Intro

At CircleRadius, we shape tomorrow’s leadership – more sustainable, more inclusive and more courageous. We specialize in developing talented senior leaders – the top of tomorrow. For HR, we are a sparring partner and facilitate the Circle HRD community. Together, we shape tomorrow’s leadership. And we need it today.

by always keeping a sharp eye on the overall purpose, goals, and ambitions of the business.

Aligning with strategic agendas 

who offers an external viewpoint and international benchmarking against other leading organizations.

Like working with a colleague

to understand top management preferences and how best to position leadership development.

Strong stakeholder management

with global coverage, to find the right person, agency, or institute for the job.

Operating within a network of partners 

Recognized for

Heritage

<h2 class="has-circle">Heritage</h2>
CircleRadius builds on more than 40 years, and two generations, of leadership development:

Leo Steverink starts his career in management development at the Heidemij (now Arcadis) and later becomes responsible for management development at Heineken.

Leo Steverink leaves Heineken to start International Management Education Consultancy (IMEC) and the Circle – a peer-to-peer community for HR Development Managers.

Stan Steverink joins Leo at IMEC, and the two work to grow the agency and the Circle community.

An acquisition and merger with Hay Group enables a broader leadership development portfolio and global reach.

Leo retires, and Stan resigns with Hay Group to relaunch the agency and Circle community under the name CircleRadius.

CircleRadius launches the new purpose 'Shaping tomorrow's leadership. Together' and focuses on developing senior and mid-level leadership talent - tomorrow's top leaders.

People

Natalie Whittle is an experienced international human resources specialist, leadership trainer and coach. After eighteen years of working in corporate environments – namely ABN AMRO, Ernst &amp; Young, Woolworths (South Africa) and Edgars (South Africa) – she started working independently in 2008. She is experienced in the area of leadership development, team development, coaching, change management, talent management, strategic human resources, diversity and organisational design.
In her last role within ABN AMRO, she was a programme manager, designing and facilitating leadership programmes for the top 2500 employees globally. Her role as an independent has allowed her to work in many different industries globally, where she facilitates leadership programmes; coaches face-to-face, virtual teams and individuals; assists companies in developing their talent management strategy, and supports them in assessing talent using various tools and methodologies. She is certified to work with several psychometrics like MBTI, FIRO B, Potentia and 360 degree feedback tools from various organisations.
Natalie uses her industrial psychology background, extensive experience in human development and understanding of corporate complexities internationally to assist companies in developing their future and current leaders and specialists. Her style of working is very practical and easy for managers and specialists to apply in their daily work.

Facilitator & Coach - 
Developing current and future leaders

Sietsche is an experienced coach, trainer, consultant and psychotherapist. She combines consulting expertise in organisational, leadership and personal development with business and psychotherapeutic experience. She encourages you to shape your leadership story; helping you to feel charged so you can take charge.
Building on more than 20 years experience in various roles – management consultant, programme manager, facilitator, trainer, entrepreneur, coach and psychotherapist -, Sietsche has worked extensively in organisational development at senior level across several disciplines: change management, organisational design, coaching, talent strategy, team development, leadership development programme design and delivery, and meeting design and facilitation.
Her style is reflective, empathetic, light when possible and confronting when needed. Clients describe her as ‘sharp, present and supportive’. She has a natural curiosity in the backgrounds of people, their motives, behaviours, thoought and feelings; ‘what is the story?’. Listening to the rational and irrational, the head and the heart, ‘hard’ and ‘soft’ in organisations. Her psychotherapy background brings depth to her approach of business issues.
Sietsche has worked across a range of industries, e.g. oil and gas, banking, retail, pharmaceutical, logistics, rail, mail and recently circular economy. Some examples of companies she worked for are KPMG Management Consulting, Gemini Consulting, Shell, AstraZeneca, Boots, British Steel, Atradius, NS, Post NL, Rabobank, the city of Amsterdam.
Sietsche holds a MSc in Organisational Psychology (Rijksuniversiteit Groningen), a MBA (Imperial College Business School, London) and the qualifications as a psychotherapist (registration by Dutch law). She is also qualified to use psychometrics like MBTI, CPI, Insights Personal Discovery and IOPT.

Facilitator & Coach - 
Charging you to take charge

Rob-Jan de Jong is an international speaker, writer and consultant on strategy and leadership themes. He serves as an expert lecturer at various leading business schools, including the Wharton Business School (USA), Thunderbird School of Global Management (USA), Nyenrode Business University (The Netherlands), and Sabanci Business University (Turkey).
As a behavioral strategist, he speaks, teaches and consults on executive subjects such as visionary leadership, influence, strategic decision-making and innovation. He is primarily interested in the interaction between strategic subjects and the human, psychological factors at play in the strategy process. Pivotal leadership themes such as vision, persuasion, decision-making and engagement do not merely follow from rational arguments, but are strongly influenced by social, psychological and moral factors. A solid understanding of these aspects and the way they interact is therefore key to successful leadership.
In his speaking, writing and teaching work, Rob-Jan draws on these various disciplines to arrive at new and insightful perspectives on successful leadership.

