Principal Scientist – Polymer & Materials ScienceLocation:Ballina, Co. MayoDepartment:Research & DevelopmentAn experiencedPrincipal Scientistis required to provide technical leadership in polymer materials development within a medical device R&D environment. This role focuses on theselection, optimisation, and development of polymer materialsused 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 ResponsibilitiesLead the sourcing, design, development, and optimisation of polymer formulations for extrusion and moulding applicationsConduct and oversee research to improve material performance, durability, and stabilityDevelop and execute experimental plans, including formulation trials and material performance testingProvide technical leadership in material, process, and equipment selectionSupport cross-functional product development and root cause investigationsEngage with suppliers and external partners on material and technology developmentStay current with emerging trends in polymer and materials scienceGenerate technical documentation, reports, and intellectual propertyEnsure compliance with regulatory and quality requirementsExperience & Education RequirementsPhD in Polymer Science, Materials Science, Chemical Engineering, or related field10+ years' experience in polymer R&D and manufacturing environmentsProven leadership on technical or scientific projectsTechnical ExpertiseStrong knowledge of polymer formulations, adhesives, and material chemistryExperience with extrusion, heat-sealing, casting, blowing, and injection/insert mouldingAbility to design and execute complex experiments and interpret dataExperience scaling technologies from laboratory to pilot and full productionStrong analytical, structured problem-solving, and innovation skillsExperience mentoring and providing technical guidanceUnderstanding of industry trends, market needs, and new technologiesLanguage Requirement:Fluent English