Dresdner Kleinwort Wasserstein
  • FIZ Karlsruhe GmbH
  • HolidayCheck AG
  • HRS GmbH
  • ING-DiBa AG
  • Infosys Ltd.
  • Intelematics Ltd.
  • Interactive Objects Software
  • Lufthansa AG
  • Lufthansa Systems GmbH
  • Mygistics
  • Novartis AG
  • NTT Information Sharing Laboratory Group
  • OMV AG
  • Orisa Software GmbH
  • PTV AG
  • Renault AG
  • Varta-Führer