Expert in Diversity and Leadership Styles: Empowering Your Team for Business Success

Available for (interim) CEO & Managing Director positions.

As a former Korn Ferry consultant specializing in Performance Management and Organizational Excellence, my journey into the tech industry began in 2002 at UNIT4, a global cloud-focused business software company. In 2012, after rejoining UNIT4, I became an integral part of the Global Strategy Transformation Team, where I was responsible for restructuring G&A costs following the company’s acquisition by the private equity firm Advent.

Following this, I took on the role of COO at GFY and CEO of Wonderbox, where I successfully grew the company's revenue from $15 million to $40 million and expanded the team from 35 to 50 people. My career continued as CEO of Yesty, where I drove further organizational success.


Specializing in performance management, organizational design, and leadership development, I deliver a management approach that seamlessly integrates employee well-being with business success.


As a thought leader and speaker on diversity and female leadership, I deliver engaging presentations and workshops that inspire audiences and foster impactful change. My book, Women in Tech: How Female Leadership Boosts Profit (publishing date December 2024), blends rigorous, research-based insights on diversity with compelling interviews from 15 female CEOs across the globe, offering a unique perspective on the power of women in leadership. For more insights, visit www.FemaleLeadership.io.

SERVICES

Management & Consulting Solutions

Performance Management

Diversity 

Female Leadership

Optimizing Performance Management for Scale-ups and SMEs

Effective strategies and leadership to enhance performance management for scale-ups and small SMEs. Drive sustainable growth by improving efficiency, boosting employee engagement, and ensuring long-term success. Build a strong foundation that empowers your business to thrive in a competitive market.

Fostering Diversity for Sustainable Growth 

Diversity drives innovation and long-term success. An inclusive environment empowers diverse perspectives, boosting creativity, improving decision-making, and strengthening team dynamics. Embracing diversity ensures your organization is agile, resilient, and ready to thrive in today’s global market.

Empowering Female Leadership for Sustainable Success

Unlock the transformative power of female leadership. Foster a culture of inclusion that empowers women to thrive in leadership roles, driving innovation and enhancing resilience. By supporting women leaders, you create a dynamic, forward-thinking environment geared for long-term success.

Testimonials Showcase

Pierre-Louis Jezequel

Group Deputy CEO of Wonderbox 

"Tamar's ability to drive business growth was truly remarkable in Wonderbox NL. One of her key strengths was her talent for significantly expanding the gift card business, which saw tremendous growth under her leadership."

Saphira van der Meulen

Director of Sales at Wonderbox 

"Tamar consistently demonstrates exceptional leadership and emotional intelligence. She excels at empowering individuals by recognizing their strengths and guiding them to reach their full potential."

Nick Stals 

Founder of Yesty

"I have had the privilege to work with Tamar. She has played a significant role in the professionalization of the company. Above all she is a great communicator and an effective leader. It was a pleasure working with her."

Wendy Trienen

Chairman Dutch Association of Gift Cards

"Her leadership, vision, and strategic insight have been instrumental in the significant growth and success of both the association and the broader gift card industry in the Netherlands."

Jörgen Nylund

CEO of BIM Group

"Tamar is a smart and professional CEO with good experience and all the functional and technical expertise: she quickly understands complexities. She sets clear tasks and establishes ambitious financial targets. She is known for her cost-control and proceeds with a methodological approach and with rigor."

Manon Niesten

Global Head of Sales at Yesty

"She is an exceptional leader. Tamar's leadership style is characterized by a deep personal approach, making her not just a manager but a true mentor to her team. She has a unique ability to trust and empower her team, which in turn motivates everyone to perform at their best."

GET IN TOUCH

CORDELLEO CORPORATE ADVISORY

(Interim) Management & Consultancy


Tamar de Leeuw