Our Team

Our international team combines over 20 nationalities and brings together a plethora of skills, backgrounds, interests, and education which enables us to conquer the challenges of renewable energy sales, PPAs, and renewable energy market risks management.

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Jana Brankovic

Operations Manager

Jana has over 20 years of experience as an Operations & Quality Manager. Most of them she spent in the international energy and assurance field.

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Michael Waldner

CEO & Co-Founder of Pexapark

Michael has 20 years of experience in renewable PPAs, international energy trading, origination and portfolio management.

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Bohdan Lypkan

Senior Frontend Developer

Bohdan is proactive Front-End Developer with over 5 years of experience in developing, designing and optimizing of web applications.

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Florian Müller

CTO & Co-Founder of Pexapark

Florian loves building software and has over 15 years of experience in creating applications. He holds a PhD in Computer Science.

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Amanda Niklaus

Senior PPA Transaction Manager

Amanda has 7 years of combined experience in providing analytics for PPA transaction and analysing power markets and trading strategies for renewable assets across Europe, the US, and Australia.

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Justin Owen


Justin has 20 years of Finance and Accounting experience in the Silicon Valley and Enterprise Software companies.

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Luca Pedretti

COO & Co-Founder of Pexapark

Luca has 15 years’ hands-on experience in energy risk management for renewables in open markets – valuating, structuring, negotiating and managing PPA transactions across Europe.

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Gadi Eichhorn

Senior Software Engineer

Gadi is a senior software engineer with BsC in Aerospace and over 20 years experience in enterprise software development and consulting.

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Karolina Hartzell

Senior Risk Manager

Karolina has nearly 5 years of experience in energy risk management with a focus on structured products. She holds a bachelor's in Finance and a master's in Data Analysis.

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Werner Trabesinger

Head of Quantitative Products

Werner has been active in energy trading for 13 years, including managing a structured trading desk at Axpo trading. His expertise is in structuring of complex transactions and options trading. Werner holds a PhD in Physics from ETH Zurich.

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Sumon Vangchuay

Senior Event and Social Media Manager

Sumon brings ten years of experience in managing expert events & knowledge platforms. She holds a PhD in International Law.

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Nazar Kushnir

Senior Backend Engineer

Nazar is Java Senior engineer with more than 10 years of experience focused on developing server side enterprise applications.

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Andriy Mahats

Full Stack Engineer

Andriy brings experience in building web and server-side applications. He holds a MSc in Computer Science.

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Sandra Wycech

Product Manager - Renewables Community

Sandra has 10 years of experience working with high-growth startups in the areas of operations, community building, product, and project management.

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Manuel Damsohn

Head of Data and Customer Success

Manuel has more than 10 years of experience in data analysis in the energy and heavy industry.

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Jonas Nihoj

Head of Portfolio and Trading Services

Jonas has more than 15 years of experience in energy trading and portfolio management. He has been structuring, valuating, negotiating, and managing the risks of long-term contracts incl. PPA’s.

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Polina Probylova

Product Manager

Polina has experience in building and optimising early ventures and oil & gas engineering. She holds a BEng in Sustainable Energy and an MSc in Innovation, Entrepreneurship and Management.

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Alexander Radzishevsky

Team Lead Transactions Development

Alexander is a Software Engineer with several years of experience in server side, web and mobile application development.

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Roman Hrechukh

Quality Engineer

Roman brings 4 years of experience in logistic and financial IT quality assurance (web and mobile applications).

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Debbi Bavin

Product Marketing Manager

Debbi is a Chartered Institute of Marketing (CIM) qualified marketeer, experienced in product marketing for energy software solutions.

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Kashif Javaid

Head Of Sales

Kashif has nearly 15 years’ experience in the energy trading space in a variety of consulting and sales roles. He holds a PhD in Aeronautical Engineering from Imperial College London.

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Mathieu Ville

Head of PPA Transactions

Mathieu is an experienced renewable energy investor with over €1bn financing and tens of PPAs structured and successfully executed over the past decade.

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Olena Ohuryayeva

Software Engineer

Olena brings over 5 years of practical experience in frontend development.

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Erik Landstrom

PPA Transaction Manager

Erik has 10 years of experience analyzing energy markets and advising energy investors in the US, Mexico and Sweden

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Taras Stasyuk

Software Engineer

Taras brings over 10 years of experience in server side development.

