2,049,091open jobs
120,674companies
245,557added this week
Browse all
Salary
≈ $43k – $83k per year (Estimated)
Location
In office (Solothurn)
Seniority
Intern
Employment
Internship

Confirmed on the employer's own hiring board on Oct 29, 2026. First seen by Alion on Oct 26, 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.

Ultra-Pure Water+ division of Ecolab (former Ovivo Electronics), is a global provider of advanced equipment, technology, and systems to produce ultrapure water (UPW). We are dedicated to innovation, offering energy-efficient and environmentally sustainable solutions to the world’s most challenging water and wastewater issues.

As a Hydraulic Modelling and Simulation Intern, you will develop a dynamic hydraulic model of a water treatment system and connect it to a PLC and SCADA simulation platform for process validation.

Joining Ecolab means being part of a global team of innovative and passionate professionals who are committed to preserving water, our planet's most critical resource. It also means combining our efforts and talents towards a more sustainable future - together.

How You’ll Make an Impact:

· Hydraulic modelling: Develop a representative dynamic model of a water treatment system, including key hydraulic behavior and process constraints.

· Real-time deployment: Prepare the model for real-time or near-real-time execution within the simulation environment.

· PLC and SCADA connectivity: Implement communication interfaces between the hydraulic model, PLC application, and SCADA application.

· Process validation: Use the integrated platform to validate process sequences, operating scenarios, alarms, and control responses.

· Optimization and analysis: Analyze model results and support optimization of simulation performance, stability, and usability.

· Documentation and collaboration: Document model assumptions, interfaces, test scenarios, and results while working with automation and process engineers.

Qualifications:

· You are completing a Bachelor's or Master's degree in automation, industrial computing, electrical engineering, computer science, robotics, or a related field.

· Knowledge of modelling, real-time simulation, optimization, communication protocols, and software programming is expected.

· Experience with hydraulic modelling tools, Python, MATLAB/Simulink, Modelica, OPC UA, or industrial APIs is an advantage.

· You enjoy diversified tasks and hands-on work in technical workshops and on industrial systems.

· You show initiative and creativity, and you are flexible, structured, and able to work independently with guidance from experienced engineers.

· You have strong team-working and communication skills and can collaborate with international departments, suppliers, and customers.

· You have English skills suitable for daily business use. German, French, or other languages are an advantage.

What we offer:

· Working in our young and international Automation Team, with new challenges to solve every day.

· An opportunity to contribute widely and develop your skills in an agile company.

· Dealing with the cutting edge in ultrapure water technology in the electronic industry.

· Technical training in the position related field as well as the possibility for professional development in Switzerland.

· Expected start date: March 2027, or by mutual agreement.

· A modern workplace in Witterswil.

· At Ecolab we are committed to providing working environments where everyone is included and treated fairly and with respect

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.

Free account
Stop reading job ads. Get the ones that fit.
One free account turns this page into a shortlist built around your stack, your level and your pay.
Match on every job. Stack, seniority, pay and location, scored against your profile.
2,049,091 open roles. Read straight off company career pages, refreshed every day.
Unlimited applications. Every one you send is tracked in one place, on-site or on a company board.
3 tailored CVs a month. Rewritten for the exact job you are applying to. Included free.
Create a free account Continue with Google
Free forever. No card. Under a minute.

Your match

How well do you fit this role?
Two answers are enough for a real match. No account needed.
Check my fit
Answers stay in this browser until you create an account.

Recommended for you based on this role

Early Careers
Similar stack
Same company
Solothurn
QA Intern 1 hour ago
≈ $15k – $28k per year (Estimated) · In office · Internship · Shanghai
Apply
≈ $32k – $61k per year (Estimated) · In office · Internship · Vejle
Apply
≈ $16k – $30k per year (Estimated) · In office · Internship · Rio de Janeiro
Apply
≈ $35k – $61k per year (Estimated) · In office · Hoogvliet
Apply
Trainee\Intern 1 day ago
≈ $5.5k – $11k per year (Estimated) · In office · Internship · Petaling Jaya
Python
SQL
Databases
MySQL
MS SQL
DevOps
Incident Management
Apply
≈ $21k – $41k per year (Estimated) · In office · Internship · Gennevilliers
Python
AI/ML
LLM
Apply
≈ $20k – $39k per year (Estimated) · In office · Internship · Élancourt
Python
DevOps
Git
Apply
In office · Internship · Toulouse
Python
JavaScript
SQL
Python
FastAPI
Databases
PostgreSQL
Frontend
Vue.js
Apply
≈ $18k – $28k per year (Estimated) · In office · Master's Degree · Braunschweig
Python
AI/ML
Reinforcement Learning
Gymnasium
PPO
Apply
$24k – $28k per year (net) · In office · Moscow
Python
Python
FastAPI
Django
Databases
PostgreSQL
Redis
RabbitMQ
DevOps
Rest API
gRPC
Robotics
ROS2
IoT
MQTT
Apply
Marketing Trainee 2 days ago
≈ $21k – $41k per year (Estimated) · Hybrid · Full-Time · Barcelona
Apply
In office · Part-Time · Buenos Aires
Apply
≈ $16k – $29k per year (Estimated) · In office · Internship · Bachelor's Degree · Dammam
Apply
Intern 6 days ago
≈ $7.5k – $14k per year (Estimated) · In office · Internship · Master's Degree · Pune
Analytics
Microsoft Excel
Apply
≈ $46k – $76k per year (Estimated) · In office · Internship · 2+ years exp · High School Diploma · New Brunswick
Apply
≈ $39k – $90k per year (Estimated) · In office · Full-Time · Solothurn
Apply
≈ $39k – $90k per year (Estimated) · In office · Full-Time · Solothurn
Apply
≈ $39k – $90k per year (Estimated) · In office · Full-Time · Solothurn
Apply
≈ $42k – $95k per year (Estimated) · In office · Full-Time · 2+ years exp · Solothurn
Apply
≈ $39k – $90k per year (Estimated) · In office · Full-Time · Solothurn
Apply
See all jobs
This is one of many
2,049,091 more open roles from verified company boards, updated every day.