Facilitator & Core Faculty - 
Raising visionary capacity

Thimon de Jong is an expert in the strategic business impact of societal change and the dynamics of human behaviour. He is a next-generation keynote speaker and workshop facilitator who captivates audiences all over the world with his passionate, energetic and witty presentations and sessions.
He has presented his perspective on future change for more than ten years at companies like Ikea, Aon, Deloitte, Tetra Pak, Samsung, Unilever, Rabobank, Philips, GDF Suez, Citywire, RTL and Coca-Cola.
He is also a co-producer and lecturer of an executive training programme at the University of Utrecht that focuses on sociocultural trends and how these can be practically applied to business strategy.
Thimon is a former insights and strategy director at TrendsActive, researcher at FreedomLab Future Studies and editor-in-chief of RELOAD Magazine. Today he is founder and director of Whetston, a strategic foresight think tank.

Core Faculty – 
Driving strategic foresight and future change

Stan Steverink pushes boundaries in leadership development. Together with his clients he designs, delivers and facilitates international development and transformation programs for executives, talent and key teams. Essential to his approach is connecting the bigger picture of the business and organisation with personal leadership.
Professionally, Stan began in new media during the Internet boom. In 2002, he started at the leadership development agency IMEC as consultant, later becoming Managing Director and co-owner. In March 2012, IMEC was sold to the global HR firm Hay Group, today KornFerry. For four years, Stan acted as Director Leadership Development at Hay Group. Eventually, his entrepreneurial spirit prevailed, and in 2016 he restarted the independent leadership development agency with a new name: CircleRadius.
Stan studied Economics and Social Psychology at the University College in Utrecht, and Philosophy at the University of Amsterdam. He complemented his education with studies at the Haas School of Business, Colombia School of Business, Harvard Business School and Amsterdam Institute of Finance.

Facilitator & Sparring Partner - 
Pushing boundaries together

Ramon Vullings believes that there are positive alternatives to the way we interact as people and shape organisations. He focuses on changing life for the better based on more elegant solutions found in other domains.
His latest research is now manifested in the management book Not Invented Here: Cross-Industry Innovation, looking at what organisations can learn from other sectors. Ramon has previously written the management book Creativity in Business, on applied creativity.
People who have seen Ramon in action know what a performer he is. Seeing and hearing Ramon speak about a wide variety of creativity and innovation topics is always thought-provoking.
With more than 15 years of experience in the field of creativity and innovation consulting, in nearly all industries and on all five continents, Ramon is able to relate to the specifics in any given sector, infusing people with tangible ideas, spot-on inspiration and actionable advice. His presentations are highly interactive (including for large groups) and are always tailored to his audience. The combination of speaker and Master of Interaction is where Ramon excels.
As action-advisor, Ramon gets very enthusiastic about cross-industry innovation, new business models, working on leadership, and increasing the innovative capacity of people and organisations. He is co-founder of the innovation network organisations new shoes today and 21 Lobsterstreet. He is also chairman of the (non-profit) European Association for Creativity and Innovation for sharing, developing thought leadership and linking the international creative community. Finally, Ramon is connected to the Fontys University of Applied Sciences, where he acts as Executive Professor for cross-industry innovation.
Ramon loves to travel. He is Dutch living in Antwerp, Belgium, and works globally to service clients.

Facilitator & Core Faculty - 
Increasing innovative capacity

David Pearl is an innovator who works in business, the arts and social change.
A performing artist by background, he was boy soloist at the Royal Opera House, where he first sang with Placido Domingo at the age of nine. He has toured the world as an orchestral player, written for the great Stanley Kubrick, presented a music series on BBC2, and set up two mould-breaking opera companies.
In 1994, when one of the world’s leading service firms was looking for a radical new way to boost creativity, they asked for David’s help. Two decades on, he’s a creative confidant to the leaders of some of the world’s most prominent businesses, helping the leaders and their teams perform at new levels. He is best known for the artful way he designs, orchestrates and animates high-stakes business events, his inspiring keynotes and accessible business books.
Beyond business, his non-profit venture Street Wisdom transforms ordinary city streets into extraordinary learning zones. Founded in 2012, it’s already active in 18 countries. Meanwhile, David keeps his own performance skills honed in the knife-edge improvised shows of his company Impropera.
David lives in London and Piedmont, Italy, with his wife Joanna – who he met during an impromptu serenade under her window – and his two children Elsa and Zach. He’s a private pilot who’d love to fly more, and a passionate road cyclist who’s always thinking about that next hill.

