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About us

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.

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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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Courtney Henderson
UK
Courtney andHenderson
Software Developer

I’m Impact’s resident back-end developer; working to build robust, efficient, and reliable systems to underpin our experiential learning platforms. I take pride in collaborating with like-minded individuals who share common interests and values, collectively unlocking each other's full potential. As a Lake District native, I feel a strong connection to the area in which Impact is headquartered and have seen first-hand the local and global effect that Impact achieves.

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Sarah Osteen
USA
Sarah andOsteen
Senior Consultant

I have spent my career exploring, researching, teaching, coaching and practising leadership skills. I love working with individuals and groups to tackle hurdles and develop strategic initiatives. When I am not designing programs, I like to spend time with my son and my husband building forts out of driftwood or laughing with friends in the beautiful pacific northwest.

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Dave Hardegger, Impact
New Zealand
Dave andHardegger
General Manager, New Zealand
Asia Lead - Solutions & Practice

I love what I do! Each day is so different and brings challenges, interactions, and rewards. In my different roles I get to lead, mentor, coach, create solutions, and deliver life-changing experiences. I’m lucky to be surrounded by amazing colleagues - whom I get to call friends. I relax by spending time in nature – usually with my loving family but with the occasional solo adventure as well!

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Andy Dickson, Impact International
UK
Andy andDickson
Head of Global Customer Solutions Development

I have spent my working life helping organisations, teams and people to be the best that they can be. I believe in the power of expertly designed and facilitated experiential learning and the exciting potential that lies within every person given the right opportunity. In my work I believe that managers and leaders have a responsibility to ensure work is exciting, fulfilling and aspirational for the people working in and with their organisations.

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Michelle Dong
China and Hong Kong
Michelle andDong
Senior Consultant

In all my work, I am driven by a profound interest in what moves and motivates people. I believe that everybody can make significant improvements through continuous self-exploration. I deliver individual coaching, workshops and training programs with the focus of increasing the potential of Senior Managers and High Potentials and developing their team leadership skills as well as helping them with behavioural change initiatives which naturally bring along performance improvements. 

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!

Joe Dickson
UK
Joe andDickson
Business Development Executive

Since joining Impact in 2019, I've had the pleasure of working in the Business Development team, supporting our global BD teams with Lead Management. My passions lie in the outdoors, sports and surrounding myself with great people. Outside of work, you'll find me pottering around the Lake District fells on my mountain bike.

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Sam Rostas, Impact International
UK
Samantha andRostas
Global Lead

After 10 years leading the UK, I am now in a global role focused on two areas: one leading a people project, the other focused on marketing. I grew up through Impact as a marketer and love the buzz of building business through brand and storytelling. My other passion is the people and culture here, so this is the ideal combination for me. When I’m not working, I love spending time with my family, enjoying the outdoors and practicing yoga.

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Chiara Fregonese
Italy
Chiara andFregonese
Senior Consultant and Head of Solutions

As a consultant, organisational psychologist, account manager and researcher…I endeavour to encompass all the different aspects of life in the organisation! To me the organization is a magic happening between individuals, groups and their work contexts. I deal with the entire consulting process: from the proposal development, to the client management, intervention delivery and evaluation process. I love the countryside, baking cakes & capoeira!

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Daniel Giejbatow, Senior Consultant
Poland
Daniel andGiejbatow
Senior Consultant

As a consultant and the manager, for the last 20 years, I was focused on practical aspects of business transformation. Managing HR field I had a chance to collect best practices within telecommunication and financial sectors. I have experience in leading mergers and acquisitions of a large organisations. I am a psychologist and psychotherapist by education and graduated with MBA and AMP business studies. I love outdoor activities, especially in the mountains.

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Sara Baranzini, Impact Italia
Italy
Sara andBaranzini
Senior Consultant and Executive coach

I have experience as an HR Manager in multinational and Italian companies, managing L&D, recruitment, employees relations, coupled with across-the-board experience in consultancy projects on those subjects. Since 2013 I have been supporting organisations to change with a focus on learning and development with main focus on leadership, individual effectiveness, business coaching and change management.

 

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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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Luigi Sabatino
Italy
Luigi andSabatino
Senior Consultant and Facilitator

I love my job at Impact because it allows me to connect with people and put those skills to good use. As a consultant and facilitator, I enjoy helping people explore and tackle issues, increase their awareness, and uncover their potential. I enjoy jogging, hiking, studying foreign languages, and hanging out with friends on my days off.

