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Manufacturing Engineering Intern

Electrified Thermal

Charlestown, MA • $25.00 / hr • 9/27/2026

Engineering , Professional , Manufacturing

Job Description

Job Description
About Electrified Thermal Solutions
Boilers, furnaces, and kilns are the engines of our industrial economy, providing heat to melt steel, form cement, and transform chemicals. But historically reaching this high-temperature heat required burning fossil fuels, making the industrial sector responsible for 25% of global greenhouse gas emissions.
Electrified Thermal Solutions has a simple and massive goal: to electrify industry.
To do this, we are building the Joule Hive thermal battery: an energy storage technology that converts and stores cheap, renewable electricity as high-temperature heat. Our vision is to mitigate gigatons of CO2 emissions per year by deploying the Joule Hive at every industrial furnace, turbine, boiler, and kiln.

About the Role

The Manufacturing Engineering Intern supports pilot production of the E-Brick refractory heating elements at the core of our Joule Hive thermal battery. The role is deliberately hands-on, combining regular casting and finishing of refractory elements, mold preparation, andan independent capstone engineering project with direct impact on company operations.

Yourworkwilltangibly deepen our understanding of producing our elements at scale.You will report to theManufacturingEngineer.

What You’ll Do

  • Mix, pour, vibrate, cure, fire, QC, and package refractory E-Brick heating elements as part of the Manufacturing team

  • Prepare molds for casting, including cleaning, assembly, and repair

  • Prepare and document Quality Assurance (QA) and Quality Control (QC) samples for each production batch

  • Identify, design,and implement process improvements that increase throughput, consistency, and quality

  • Write and revise standard operating procedures (SOPs) for casting, mold preparation, and lab equipment

  • Keep the production area, samples, tooling, and materials clean, organized, and cataloged

  • Execute a capstone engineering project with direct impact on company operations

Travel:No travel isanticipatedfor this role.

What You'll Bring

Required

  • An enthusiastic approach and resilience in the face of challenging technical problems

  • Experience with hands-on work in a professional or educational setting, such as lab work, production, or construction

  • Attention to detail andstrong communicationskills

  • Demonstrated commitment to adhering to workplace safety procedures and contributing to safety culture

  • Comfort working with your hands; comfort working with power tools or heavy machinery

  • Ability to lift and carry 50lb material bags, stand for extended periods, and work in personal protective equipment

  • Proficiencywith Microsoft Excel or similar data management tools

Preferred

  • Proficiencywith 3D CAD software (e.g., SolidWorks,Onshape, or Fusion 360)

  • Hands-on experience with additive manufacturing (FDM or SLA 3D printing), including design for printability and polymer materialselection

  • Coursework or project experience designing fixtures, tooling, or material-handling hardware

  • Experience with process improvement or operational efficiency initiatives

What We Value
As a growing startup, we value executing through uncertainty and moving toward the problem. We also recognize that structure is support and adheres to processes to keep us safe and make us effective. Electrified Thermal can only achieve our goals if we go together, and value and proactively draw on the diverse backgrounds, skill sets, and perspectives of our growing team. Each day, we work to live sustainably, not only to build a sustainable future but also to create an environment where our employees lead full multi-dimensional lives.
Electrified Thermal believes people are the catalyst for success and seeks those with diverse backgrounds and perspectives to maximize our impact.We know great solutions and innovation can come from anywhere and prioritize hiring people with the ability to work on diverse teams and with a diverse range of people. Electrified Thermal is committed to building a diverse and inclusive team and work environment and we are 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.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. 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.