More about Marek Roostar
Marek has 20 years of B2B sales & marketing experience. Last 10 years he’s been working with innovative technology start-ups like Timbeco (smart construction), Cleveron (robotics) and Elcogen (cleantech & renewables). He is true believer in process thinking and enthusiast of personality psychology.
Marek’s main role has been to drive growth of start-ups on export markets. In some cases, it involved leading the changes inside the company, in some cases it involved international marketing and sales strategy development and in some cases it involved communications and branding formation.
Marek's current role is to drive growth of Elcogen - an Estonian cleantech start-up, one of the leading European hydrogen technologies (SOFC/SOEC) developer and manufacturer. Winner of Innovation at European Business Awards 2019, Innovator of Estonia 2020. Marek' customer portfolio includes global brands from energy, automotive and utility industries, mostly from Japan, S-Korea, China and USA markets.
Marek’s main role has been to drive growth of start-ups on export markets. In some cases, it involved leading the changes inside the company, in some cases it involved international marketing and sales strategy development and in some cases it involved communications and branding formation.
Marek's current role is to drive growth of Elcogen - an Estonian cleantech start-up, one of the leading European hydrogen technologies (SOFC/SOEC) developer and manufacturer. Winner of Innovation at European Business Awards 2019, Innovator of Estonia 2020. Marek' customer portfolio includes global brands from energy, automotive and utility industries, mostly from Japan, S-Korea, China and USA markets.
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Founders and startup folks who joined past eChai startup events
The eChai Effect - In Their Words
"If there’s one phrase that sums up my journey, it’s truly ‘The eChai Effect.’ Six years ago, I simply walked into my first eChai event, not knowing what to expect. The honest conversations, energy, and inspiration from founders and entrepreneurs struck a chord within me. That eChai spark became the catalyst for everything to follow. I proudly say: my entrepreneurship journey started—and keeps evolving—because of eChai. Redicine Medsol’s story is integrally linked to this community. I’ve gained so much, not just as a founder but as a forever volunteer and grateful member of the eChai family. With all my heart, thank you Jatin Bhai and everyone at eChai for shaping, guiding, and supporting my dreams. The eChai Effect will always be a part of my story."
Kush Prajapati
Founder, Redicine Medsol
"At DevX.Work, we’ve greatly benefited from our association with eChai. Their events and networking forums have connected us with high-potential startups, ecosystem leaders, and innovation-driven professionals — many of whom have become valuable partners, collaborators, and even clients. What stands out most is the openness and accessibility of the community — whether you're an early-stage founder or an experienced entrepreneur, eChai provides a welcoming space to learn, collaborate, and grow. It's more than just a network — it's a catalyst for real, collaborative growth. We’re proud to be part of the eChai community. Highly recommended for any organization aiming to grow within the startup space."
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Co-Founder, DevX
"The eChai platform has been super valuable for me - it has helped me gain a deeper understanding of domains in the startup and tech ecosystem. What stands out most is the celebration of knowledge, professional growth, and entrepreneurship - it’s one of the best for the Indian ecosystem. Along the way, I’ve also been fortunate to make some great friendships and connections too."
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