This site is all about my work as an executive coach and consulting Chief Technology Officer (CTO). Using my 15 years of experience as a senior technical leader - and a set of clever management techniques called Action Science - I help companies of all sizes make big changes to their culture, skills, and processes. I provide transformation and advisory services, deliver courses and talks, and offer free help to startups. To learn more, you can watch me in action, check out my biography, or read a case study.
If you’re interested in my personal rather than professional pursuits, check out my research in mathematics and computer science, my open-source projects, and personal interests such as my 600-year-old home in Folkestone.
When Squirrel began working with us, the engineering team was full of talented and committed developers who lacked leadership and confidence. He helped to transform them into an energised, highly-focused team who now deliver high-quality product better and faster than I could have imagined.
—Paul Joyce, founder, Geckoboard
I see a lot of tech due diligence reports, and this one was exceptionally thorough, detailed, and most valuable of all, opinionated.
—Stefan Tirtey, Managing Director, Commerz Ventures
Squirrel was very quickly able to identify a number of areas where we could improve development processes and leadership at Nested. Over three months he helped us implement Elephant Carpaccio and refocus on responding to changing business needs rather than following a defined plan - this was invaluable in a business which is growing rapidly while simultaneously iterating on its business model. Squirrel also worked with leaders and other key people across the product and technology teams to make major improvements in time management and strategic focus.
—Phil Cowans, co-founder, Nested
Squirrel coached our senior team and has helped transform our structure and processes in a very short space of time. His presence has been key to the team moving faster than ever before by challenging our ingrained and established way of doing things enabling us to have a laser focus on the necessary actions to be successful. Particularly of use to us has been his extensive knowledge and experience in fast growing businesses that have faced these same challenges. When dealing with the members of the Unbiased team Squirrel quickly assesses an individual, using their strengths to help guide them in the right direction.
—Karen Barrett, founder, Unbiased
Squirrel is an exceptionally talented CTO who helped revolutionise the SecretSales’ Technology function. He hired and integrated a new team and implemented future-proof practises that have enabled the efficiency and quality of the Technology team’s output to continuously improve. He is an accomplished and inspiring manager and was a well respected Senior Team Member during his time with us at SecretSales. He has cultivated a finely-tuned, self-sufficient Technology function, which we are very grateful for.
—Nish Kukadia, founder, SecretSales
Squirrel has contributed immeasurably to our company’s success during his ten years as our CTO. Squirrel built a 50-strong Technology team which has fuelled our growth and earned us recognition as a leading proponent of best-practice software development. He established the technical, management, and recruitment processes that have supported our operations and on-going growth. He has shown himself to be a gifted technologist, a strong manager, a good contributor to business discussions, and an eloquent company representative on technical issues.
—Rich Koppel, founder, TIM Group
We used Squirrel when we were designing our first website and recruiting our tech team. He helped us to understand how engineers worked , and guided us to hiring the right people . He saved us a lot of time and money.
—Martin Armstrong, founder, Somerton