We keep our work ethics at all costs.
We share common principles and ways of working.
We strive to continuously improve our services and offer unique and cutting edge solutions.
We work with client-organisations to increase productivity and people well being.


Olympia Mitsopoulou founded Atom Wave (then H2gO) in 2002. Since then, Coaching programs for over 100 client organisations internationally have been designed. Amongst client organisations are: AB, Alpha Bank, AXA, Eurobank, IKEA, L'oreal, Philip Morris, Vodafone.

The Atom Wave "Solution Focused Coaching Skills" program for Leaders was shortlisted for the 2014 European and Mentoring Coaching Council (EMCC) Best program award. In 2017, the ICF ACSTH "Internal Coach Certification" program was designed to address the challenges of the internal coaching. Measuring business impact and ROI of coaching is an inherent part of Atom Wave programs and it has developed the "Zoom In - Zoom OutTM" model for measuring Business Impact and ROI of Coaching.

Olympia is credentialed PCC coach by the ICF (International Coach Federation), Program Designer and Director of the Atom Wave "Internal Coach Certification" ICF ACSTH program , Certified by Coach U, Certified by SolutionSurfers in BRIEF Coaching and Team Coaching, and by AXIALENT in Conscious Business coaching. She is also a trained assessor for the European Individual Accreditation and the European Quality Award for the European Mentoring and Coaching Council. Her academic background is in Occupational Psychology (B.A. American College of Greece & M.Sc University of Wales, College of Cardiff).

Olympia is based in Lausanne, and splits her time between working in Switzerland and Greece.

Christiane KOSUB, PCC

Christiane is a Professional Certified Coach by ICF (PCC), Mentor-Coach ICF, Group Dynamics Trainer (DGGO) and EFQM (European Foundation for Quality Management)-Assessor.

 She brings more than 25 years of experience in management development for profit organizations in the pharmaceutical, automotive, telecommunications and insurance industry amongst others.

As Personal Development Manager and Department Head of Quality Management in an insurance company and Manager of Seminars in a software company, Christiane has gained internal experience of different organisational cultures and roles. Her intercultural competence widened while she lived and worked in China at Renmin University Beijing as visiting professor. 

Her focus is change management, leadership, team and individual development in an international, fast-moving environment. She is a communications expert.

For the last couple of years her main focus has been on solution focused coaching with senior managers, career coaching, mentor coaching, intercultural training and working as a supervisor in the CAS (Certificate of Advanced Studies) “Leadership in Health Care”. 

Her aim is to support people discovering and using their resources to achieve their best hopes by strengthening their self confidence.

She is fascinated by working in partnership with her clients, sharing insights, bringing humor and encouraging flexibility.

Since more than 10 years she is living in Switzerland close to Basel.




Marialexia Margariti is an organizational psychologist (M.Sc.) & Certified Psychotherapist (M.A., ECP), Professional Certified Coach by the ICF (PCC), EMCC Assessor of training providers (EQA) & coaches seeking individual accreditation (EIA) and supervisor.

She spent a large part of her career in the corporate world, starting in the area of Human Resources, and later in the areas of brand management and advertising at European and global levels.

She has coached senior managers, individually & in teams, for more than 1.500 hours and has worked as senior trainer in large coaching & mentoring programs at local and international levels.

In the last couple of years she is supervising teams of students in coaching training programs (internal & external coaches).

Marialexia is currently Vice President Quality in EMCC's International Executive Board responsible for matters related to Ethics, Regulation, Diversity & Inclusion, competencies & CPD for coaching/mentoring/supervision. She is a founding member and former President of EMCC Greece. She is also member of European Association of Psychotherapy (EAP), National Organisation of Psychotherapy Greece (NOPG) and International Coach Federation (ICF).

Katy Charalambidou, ACC

Katy brings to coaching Balance and Maturity. The combination of her 30+ yrs of experience in People Development combined with her entrepreneurial background (also owner of a successful advertising-graphic design agency), offers clients practicality combined with Emotional Intelligence.

Katy has participated in large leadership development and coaching programs for Alpha Bank, Nestle, Eurobank Cards, Papastratos Philip Morris Int'l , AIG, Piraeus Bank, National Bank of Greece, Makro Cash & Carry, Johnson & Johnson, Astrazeneca, Hellenic Petroleum, Hellenic Aerospace Industry.

As an executive coach, she has more than 800 logged coaching hours (Alpha Bank, JTI Hellas, AXA, LeasePlan Hellas, Alcon, Nestle, CSL Behring, Astrazeneca, FHP-Vileda, Randstad Hellas, Persado, Greenpeace, Iberdrola, etc) within which she has coached more that 250 senior managers. She has worked as Senior Project Manager for Thomas International (Personal Profile Analysis) - SELECON CONSULTANTS, working on applications of Thomas system, consulting & training. She has also worked as Project Manager for Grid Seminars of Scientific Methods - INTERSYSTEMS MANAGEMENT CONSULTANTS, working on Marketing, client development & implementation of Grid management programs and as Senior Management Trainer for ACHIEVE GLOBAL - Professional Selling Skills (PSS)

She is a founding member of the Hellenic Coaching Association (Affiliate of EMCC) and ICF Greece Chapter Katy speaks Greek, English and Turkish.

She is Associate Certified Coach - ACC (ICF - International Coach Federation), trained Professional Coach (Core Essentials Coaching Skills Program - Coach U, UK), Diploma in Brief Coaching (Solution Surfers), Certificate in Solution Focused Team Coaching (Solutions Surfers), ICF competency Brush-Up Program (Positive Life Works), Certified Thomas System Analyst (Thomas International - PPA System), International SystemicTeam Coaching (Academy of Executive Coaching).

Business Partnerships:

A marketing communications and people change management expert Alan Kay, blends years of applied industry experience and best practices delivery of practical tools on leading people to solve problems and be creative about making solutions happen.

Currently, Alan is the principal of a change management consulting business, the Glasgow Group serving a diverse group of clients in Canada, the US and Europe.

KarmaGenes, meet yourself.

We are business partners with Karmagenes, a Swiss biotech, which has come up with an innovative way of determining the contribution of genetics and the environment to your personality traits. Using a sample of your saliva, their advanced molecular analysis methodologies identify the link between genetics and 14 behavioral characteristics like innovation, spontaneity, strategy, risk taking, decision making, confidence, stress tolerance, calmness, optimism and self awareness.

We use Karmagenes analysis for our executive coaching assignments to support our clients discover their strengths and formulate their own exciting future.