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Lama Bou Akl

Advisory Intern

Lama is finalizing her Master’s Degree in Management Engineering at Politecnico di Milano. She is specializing in Energy and Environmental Management with focus on PPAs and balancing markets.

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David Willemsen

Head of Risk Advisory

David brings 10+ years of experience in structuring, negotiating and managing offtake agreements. He has signed numerous PPAs across Europe for large developers with both utilities and corporates.

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Miljan Kosanin

Senior Software Developer

Miljan has 10 years of experience in professional software development, mostly using Java. He holds a Master of Science in Computer Science

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Viktor Kolodrevskiy

Software Engineer

Viktor brings 10+ years in Java Software Engineering.

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Zuzi Tuckwell

Customer Success Manager

Zuzi spent over 11 years as a senior sales and account management executive in the energy market both in Europe and the Asia- Pacific region. Zuzi has worked with a wide range of energy, utilities, trading and infrastructure clients helping to deliver business critical pricing and market intelligence solutions.

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Alexandra Münzer

Head of Data Sales

Alexandra brings extensive experience in leading the Norway-based renewables analyst Greenfact as well as in trading of environmental commodities such as renewable gases. She holds a PhD in physics from Technische Universität München.

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Florent Petitfrere

Head of Marketing

Florent brings over a decade of experience working in advertising. He specialises in digital marketing, SEO/SEA,  content marketing, lead generation, and analytics.

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Oleg Shynkar

Team Lead QA

Oleg has more than 9 years of experience in testing desktop, web and mobile applications.

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Nate Pirc

Senior Account Executive & Functional Lead SDR

Nate has more than 9 years of Enterprise Software and Business Development experience.

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Shalini Sunder

Head of HR

Shalini has 16+ years of experience in HR, working with diverse and multicultural teams across the globe. She strives to create a workplace where employees are happy and feel intrinsically motivated to bring their best to work every day.

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Sergii Kovalchuk

Data Reporting Manager

Sergii has been working as a Reporting Manager for 11 years and has extensive experience in automated risk reporting.

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Max von Hausen

PPA Transaction Advisor

Max has 7 years of experience in originating, structuring and negotiating PPA transactions and in developing trading strategies in Central Europe and Mexico.

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Jens Hollstein

Head of Advisory

Jens has 20 years of experience in the energy industry. The last 5 years he worked on structuring of renewable offtake agreements and industrial supply contracts.

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Alexander Arendar

QA Automation

Alexander brings 16 years of experience in QA, software development and project management, with a focus on QA automation for web applications.

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Christoph Staub

Senior Energy Quant

Christoph has over 17 years of experience in quantitative modelling in the Energy sector, including valuation of long-term contracts and renewable power generation.

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Xuejiao (Jo) Han

Lead Storage Quant

Xuejiao (Jo) has 5+ years experience in energy economics, markets and optimization modeling in the energy sector. She holds a PhD degree in Power Engineering from ETH Zurich.

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Rommero Carrillo

Head of Corporate PPA Desk

Rommero has 10 years of experience in energy markets, innovation, business development and entrepreneurship.

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Dmytro Kutetsky

DevOps Engineer

Dmytro has over 10 years of experience as a software engineer and has dedicated himself to DevOps engineering a few years back. He holds a Masters Degree in Computer Engineering.

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Maciej Szybiak

Junior Data Analyst

Maciej is a fellow of the Excellence Scholarship & Opportunity Programme at ETH Zurich and holds a Master's degree in Energy Science and Technology.

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Arnaud Juhel

Quant Risk & Transaction Analyst

Arnaud brings 5 years of experience from the financial software industry, with a quantitative focus on interest rates. He holds a Master's degree in in international finance from ESC Pau Business School (France).

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Arpi Komaromi

Sales Operations and Salesforce Administrator

Arpi has over 6 years of hands-on experience in the Salesforce ecosystem working with both startups and enterprise level companies. His expertise is in Salesforce implementation and consulting with a focus on commercial operations

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Mark Commerford

Lead Data Engineer

Mark has more than 7 years in the data analysis and project management relating to renewable assets, forecasting and portfolio optimization.

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Tom Forrest

Business Development / Software Sales Manager

Tom has over 15 years of global experience in both trading, consulting and business development roles at software vendors and a utility. He holds an honours degree in Commerce & Information Systems.

