Laboratory Technician - Aquatic Ecotoxicology

Witterswil, SO, ch on site Until 8/21/2026 2+ years exp H-1B sponsor history First posted June 13, 2026 Last posted June 13, 2026
Job description

The Eurofins Agroscience Group is one of Europe's leading Contract Research Organisation service providers. We conduct field and laboratory studies to determine the safety of new substances and organisms (e.g. microbials) for humans and the environment, as well as their effectiveness. We are experts in conducting global field and laboratory studies in accordance with GEP and GLP, exposure assessment studies, ecotoxicology, product chemistry, testing of physicochemical properties, and environmental fate and metabolism studies.

In addition, we support our customers in every phase of the regulatory approval process. Our in-house team of regulatory experts works together with our network of field stations, laboratories, and partners.

Eurofins IES AG is a Swiss company located near Basel, right at the crossroads of France. Since our founding in 2008, we’ve grown to become a mid-size company. Our expertise spans several specialist fields, including environmental fate, aquatic ecotoxicology, animal and crop metabolism, and analytical chemistry. We’re passionate about advancing scientific research and providing reliable, high-quality testing services.

Our location and the expertise required from our employees has allowed the company to grow into a successful, multicultural organisation. The IES management team is also composed of scientists, and science is at the heart of all the decisions we take. Over the past 15 years IES has conducted thousands of studies across different service areas.

  • Perform all tasks in an accurate, precise, autonomous, and timely manner based on the project- and subsequent Laboratory Planning of the Ecotox Biology department and according to GLP compliant SOP’s
  • Set-up, maintenance and subsequent performing of all static, semi-static and flow-through tests with all fish species across OECD’s
  • Perform general tasks including but not limited to drafting/revision of SOP’s, equipment calibration, lab maintenance, etc.
  • Setting, controlling, maintaining, and mounting of automated static, semi-static but in particular flow-through systems
  • Working with various fish species across all life stages incl. eggs: selecting, observing, registration of biometrical data and taking biological samples such as blood
  • Working with and maintenance of aquaria of various sizes allowing a high-through put
  • Preparing and applying chemical solutions across test systems
  • Taking samples and subsequently measuring biological, physical-chemical and physiological parameters
  • Entering data and working with different types of software
  • Preferably bachelor’s in biology (or related scientific domain)
  • A valid certification/license regarding working with animals LTK1 (or even better LTK 2) is mandatory
  • Preferably 2 years of experience in a GLP regulated environment
  • Preferably 2 years of experience with fish testing
  • Preferably 2 years of experience in performing OECD tests with (various) fish species in a GLP regulated CRO environment
  • Knowledge of OECD based fish testing in a GLP regulated environment
  • Knowledge of keeping, handling, sampling (blood, and other tissues) and testing fish
  • Knowledge of maintenance of flow-through systems
  • Knowledge of EIA is an asset but not mandatory
  • English (fluent), German (preferably fluent), French (would be an asset but not mandatory)
  • Working accurately and timely in a strictly regulated environment according to detailed SOP’s
  • Working strictly accordingly to the planned provided and delivering results prior to the respective deadline
  • Working and handling highly technical static, semi-static and especially flow-through systems and hereby performing the test accurately and in timely including performing the required manipulation of equipment, aquaria, etc.
  • Having an eye for detail hereby directly reporting failures or deviations
  • Working in a highly motivated and dynamic team
  • Working in a fast-paced environment within a CRO framework

Working environment: Flat hierarchies, short decision-making processes, and a friendly working atmosphere with modern working environment with the great laboratory infrastructure and state-of-the-art analytical equipment.

Onboarding: A comprehensive onboarding and induction program with mentors and buddies to help you get off to a smooth start.

Work-life balance: Through flexible working hours and opportunities for mobile working when applicable.

Get-togethers & events: Company parties and team events.

Catering: Free coffee and water dispensers, availability variety of food truck

Development opportunities: Development discussions and the opportunity for individual and regular further training, as well as the chance to pursue a variety of career paths within the Eurofins Group.

• Attractive benefits: company pension scheme, free language courses, subsidized yoga course and free parking.

If we have sparked your interest, please apply using our online form in less than 5 minutes by clicking on the “Apply now!” button. 

If you have any questions, Arpitha Vasudev (HR Manager Agroscience Europe) will be happy to assist you at [email protected] , phone number: +41 796765204.

About this role

Summary

Perform fish toxicity tests, manage aquatic systems, and analyze biological and chemical data.

Job title

Laboratory Technician - Aquatic Ecotoxicology

Experience level

2+ years

Minimum experience

2+ years exp

Industry

environmental testing

Location requirements

Witterswil, SO, Switzerland; remote work not specified.

Salary

Not specified

Visa sponsorship

H-1B sponsor history

Management role

No

Skills & keywords

Required skills

biologycertification/license LTK1handling fishOECD testslab equipment maintenance

Preferred skills

EIAfluent GermanFrench

Specializations

ecotoxicologyfish testingGLP regulated environmentflow-through systemsOECD tests
Locations

Structured locations inferred from the posting.

Witterswil, Switzerland

On-site City