Principal Mechanical Engineer

Mantel is developing the first molten-salt-based carbon capture technology which is 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 Senior Mechanical Engineer excited to join a promising carbon capture startup working on the development of molten salts as a novel CO2 sorbent material. The Mechanical Engineer will work with Mantel’s engineers and partner EPCs to design, build, commission, and operate Mantel’s first-of-a-kind demonstration system. This position will center around piping, rotating equipment, steam systems and boilers, and validation of equipment and materials support demonstration plant scale-up and transition to commercial systems. The Mechanical Engineer will also work with Mantel’s senior engineers to perform analysis/calculation/modeling, equipment specification including component sizing and data sheet review, create and optimize startup/shutdown procedures, and cross-discipline coordination with Mantel R&D team.  Mantel is looking for a well-organized, versatile technical problem solver who can think outside the box and communicate effectively in a multi-disciplinary team environment.  

Minimum Qualifications:

• Bachelors degree in engineering (Mechanical)

• Experience in industrial boiler/plant design, operation, and maintenance  

• Required: field experience in industrial boiler/plant commissioning 

• Strong background in safe plant operation, industrial safety, and process hazard analysis 

• Thorough understanding of engineering drawings, P&IDs, equipment specifications, and engineering commissioning/operating procedures 

Desired Qualifications:

• Experience with molten salt/metals or carbon capture systems 

• Experience working with external EPCs 

• Experience: Minimum 5 years of experience in an industrial setting.

• Location: Remote/Hybrid or In-person (Cambridge, MA). Up to 25% travel may be required.

Compensation & Benefits – we provide competitive and holistic compensation to all our full-time team members, including: 

• Highly competitive pay based on experience, including equity 

• 90% subsidized medical and dental healthcare coverage, 50% for dependents (100% for Canadian employees)

• Unlimited vacation policy, mental health personal days, generous sick leave, plus a week-long winter break at the end of December 

• Health/Fitness and cell phone stipend 

• Company matched 401k (or Canadian equivalent)

• Generous parental leave 

• Access to FSA/HSA and commuter benefits accounts (or Canadian equivalent)

This is an exciting opportunity to be an early hire in a new, well-funded company, with significant opportunity for advancement. Opportunity to be an early hire in a well-funded company, with significant opportunity for advancement.