Douglas Squirrel – Chief Technology Officer

Transforming and Advising Teams Since 2004

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.


Have breakfast with me, have me visit you for an assessment, or phone for a chat.

⟶ Advice for startups

Looking for someone to speak and teach on team-building and software-development topics?

⟶ Courses and Talks

Come and see how "Action Science" can be applied to the problems faced by your teams.

⟶ Action Science

I help companies of all sizes make big changes to their culture, skills, and processes.

⟶ Biography

What other people are saying

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

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

See how I can help you too