The future requires sustainable cement. We're making it happen.


We’re a team of scientists, chemical engineers, mechanical engineers, and former ready-mix concrete plant managers looking to make a huge impact on climate. We’re here because we’re working on something that matters.
Working at Sublime means working with team members who are galvanized in their mission to solve difficult problems and bring about massive change, driven by passion and creativity.

Our Culture
We select team members who take pride and find joy in their work. We value creativity and innovation, which is fueled by passion, a supportive workplace, and a healthy work-life balance.
Our Benefits
- Health and dental insurance for employees and dependents
- 12 weeks of parental leave
- 401k, life and disability insurance, plus professional development funding
- 3+ weeks of paid vacation per year
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Meet our team
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Leah Ellis
Founder & CEO
Leah was Banting/NSERC postdoctoral fellow at MIT and earned her PhD from Prof. Jeff Dahn’s lab at Dalhousie University, where she worked in partnerships with 3M and Tesla on improving lithium-ion cell lifetime and energy density.
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Yet-Ming Chiang
Founder & CSO
Yet-Ming Chiang is a Professor of Materials Sciences and Engineering at MIT, a world-renowned pioneer of electrochemistry and advanced materials, and a serial cleantech entrepreneur having previously co-founded Form Energy, Desktop Metal, 24M Technologies, A123 Systems, and American Superconductor Corp.
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Jesse Benck
VP of R&D
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Joe Hicken
VP of Business Development & Policy
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Raffi Mardirosian
VP of Strategy
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Greg Williams
VP of Product
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Michael Stern
Director of Process R&D
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Mike Corbett
Director of Engineering
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Cayman Somerville
Director of Operations
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Becky Gallagher
Head of Project Development
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Erin Glabets
Head of Communications
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Brandon Williams
Business Development Manager