Who's Behind this Innovation ?                (praXec and UC Berkeley)

Sir George Zambellas


Graham Caleb CEO

Bernard Smith CFO

Ikhlaq Sidhu

Chief Scientist

Ken Singer

MD of Innovation & Entreprenership

Alexander Fred Ojala

Algorithm Specialist


Sir George Zambellas

praXec Chairman

George completed a 36 year career in the Royal Navy as Executive Chairman. His leadership as First Sea Lord from 2013 to 2016, included the resetting of the Navy's global role, shaping the UK's carrier contribution to the Strategic Defence and Security Review, and the rigorous pursuit of emerging technologies.

George served as UK Chief of Staff on numerous boards and committees and has a wealth of knowledge in the ways of the UK Ministry of Defence and Government processes, as well as the international maritime military and commercial community.

As a helicopter pilot, ship's captain, commander of amphibious forces, commander of UK and NATO naval forces and joint forces, George has an unrivalled pedigree in national and international command and leadership. But his passionate focus throughout, has been on maximising the value of people, whilst developing strategic effects through communication and influence.


Schooled in Africa and the UK, George has a honours degree in Aeronautics and Astronautical Engineering, is a Fellow of the Royal Aeronautical Society, and holds an Honorary Doctorate in Science from Southampton University.

Graham Caleb

praXec CEO


Prior to founding praXec, in 1989 Graham established CalebAcuity, a consultancy business aimed at supporting companies with the rapid improvement of their organisational efficiency and effectiveness through perfecting their execution of their Programme, Project and Process Management.

​Prior to CalebAcuity Graham held Board positions in the UK and USA and Executive roles in Information Technology, Engineering, Customer Service, Retailing and Supply Chain Management for FTSE 100 and Fortune 500 companies.

​Graham has worked with many prestigious clients including British Telecom, Credit Suisse, Vodafone, British Government Departments, Capio Healthcare, Network Appliance and Ericsson plus many more. Working for Michael Dell in the 1990’s instilled a strong belief of ‘in house’ people development providing a ‘high skills’ conveyor belt of expertise that constantly reaches for higher performance. Many engagements have followed that involve being a confidante to advise on overcoming people related company and personal performance challenges and this will be Graham’s main focus as part of the praXec team.


Although educated in the United Kingdom Graham has spent considerable periods of time living and serving clients in Silicon Valley and other parts of the USA.

Bernard Smith

praXec CFO


Bernard has extensive business experience as CEO and CFO in both private and public quoted organisations comprising large multinationals, SMEs, high growth software businesses and start-ups. 

Bernard also has first hand experience of mergers and acquisitions, operational management, international joint ventures, restructuring, strategy and corporate finance.

Having qualified as a chartered accountant, he started his career with ICI before being part of the team that established a JV with Xerox focussed on the commercialisation of artificial intelligence software developed at the Xerox Palo Alto Research Center. He went on to hold senior roles in high growth European and US technology businesses including Informix (acquired by IBM) and TIBCO Software. As CEO of a VC backed technology business, he oversaw several funding rounds and the transition of raw technology to industrial strength solutions, licensed to major corporations.

Through the integration of many corporate acquisitions and business turnarounds, Bernard has hands-on experience of what it takes to structure and motivate multi-discipline teams in fast changing environments and under pressure. Based on a pragmatic approach to problem solving, he strongly believes that individual and collective development is fundamental to business success.

Ikhlaq Sidhu

Chief Scientist

Ikhlaq Sidhu, Chief Scientist, and Founding Director, UC Berkeley's Sutarja Center for Entrepreneurship & Technology, & IEOR Emerging Area Professor.

  • A world-class expert in “real-life” technology innovation and leadership.

  • Invented the technology used in Skype and other internet communications (over 60 patents).

  • Created the Entrepreneurship & Technology area at the #1 public university in the world UC Berkeley.

  • Within industry, Ikhlaq Sidhu serves as a venture advisor to Onset Ventures, a $1B Silicon Valley investment firm. He is also a Fellow and Board Member of the Applied Innovation Institute, which connects industry leaders with experts and resources at academic institutions around the globe.   He was awarded 3Com’s “Inventor of the Year” award in 1999, and has been granted over 60 US Patents in networking technology, IP telephony, and PDA functionality. Technology and intellectual property from his work has been cross-licensed to many companies.  Sidhu also designed hardware for the first generation of laser printers at Hewlett Packard.

  • Conceived and established seminal Internet Communications business for network industry-leading Fortune 500 company including 60+ networking, communications, and services patents and kudos as Fortune 500 company Inventor of Year..

  • Guided top-tier VC-funded company to become high-profile source of leading edge wireless technology as CTO.

  • High-calibre proficiency in data networking, communications, and signal/image processing technologies. PhD in Electrical and Computer Engineering.

Ken Singer

MD of Innovation & Entrepreneurship

  • Ken Singer is Managing Director of Entrepreneurship and Technology at UC Berkeley and Chairman of the European Innovation Academy

  • A serial entrepreneur, innovation consultant and a world-renowned lecturer on the topics of business strategy, entrepreneurship, and innovation

  • Ken is sought after by many companies around the world to support them with their drive for change through new strategies encompassing the innovation of new products, services and operational improvements

  • A founding board member of the applied innovation institute and fellow of UC Berkeley

  • Ken Singer is also an advisor to numerous start-ups in the US and Europe. A 15-year veteran of the mobile industry (enterprise software and digital advertising), he has founded or co-founded five companies in the mobility space.

  • Ken’s experience spans all forms of mobile technology from mobile video advertising to downloadable mobile apps; from Bluetooth to HTML5, GPS, SMS, IVR, NFC and he has served as a guinea pig for virtually every other acronym in the industry.

Alexander Fred Ojala

Algorithm Specialist

Alexander is the Research Director of UC Berkeley's Data Lab where he manages and conducts research related to Data Science and Applied AI technology. He is also a co-founder of the UC Berkeley Blockchain Lab. He has hosted Masterclasses on AI and Blockchain topics around the world to executives and academics. Alexander's academic background is in Mathematical Statistics and he has a degree from UC Berkeley and a degree in Engineering Physics from Lund University in Sweden. He has been instrumental in the development of The Berkeley Innovation Index as well as the Data-X framework and class at UC Berkeley. Alexander has also been on the founding team of three successful companies, both in Sweden and in the US.