Intern - EHS Engineer - Spring or Summer 2027

Commonwealth Fusion Systems LLC; Harvard (MA); On-site; USD 34,000 - 52,000; Full time

Benefits offered by this job

Sick time

Health insurance

Dental insurance

Vision insurance

401(k) with employer matching

Professional growth opportunities

Job summary

Commonwealth Fusion Systems LLC is seeking an Environmental Health & Safety Engineering Intern to contribute to building EHS culture in a dynamic R&D, plant, and manufacturing setting. You’ll assist with regulatory filings, audits, data management, and training across the EHS program.

On-site opportunities in Devens, MA, with 13–26 week duration and 40–50 hours per week; rates vary by year in school and degree level, with BS interns at $25–$32/hr and MS/PhD interns at $35–$38/hr.

Qualifications

• Pursuing or holding a Bachelor’s or Master’s Degree in EHS or a related STEM field.
• Foundational knowledge of OSHA and EPA regulations.
• Ability to work in a high-volume, fast-paced environment.
• Prior internship or hands-on experience in industrial, chemical, laboratory, or construction settings.
• Familiarity with environmental regulatory standards (RCRA, SWPPP, Tier II/TRI, DEC).
• Proficiency in Excel or data management tools.
• Strong organizational skills with the ability to handle shifting priorities.

Responsibilities

• Help collect, organize, and prepare data for recurring regulatory filings.
• Keep digital filing systems, permit records, hazardous waste manifests, and Safety Data Sheet (SDS) libraries up to date and audit-ready.
• Conduct audits of existing programs or processes across Environmental, Health, and Safety.
• Conduct site inspections to support EHS programs and confirm compliance or identify improvements needed.
• Participate in team meetings, help draft topic-based awareness bulletins or toolbox talks, and support EHS training across the organization.

Skills

Excel

Data management

Organizational skills

Adaptability

Time management

Education

EHS or STEM degree

Tools

None

Job description

About Commonwealth Fusion Systems:

Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy.

Combining decades of research, top talent, and new technologies, we’re designing and building commercially viable fusion power plants. And we're working with policymakers, suppliers, and many others to build the energy industry of the future.

We’re in the best position to make it happen. Since 2018, we’ve raised $4 billion of capital, making us the largest and leading fusion company in the world.

Now we’re looking for more thinkers, doers, builders, and makers to join us. People who’ll bring new perspectives, solve tough problems, and thrive as part of a team.

If that’s you and this role fits, we want to hear from you.

Join the power movement as a EHS Engineering Intern

The Environmental Health & Safety Engineering Intern contributes to building the environmental, health, and safety culture for the fusion industry. This role offers hands-on experience in a dynamic R&D, plant, and manufacturing environment. Our intern will support critical projects across Environmental Protection, Health, and Safety, helping to ensure a safe, compliant, and sustainable workplace. Responsibilities will include assisting with environmental reporting and compliance initiatives, program audits and process confirmations, and equivalent.

Program Details:

• 13-26 week internship
• 40-50 hours per week with set hourly salary based on year in school
• Opportunities on site in Devens, MA. If an intern is going to be on site, you will be responsible for your own transportation and housing
• Specific project assignments and required technical skillset will vary based on the team’s existing need.
• Opportunities available for currently enrolled college students in all levels of schooling from bachelor’s degree to PhD
• Interns must be authorized to work in the United States for any employer

What you'll do:

• Help collect, organize, and prepare data for recurring regulatory filings
• Keep digital filing systems, permit records, hazardous waste manifests, and Safety Data Sheet (SDS) libraries up to date and audit-ready
• Conduct audits of existing programs or processes across Environmental, Health, and Safety
• Conduct site inspections to support EHS programs and confirm compliance or identify improvements needed
• Participate in team meetings, help draft topic-based awareness bulletins or toolbox talks, and support EHS training across the organization

What we’re looking for:

• Pursuing a Bachelor’s or Master’s Degree in EHS, Environmental Engineering, Industrial Hygiene, Chemistry, or a related STEM field
• Foundational knowledge of core EHS regulatory frameworks (OSHA, EPA) through coursework or academic projects
• Ability to work in a high-volume, fast paced environment
• Prior internship or hands-on experience in an industrial, chemical, laboratory, or construction setting
• Familiarity with specific environmental regulatory standards (RCRA, SWPPP, Tier II/TRI, DEC)
• Demonstrated proficiency in Excel or data management tools for compiling records and reporting metrics
• Strong organizational skills with the ability to handle shifting priorities under general supervision
• Baseline familiarity with environmental, health, and safety regulations (e.g., OSHA, EPA, RCRA, DEC) gained through coursework or prior projects is required

Must-have Requirements:

• Willingness to travel or work required nights/weekends/on-call occasionally
• Perform activities such as typing, standing, or sitting for extended periods of time
• Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics

$25 - $38 an hour

Rates are aligned to your current year in school, ensuring equitable and consistent pay across our intern program.

For BS interns, the hourly rate is $25–$32

For MS/PhD interns, the rate is $35–$38

Benefits included for full-time interns:

• 40 hours of sick time
• Health, dental, and vision insurance
• 401(k) with employer matching (must be 21 years of age to enroll)
• Professional growth opportunities
• Team-building activities

#LI-Onsite

At CFS, we excel in fast-paced environments, driven by our values of integrity, execution, impact, and self-critique. As we grow, we’re eager to bring on mission-driven folks who offer diverse perspectives and fresh ways to tackle challenges.

We value diversity deeply and are proud to be an equal opportunity employer by choice. We consider all qualified applicants equally, regardless of race, color, national origin, ancestry, citizenship status, protected veteran status, religion, physical or mental disability, marital status, sex, sexual orientation, gender identity or expression, age, or any other basis protected by law.

This role requires compliance with U.S. laws concerning the export of controlled or protected technologies or information (collectively, “Export Control Laws"