As Principal Software Architect and Regional Head, Joachim brings the best ideas to the table when it comes to technology and architecture in complex mission-critical systems. He is particularly motivated when high-performance, individual solutions have to be creatively implemented in a short space of time. His eye for quality and his sense of humor are an asset in many projects. What Joachim likes about itestra is the variety of challenges and the freedom of responsibility. In Tallinn, he goes on excursions with his family into the Estonian countryside and works on various building projects - such as the renovation of an old wooden log cabin.

Diana has been designing the back office since 2010. This takes over all administrative tasks and ensures that all projects and colleagues are optimally supported and can concentrate fully on their tasks. She is Teamlead Backoffice and as employee #1 has given structure to the entire area. Diana particularly appreciates the creative freedom and family-like corporate culture at itestra. As a half-marathon runner, she has the will and stamina to drive and establish change. She has already laid the foundation for running a full marathon in the near future.

Roland is Regional Head and Principal Engineer. Shortly after joining the company in 2011, he launched the Cologne office, where numerous itestras work with him today. Whether reengineering, performance optimization or cutting-edge new solutions - his expertise is extensive. As part of the team, he has already successfully completed numerous projects for well-known clients. Roland is motivated by itestra's individual strategy within the software industry, its high quality standards and its adaptability and flexibility. He gets his strength and stamina from Crossfit and activities with his children.

Markus was scientifically active in computer science for 10 years. He has published and received awards for more than 70 international publications on software maintenance, architecture of distributed systems, compilers, high performance computing, operating systems and open source software. His passion is business innovation through modern IT and the renovation and transformation of existing software landscapes to restore future viability. In client projects, he combines IT expertise, economics and many years of experience in the insurance, banking, retail, telecoms and pharmaceuticals sectors to develop creative strategies that offer IT decision-makers at well-known companies new alternatives for action. At itestra, he is responsible for development, human resources and marketing. In his private life, his motto is 'you should never start to stop and never stop starting'. He enjoys traveling or trying out new sports as a former competitive athlete.

Célia has been an HR generalist since 2020 and accompanies our employees on their career path. The HR team takes care of further training, team events, the recruitment of new itestras and individual needs. Célia particularly appreciates the freedom to be creative and the variety of tasks. A quick application process at eye level, appreciation and respectful cooperation are important to Célia and she brings them into the team. In addition to her job, Célia has had her own young horse for four years and manages the riding stable's Instagram account. Through her colleagues, she has discovered another passion for herself: bouldering.

Jonah already has an exciting journey behind him - it will be 15 years in 2021. During this time, he has analyzed the quality of over 50 million lines of code for clients, developed strategies, managed the successful implementation and continually expanded his extensive knowledge. As Director Expertise, Jona is responsible for the following areas in addition to his projects: Research and Development, cooperation with universities, in-house workshops such as the Exchange Day and external workshops on topics relevant to the future of IT. In his private life, Jona enjoys spending time with his family. If there is still some time left, he plays the accordion and guitar.

Paula found her way to itestra through our Endspurt scholarship. Paula owes her decision to start at itestra to the great atmosphere and the friendly atmosphere. She has already been able to apply her skills in program analysis in exciting and varied projects with a high learning curve. She appreciates the challenge and the constant support from colleagues. In addition to her keen eye for program analysis, she has a special flair for musical transcription. As a member of a six-piece band, she not only plays the cello but also the piano and has been dancing in a dance club for over 10 years.

Managing director, computer scientist, mathematician and outstanding techie - Christian is as versatile as a Swiss army knife. His scientific background is in high performance, distributed and embedded software systems. He now has over 20 years of experience in the automotive, production and insurance sectors and knows complex software landscapes in detail. Christian's technical expertise is characterized by 100% mastery of various technologies, whether old or new, front or back end, as well as numerous programming languages. His will, his high quality awareness and his sharp judgment guarantee success for customers, projects - and itestra. He also loves technology and performance in his free time - especially in sport. Christian used to be passionate about handball and karate, now plays floorball in the over-30s league and also develops apps for organizing training sessions.