Engineer Crushing/Milling Pilot Co-op
Sublime Systems
equipment operation
sample analysis
equipment installation
process documentation
plant maintenance
process improvement
In your role you will learn to operate our pilot plant using an HMI as well as take and analyze process samples. You will help maintain pilot equipment as well as implement process improvements.
- Maintain pilot plant conditions in a fashion that facilitates cleanliness and productivity
- Document process operations
- Participate in the sample prep, analysis and interpretation of lab and pilot scale experiments.
- Facilitate installation and assembly of new equipment.
- Daily operation of equipment and testing in Sublime’s crushing/milling pilot system
- Perform necessary pre-operation and end of shift activities to ensure proper equipment start-up and operation on multiple pieces of equipment. This will include driers, crushers, mills, and other similar equipment
- Move reasonably sized drums and packages of raw materials by hand or using a hand pallet jack (no forklift operation)
engineering degree
internship
safety
detail oriented
hands‑on
process improvement
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
Position Overview This is an exciting opportunity to transform how the world makes cement. Sublime Systems seeks a creative and dynamic Engineering Intern to support operations of our first pilot plant. In your role you will learn to operate our pilot plant using an HMI as well as take and analyze process samples. You will help maintain pilot equipment as well as implement process improvements. 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. Responsibilities include:Daily operation of equipment and testing in Sublime’s crushing/milling pilot system Perform necessary pre-operation and end of shift activities to ensure proper equipment start-up and operation on multiple pieces of equipment. This will include driers, crushers, mills, and other similar equipment Participate in the sample prep, analysis and interpretation of lab and pilot scale experiments. Document process operations Facilitate installation and assembly of new equipment. Maintain pilot plant conditions in a fashion that facilitates cleanliness and productivity Move reasonably sized drums and packages of raw materials by hand or using a hand pallet jack (no forklift operation) Knowledge and Skill Requirements:Actively pursuing a degree in Mechanical, Chemical, or Industrial engineering or a related field A strong sense for safety, organization, and attention to detail. Previous internship and/or lab experience Ability to make keen observations on process anomalies, recommend process improvements, and articulate findings. Knowledge of and passion for applying engineering fundamentals to chemical plant design and operation Able to lift objects up to 50 lb, 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. Balance, perspective, and a good sense of humor.
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.
This is an exciting opportunity to transform how the world makes cement. Sublime Systems seeks a creative and dynamic Engineering Intern to support operations of our first pilot plant.
Sublime Systems use E-Verify to confirm the identity and employment eligibility of all new hires.
- A strong sense for safety, organization, and attention to detail.
- Knowledge of and passion for applying engineering fundamentals to chemical plant design and operation
- Able to lift objects up to 50 lb, climb ladders, and work on step stools
- Ability to make keen observations on process anomalies, recommend process improvements, and articulate findings.
- Actively pursuing a degree in Mechanical, Chemical, or Industrial engineering or a related field
- Ability to pay close attention to detail, focusing on accuracy and quality, without losing sight of the bigger picture.
- Previous internship and/or lab experience
- sublime systems uses e‑verify to confirm identity and employment eligibility of all new hires.
People also searched
$40M
Series A Funding
Secured $40 million in Series A funding to ramp up pilot production and forge strategic ties with cement giants and climate investors.
250 TPY
Pilot Plant Output
Pilot plant in Somerville, MA produces over 250 tons per year of ASTM-compliant cement without fossil fuels.
$87M
DOE Award
Received an $87 million award from the DOE to build a commercial plant in Holyoke, MA, leveraging hydroelectric power.
>90%
GHG Savings
Validated over 90% greenhouse gas savings via lifecycle assessment and completed field trials.
- Born from MIT in 2020, two experts in materials and electrochemistry spun out a bold idea: make cement without kilns or CO₂ emissions.
- Their electro-chemical refinery for rocks turns low-value feedstocks into cement plus valuable co-products like magnesium and aluminum.
- The result is a cleaner, more durable, lighter cement that rivals and often exceeds OPC in durability and consistency.
- Backed by Holcim and Siam Cement Group, they’re positioned to industrialize a true-zero solution that could decarbonize a major global industry.
>90% Reduction
Global Warming Potential
Electrified cement manufacturing achieves a >90% reduction in global warming potential compared to traditional cement (72 kg CO₂/tonne vs. 922 kg CO₂/tonne).
30k Tons/Year
Plant Capacity
The first commercial plant in Holyoke, MA, will have a capacity of 30,000 tons per year.
$200M+
Funding Raised
Over $200 million raised, including DOE grants and investments from leading cement companies and Microsoft.
>250 TPY
Pilot Capacity
A pilot facility in Somerville, MA, operates at over 250 tons per year, supplying low-carbon cement to early projects.
- Electrified cement manufacturing process eliminates fossil fuels and limestone, delivering a >90% reduction in global warming potential compared to ordinary Portland cement (72 kg CO₂/tonne vs. 922 kg CO₂/tonne).
- Cradle-to-gate life cycle assessment conducted per ISO 21930 confirms major reductions in acidification and eutrophication without increasing water use.
- Developed 'true-zero' process that avoids both mineral and fossil-fuel emissions, relying solely on clean electricity and carbon-free inputs.
- First commercial plant in Holyoke, MA projected to open in 2026 with 30,000 tons-per-year capacity, scaling to cost and scale parity with traditional cement.
- Pilot facility (Somerville, MA) running at >250 TPY capacity and shipping low‑carbon cement to early customer projects (e.g., One Boston Wharf net‑zero building).
