management team

Meet the Leadership Team

Colin Calder – Founder and CEO

Colin Calder is the founder and Chief Executive Officer of PassivSystems, a developer of software for monitoring and optimising equipment in the home and for managing and reducing domestic heating energy costs and consumption.  He founded the Company in 2008 following 12 months of extensive research into zero-carbon homes in Tuscany, Italy.  Colin has 30 years of experience in the software and technology sectors, with a significant proportion of his career being involved in the bringing together of mobile and the internet.  In 1996 Colin founded Paragon, a software company focused on synchronising data between mobile phones, desktop applications and web-based services, which he sold for $500 million to in 2000.  Along with his work in the technology sector, Colin has also held the positions of Director of X / Open (now The Open Group), a global consortium of technology manufacturers working to promote open standards in the field of information technology, as well as advising the European Commission, European Parliament and the UK Parliamentary Affairs Committee on proposed changes to European legislation permitting the reverse engineering of interface specifications. This significant change in legislation resulted in the dramatic rise in the open systems movement and distributed computing.
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Jim Crooks – Managing Director EMEA

Jim Crooks has 25 years of senior management experience in B2B Services. He was Managing Director of ADT Fire & Security and Rentokil Initial Fire Services and held senior operational and project roles at Chubb Electronic Security. He brings to Passiv extensive experience of change management and profit improvement in multi-site service businesses delivering installation and field service solutions across a range of different environments. He is a Chartered Accountant and has a degree in Classics from Oxford University.
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Matt Clemow – Finance Director

Matt qualified as a Chartered Accountant with KPMG in London and has held a number of senior management roles across both SMEs and FTSE250 companies. He has a background in Consumer product & B2B Service businesses with a particular focus on growth stage companies. Before joining us, Matt managed the successful sale & integration of Christys’ & Co to Liberty Ltd, the London luxury goods brand and before that was the Divisional FD of a £120m turnover FTSE250 service business. He graduated with Honours from the University of Exeter.
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Antonia Calder – Channel Sales Director

As Channel Sales Director, Antonia oversees all sales generated within the Energy Efficiency Service provider channel. Antonia has been with the organisation for the last 3 years and has been instrumental in growing many of the commercial relationships we have to date. Prior to working for Passiv Antonia has worked for companies such as IRIS Software & Services and the NCC group where she was responsible for Business development.
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Ian Rose – Professional Services Director

Ian is a business development professional with over 15 years experience in the utilities sector delivering technology and service sales, bids, project management and consulting. He is currently helping PassivSystems to lead the charge in making the built environment the focus of attention for delivering energy savings and utility business transformation.
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Fraser Harding – Development Director

Fraser brings over 20 years of commercial technology consulting and development experience to PassivSystems. Most recently Fraser has held executive positions at a number of young organisations bringing innovative technology solutions to market. Fraser was a founding member of Paragon Software, one of the UK’s most successful technology startups, and was instrumental in building the company to be a world leader in mobile synchronisation.

Jeff Ball – Operations Director

Jeff has over 20 years of experience working at a senior level in operations and service and joins us from Ventura where he was head of the National Service Centre for Volkswagen. Customer care is at the heart of PassivSystems’ business model, and Jeff’s experience is invaluable in helping us build a company that delivers a service that lives up to our ambition.
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