Our team


Our team brings together a plethora of skills, backgrounds, interests, and education which enables us to conquer the challenges of the renewable PPAs.


MICHAEL WALDNER CEO & Co-Founder of Pexapark

Michael has over 15 years of experience in renewable PPAs, international energy trading, origination and portfolio management.

Florian Müller CTO & Co-Founder of Pexapark

Florian loves building software and has over 10 years of experience in creating applications. He holds a PhD in Computer Science.

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.

Luca Pedretti COO & Co-Founder of Pexapark

Luca has +10 years’ hands-on experience in energy risk management for renewables in open markets – valuating, structuring, negotiating and managing PPA transactions across Europe.

Jens Hollstein Head of PPA Transactions

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

Manuel Damsohn Head Product Strategy

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

Werner Trabesinger Head of Quantitative Products

Werner has been active in energy trading for more than ten years, 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.

Florent Petitfrere Marketing Manager

Florent brings over a decade of experience working as an International photographer and is creating his own twist of digital marketing and SEO strategy.

Amanda Niklaus PPA Transaction Manager

Prior to joining the firm, Amanda spent five years as an Economist and Senior Analyst with expertise in power markets and trading strategies for new energy types in Australia.

Justin Owen CFO

Justin has 16 years of Finance and Accounting experience in the Silicon Valley with the last 8 focused on Enterprise Software companies.

Christoph Staub Senior Energy Quant

Christoph has over 15 years of experience in quantitative modelling in the Energy sector, including valuation of long-term contracts and renewable power generation.

Mathieu Ville Deputy 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.

Karolina Hartzell Risk Manager

Karolina has 3 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.

Richard Boydell Senior Manager - PPA Advisory

Richard has 8 years of European Energy Market experience, with specific focus on Power Purchase Agreements.

Vladimir Kadlec Senior Energy Structurer

Vladimir has more than 15 years of experience in structuring and origination of energy related transactions.

Grzegorz Skarzynski Senior Advisor

Grzegorz has over 20 years of experience in energy sector. His experience covers startups, structuring renewable projects, asset management and lobbying activities.

Nikolaos Krommydas Senior Frontend Engineer

Nazar Kushnir Senior Backend Engineer

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

Alexander Radzishevsky Senior Backend Developer

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

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.

Andreas Kohler Senior Full Stack Engineer

Andreas has a BsC in Computer Sciences, a MAS in Finance and more than 10 years of experience in software development.

Oleg Shynkar Senior QA Engineer

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

Oliver Thalmann

Oliver is an entrepreneur and has 15 years investment experience in the renewable energy industry

Nate Pirc Senior Account Executive

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

Sumon Vangchuay PPA Event / Community Manager

Sumon brings +10 years of experience coordinating expert events & knowledge platforms.

Mark Commerford Senior Data Analyst

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

Wojciech Lebek Software Engineer

Wojciech has over +10 years of experience in software development. Passionate about simple solutions and clean code.

Amit Nahum Head Of Sales

Amit brings over 20 years of experience in the enterprise software space covering all aspects of the enterprise customer lifecycle.

Emily from Pexapark Customers 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.

Taras Stasyuk Software Engineer

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

David Willemsen Senior Manager PPA 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.


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.

Walter Steinmann Senior Advisor at Credit Suisse 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).

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.

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.

Lars Bondo Krogsgaard Strategic Advisor

Lars has a global track-record at top management level with different wind turbine manufacturers having most recently served as Co-CEO at MHI Vestas and CEO at Nordex.

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.

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.