About the role#
This is an 11-week paid internship program for Summer 2027. You will join our technical sales team to help customers preserve energy and water, minimize their environmental footprint, and increase productivity. This role combines engineering principles with a consultative sales approach. You will learn to build long-term customer relationships and provide strategic solutions through hands-on problem solving.
What you'll do#
- Complete independent projects under the direction of your primary trainer to yield a calculated ROI.
- Visit multiple customer sites across your region, spending 40-100% of your time in the field to learn best practices and treatment applications.
- Observe and participate in customer service visits to ensure accurate chemical application, process optimization, and documentation.
- Provide routine service support to Sales Representatives, including work with boilers, cooling towers, closed loops, and filtration systems.
- Build key relationships with departments and personnel critical to field success.
- Complete safety training and technical lessons focused on water treatment applications.
What you'll need#
- Current enrollment in an undergraduate Engineering degree program, specifically Chemical, Mechanical, Environmental, or Industrial Engineering.
- Expected graduation date in December 2027 or Summer 2028.
- A valid US Driver’s License with an acceptable motor vehicle record.
- Access to a personal vehicle.
- Ability to lift, push, or carry up to 50 pounds chest high.
- Note: Immigration sponsorship is not available for this position.
Location & details#
- This is a full-time, paid internship starting on June 1, 2027.
- The role offers a hybrid work environment, balancing field visits with remote work.
- Positions are available in various locations, including Chicago, Los Angeles, San Francisco, Dallas, Salt Lake City, Cleveland, Baton Rouge, New York, Boston, Philadelphia, Houston, Tucson, Beaumont, Goodyear, Columbus, Atlanta, Saint Louis, Louisville, Minneapolis, and Las Vegas.
- You must be willing to relocate within the United States.
About Ecolab
Ecolab provides water, hygiene, and infection prevention services. It operates in more than 170 countries. The company serves sectors such as food, healthcare, hospitality, and industrial markets. It focuses on science-based solutions for water and energy usage.
How to get in at Ecolab
Applying to Ecolab early is a distinct advantage because recruiters review applications as they arrive. Intern Insider sends an instant alert the moment a role matching your target is published, so you can submit your materials before the applicant pool grows. This helps you avoid the frustration of applying to a role that has already been filled. You can also use Intern Insider to surface the specific recruiters behind these roles. Reaching out directly to ask about the position or a referral often improves your response rate compared to waiting in a queue. It is a practical way to show genuine interest in the company.



