Mechanical Design Engineer

Cookstown, Northern Ireland, United Kingdom • Posted June 29, 2026

Job Type: Full time
Location: Cookstown, Northern Ireland
Posted: June 29, 2026
Category: Engineers
Application Deadline: August 08, 2026

Role Description

About Us
TES Group is a leading provider of engineering solutions to the water and wastewater industry. We are currently seeking a skilled and motivated Mechanical Design Engineer to join our team in Cookstown. This is an excellent opportunity to contribute to technically challenging projects within a multidisciplinary environment.


The Role
As a Mechanical Design Engineer, you will be responsible for the design and delivery of mechanical elements within water and wastewater treatment projects. You will work alongside process, electrical, and ICA engineers to produce high-quality design packages in line with client requirements.

Key Responsibilities:

  • Mechanical design of water/wastewater projects in line with client specifications
  • Production of Process & Instrumentation Diagrams (P&ID’s) using Plant 3D
  • Production and co-ordination of 3D models using Revit
  • Produ...

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