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Sublime is advancing a breakthrough, clean, efficient, low-waste process for manufacturing cement, the essential ingredient in the most-consumed human-made material on Earth: concrete. Replacing 200-year-old manufacturing methods that are reliant on kilns running hotter than lava, our near-ambient-temperature, electrochemical technology manufactures industry-accepted cement and critical minerals. We’re partnering with leading general contractors, concrete producers, developers, and technology hyperscalers to deploy our clean, durable, beautiful Sublime Cement® in infrastructure that is defining the future of clean construction. Backed by some of the world’s largest cement producers, leading private investors, and the U.S. Department of Energy, we are assembling a talented, collaborative team that is "amped about cement" (pun intended) and committed to operating on the frontiers of material science, manufacturing, industry, construction, and commercial partnerships, to advance cement innovation that will endure for the next millennium.


Position Overview  


Sublime Systems seeks a creative and dynamic R&D Co-op to contribute to the development of our decarbonized cement. The co-op will be responsible for conducting research including hands-on lab-scale testing, data analysis, and literature reviews. As a member of Sublime Systems’ R&D team, the R&D co-op will work closely with the company’s experienced researchers and will receive extensive mentorship. This is an exciting opportunity to combat global climate change by transforming how the world makes cement. The role will focus on the development and testing of Sublime Systems’ decarbonized cement. This role is expected to be hands-on, with a significant amount of time spent engaging in lab testing. The ideal candidate will have experience working in a laboratory, and is results-driven, detail-oriented, organized, and able to thrive in a fast-paced environment. 


This is a paid full-time (40 hr/wk) in-person position located in Somerville, MA. 


Responsibilities Include:
  • Performing experiments in the laboratory including preparing and testing samples of Sublime Cement and cementitious materials 
  • Measuring cement material properties such as heat release, compressive strength, setting time, and flow characteristics in Sublime Systems’ laboratory 
  • Performing physical or chemical characterization measurements on Sublime materials 
  • Analyzing data, interpreting results, and presenting findings to Sublime’s team 
  • Contributing to the development of Sublime’s process through literature reviews
  • Championing safety, especially in the development and execution of experimental processes 
  • Fostering Sublime Systems’ reputation by delivering innovative solutions 
  • Helping to develop a supportive, innovative, and dynamic company culture


Knowledge and Skill Requirements
  • Pursuing a B.S. in civil engineering, mechanical engineering, materials science or engineering, chemical engineering, materials chemistry, or a related field. 
  • Strong knowledge of materials science fundamentals, including basic materials chemistry and mechanics of materials concepts. 
  • Able to perform lab work including preparing cement material test specimens, setting up and operating testing equipment, and recording results. 
  • Able to lift objects up to 50 lbs.
  • Familiarity with physical and chemical characterization techniques such as compression testing, SEM, XRD, XRF, BET, and ICP is a plus.
  • Strong presentation and communication skills, both written and verbal. 
  • Strong interpersonal skills including the ability to listen, distill information, consult, and suggest new approaches. 
  • Ability to pay close attention to detail, focusing on accuracy and quality, without losing sight of the bigger picture. 
  • Balance, perspective, and a good sense of humor. 



Sublime Systems is proud to be an Equal Opportunity Employer

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, protected veteran status, or any other characteristic protected by law.


Your Right to Work

In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification document form upon hire.


Notice of E-Verify

Sublime Systems use E-Verify to confirm the identity and employment eligibility of all new hires.


We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.