Principal Scientist, Microbiological Quality & Sterility Assurance

Johnson & Johnson Limerick, Ireland Updated 1 October 2026
PharmaBiotechMedTechRegulatory AffairsQuality Assuranceheorgmpcroraveinform

Job description

At Johnson & Johnson, we believe health is everything. Our strength in healthcare innovation empowers us to build a world where complex diseases are prevented, treated, and cured, where treatments are smarter and less invasive, and solutions are personal. Through our expertise in Innovative Medicine and MedTech, we are uniquely positioned to innovate across the full spectrum of healthcare solutions today to deliver the breakthroughs of tomorrow, and profoundly impact health for humanity. Learn more at jnj.com . As guided by Our Credo, Johnson & Johnson is responsible to our employees who work with us throughout the world. We provide an inclusive work environment where each person is considered as an individual. At Johnson & Johnson, we respect the diversity and dignity of our employees and recognize their merit. Job Function: Quality Job Sub Function: R&D/Scientific Quality Job Category: Professional All Job Posting Locations: Limerick, Ireland Job Description: About MedTech Fueled by innovation at the intersection of biology and technology, we’re developing the next generation of smarter, less invasive, more personalized treatments. Your unique talents will help patients on their journey to wellness. Learn more at https://www.jnj.com/medtech Principal Scientist, Microbiological Quality & Sterility Assurance (MQSA) Johnson & Johnson - Vision The Principal Scientist, Microbiological Quality & Sterility Assurance (MQSA) position is responsible for the E2E execution of microbiological quality, sterility assurance policies and strategies for Johnson & Johnson Vision franchise which are aligned with the overall Johnson & Johnson microbiological sterility assurance strategic priorities. He/she will serve as the global technical leader in the areas of New Product Introduction, Method/Product Validations/Transfers, Regulatory Affairs Support, aseptic processing, sterilization, and microbiological quality with responsibility for all Johnson & Johnson Vision locations worldwide. This individual will be responsible for deployment of the company policy and company strategies with respect to cleanliness, aseptic processing, sterilization, clean rooms, water systems and microbiological quality related areas. This individual will be responsible for activities such as, but not limited to, the following: R&D: Core team member as required for NPI, selection of modalities, business case development, screening/feasibility cycle support, , protocol and report writing, liaise with Regulatory Affairs on potential requirements for submission. Drive new contract sterilisation site validation - on site visits, cycle development, process characterization, process validations, protocol and reports, regulatory affairs support for submissions, and questions from regulatory bodies. Support the development of new innovations in the area of contamination control and terminal sterilization, to include such activities as interaction with universities, internal and external experts, participating in development of new products. Work directly with the Technical Vertical MQSA Leaders to find break-through technologies to enable future growth and innovations. Work directly with the packaging leaders to define package needs for terminal sterilization and/or aseptic processing, and validation of the primary packaging, review and approval of protocols and reports as SMEs. Work directly with the biocompatibility and chemistry to support the impact of sterilisation on Biocomp and chemistry requirements for terminal sterilization and/or aseptic processing, and validation of the NPI, review and approval of protocols and reports as SMEs. Life cycle management of aseptic processing, microbiological and/or sterilization process for product portfolio within Johnson & Johnson Vision. Support and drive the Technology Strategy for Johnson & Johnson Vision. Partner with R&D and drive sterility assurance strategy for new product development to include the BCP and environmental footprint for sterilization and contamination control. Where applicable, own and drive test method development, validations and transfer including review and approval of protocols and reports as SMEs. Plan: Support for the selection of new manufacturing operations (to include aseptic processing manufacturing sites, contamination control strategy, review of site competencies, contract sterilization, contract laboratories, external manufactures, critical suppliers and third-party manufacturers). Review and SME input of quality agreements for sterilisation contracts, EMs, contract labs etc. Site visits as required and requested, audit support and follow up post audit to drive compliance. Source: Mandatory involvement in due diligence for sterile or microbiologically controlled manufactured products, and provide technical SME support for integration into J&J. Provide technical SME support for procurement activities that relate to sterile or microbiologically controlled products that are externally manufactured. Provide input in the design of new manufacturing processes, controlled environments and packaging from a microbiological and terminal sterilization standpoint. Input for the design of water systems and the design of controlled environments and cleanliness control strategies. Support change control and process improvements, cost avoidance projects, BCP, increased capacity. Mandatory involvement in sterilisation, microbiology, cleanroom and utilities procedure updates. Microbiological/chemical, new equipment and test method validations – input, protocol/report review and approval. Standard gap assessments completion and support for gap closure. Kaizen support, core team members for site issues. Investigation support for sterilisation/microbiology/utilities/cleanroom, sterility issues. Regulatory Affairs support for site changes/notifications. Improve on- site core competencies for sterilisation/microbiology/utilities/cleanroom, sterility issues. Regulatory and internal audit readiness program support for on site audits, including site walkabouts. Support on site external and internal regulatory audit visits, presentation to site auditors support and follow up post audit to drive compliance. Support for onsite GEMBA walks of cleanrooms and manufacturing areas. Support for Sterilisation/Environmental/Utility annual revalidation activities – requirement definitio

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