Engineering Technical Sales Internship

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 Engineering Technical Sales Interns to join our summer 2026 technical sales internship program. You will help identify and propose solutions to preserve energy and water, minimize our customers’ environmental footprint and increase productivity. You will combine a traditional engineering approach with a consultative sales approach focused on strong account leadership skills and retention of strategic accounts. You will also learn how to build long-term relationships with a large customer base by understanding their key business drivers, providing strategic resolution through hands-on problem solving, and offering new digital technology solutions. 

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 into an Associate District Representative role.  

What You Will Do:  

• Complete an independent project(s) under primary trainer’s direction to yield calculated ROI 

• Complete safety training & technical lessons that serve as an introduction to water treatment applications 

• Observe and participate in service as it is provided to customers to assure accurate chemical application, process optimization and documentation 

• Complete introductory training of the consultative sales approach 

• Visit multiple customer sites across the region (40-100% of training time spent in field) to learn best practices and types of unit applications and treatment approaches 

• Build key relationships and interaction with departments and personnel that will be critical to success in the field 

• Work within various regional sales districts and customer locations to build specific technical knowledge and gain sales experience while helping customers achieve their sustainability goals.  

• Provide routine service support to Sales Representative. May be subject to testing includes Boilers, Cooling towers, Closed loops, R.O. and filtration. 

Position Details: 

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

• Willing to relocate within the United States. Nationwide locations available  

• Relocation assistance may be available<