Trex Ecology – Field Assistant​/Assistant Ecologist

Trex Ecology - Field Assistant/Assistant Ecologist

Paul Coulson | December 17th 2025

Trex Ecology Ltd is a small, well-regarded, aquatic ecology consultancy company based in Crieff, with staff across Scotland and Wales. We are ecologists first and foremost and strive to always ensure rivers improve. Our challenge is to consistently meet this aim while human activities increase the pressures on our catchments.

We have a diverse range of clients, predominantly in Scotland but increasingly with projects in the rest of the UK and in Ireland. We are five full‑time, one part‑time science staff and one part‑time administrator. We welcome everyone and maintain an inclusive work environment where our staff can be themselves.

We are looking for a Field Assistant/Assistant Ecologist to join us on a full‑time contract, starting in February 2026, ideally based in the Stirling/Perth/A9 corridor area. This is an entry level position with all necessary training provided, and following a six month probationary period you will be assigned to either the Pearl Mussel, Fish Ecology or Habitat/Morphology team depending on aptitude and personal choice.

Further training will then follow the CPD pathway for that team.

• 4-day winter working week;
• NEST Trex Ecology pension scheme;
• Vitality Health Insurance;
• Guaranteed inflationary pay uplift every year; and
• All required clothing, footwear, PPE, field equipment and office equipment as needed.

Applicants should be comfortable with the following:

• Working in moving water and remote locations;
• Using digital recording devices and forms;
• Working away from home, sometimes for several nights consecutively;
• Working as part of a wider field team with our project partners and clients.

Applicants should hold:

• A primary degree in a relevant subject;
• A postgraduate degree or one year’s experience in the aquatic ecology sector;
• A full clean driving licence.

Full‑time hours are based on 40 hours per week in summer and a four‑day 32‑hour week in winter, based on a fixed yearly salary. An additional 1.5 hours a week during the winter can be worked to cover the two‑week Christmas closure without using personal holiday entitlement.

If you wish to apply, please send CV and cover letter to  Interviews will be held in mid‑January.