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Salary
≈ $20k – $45k per year (Estimated)
Location
Hybrid (Barcelona, Spain)
Seniority
Intern
Employment
Part-Time

Confirmed on the employer's own hiring board on Oct 21, 2026. First seen by Alion on Oct 19, 2026. Ecolab scores B on the Alion truth index.

Overview
Company
Impact
Profile match
Ecolab is a water, hygiene and infection prevention company headquartered in Saint Paul, Minnesota, supplying cleaning and sanitation chemicals, water treatment programs, food safety services and pest elimination to restaurants, hotels, hospitals, food and beverage plants and heavy industry. Founded in 1923, it is a Fortune 500 company that serves customers at more than 100,000 sites worldwide and owns Nalco Water, its industrial water treatment business. Openings cover sales and territory managers, field service representatives, food safety specialists, lab and manufacturing staff, logistics associates, finance analysts and data and AI engineers.

Nalco is currently seeking a Project Engineer Trainee to join our Industrial Engineering team in Barcelona. As the industry leader in water technology, we’re growing and need talented people like you to help us continue to protect the world’s most vital resource.

How You’ll Make an Impact:

  • Support the Equipment Engineering and Equipment Maintenance teams in implementing an internal GMAO software.
  • Work closely with Nalco partners and vendors, and interface with third-party equipment providers as required.
  • Perform technical and administrative tasks related to equipment inventory, maintenance plans, and work orders.
  • Participate in site planning activities and occasionally provide help desk support.
  • Ensure compliance with project KPIs (safety, quality, cost, and time) and all Nalco Health, Safety, and Environmental policies.

Qualifications:

  • Bachelor’s or Master’s degree in Chemistry, Chemical Engineering, or Environmental Science with a Water Treatment specialization.
  • English level B2 and native Spanish.
  • Strong interpersonal and communication skills.
  • Problem-solving attitude.
  • Power BI knowledge.

The position is partially remote and partially based in the Sant Joan Despí office. A valid driver’s license and own vehicle are required.

What’s in It for You:

  • The opportunity to take on meaningful challenges, helping customers achieve clean water, safe food, abundant energy, 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 values diverse people, perspectives, and ideas.
  • Comprehensive benefits package.

What Do We Offer?

  • Full-time paid internship.
  • International and dynamic environment.
  • Flexible working hours.
  • Hybrid model: work from home two days per week.

In a world facing increasing water shortages and contamination challenges, Nalco Water, an Ecolab company, helps customers conserve more than 161 billion gallons of water each year. We work with customers across light industries (institutional, food and beverage, transportation, and manufacturing), heavy industries (chemical, power, and primary metals), as well as paper and mining operations, helping them reduce, reuse, and recycle water while protecting their systems and equipment. Nalco Water provides the unique opportunity

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