Research and Development Engineering Intern

Own your future as an intern at Ecolab! Our internship program provides you with invaluable insights from leaders across Ecolab, engaging and challenging projects, opportunities for personal and professional growth, extensive networking, and the chance to immerse yourself in our innovative and dynamic environment. 

Ecolab is seeking Research, Development & Engineering Interns to join our summer 2026 Internship program. Engineering interns in RDE support all business units of a globally diversified technology/service company, creating a dynamic, challenging, and varying work environment. This position will entail a variety of Chemical, Mechanical, or Electrical engineering work with a focus on either new product/application development or process engineering. As an RDE intern, you will participate in and support all stages of product development and application commercialization, from initial product idea generation and brainstorming to the final manufacturing process and post-launch support. 

What’s in it For You:  

• The opportunity to take on some of the world’s most meaningful challenges, helping customers achieve clean water, safe food and healthy environments 

• The ability to make an impact and shape your career with a company that is passionate about growth  

• The support of an organization that believes it is vital to include and engage diverse people, perspectives and ideas to achieve our best 

• Apply what you learn in the classroom to meaningful projects that have genuine business impact      

• Finish your internship with a realistic job preview of what a “day in the life” of an Ecolab associate looks like     

• Be considered for a full-time job offer (to start upon graduation) at the end of a successful internship. 

What You Will Do:  

• Perform research, design, and test, for product improvement and development of new and launched products, chemical dispensing systems, and/or control systems 

• Test, evaluate, and analyze formulations and/or systems to determine or prove performance and reliability  

• Identify and evaluate technologies to advance the performance and reliability of existing and new products  

• Ensure compliance with design criteria and standards  

• Chemical Engineers: Design experiments to understand the dynamics of chemical processes and formulations  

• Mechanical Engineers: Participate in the design and development of new chemical dispensers and control systems  

• Electrical Engineers: Participate in the design and development of new embedded circuit board designs 

• Software Engineers: Participate in digital transformation of processes by creating custom applications or integrating new technologies; and ensure the reliability and security of software systems deployed in real-world industrial environments 

Position Details: 

• 11-week paid internship program, starting on Monday, June 1, 2026 

•  Positions are located in Eagan, MN or Naperville, IL 

• Relocation assistance may be available 

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