Core Faculty - 
Helping leaders perform at new levels

Stephan Thoma is a former global leader for Google’s enterprise-wide Learning &amp; Development team. His work spanned leadership and management development, broader employee and peer-to-peer learning strategies and deliverables. A key focus was to ensure the learning agenda supported Google scale for the future while retaining and building its innovative and distinct culture.
Stephan currently works as an independent consultant. He focuses on supporting smaller tech companies scale rapidly and thrive for the long term, and larger more traditional companies that seek to refresh and renew their people culture and talent strategies, often in the face of digital disruptors in their sector. Prior to Google, Stephan has a wealth of experience in senior Talent roles, primarily in major US corporations, such as Cisco Systems, 3Com and GE, where he worked with GE’s ‘Crotonville’ Leadership Institute as well as holding line roles.
By combining current 21st-century Silicon Valley best practices with the prior generation&#8217;s best-practice thinking, Stephan is in high demand as an advisor, coach and speaker. An engineer by origins, he still sees himself as a rusty engineer, as he is really motivated to build systems, albeit people ones now, and help to optimise them to run for the long term.

Sparring Partner - 
Applying Silicon Valley best and next practices

For more than 13 years, Henca Alberti has worked as an organiser and producer of leadership programmes and journeys all over the world. This enables her to combine her love for traveling with her passion for working with inspiring teams. Today she organises leadership programmes, events, business trips, strategy sessions, and much more; preferably set up from a creative perspective and in inspiring locations.
Henca studied Public Administration in Leiden, after which she has worked and travelled around the world. She lives with her husband and three daughters in Scheveningen, and loves travelling, yoga, outdoor adventures and food.

Project Manager - 
Enabling exceptional experiences

Barbara has over 30 years of experience in leading teams, organizational analysis and development, in-depth personal development and guiding decision-making processes. As a volunteer and building on her training and work in the US, Barbara has 15 years of experience in training therapists and offering psychosocial support to people all over the world dealing with trauma or crises. 
Currently Barbara is active as boardroom consultant, conflict resolver and worldwide facilitator in tailorized leadership programs supporting foundational personal growth. Her teachings about the mind and beyond integrate philosophy, psychology and science around the mind-body connection, combining theory with felt experiences. Gaining more understanding of one’s inner life and easily learned skills almost instantly lead to increased well-being and more authentic leadership. That’s why her work is Barbara’s passion. 
Driven by curiosity, their love for one another, a desire to explore, expand their minds and to experience freedom, Barbara and her husband travelled the world. After her husband’s death, Barbara’s journey was inwards, where she ultimately experienced another kind of freedom. Immediately after her husband’s passing she knew that her personal life was over and that another, more transpersonal life of serving would unfold. She now dedicates her time to enhancing true leadership, since she feels today’s world is crying out for people who lead their lives with wisdom, grace and the power that comes from a sense of our connection with each other and all of life.

Facilitator & Core Faculty - 
Dedicated to enhancing true leadership

Over the years, Willem gained his experience in leadership development at different senior HR positions at large multinational companies, such as Ahold, Heineken, Grandvision and FrieslandCampina. 
Since 2006, Willem specialized in top team effectiveness and personal leadership coaching, and worked in very different settings; listed companies, partnerships, private equity, cooperative ownership, and also with very diverse type of organizations; different industries, size and ownership structure. 
Willem is a psychologist in business, holding a MSc in psychology, including intensive training in coaching and counselling. He applies social and clinical psychology. 
Willem has a passion for being out in nature. At home he also grows his own vegetables. According to Willem: Digging in the soul is useful, but digging in the ground is perhaps even better.

Team & Individual Coach - 
Helping leaders grow as human beings

Through working within various corporate environments, Nadja discovered her talent to seamlessly translate what’s needed on paper into a impactful experiences. In 2022, she started working independently as a project manager. 
She currently organizes inspiring events and business trips, and also has the ability to manage and oversee complex long-term (leadership) programmes. Her strong communication skills allow her to build genuine connections and meet each client’s needs, leading to meaningful and successful events.
Nadja studied History at the University of Amsterdam and majored in International Relations. She lives in Amsterdam with her boyfriend and their black cat, spends her spare time singing in a band and travelling the world whenever she can.

Project Manager - Enabling impactful experiences

<h2 class="has-circle">People</h2>
The quality of leadership development depends on the people involved. Over the years, we have carefully grown our core crew and global network of partners and experts.
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Core crew

Privacy statement

About

<div>
<h2>I’m Stan Steverink</h2>
<h2>Founder and Director of 
CircleRadius.</h2>
</div>