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Chemical Engineer (m/f/d)

Posted 2 Mar 2026
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Work experience
1 to 4 years
Full-time / part-time
Full-time
Job function
Degree level
Required languages
English (Fluent)
Portuguese (Fluent)

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Chemical Engineer Nalco Water, Research Development & Engineering (RD&E) Team based in Leiden, The Netherlands

Nalco Water, an Ecolab Company

Nalco Water, an Ecolab Company, is seeking a motivated engineer to join our innovation efforts and support our customers in the Global High Tech (GHT) industry. We are establishing a dedicated EU GHT RD&E team who will work alongside our Global Water RD&E group in Leiden, the Netherlands. The Senior Chemical Engineer will primarily be responsible for contributing to the development and / or deployment of innovative chemistry, equipment and/or digital technologies in the GHT industry. The role will also encompass a significant portion of customer (field / application) support, using these learnings to ensure a robust pipeline for new products and platforms that help our customers solve complex problems relating to water treatment. We are seeking a candidate with a strong technical background, who is ‘hands-on’, ideally with practical field/application experience, who is self-motivated, enjoys versatility and work across different topics and projects, has a desire for collaboration and is a creative problem solver.

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, abundant energy and healthy environments
  • The ability to make an impact and shape your career with a company and a team that is passionate about growth
  • A culture that values safety first, including training and personal protection.

The main responsibilities of the role are to:

  • Collaborate with a global team on innovation development and deployment of products (chemistry, equipment or digital) related (but not limited) to cooling within the global high tech industry
  • Provide customer support relating to cooling / water treatment (e.g., direct to chip, closed loops, open-evaporative systems, adiabatic, effluent treatment) in the GHT industry.

This involves:

  • Being a key technical contributor on multiple, complex projects by conducting both lab and field tests (typically under the guidance and supervision of a lead engineer or subject matter expert), ensuring that data is analyzed, documented and results communicated in a clear and concise manner.
  • Support the development of the application guidelines and operational windows for new products and/or technologies.
  • Collaborating with a global team, various functions as well as potential 3rd parties on the development of technologies that meet customer needs.
  • Identifying and understanding customer needs and challenges within the GHT industry (through field visits, engagement with customers and industry experts) and using these learnings and experience to support the development of the EU innovation roadmap.
  • Provide technical support to sales and customers which includes but not limited to, technical training, application guidance, technical exchange, trouble-shooting, field visits etc.

Qualifications and experience:

  • Chemical, Mechanical, Process Engineering or related with ideally 2-4 years of industry/field experience OR
  • Masters in Chemical, Mechanical, Process Engineering or related with ideally 1-2 years of industry/field experience
  • Industry / field experience in cooling water treatment (open-recirculating and closed) cooling water treatment and / or effluent treatment is an advantage
  • Experience in the Global High Tech industry (and associated cooling technologies such as Direct to Chip cooling, Adiabatic) is an advantage
  • Self-starter, who is willing to learn and has a ‘hands-on’ approach
  • Good communication skills; with the ability to deliver complex information in an easy-to-understand format
  • Creative problem-solving skills
  • Works well under pressure
  • Proficiency in English (both written and verbal) required
  • Willingness and ability to travel 10-30 % of the time

A global sustainability leader offering water, hygiene and infection prevention solutions and services that protect people and the resources vital to life. 47,000 associates help deliver comprehensive science-based solutions, data-driven insights and world-class service to advance food safety, maintain clean/safe environments, optimize water and energy use, improve operational efficiencies and sustainability for customers in the food, healthcare, life sciences, hospitality and industrial markets

Chemical
Oegstgeest
Active in 171 countries
400 employees
60% men - 40% women
Average age is 39 years