We make Circularity a Reality!

Sirsak is a green-tech startup that empowers businesses to
transition into a circular economy.

OUR GOALTo transition 3,000 businesses by 2030 through the discovery of high-impact, verified circular solutions.
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Circular economy should become a tangible reality, not just an idea. We do this through addressing the gaps, simplifying the transition, and facilitating an efficient shift towards a circular economy for everyone.
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Our Story
Founded in 2023, Sirsak (Circularity in a Sack) aims to offer circularity solutions and simplify the integration of circular practices within businesses and organizations. We exists to connect all players in the economy. Because we believe that transitioning into a circular economy should be transparent, non-exclusive, and straightforward.
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The Founding Team
With over 20 years of combined experience in waste management and corporate net zero transition, we've navigated the intricacies of transitioning to a circular economy.
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Angeline CallistaCo-founder & CEO
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Lie MangkusatyaCo-founder & CPO
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Violy PurnamasariCo-founder & COO
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PT Sirkular Saka Indonesia (“Sirsak”) is an impact-led circular economy company committed to support businesses to achieve their circularity ambition. We deliver and implement an end-to-end strategy that empowers producers, industries, communities, and cities to kickstart and scale their circularity efforts.


Ⓒ 2023 PT Sirkular Saka Indonesia