The Team

Steve Preston

Chief Executive Officer

Steve is an accomplished CEO with over 25 years' true global experience in the Telco industry. His previous executive position was the CEO and board member of Norconsult Telematics; a telco services and software solutions global company based out of the Middle East with global operations. Before joining Norconsult, Steve spent 11 years at Aircom International; a telco software and software company. He was instrumental in the business' global growth from a couple of offices to 18, between 2000 and 2011. This included two exits. Steve has also served in a number of executive and non-executive board roles covering Software and Services globally in other companies which have included growth followed by business exits.

Prashant Kumar

CTO & Cofounder

Before founding Cardinality, Prashant spent over a decade working with major telecommunications service providers like Telefonica, Deutsche Telekom, Hutchison (3), and AT&T. During this time, he was the architect of some of the biggest online charging solutions (handling the real time rating and quality of service (QoS) of over 20 million concurrent subscribers). Whilst working for Telefonica UK he was responsible for the solution architecture of their big data analytics solution; he evaluated potential suppliers and prototyping approaches, architected the solution and assisted in the implementation of one of Europe’s largest Hadoop clusters. Prashant has a Master’s degree from London School of Economics, focusing on System Design in Context and a Bachelor's degree in software engineering focusing on designing scalable business data systems and mobile communication protocols.

Tim Fielden

Chief Operating Officer

Tim brings over 20 years' experience in telecoms, including 17 driving value with O2 UK. He has delivered major infrastructure projects focused on business transformation, in terms of scale, while reducing costs and adding features which led to improved customer experience and drove up profitability. Most recently, Tim led the mobile data core through an era of massive growth, brought on by the smartphone revolution. During this time, he and his team worked on ways to utilize network and business data to better understand network performance and customer experience. The results drove smarter investment decisions as well as ensuring that Marketing and Customer Engagement groups had timely customer insights and were equipped to leverage and engage with current and future subscribers.

Martin Ganski

Head of Business Development & Cofounder

Martin has led Business Development functions in a diverse range of industries since the start of the millennium. Before founding Cardinality, he helped establish another company in the UK called Projex-Cellular Infrastructure to provide specialist services such as indoor and Wi-Fi planning for the United Kingdom 2012 Olympics. Projex-CI’s presence in the UK grew significantly during Martin’s tenure and now provides a vast array of well-regarded products and services. Prior to Projex-CI, Martin has been involved in several business catalyst organizations including a Mobile Banking company in Latin America, a MVNO managed services company, and a mobile reselling business. One of his start-ups in Mexico built a multi-million $US telecom services revenue stream. During the 1990s Martin worked for Ericsson in both the United Kingdom and Latin America so he understands the intricacies of working in a culturally diverse global marketplace.

Ray Hanford

Chief Financial Officer

Ray joined Cardinality in July 2020. His prior CFO experience includes several SME software businesses over 10+ years covering 3 exits and a turnaround. Well versed in private, VC and PE-backed businesses. Earlier board experience was in major blue chip corporates including Vodafone in UK, Europe and Japan. Led and directed several strategic acquisitions and business integrations in UK and Europe. Ray is a chartered accountant with a business honors degree from University of Warwick.

Stephen Tyler

Head of Program Management

Stephen brings over 10 years' experience of Telco projects and deployments to Cardinality. He has experience working with operators across the globe and was instrumental in the successful implementation of the world’s largest PM system at AT&T. Additionally, he has experience across many industries including Life Sciences, Automotive and Insurance. Having been both the purchaser and provider of solutions, Stephen brings a strong value-based focus when proactively engaging with customers. Also, from being immersed in the regulated world of Medical Device, he has a strong quality and compliance focus. All these aspects are brought to bear whether overseeing customer engagements or working directly with R&D to ensure that our commitments to the market are met.

Ian Teasdale

Head of Sales

Ian has worked in the high technology sector for 30 years.  He started his career in France in a scale-up involved in leading edge technology that was absorbed into the SAGEM Group.  After moving to the UK, he has worked in some of the largest and smallest players in the industry including Alcatel-Lucent and TE Connectivity where he was closely involved in breakthrough sales and transformations in global accounts.

Anton Prenneis

CMO & General Manager, U.S.A.

Anton’s experience in high-tech spans software engineering, marketing, product management, technical evangelism, competitive intelligence, strategic alliances and corporate strategy. Over the course of his career at IBM, EMC and Dell Technologies, Anton has enabled sales organizations to grow market share, built channel partner programs in Asia, and directed software licensing policy to support M&A and product development. At, Anton is pursuing his passion of making enterprise-grade data analytics & AI available across industry sectors while contributing to’s rapid growth. Anton holds a M.Sc. in Computer Science from Rensselaer Polytechnic Institute and an MBA from Columbia Business School.

Kevin Boateng

Head of Solution Architecture

Prior to joining Cardinality, Kevin had 18 years’ experience in the telecoms industry.  This included working in both telecommunications service provider and vendor environments and across a number of different roles including architecture, platform design, vendor selection, integration and Professional Services.  He has worked on a variety of large infrastructure and customer-facing projects in the IT, Packet/Voice Core, IN, VAS and MVNO domains for organizations including Deutsche Telekom, EE, Oracle/Tekelec and Telefonica, and across Asia, Africa, Europe, Latin America and the US.  Kevin has also worked with a number of small IT & Telecoms consultancies, focusing on SME and Not-For-Profit organizations.

Kamil Raróg

Head of Engineering

As the developer who literally wrote the first line of code for, Kamil singlehandedly architected and delivered’s earliest releases. Since 2015, he has built the company’s engineering organization, leading the team as it works to continually enhance product roadmaps and technical architectures. Kamil is both a tech polyglot and is well-versed in multiple languages. Kamil holds Master’s and Bachelor's degrees in Computer Engineering and in his spare time, Kamil likes to build gaming consoles and is an avid gamer.