Our mission at H.E.L Group is to make a healthier, sustainable, safer world for everyone. We equip scientists with the right tools and knowledge to develop safe, efficient new processes and molecules that benefit the world and its population. Our core values are:

Being insightful through experience,

Being collaborative by design,

Being tenacious in spirit,

Being proud of progress.

We operate globally with offices in London, UK (HQ), Princeton, USA, Beijing, China, India and Singapore and field-based staff across our direct regions and trusted partners in distribution territories.

The Role

  • Location: UK Head Office, Hemel Hempstead
  • Department: Operations

Primary purpose

The role requires a mechanical engineer to design and modify laboratory-scale equipment for use in chemical research and development. Examples include small pressure vessels, lids with ports to take different probes, stirrers and frames to support the apparatus. This may be part of a more elaborate assembly that may include piping, Swagelok fittings as well as various valves and sensors. In other cases, similar existing apparatus may need to be modified or extended, involving both design and then assembly and testing. Normally you will work as part of a team to define the project scope and objectives, involving all relevant stakeholders and ensuring technical feasibility. Responsibility will include the selection and maintenance of all production, test and quality control equipment required for supply of mechanical parts. Exceptional skills and experience in assembly and testing of mechanical parts is essential.

Candidate Requirements

Essential Skills and Experience

  • Experience with 3D CAD packages, preferably Autodesk Inventor (SolidWorks, or similar, is a possibility)
  • Experience with tight-tolerance design engineering and producing suitable engineering drawings for outsourced manufacture
  • Proven background in assembly and use of hand tools, machine tools and CNC equipment
  • Ability to effectively work on and manage many projects and priorities at one time
  • A track record of getting things done on time, within tight deadlines and on budget
  • Competent in the use of Microsoft Office (Word, Excel, PowerPoint and Outlook), email and use of the internet

Desirable Skills and Experience

  • Strong assembly, machining & welding skills
  • Ability to work under pressure of multiple projects and tight deadlines
  • Excellent troubleshooting skills
  • Ability to be flexible in work schedule and accommodate unexpected work changes
  • Ability to work effectively both interdepartmentally and internationally
  • Knowledge of other languages would be helpful

A relevant educational background is required, but experience and track record are most important.

Training provided

  • Up to one-month initial training on the H.E.L product lines
  • Training on company business information systems applicable for the role
  • Health & Safety training, as required
  • On the job training

How to apply

Closing date: 1 October 2026.

Please send your CV and covering letter to careers@helgroup.com, or apply using the form below.

You can download the full position description here

To apply for this position, please complete the form below, and upload your CV and covering letter.
(Please no agencies)