Jo Appleby
UK
Jo andAppleby
Head of Partnerships

I design projects to bring Sustainable Development Goals to life and get them into every programme we deliver. Globally. Universal in nature and relevant for all, the SDGs tackle the biggest issues facing our planet and everyone on it. I sit on the consultant team, support our Community Action Learning function and the wider and I’m the Impact UK representative for UNGC. I love running in the fells.

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Shiwali Daryapurkar
USA
Shiwali andDaryapurkar
Program Manager

I enjoy using my strengths in operations management to bring organisations into the chaos and to connect people with resources. I look forward to supporting the team from behind the scenes to execute the programs successfully and meaningfully. In my personal time, you will find me traveling, cooking, event planning, reading, and involved in theatre and film productions.

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Yuki Endo, Japan
Japan
Yuki andEndo(Snowpea)
Client Partner

I started my career at a global automobile parts manufacturing company, where I got interested in people development. Currently I am enjoying my journey at Impact, improving my knowledge and skills, to find the best solutions for our clients. I enjoy travelling both in Japan and overseas. I like reading books and staying indoors, but also enjoy scuba diving and going outside to see friends and new experiences.

Fabio Gabbiani
Italy
Fabio andGabbiani and
Senior Consultant and Key Account Leader

With over 26 years as L&D and Internal Communication manager in large multinational companies, I’ve developed deep knowledge in consulting roles, building trusting relationships with all levels of an organization, implementing complex projects. I love my job, the countryside, animals and sports.

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Andrew Robinson, Impact International
UK
Andrew andRobinson
IT Manager

I work in our busy IT department, helping with all things technical. I have often been referred to as a “Button Manager”, if it's got a button, then I manage it! I enjoy working in IT as it allows me to interact with every part of our business all over the world. I am a keen cyclist and enjoy working in our HQ in the English Lake District, a great place for outdoor adventures. I have worked for impact for over 15 years and am very proud of all that we achieve.

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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Senior Director - Client Services, Americas
USA
Martin andSmith
Senior Director - Client Services

I lead the overall relationship with our clients, working closely with them and our brilliant Impact team to build powerful solutions to their most pressing challenges. I’m a bit of an oddity - an Aerospace Engineer by training and experience who, for the last 20 years, has found my passion in helping others thrive at work.  I‘m based in Chicago with my wife, and when not running on the lakefront, I’m probably wrestling with an ornery cat.

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Delfino Corti
Italy
Delfino andCorti
Senior Consultant and Executive coach

I see life as a gift and a journey. I bring in my backpack some of the experiences I had the luck to have: nuclear engineering and 25 years as a manager in various industries in various parts of the globe. And then Impact. I feel excited when I see the very essence of situations emerge: in individuals, groups, communities, and organisations. I am fond of endurance sports and am a passionate soul explorer. 

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Maggie Pearce, Impact International
UK
Maggie andPearce
Head of Design

I have a global role around developing and sharing our learning practice, which I combine with designing and delivering some of our more complex client solutions. I have developed and pioneered ‘Solution Mapping’ – Impact’s consultancy framework, and specialise in evaluation strategies, as well as designing leadership action based simulations. I'm Impact’s unofficial Chief Cartoonist and, wherever possible, I use cartoons to bring insights and concepts to life.

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Josh Williams, Impact
UK
Josh andWilliams
Consultant

I enjoy working with people, teams and organisations to perform to their potential. My outdoor leadership degree, time working in the outdoors and coaching has built a foundation for me which I have had the privilege to build upon for the last eight years at Impact working as part of the delivery team with various clients. I have a keen interest in areas of the business such as leadership development, wellbeing and experiential learning.

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Leadership

The leadership playbook: executive summary

Get hands on with our interactive leadership playbook, shaped by 45+ years' experience working with some of the world's biggest organisations.

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Leadership
News

2025 Training Industry Top Training Companies Lists: Leadership Training 

Training Industry, known for its independent and rigorous assessment of the training marketplace, has recognized Impact as a Top 20 Leadership Training Company for the 15th consecutive year.

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Change
Innovation & Creativity
Leadership

C-level leaders on navigating complexity

Discover what it means to lead in today's global business environment through our insightful eBook.

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Emerging Talent
Transformational Leadership

Frontline leadership program for Orica

A 12-week blended program designed to help frontline leaders develop foundational and practical skills to be more effective in current

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Change
Digital & Technology
Leadership

Podcast: Is BANI the new VUCA? with Jamais Cascio

Jamais Cascio created the BANI framework in 2018 and six years later, Impact is the first UK/US based organisation to invite him to speak about it. In this podcast we explore what BANI is and how...

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Change Management
Transformational Leadership

Empowering transformational change through leadership with Charter Manufacturing

Charter Manufacturing’s multi-award-winning programs have produced leaders who are enabled to be agile and lead transformational change.

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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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