The team

Mike Darby CEO and Co-Founder

Mike is a leading expert in building services engineering, and has worked in the field for over 20 years. He has designed and delivered controls systems for multi-million pound installations, including for major banks, covering business-critical systems. Mike leads all our engineering and energy efficiency work and provides consultancy support for clients.


Gilbert Lennox-King Head of UK Business Development

Gilbert has recently moved to the UK from Hong Kong where he ran a successful energy efficiency services company called Energenz. His background in energy efficiency, business development and finance, combined with his extensive international contacts make Gilbert a strong commercial addition to the team. The energy Gilbert has brough to the company has ensured we are fired up to continue our rapid growth.


Sonny Masero Chairman

Sonny is a business leader and engineer who has worked in the sustainable energy sector for 20 years. His experience has included leading teams and companies at a variety of scales including public corporations, SMEs and startups. Over the past 5 years his focus has been on business growth at the intersection between clean technology and web technology. Sonny has a Masters in Sustainable Development and a first class degree in Management and Design in Engineering from City University. He leads on Demand Logic's business planning and commercial strategy.


Dan Mauger CIO and Co-Founder

Dan is an experienced developer of enterprise information and ecommerce systems and has an MSc in Information Systems from City University for which he won a departmental award. Dan leads on the development of Demand Logic's core software, from the underlying data management engines to the front-end web application.


Dalvinder Pal Mauger Finance & HR Manager

Dal is a part qualified (CIMA) Management Accountant with a background spanning 20+ years in the NHS, with roles in credit control, patient admissions, and for the most part, a lengthy career in accounting (at Barts and later UCLH). Dal has a BA (Hons) in Accounting, and has joined the DL team as a Finance Manager providing HR and admin support.


Steve Pike Software Developer

Steve has been developing software in the environmental, social and governance sector for over 5 years with a special interest in energy and environmental sustainability, holding first class degrees in both BSc Computer Science and MSc Environmental Conservation Management. Steve is primarily focussed on enhancing and increasing Demand Logic's suite of data visualisation tools.


Tom Randall Business Development Manager

Following degrees in mechanical engineering, science and technology policy, and sustainability, Tom has over 10 years experience providing low energy building design advice. Working for AECOM and Fulcrum Consulting Tom has lead teams working for clients such as British Land, Stanhope, Lend Lease, the GLA and Interserve. Tom's role at Demand Logic is to support business and product development.


Alan Rashid Building Performance Analyst

Alan graduated from BEng Mechanical Engineering and went on to complete an MSc in Structural Integrity which has allowed him to gain both academic and industrial experience through research and industrial work. Through an active interest in energy efficiency and carbon reduction he went on to work as a graduate Energy Consultant focusing on energy conservation, consumption and analysis through desktop calculations and simulations. Alan is a building performance analyst and works on day to day operational support assisting with technical support and energy consumption analysis.


Ian Shaw Senior Technical Account Manager

Ian has over 20 years experience in building services engineering, predominantly with electrical and control systems, for organisations and projects across many sectors. Ian supports Demand Logics clients and the internal technical and business teams.


Joe Short CTO and Co-Founder

Joe graduated in physics/philosophy, trained in journalism and has MScs in renewable energy technology and sustainability. As well as promoting Demand Logic and leading on creative design, he also works on development, including machine-learning techniques for discovering energy wastage.


Chris Stokesmore Software & Infrastructure Engineer

After studying for a BEng in Electronics Engineering with Computer Science, Chris gained an MRes in Human Computer Interaction and became interested in the green tech sector. Since then he has worked for Cambridge University and startups within the sustainability and energy saving sector, developing multiple data visualisation, processing and storage systems for energy and behaviour information. Chris works on the platform and services infrastructure at Demand Logic.


Nils Tödtmann Systems Architect and Co-Founder

Nils studied maths in Bremen and Bielefeld and lives in Berlin. He has built and operated servers and networks based on open-source software since the mid 1990s, and has worked as a programmer, network engineer, cryptographer and more. Nils designs and maintains our infrastructure and develops our communications and maths software.


Gareth Williams Senior Technical Account Manger

Gareth specialises in systems and controls engineering with more than 10 years experience in the buildings industry. Previously working for Schneider Electric commissioning and managing multimillion pound projects, he has a passion for energy conservation. Gareth’s role at Demand Logic is to provide technical support to our customers and implement energy optimisation strategies with our key accounts.


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