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Drinking Water Process Technologist – Rotterdam

Posted on 28 October 2026

Improve drinking-water quality by analyzing and optimizing treatment processes and advising on projects. Work 32–40 hours a week, with one 24/7 on-call week about every 1.5 months. Gross monthly salary up to €6,635 based on a 40-hour week.

The role

Our client company is looking for a process technologist to help safeguard drinking-water quality from source to tap. You will work at one or more treatment sites, analyze processes, initiate improvements and advise on construction and renovation projects.

Working hours are 32–40 per week, with flexible working hours. About once every 1.5 months, you will be on call for one full week and available 24/7 during that period.

What you will do

  • Develop and maintain water-quality monitoring programmes.
  • Analyze process data and measurement results, report trends, incidents and process performance, and optimize treatment installations.
  • Initiate and guide investigations and advise on improvements to treatment processes.
  • Advise on process and treatment technology for construction and renovation projects.
  • Prepare guidelines and work instructions for colleagues in production and infrastructure, and help resolve problems caused by deviations or emergencies.

What you bring

  • An HBO-level qualification, preferably in chemistry, engineering or biology.
  • Knowledge of water treatment and water-distribution technology.
  • Experience preparing reports and advising on treatment processes.
  • An interest in research and process optimization. Knowledge of membrane systems used in drinking-water production is an advantage.
  • An analytical, independent and precise approach; you are proactive, take responsibility and communicate effectively with a customer focus.
  • Willingness to participate in the on-call rota.

What is offered

  • 32–40 hours per week with flexible working hours.
  • Gross monthly salary up to €6,635, based on a 40-hour work week.
  • The contract type has not been specified.
  • A flexible benefits budget of approximately 15% per month, which can be used for extra leave, paid out monthly or saved.
  • More than 31 days of annual leave, a pension plan, a bike scheme, a contribution towards fitness and opportunities for professional development.

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