GOLDBECK SOLAR - Key Persons
Constantin Lindenmeyer is the CEO of GOLDBECK SOLAR NA. Constantin started in 2019 as a trainee in the Collèges des Ingénieurs' graduate program. Subsequently, he built up the Business Development and Strategy department. In 2021 he was appointed Head of Business Development and Strategy in charge of the development of the battery and Agri PV activities, further advancing GOLDBECK SOLAR's transition from an EPC company to an integrated solar energy player, as well as new acquisitions.
After leading the negotiations for the acquisition of GP Joule NA, he was appointed COO of the newly acquired companies in Canada and the US. Since January 2024 he's the CEO of GOLDBECK SOLAR North America. Constantin holds an MBA from the Collège des Ingénieurs and an M.Sc. in Sustainable Energy Supply from the RWTH Aachen University with semesters abroad at Harvard University and Stanford University. He speaks German and English.
Job Titles:
- President of the German Solar Industry Association since 2014 and Founder of the GOLDBECK SOLAR Group
Job Titles:
- Vice President Engineering
As Vice President Engineering and Project Operations, Michael has responsibility for GOLDBECK SOLAR's contract management, working with clients and key suppliers and partners to negotiate EPC and supply chain agreements, overseeing the delivery of contracts on behalf of customers, the internal financial tracking and performance of projects, as well as being closely involved with customers throughout. Michael brings over 16 years of national and international experience gained within the renewable energy and cleantech sectors of North America and Europe.
Ruben joined GOLDBECK SOLAR North America in September 2025. As Vice President Finance, Ruben leads the company's financial strategy and performance, ensuring a strong foundation for sustainable growth and operational excellence across Canada and the United States.
Prior to joining GOLDBECK SOLAR, Ruben held progressive leadership roles in highly regulated public and private companies, leading teams through periods of significant growth, transformation, and change. He has directed large-scale system implementations, supported mergers and acquisitions, and strengthened financial operations to enhance transparency and decision making across organizations.
Job Titles:
- Finance
- Director of Accounting
Sarah Varaschin, the Director of Accounting & Finance at GOLDBECK SOLAR, brings a decade of experience assisting the financial landscapes of dynamic, high-growth companies across diverse industries. Having earned their CPA, CA designation at Deloitte, Sarah brings a large blend of expertise to their role. Sarah's focus on people as well as process inspires an emphasis on streamlined operations, strong controls, and continuous improvement and innovation. With curiosity and collaboration, Sarah has a track record of leading the evolution of finance, accounting, and audit teams into true, strategic business partners that support organizational strategy and growth.