The team

The Team


Klaus Henke

Managing Director

Klaus qualified as a chartered accountant while working for PricewaterhouseCoopers, then spent over 15 years with advisory firms and investment banks including Fox-Pitt, Kelton, Dresdner Kleinwort Wasserstein and D4K Consulting, focussing on traditional M&A advisory and equity capital markets. He read European Finance and Accounting and holds German and UK degrees.

Klaus is the company's MD and looks after Billmonitor's finances and coordinates business development.


Dr Stelios Koundouros

Founder and Product Director

Stelios founded Billmonitor and looks after product development. He holds a PhD in mathematics from Cambridge University and has carried out research at the Mathematical Institute at Oxford.


Sales and Marketing


Corporate Account Manager

Daryl is responsible for the sales area within Billmonitor, where he utilises his extensive network, in order to educate them with regards to their mobile phone contracts. He has spent the past 30 years working as a Sales Trader within various investment banks, including UBS, BNP and Pictet. Most recently he helped create a boutique advisory company specialising in raising capital for companies in the healthcare sector.


Sales and Marketing Assistant

Victoria is a part of our sales and marketing team, she is responsible for the marketing area within Billmonitor where she works on raising awareness about the lack of transparency that exists in the UK mobile market. She holds a BSc in Marketing Management and MSc International Business Management from Kingston University.

Software Development


Software Engineer

Jake is part of our core development team and he is also responsible for analysing market data to produce reports about the telecommunications market. He holds an MMath in Mathematics and Statistics from the University of Oxford.


Software Engineer

Marcin is part of our core development team and maintains our frontend and infrastructure, while also continually improving our deployment processes. He holds an BEng in Computer Science from the University of Information Technology in Wroclaw, Poland.


Software Engineer

Paulo is part of our core development team and improves our backend systems and their integration. He holds an MEng in Computer Engineering from the University of Evora in Portugal.


Professor Chris Holmes

Scientific Adviser

Chris helps direct mathematical research. He is a Professor with the department of statistics, Oxford University. Chris’ research interest lies in the field of machine learning and pattern analysis via probabilistic data modelling and the use of subjective probability theory as a unified framework for coherent inference.

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See you soon,

The Billmonitor team