
The hydrogen economy is developing rapidly in Europe. Significant opportunities are emerging for innovative domestic and international companies in Europe. At the same time, entering these markets requires local knowledge, strong networks, and strategic guidance.
Hydrogen Connect supports companies in the hydrogen sector in successfully building their position in especially the Benelux, Germany or the United Kingdom.
I offer commercial representation services, business development, strategic advice for market introductions, and interim management for companies wishing to develop or expand their activities in this dynamic market.
With in-depth sector knowledge, a strong industry network, and insight into local market structures, I help organizations identify opportunities, develop partnerships, and achieve concrete results.
With professionalism and dedication, I am building the infrastructure of the future. I focus on unlocking the full potential of hydrogen as a sustainable energy carrier through strategic advice and meticulous project management at an international level. My approach is driven by innovation and an unwavering focus on a greener world.
The Mission is to
Decarbonise the Future

Sierk Coolsma
Managing Director


My Experience & Expertise
I am a senior sales manager in the international B to B market with abilities to lead a sales team through changes. A highly analytical developed executive, adept at sales funnel management, forecasting, budgeting and reporting.
I have a proven ability to lead complex customer engagements, successfully manage RFP / RFQ processes and responsible for the management of strategic accounts and tenders for outsourcing situations.
With a proven track record in business development I have a wide experience with setting up new organizations. I am a trustworthy and solid professional who has the competency and experience working seamlessly with different cultures and capable to connect them. A commercially driven and result-oriented person, and simultaneously a stable builder of sustainable relationships. Easily approachable and seen as someone who encourages and communicates openly. Flexible personality with the ability to adapt himself easily and to solve problems. I worked for several years in Brazil and I dominate fluently the Dutch, English and Portuguese languages.
With over 20 years of experience in international telecommunications, I have developed new business relationships and managing regional sales teams, supervising up to 25 employees, in different locations in the Netherlands, the UK, Eastern & Southern Europe, North America, Latin America & the Caribbean.
In the past 5 years I have been active in hydrogen and renewable gas solutions for industrial, off grid power and mobility applications, working for both HyGear in the Netherlands and Protium Green Hydrogen Solutions in the United Kingdom.
With Hydrogen Connect I act as a strategic partner for companies in the hydrogen sector and I offer in-depth commercial expertise and professional and strategic representation to accelerate the transition to clean energy. My mission is to bridge international commercial barriers to successful collaborations, working closely with developers and investors to maximize ecological impact.