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Serhii Bezus

Data Engineer

Serhii has more than 3 years of experience in data analysis and developing on a Microsoft Power platform.

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John Dallimore

Senior Manager Risk Advisory

John has over 14 years of experience in the energy industry with extensive utility industry knowledge covering renewable energy PPAs, energy markets, and associated regulations and risk.

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Tom Salley

Sales Development Representative

Tom has 5 years of experience in the energy sector as an engineer at first and then in business development roles. He holds a European Master in Renewable Energy from Mines Paristech.

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James Phillips

PPA Transaction Manager

James has 7 years’ experience in the energy industry, specialising in product development, commercial strategy and the origination and negotiation of structured PPA transactions.

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Brian Knowles

Senior Energy Storage Advisor

Brian has over 10 years of experience developing and financing energy storage projects participating in wholesale energy, ancillary services, and capacity markets.

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Rebecca Liyanage

Sales Development Representative

Rebecca has ten years of experience in business development and entrepreneurship. She holds a PhD in Chemical Engineering from Imperial College London and has led global research focused on carbon storage and hydrology.

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Cédric-James Piaget

Risk Expert

Cédric has 7 years of combined experience working in financial risk management and in data analysis relating to renewable assets. He holds a bachelor's in Mathematics and master's in Quantitative Finance.

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Conor Costello

Sales Development Representative

Conor has a background in Software Sales and holds an honours degree in Business Management with a focus on Entrepreneurship.

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Hubert Raich

Software Engineer

Hubert has 7 years of experience in backend java development as well as web frontends and mobile apps in public and private sector projects including energy, health, banking, and government.

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Boon-Li Wong


Boon has over 14 years of experience in energy trading and risk management from diverse roles in multinational trading companies. Boon holds a MSc in Mechanical Engineering and a MSc in Business Administration.

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Nick Hodgson

Senior PPA Transaction Manager

Nick has over a decade of experience in both Utility and Corporate PPAs. Originating, structuring and negotiating on behalf of UK suppliers and developers.

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Rostyslav Yanevych

Senior Frontend Developer

Rostyslav brings over 20 years of experience in software development of different desktop applications on Assembler, Pascal, Fortran, Delphi, Ruby on Rails, jQuery backbone.js and Angular.

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Bruno Lichot

Product Manager - PexaMonitor

Bruno spent more than 20 years in product management and innovation, helping enterprises to create a customer-centric products. He is a computer scientist with specialization in software engineering.

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Emily from Pexapark

Customer Service

Emily is in charge of outbound communications at Pexapark. She is most productive at night time writing emails to clients while doing a shoulder stand.

Advisory Council

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Christian Schaffner

Executive Director, Energy Science Center (ESC) ETH Zürich

Christian has been working in the energy field for over 20 years. His experience covers startups, policy making and science.

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Walter Steinmann

Senior Advisor at Energy Infrastructure Partners

Walter is the former director of the Swiss Federal Office of Energy (SFOE) and was member of the Governing Board of IEA (Paris) and IAEA (Vienna).

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Pol Budmiger

Entrepreneur / Startup Coach

Pol has 25 years of experience as entrepreneur in IT, engineering and cleantech and supports young companies as a coach.

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Harald von Heyden

Partner of Arctic Securities

Harald has 20+ years experience from the power/renewables industry, having worked mainly within trading, origination, asset development, m&a and venture. He holds an BSc in Management Science from Warwick Business school and an MPhil in management from Cambridge University.

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Christian Hürlimann

Managing Director, EKZ Renewables

Christian has 15+ years of experience in field of renewables and energy, including M&A, asset management and origination.

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Kevin Heffron

Fintech Founder, Investor, Advisor and Business Developer

Kevin is the former President of Trayport Limited. He has over 40 years of experience in commodity, financial and derivative markets finance, trading, structuring and software platform management.

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Daniel Mischler

Chief Digital Officer at EuroChem Group

Daniel is a former global CIO, regional CEO and experienced investor in startups with successful exits. He maintains a global network to peers.

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Sascha Bibert

Senior Advisor & CFO

Sascha is a former CFO of multi-billion Euro energy companies, experienced in the energy transition and fueling growth via debt and equity capital. He started his career 22 years ago as an equity analyst and fundmanager and is a CFA and CCrA charterholder