Mechanical Engineer Intern

Clean Harbors El Dorado Incinerator is seeking a Mechanical Engineer Intern to join our safety-focused team. This internship provides students with the opportunity to gain hands-on experience while supporting real projects that contribute to business priorities across our environmental, energy, and industrial services operations. We are searching for a reliable and team-oriented individual with an excellent commitment to safety to join our growing team during Summer 2027!

This internship is an in-person opportunity based at our El Dorado, AR Incinerator and is not eligible for remote work. Interns will work alongside experienced professionals, gain exposure to our industry, and develop practical skills that support their academic and early career goals.

Start dates for our Summer 2027 Internship Program are May 17th or May 24th of 2027. Internships will run through the summer and end in August.

Why Intern with Clean Harbors?

• Health and Safety is our #1 priority and we live it 3-6-5!

• Competitive pay

• Clean Harbors offers students the opportunity to gain hands-on experience while working alongside professionals who are leading the way in environmental, energy, and industrial services.

Our internship program is designed to provide:

• Engagement with teams, mentors, and leaders across the organization;

• Experience through meaningful projects that support real business priorities;

• Education about the environmental services industry and Clean Harbors’ operations;

• Exposure to different career paths across our lines of business.

Key Responsibilities

• Ensuring that Health and Safety is the number one priority by complying with all safe work practices, policies, and processes and acting in a safe manner at all times;

• Assist in the implementation and maintenance of the Mechanical Integrity Program;
• Learn about corrosion mechanisms and participate in corrosion monitoring and mitigation activities
• Gain exposure to Process Safety Management (PSM) principles, including the Process Hazard Analysis (PHA) process, Management of Change (MOCs), Operating Procedures, Incident Investigation, and other elements of PSM
• Take initiative and demonstrate a proactive approach to learning and problem-solving

• Adhere to safety protocols and ensure compliance with industry standards and regulations, including the pillars of Process Safety Management (PSM)

What does it take to intern with Clean Harbors?

• Currently pursuing a bachelor's degree in mechanical engineering at an accredited college or university;
• Strong interest in learning about the environmental services industry;
• Ability to work collaboratively in a professional team environment;
• Strong communication, organization, and problem-solving skills;
• Proficiency in Microsoft Office or other relevant technical tools;
• Proficiency in CAD or similar software for updating and modifying engineering drawings;
• Knowledge of P&IDs and piping ISOs preferred;
• Lift to 50lbs, climb ladders, stoop, bend, stand for prolonged periods, exposed to various weather conditions and work at heights.

Want to learn more about starting your career with Clean Harbors?

As a Clean Harbors intern, you will gain hands-on experience working alongside field teams and operational leaders who support environmental and industrial services across North America. Your day may include time at a facility or project site, participating in safety briefings, observing operational processes, and learning how teams safely manage environmental services and hazardous materials.

Interns may also assist with project coordination, review operational data, and support team initiatives that help keep operations running safely and efficiently. Throughout the internship, you will gain practical exposure to the people, processes, and safety culture that drive Clean Harbors’ work in the field.

About Clean Harbors

40-years of sustainability in action. At Clean Harbors, our mission is to create a safer, cleaner environment through the treatment, recycling, and disposal of hazardous materials. Clean Harbors is the leading provider of environmental, energy, and industrial services throughout the United States, Canada, Mexico, and Puerto Rico.

Everywhere industry meets environment, Clean Harbors is on-site, providing premier environmental, energy, and industrial services. We are solving tough problems through innovation and proven methodology. Come be part of the solution with us.

Join our safety-focused team today! To learn more about our company and apply for this opportunity, visit: https://careers.cleanharbors.com/intern-co-op-programs

Clean Harbors is an equal opportunity employer.

Clean Harbors is committed to providing access, equal opportunity, and reasonable accommodation for individuals with disabilities in employment, its services, programs, and activities. To request reasonable accommodation, contact [email protected]or 1-844-922-5547.

Clean Harbors is a Military & Veteran friendly company.

Clean Harbors is committed to complying with applicable pay transparency laws and ensuring fair and equitable compensation. The posted salary range reflects the minimum and maximum target for this role. Final compensation may vary based on factors such as location, experience, skills, and business needs. In addition to the base salary, some roles may be eligible for bonus or incentive compensation and a comprehensive benefits package.

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Pay Range: 41500.00 - 133303.00 Annually