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Salary
≈ $39k – $87k per year (Estimated)
Location
In office (Barcelona, Paris)
Seniority
Middle · 3+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Sep 29, 2026. First seen by Alion on Sep 28, 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.

We are looking for an experienced Design Engineer to join our Global High Tech (GHT) team. This role focuses on process design, technical solution development, proposal engineering, and engineering support for industrial water and wastewater treatment projects serving high-tech industries.

The successful candidate will play a key role in developing innovative water treatment solutions, preparing process designs and technical proposals, and supporting project execution activities throughout the project lifecycle. The position requires close collaboration with commercial, engineering, operations and customer teams to deliver reliable, sustainable and cost-effective solutions for strategic Global High Tech customers.

Objectives

  • Development of Global High Tech (GHT) opportunities: partners with Senior Design Engineer to provide project engineering support by developing mass balance, process flow sheets, preparing proposals & estimates (CAPEX/OPEX), providing the technical/commercial support at meetings with clients.
  • Process Engineering and Project Support: Provide process engineering expertise throughout the project lifecycle, supporting the development of innovative water and wastewater treatment solutions for high-tech industries. Work closely with project managers, engineering teams and suppliers to ensure technical requirements are successfully translated into project execution, commissioning and start-up activities.
  • Support O&M (Operation Maintenance) team for troubleshooting and continuous improvement implementation in exiting GHT contracts.
  • Ability to build long-term relationships with internal and external customers by understanding their key business drivers. High emotional intelligence level is required for this position.

Recommended profile

  • Education: Chemical / Environmental / Mechanical Engineering Degree
  • Minimum 3 years experience with the design and supporting the sale of water and/or wastewater equipment and systems, including clarification, filtration, membrane separation, RO/UF, DAF, solids separation, metals, removal and biological, to industrial clients.
  • Experience supporting project execution, commissioning, start-up or delivery of industrial process projects is preferred.
  • Having familiarity with water treatment plant commissioning and start-up
  • Communication skills: English & French/Spanish fluent written and verbal
  • People relating attitude and capable to work in team
  • Strong commercial mindset and financial acumen
  • Synthesis and pragmatic approach
  • Able to manage conflict and job-related pressure
  • Problem-solving skills
  • Ability and willingness to travel 50% of time to perform proper discovery and developing the cost basis for each project and present proposed solutions.
  • High computer application literacy (including Microsoft Office suite, and ability to learn business systems) . Autocad preferred.

Principal Accountabilities

  • Functionally report in the Commercial Engineering organization to the GHT Engineering Manager.
  • Based in France or Spain and have regular contact with his/her direct supervisor.
  • Be competent in a wide range of water treatment process technologies and have proven knowledge of designing water treatment systems (prepare mass balance, flow sheet, water mapping, select equipment and costing, prepare documents to support commercial discussion)
  • Be familiar with engineering drawings (P&ID, General Arrangement, Isometric sketches, data sheets, troubleshooting list, electrical and automation drawings, etc..).
  • Be able to analyze water and wastewater systems from a mechanical, operational and chemical standpoint and propose solutions that comply with customer needs and the regulatory framework.
  • Proactively works with clients and Ecolab/Nalco colleagues to determine project needs and identify customer needs by evaluating business models specific to their wastewater and pretreatment operations and develop project specifications.
  • Supervise and/or take over on site survey, conception and basic design by making sure the best technical and economical compromise is reached between OPEX and CAPEX.
  • Utilize technical expertise and financial acumen to support projects qualification and wisely use own time and resources on projects with the highest probability of success.
  • On a project base, make sure to fit with the available budget for each part of the project, and able to discuss with Peers/Manager in case of any problem rising (engineering, partners, and fabricants) during the project execution and improve construction methods.
  • Be able to communicate with many levels of personnel with Nalco Company and external (i.e. Customer, Contractors).
  • Have had experience, even if limited, with plant operation & maintenance.
  • Maintain customer relationships and coordinate to address technical/business issues and renewals within sold O&M accounts.
  • Assist on existing OM contracts for troubleshooting and diagnostic and Improvements identification
  • Be aware of most used international standards and norms required for equipment construction and certification.
  • Be aware of Safety & Environmental aspects of legislation.

About Ecolab:

At Ecolab, we prioritize our talent-first philosophy by creating the most capable and diverse team to excel at our nearly three million customer sites. Building on a century of innovation, our 48,000 associates help deliver comprehensive science-based solutions, data-driven insights and world-class service to advance food safety, maintain clean and safe environments, and optimize water and energy use, and improve operational efficiencies and sustainability for customers in the food, healthcare, life sciences, hospitality and industrial markets in more than 170 countries around the world. Our solutions not only enhance operational efficiency but also contribute to sustainability and public health, making a positive impact on the world. We are committed to eliminating unnecessary complexities and embracing a beginner's mindset, continuously seeking new perspectives and innovative solutions to stay ahead in a rapidly changing world.

Ecolab’s commitment to diversity, equity and inclusion (DE&I) reflects our longstanding value of working together to integrate diverse perspectives to challenge ourselves, reach our goals and do what’s right.

Apply today and join one of the most ethical companies with over a hundred years of history.

Join Ecolab and help us protect what’s vital.

#li-eu

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