Authorised signatories

Sabrina Bublitz (CPO)


Sabrina Bublitz (born in 1981) has been working for ecotel communication ag since 2016. Since 2023, in her role as Chief Portfolio Officer (CPO) and authorised signatory, she has been responsible for the areas of Portfolio and Processes, Operations and Customer Service. Sabrina Bublitz has worked in the telecommunications sector since 2005, holding a range of positions at various companies in the areas of sales and product, process and project management.


Oliver Jansen (CBO)


Oliver Jansen (born in 1968) has been working for ecotel communication ag since 2013. Since 2023, he has been responsible for cloud telephony as Chief Business Officer (CBO) in the role of Chapter Lead. Oliver Jansen has been working in the telecommunications industry since the early 1990s, operating in the areas of sales, marketing, business development and product development.


Holger Hommes (CFO)


Holger Hommes (born in 1977) is Chief Financial Officer (CFO) and an authorised signatory and has worked for ecotel communication ag since 2014. In addition to group management and reporting, he is responsible for the Financial Accounting, Controlling and Billing departments. As Compliance Officer, he also oversees the Legal and Security Management departments. Holger Hommes has 25 years’ experience in the areas of group management, controlling, capital market reporting, preparing financial statements and auditing.


Alexander Wiese (CTO)


Alexander Wiese (born in 1984) has been working for ecotel communication ag since July 2023, initially as Director of Digitalisation and since October 2023 as Chief Technical Officer (CTO) and authorised signatory. He is responsible for Information Technology, Data & Voice Operations and Data & Voice Engineering. Alexander Wiese has held senior positions at various companies since 2009 and was most recently in charge of the IT department at Plusnet GmbH.