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Meet the team

Impact is bursting with energetic, talented and passionate people who want to make a difference. Our people work from over 30 global locations.

Warangkana Posinsomwong
Thailand
Warangkana and(Lek) andPosinsomwong
Asia Pacific Finance Director

I'm based in Thailand, a country of beautiful islands, good food and nice people. I have a lot of fun working with people around the world. I have more than two decades of international finance and accounting experience. My real challenge is working with Inland Revenue offices in different countries! I love to explore the world through reading and travel and one day wish to have a little cafe where people can sit and have a coffee or few drinks and craft together.

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Erica Partelli
Italy
Erica andPartelli
Senior Consultant and Head of Operations
As a consultant in Impact I like to bring fresh perspectives, energy and curiosity to the problem solving process. With a strong organisational psychology background and an drive for project management, I work with genuine passion for innovation and for the opportunities that the digital transformation is offering. My main passions include travelling, swimming and playing board games.
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Tony Ren, Impact
China and Hong Kong
Tony andRen
Country Manager

Having worked at Impact's UK HQ and Tokyo office, I have been heading up Impact China and developing new business in China and Asia Pacific since 2009. As a professional consultant, I have over fifteen years of management experience covering strategic planning, organizational effectiveness, business development, and worldwide operational excellence. I am extensively involved in the development and delivery of talent development projects at all levels of organisations. 

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Dileepan Dhanasekaran
Singapore
Dileepan andDhanasekaran
Digital Business Support Analyst

Joining Impact was one of the best decisions I have ever made. I am responsible for digital enablement and transformation across our global business, data protection programmes, amongst others. I really love the culture at Impact as it is very people-centric, focus driven and a dynamic workspace. Outside work, you will find me playing badminton, swimming, taking long drives and hanging out with friends.

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Caitlin McAlister, UK
UK
Caitlin andMcAlister
Business Development Executive

As a Sales Professional with extensive knowledge of account business development and client relationship management, my passion lies in building great relationships with clients and really getting to know them in order to create customised solutions that help them to achieve their goals. Outside of work you can find me in the gym, or walking the beautiful Lake District fells with my camera in tow.

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Mario GianAndrea, Impact Italy
Italy
Mario andGianAndrea
President and Founder

I’ve been many in my working life: an HR Director, an entrepreneur, a leader, a coach, a salesman, a visionary, a confidant, a manager. And a friend. And I am still excited (and sometimes anxious) when I meet a new group of people. I genuinely enjoy it! This is the reason I'll probably work for another decade! The only difference compared to the past: today I can afford to only work on projects and with people that I really like and that gives me the feeling that it will be great fun!

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Holly Higham Impact International
UK
Holly andHigham
Global Lead, Marketing

My job is to share amazing client stories with the world through integrated marketing campaigns. I love live events and building Impact's community, as well as research and content creation. I live for adventure...and cake!

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Yukiko Asano (Coco), Impact International
Japan
Yukiko andAsano(Coco)
Client Partner

I have worked at Impact Japan since 2015, coordinating the delivery of programmes. I support our consultants and delivery operations. What makes me happy is seeing my colleagues, clients and participants smile, as my job is supporting them. My hobby is collecting Starbucks Coffee mugs from around the world, although I don’t drink coffee personally!

Akira Matsumoto (Mikey), Impact International
Japan
Akira andMatsumoto(Mikey)
Assistant Manager, Facilitator

With nearly 18 years in the retail industry, I held roles such as sales, store manager, trainer, and area manager. These experiences taught me that when people grow, organizations grow. Supporting others made me reflect on my own growth and whether I still had something to offer. To challenge myself, I moved into a new industry. Now, I work to create training experiences that resonate emotionally and leave a lasting impression—while continuing to grow with my clients. 

Geraldina Sordi
Italy
Geraldina andSordi
Consultant & Sales Hub

Since I've joined Impact, I feel like my professional development grew exponentially. I feel very empowered by the company and by the values we bring each day into work. My goal is to learn how to best support our clients in every step of a consulting journey, as well as my colleagues, bringing a real change to the process. As a way to recharge I love to take long walks with my dog. My favourite sport is to hang out with friends, especially if in foreign countries!

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David Williams, Impact International
UK
David andWilliams
The Boss!

I co-founded Impact in 1980 to explore adventure and experiential learning in people development. It worked! We now inspire and develop people worldwide. Shared values, a common purpose and a spirit of adventure bind us together. With over 200 colleagues working in the UK, Europe, America and Asia Pacific, we have a solid reputation for enabling clients to build leadership capacity and navigate complex change. To stay grounded, I rear rare breed cattle and sheep.

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Agnieszka Nowak
Poland
Agnieszka andNowak
Account Manager

After years of being a client and fun of Impact, I became part of this amazing community. My extensive professional experience in HR, across various roles and industries, proves invaluable in conversations with our clients. At Impact, as an Account Manager, I embrace the essence of lifelong learning, discovering something new every day 😊 Personally, I have a passion for traveling, reading, and forest walks.

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Ava Gayowski
USA
Ava andGayowski
Business development & marketing coordinator

I came to Impact as an Intern in 2023 and here I am again in 2025! That’s because Impact is a great place to learn and the people are even better. Impact’s mission to help people learn and grow is something that resonates with me deeply. My educational background is in mass communications with specialties in PR and advertising. I’m the liaison between our marketing and business development team and my job is to enhance our digital marketing and BD function. In my free time you can find me surfing out on the waves (usually wiping out), horseback riding, or behind a guitar and a microphone. 

