Principal Scientist – Polymer & Materials Science
Location: Ballina, Co. Mayo
Department: Research & Development
An experienced Principal Scientist is required to provide technical leadership in polymer materials development within a medical device R&D environment. This role focuses on the selection, optimisation, and development of polymer materials used in extrusion, heat-sealing, casting, blowing, and injection/insert moulding processes. The position is highly cross-functional and involves collaboration with engineering, quality, clinical, and manufacturing teams, as well as mentoring and coaching colleagues.
This is a laboratory-based, on-site role requiring strong experimental, analytical, and problem-solving capabilities. The successful candidate will lead material innovation initiatives, support product development programmes, and play a key role in scaling technologies from lab to production.
Key Responsibilities
Lead the sourcing, design, development, and optimisation of polymer formulations for extrusion and moulding applications
Conduct and oversee research to improve material performance, durability, and stability
Develop and execute experimental plans, including formulation trials and material performance testing
Provide technical leadership in material, process, and equipment selection
Support cross-functional product development and root cause investigations
Engage with suppliers and external partners on material and technology development
Stay current with emerging trends in polymer and materials science
Generate technical documentation, reports, and intellectual property
Ensure compliance with regulatory and quality requirements
Experience & Education Requirements
PhD in Polymer Science, Materials Science, Chemical Engineering, or related field
10+ years’ experience in polymer R&D and manufacturing environments
Proven leadership on technical or scientific projects
Technical Expertise
Strong knowledge of polymer formulations, adhesives, and material chemistry
Experience with extrusion, heat-sealing, casting, blowing, and injection/insert moulding
Ability to design and execute complex experiments and interpret data
Experience scaling technologies from laboratory to pilot and full production
Strong analytical, structured problem-solving, and innovation skills
Experience mentoring and providing technical guidance
Understanding of industry trends, market needs, and new technologies
Language Requirement: Fluent English
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