Meet our experts

Dr. Brian Marien is a trusted advisor to senior leaders, bringing a powerful fusion of medical expertise, psychology and neuroscience to help organisations enhance resilience, motivation and high performance at scale.

Will is passionate about workplace mental health and performance, and specialises in organisational behaviour change. He’s spent the last 10 years working across multiple sectors, transforming behaviours and culture in SMEs, corporates, schools and universities.

Sinead loves empowering people to think, feel and be at their best. She’s a chartered psychologist, with a wealth of experience across private, statutory and educational sectors. She has a strong interest in cognitive and behavioural approaches for sustainable change.

Catherine has a clinical and academic background, having worked as both a forensic psychiatrist and university lecturer. At Positive, she combines her experience and scientific knowledge to deliver engaging and thought-provoking sessions to clients across industries.

Eloise spent the first 10 years of her career in corporate banking and management consultancy roles, before returning to her passion: psychology. Her PhD focused on psychological resilience, and she specialises in protective factors for psychological wellbeing.

Juliet has over a decade of experience in client operations, beginning her career in the finance industry before working across both the private and public sectors. She is passionate about supporting clients on their journey with Positive, ensuring excellence at every stage.

Since completing her PhD in psychiatric epidemiology, Jazz has worked with digital health start-ups to shape research and communication strategies. At Positive, she supports product development and translates psychological insights into story-led content.

Jo supports finance at Positive, with international experience across the UK, Netherlands, and Australia. She previously led finance in an APAC tech firm and began her career as a financial analyst in global corporations across EMEA.