INTERNSHIP DETAILS

Spring Engineering Internship

CompanyMantel Capture, Inc
LocationCambridge
Work ModeOn Site
PostedJuly 23, 2026
Internship Information
Core Responsibilities
The intern will run and analyze lab-based carbon capture experiments and design new diagnostics or components using a machine shop and 3D printing facilities. They will also perform system process engineering modeling and study the performance of construction materials.
Internship Type
full time
Company Size
50
Visa Sponsorship
No
Language
English
Working Hours
40 hours
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About The Company
Mantel is developing the first molten-salt based carbon capture technology. Our molten borates are designed to operate at the high temperatures found inside boilers, kilns, and furnaces – enabling highly efficient carbon capture that has not been possible until now. Carbon capture can be applied across industry to reduce emissions - and even achieve net-negative emissions. By solving for efficiency Mantel can reduce energy losses by more than 60% and cut costs in half, unlocking carbon capture’s role in reaching global net zero.
About the Role

Mantel is developing the first molten-salt-based carbon capture technology designed to operate at the high temperatures found inside boilers, kilns, and furnaces — enabling highly efficient carbon capture that has not been possible until now. Carbon capture can be applied across industries to reduce emissions and achieve net-negative emissions. By solving for efficiency Mantel can cut costs substantially, unlocking carbon capture's role in reaching net zero emissions by 2050. To learn more, go to: https://www.mantelcapture.com/

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Mantel is looking for a Fall Engineering Intern excited to join a promising carbon capture startup working on the development of molten salts as a novel CO2 sorbent material. Mantel is looking for both undergrad and graduate level interns from a variety of backgrounds including Chemical Engineering, Mechanical Engineering and Materials Science who are interested in gaining machine shop, prototyping and fabrication experience. Recent graduates and students graduating in December 2027 are welcome to apply. This is a full time 40 hour per week position in the Cambridge, Massachusetts. Spring Interns will be given the opportunity to work on a variety of science and engineering problems such as:

  • Improve our understanding of the performance of different material of construction candidates.

  • Run, analyze and modify lab-based carbon capture experiments

  • Design and fabrication of new diagnostics or components for our lab-based pilot with access to a fully kitted machine shop, state of the art 3D printing facilities and electronics lab.

  • System process engineering modeling and early engineering studies

All internships include a path to full-time positions for the right candidates.

Key Skills
Chemical EngineeringMechanical EngineeringMaterials SciencePrototypingFabricationMachine Shop Operation3D PrintingElectronicsProcess Engineering ModelingCarbon Capture
Categories
EngineeringEnvironmental & SustainabilityScience & ResearchEnergyManufacturing