Your dedicated team

About us


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Gillian Davis

Founder / Managing Director

Gillian Davis is a transformational leadership expert and author of First Time Leader (Wiley). As a coach and advisor to technology executives across the globe, she understands what it takes for leadership to thrive in fast-changing, high-growth environments. Her experience working with leadership teams across start-up, scale-up and corporate environments, has allowed her to gain valuable insight into what technology leaders need now, and in the future, in order to be successful.

As founder and Managing Director of OverTime Leader she leads her team to work with fast-growing tech businesses who are experiencing rapid change. They focus on creating practical and applicable advice that their clients can put into action immediately.

Born in Montreal, based in London, she can be often found crossing the Atlantic. In her spare time, she teaches regularly at General Assembly, runs leadership advisory for Google Campus’ AI start-up residency, hosts a leadership podcast and occasionally blogs for Virgin.



Heather Taylor Portmann

Programme Director

Heather works with people to develop the tools, mindset and approach needed to embrace change  and modern ways of working. She holds certifications in Scrum and service design, but draws on a breadth of methodology and practical tools from across technology, design and leadership in her work. 

She often works 'embedded' in organisations for a fixed period of time to support our clients through intense periods of change. For the past eight years, she has been working with fast-changing organisations across design, technology and social good: With stints at three award-winning creative innovation studios (ustwo, Made by Many and Adaptive Lab) and delivering work for high-profile clients, such as Skype, ITV, the NSPCC, and TransferWise. 


Elise Nobileau-Forget

Executive coach

Elise is passionate about leadership development, employee engagement and company culture. It is her belief that through the development of strong, authentic leaders, all levels of an organisation are more engaged and better equipped to deliver on business goals.  She is committed to making a tangible difference for her clients and to deliver change to their business.

She came to coaching after a 20-year career in finance, fintech and e-commerce at senior levels.  She holds an MBA from INSEAD, certification in coaching from the International Coaching Federation (IFC) and continues to mentor entrepreneurs for the Virgin Start-Up Mentorship Programme.