Process Engineer Lead (Injection Moulding)

We are looking for an experienced Senior / Lead Injection Moulding Engineer to join our engineering team and provide specialist technical leadership across injection moulding, polymer processing, tooling, and new product introduction. This role would suit a highly experienced moulding engineer with strong hands-on process knowledge, deep understanding of polymers, and proven experience working closely with mould toolmakers to deliver robust tooling and repeatable manufacturing processes.

You will play a key role in developing and optimising moulding processes, resolving tooling and processing issues, supporting new product development, and ensuring moulded components consistently meet demanding product specifications. You will be a key player in our Fluid Path NPI team and help us drive forward our ambitious goals.

The core function of Watson-Marlow’s NPI teams is to deliver new products to market. Fluid Path NPI also acts as a custodian of design intent for existing Fluid Path products and must authorize any changes to product or manufacturing processes. Key accountabilities include: Lead injection moulding process development, optimisation, troubleshooting, and validation.

Fine tune moulding parameters to achieve dimensional, functional, visual, and mechanical product specifications. Provide expert support on polymer selection, material behaviour, and processing characteristics. Work closely with mould toolmakers on new mould design, tool trials, modifications, and issue resolution. Support new product introduction from design concept through to production release.

Diagnose and resolve moulding defects, tooling issues, material concerns, and process instability. Establish robust process windows and support capability improvement. Review tooling designs and provide input on gating, cooling, venting, ejection, parting lines, and manufacturability. Support validation, quality investigations, root cause analysis, and continuous improvement activity.

Define gauging concepts for critical moulded features and product interfaces. Support the design, specification, validation, and implementation of dedicated inspection fixtures and functional gauges. Work with internal or external gauge suppliers to develop robust and repeatable gauging solutions. Support gauge repeatability and reproducibility studies.

Ensure gauging strategies are suitable for; Mould trial evaluation, Process validation and production quality control. Ensure metrology and gauging outputs are clearly linked to product specifications and control plans. Mentor engineers and technicians in best practice injection moulding and tooling principles.