Executive Team


Meet the team helping our clients to succeed

Meet the people who have come together to change the way you work with data

Charlie Clark

Founder, Head of Partners

Charlie is a highly experienced and well regarded senior executive. He co-founded Rosslyn and Ockham Capital Ltd. and, prior to this was an investment banker.

Charlie has extensive experience of working with fast growing companies and the capital markets. Consistently recognized as a pioneer and leader in cloud analytics and for his leadership in establishing Rosslyn, Charlie is also a prolific writer and speaker on the subjects of data management and cloud analytics.

Charlie served with the British Army during Desert Storm and holds an MBA from City University Business School, London, UK. He is a Fellow of the Securities Institute and is an Accredited Associate of the Institute for Independent Business.

Hugh Cox

Founder, Chief Data Officer

Recognized as one of the UK’s leading data experts by Information Age, Hugh co-founded Rosslyn with Charlie Clark. Hugh helps executives at public and private sector organizations tackle business issues through technologies including cloud computing, data management and analytics.

Hugh has authored and spoken extensively on the subject of data analysis with particular focus on fraud prevention and detection, through the deployment of cloud-based analytics platforms.

Prior to establishing Rosslyn, Hugh held senior positions with COO Investments (EMEA) and Citigroup Private Bank. He also worked for Perot Systems, JP Morgan and Logica.

After leaving the British Army, Hugh took a BSc in Computer Science and an MBA from City University Business School, London, UK.

Roger Bullen

Chief Executive Officer

Roger has more than 20 years of finance, executive and operational leadership experience in technology-based companies, including start-ups, large cap and consulting firms. Roger’s experience covers working with national, US and global based companies. 

Roger recently held senior roles with Navigant Consulting Inc. as head of the International Division and Sapient Inc. as VP International Finance. He has also worked with private equity companies and been successful in taking companies to market and trade sale. 

Roger has been a shareholder of Rosslyn Analytics Ltd. and subsequently in Rosslyn Data Technologies plc since Charles and Hugh established Rosslyn.

Roger has been a member of the Chartered Institute of Management Accountants since 1990.

David Littler

Chief Technology Officer

David has over 20 years' experience in operational and technical consulting, helping organisations to address their most complex, heart-of-the-business issues. With a proven track record of leading and delivering technology strategies, David works with clients to enhance their operating models and improve business performance.

David's extensive knowledge of product design and development has enabled him to implement multiple large-scale programmes involving information management, process improvement and business intelligence. 

David's wide-ranging practical experience is backed by an MBA from Manchester Business School. Prior to his current role, David held a wide range of leadership positions at organisations such as KPN, Olivetti, Getronics and Wang.

Paul Cook

VP Global Sales

Paul has a wealth of experience in the B2B “e” markets space having held senior / board level positions at Medipurchase, UKprocure, TradingPartners, Aquanima and Zycus.

His experience ranges from Bespoke SaaS-based catalogs to global full suite enterprise applications and services.

A specialist in new business and start-ups, Paul has worked extensively in Northern Europe and the USA.

Paul has previously held the office of CPO for world leading Leisure and Entertainment and is fully qualified MCIPs.

Lance Mercereau

Chief Marketing Officer

Lance lives and breathes technology, always thinking of new and innovative ways of exploiting the latest such as cloud computing for the benefit of his customers. Lance started his career 20 years ago at the height of the San Francisco dot.com era, advising start-ups on business strategy, customer acquisition, alliance ecosystems, corporate affairs and brand management.

Known for his aggressive “West Coast Offense” approach to marketing, he subsequently moved to and worked in the United Kingdom and the emerging markets of Central and Eastern Europe where he successfully established in-house marketing organizations and launched products and services for award-winning companies such as Agilent, Dell, IBM, Intel and SAP, targeting enterprises, small and medium sized businesses (SMBs) and consumers.

Mike Wigg

Chief Operations Officer

With a background in mobile applications and FinTech, Mike has helped to drive some of the biggest technology innovations in financial services since he left the Royal Navy. 

Today, as our COO, Mike is responsible for delivering value to our customers through business intelligence and advanced analytics. Day to day, he balances delivering a high availability service to clients with introducing new and innovative capabilities to the product suite to deliver concrete commercial value. 

In his spare time, Mike is a vintage aeroplane enthusiast and trainee pilot.

Julie Painter

Chief Finance Officer

Since 2015, Julie has guided Rosslyn’s continuing market success post-IPO in her role as CFO. With a strong forecasting and operational background in business process outsourcing and technology organisations, Julie has built her career on providing clear and meaningful management information to help drive businesses forward.

At Rosslyn, Julie dedicates the majority of her time to managing finance process improvements, providing budget and forecasting insights and maintaining investor relationships, alongside a focus on compliance and regulatory requirements.

In her free time, Julie is also a pro bono mentor for The Aspire Foundation as well as a significant fundraiser for various children and cancer charities, raising over £100,000 over the last 10 years.

Want to join us?

We are always looking for talented people in the United States and the United Kingdom to join our organization. If you're passionate about new technology, innovation and creativity, don't hesitate to get in touch at careers@rosslyndatatech.com telling us why you want to join the team.