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Hillary Lawless Impact
USA
Hillary andO'Dell
Project Manager

I am a program manager, and I love that every day is different, from working on different tasks involved to make a program run smoothly to talking and meeting clients. I come from a hospitality background, so I love the client-facing aspect of my role here at Impact, as well as making sure every piece of the program is on schedule. Outside of work, I am always doing something like teaching dance, travelling, and going to the beach!

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Karen Jaques Impact International
UK
Dr andKaren andJaques
Associate

I love exploring issues that my clients face and helping to find practical solutions. My other roles include developing Impact’s thinking around leadership and team development, and using systemic perspectives to encourage responsible leadership in business and society. Convincing, articulate and credible as a facilitator, I'm passionate about helping people realise their full potential...including myself! I love ski-mountaineering and any ways to access wild places.

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Cassie Cuppek
USA
Cassie andCuppek
Senior Consultant

When asked, "What do you do for work?" it is not uncommon for me to respond, "Light Bulb Moment Technician". I have been fortunate to be filled with such energy through my talent, leadership, and organisational development work. When I am not working, I take my role as Aunt Cassie with my husband, Josh, very seriously! It is the greatest thrill to teach them to ride motorcycles, do yoga, and explore the world.

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Vesna Lorenc, Senior Consultant
Poland
Vesna andLorenc
Senior Consultant

I have been supporting people in communication for 20 years. Initially as a consultant and currently as a trainer, coach, and mediator. I am passionate about people and the complexity of human nature, and like to help tame this complexity for a specific purpose. Socially involved, I'm also a mother of three. Between all this, I find balance in meditation, yoga and nature.

Soledad Severino, Impact
Australia
Soledad andSeverino
Program manager

I had never worked alongside such passionate people until I joined Impact almost three years ago. From day one, I’ve felt deeply aligned with the company’s values and principles, which continue to make my work incredibly meaningful.  As a Program Manager, I’m driven by delivering high-quality results while bringing positive energy to every project and team I work with. Outside of work, I enjoy spending time in nature and making the most of every moment with my family. 

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Fabio Sparatore
Italy
Fabio andSparatore
Managing Partner and Executive Coach

After many years in big Italian firms, I now help clients understand and achieve their development goals. In Impact since 2003, I have gained experience in HR processes, organisational consultancy, assessment, training and development of managerial competences and leadership. I love mountain biking, silly jokes, deep reading, socialising and…meditating too. Whenever you want to work hard while having fun, call me!

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AlassaneDiop
Italy
Alassane andDiop
Consultant and Facilitator

I’m a consultant with an international and multicultural background and approach my work with contagious enthusiasm and commitment. My experience working with both large corporations and small startups gave me a deep insight into overcoming business operational hurdles and developing proactive trainings paths to grow and enhance teams. Over the years I’ve gained experience in facilitating and promoting dialogue in B2B partnerships and creating organizational innovation projects.

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Emaya Rajasegran
Singapore
Emaya andRajasegran
Programme Manager

I enjoy seeing others achieve in their own unique ways; therefore,  consider myself privileged to be a member of Impact's vibrant team. Being a member of an organisation that puts people first and provides worthwhile programs to enable people to take charge of their own development is satisfying. Being out in nature allows me to be in my zen space. I love all kinds of bridges, black-and-white photos, and trains.

Simon Brown
UK
Simon andBrown
Accountant

AKA Bloodaxe. I am an accountant at Impact. When I am not at work, I enjoy spending time with my family, cycling and heavy metal. Not all at the same time, though – that’d be dangerous.

Haruka Maruyama (Maruko)
Japan
Haruka andMaruyama(Maruko)
Assistant Manager, Planner

Working as a planner at Creative and Marketing Department since 2019. Before Impact, my career was mainly on the position of sales and marketing at the bank and advertising agency. My focus is on the capacity building for both individual and team. Virtual team building is one of the fatal themes because I am working as a full remote member. I love traveling around the world with my backpack and enjoying beautiful local delicacies!

Daniele Filzi
Italy
Daniele andFilzi
Experiential Solutions Specialist

With over 20 years at Impact, I've contributed to the design and delivery of over a thousand programmes. And what if the secret of success is to continue to refine something even if you've done it dozens of times? Outside of work, I like gardening and interior design. I live on the crest of an extinct volcano, with the Mediterranean Sea to my west. After sunset I keep fit by jogging around a golf course.

Our awards

Year after year, we continue to be acknowledged for the quality and effectiveness of our partnerships with clients and for our own work on building Impact as an organisation worth working for.

2026 Training Industry Top 20 Leadership Training Company
2026 Training Industry Top 20 Leadership Training Company

Impact is a 2026 Top 20 Leadership Training Company. Training Industry independently assess the training marketplace for top providers. Their Top Leadership Training List, based on capabilities and expertise, includes Impact for the 16th consecutive year. 

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Chief Learning Officer gold award 2025
Gold Excellence in Partnership Award from Chief Learning Officer 2025

Impact won the gold award at the Chief Learning Officer 2025 Learning in Practice Awards for Excellence in Partnership. This recognises our support of Bristol Myers Squibb in implementing a learning and development programme.

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