Process R&D, Scale- up Co-op

Number of employees

120

Somerville, MA, USA

Posted on: 2026-02-06

Category: materials

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Employment type:

Full time

Experience required:

Intermediate

Salary

Salary not provided

About the company:

Sublime Systems is leading a swift and massive transition to a clean cement manufacturing future. 

Sublime’s breakthrough electrochemical process avoids the pollution caused by ordinary portland cement’s use of fossil-fueled kilns and limestone feedstock. Sublime instead extracts reactive calcium and silicates from abundant raw materials at ambient temperature, to make ASTM C1157-compliant Sublime Cement™, a 1:1 replacement for OPC in concrete. Because it does not require carbon capture, Sublime’s technology offers a clear path for cost-competitive clean cement manufacturing at scale. 

Sublime was founded at MIT in 2020 by Dr. Leah Ellis and Prof. Yet-Ming Chiang, both respected experts in materials science, electrochemical systems, and sustainability research. The company has raised over $200M in funding from leading tech investors, global cement majors, and cooperative agreements with the U.S. Department of Energy’s ARPA-E, IEDO, and OCED award programs. 

It currently operates a Somerville, MA-based pilot plant with a >250 TPY nameplate production capacity and is developing its 30,000 TPY first commercial facility in Holyoke, MA.

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 is seeking a creative and driven Co-op to assist in the scale up of Sublime’s technology. This is an exciting chance to work on process development both at the research and pilot scales and support the goals of process commercialization. In this role, you will gain  experience with small scale reactor design and operation as well as learn how to assemble and operate pilot plant equipment. You will also help to maintain pilot equipment, implement process improvements, and execute experiments to inform scale-up decisions. 
 
This role is expected to be hands-on, with a significant amount of time spent engaging in pilot operation and troubleshooting. Successful candidates will be results-driven, ambitious, organized, and able to thrive in a fast-paced environment with shifting priorities. 
 
The ideal candidate will have: 

- A strong sense for chemical safety, organization, and attention to detail 
- Previous internship and/or lab experience 
- An eagerness for hands-on work and for learning new processes and unit operations 
- A basic understanding of reactor design and/or material characterization techniques  
 
This is a paid full-time (40 hr/wk) in-person position located in Somerville, MA. 

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.

Responsibilities Include:

  • Daily operation of laboratory-scale chemical reactors  
  • Routine synthesis and processing of various materials, both powder and liquid  
  • Interpreting and/or performing physical, chemical, and mechanical characterization of synthesized materials  
  • Analyzing data, interpreting results, and presenting conclusions to the larger team 
  • Facilitate planning, installation, and assembly of new equipment 
  • Move reasonably sized drums of chemicals and packages of raw materials by hand or using a hand pallet jack (no forklift operation) 
  • Participate in downstream product processing 
  • Document process operations and participate in safety reviews/planning 
  • Perform hands-on troubleshooting and repair of pilot equipment 
  • Knowledge and Skill Requirements

  • Actively pursuing a degree in Mechanical, Chemical, or Industrial Engineering or a related field 
  • Knowledge of and passion for applying engineering fundamentals to chemical process design and operation 
  • Able to lift objects up to 50lbs, climb ladders, and work on step stools 
  • Ability to pay close attention to detail, focusing on accuracy and quality, without losing sight of the bigger picture 
  • Desire to work on new processes and learn new skills on-the-job 
  • Familiarity with physical, chemical, and mechanical characterization techniques, such as Laser Diffraction, ICP-OES, SEM, XRF, XRD, titrations, UV-Vis, compressive testing, etc.   
  • Balance, perspective, and a good sense of humor 
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