Senior Microbiologist

Req ID:  180451

Ballina, IE, F26D786

For 70 years, Charles River employees have worked together to assist in the discovery, development and safe manufacture of new drug therapies. When you join our family, you will have a significant impact on the health and well-being of people across the globe. Whether your background is in life sciences, finance, IT, sales or another area, your skills will play an important role in the work we perform. In return, we’ll help you build a career that you can feel passionate about.



We are seeking an experienced Senior Microbiologist for our Biologics Department located in Ballina, Co. Mayo. You shall be reporting to the Microbiology Department Manager.

The main duties & responsibilities shall be;  

  • GMP Compliance.
  • Protocol writing
  • Disinfectant Efficacy Testing and Validation
  • Perform Endotoxin testing, Sterility testing, Efficacy of Antimicrobial Effectiveness test, Environmental Monitoring, Water testing, Microbial Limit testing, Bioburden testing.
  • Qualification/Validation of test methods
  • Carry out Quality Control Checks
  • Assist in Laboratory Investigations
  • Trending of Laboratory Data
  • Update SOP's as required
  • Provides training to other members of the Microbiology team as required.
  • Proactively identifies and implements Laboratory process improvements. 

The following are minimum requirements related to the Laboratory Technician position;

  • BSc. in a relevant science discipline
  • Hands on work experience in a regulated Microbiology Laboratory.
  • Experience in Disinfectant Efficacy Testing and Validation
  • 3-5 years’ experience of working in a GMP environment
  • Excellent communication skills, both verbal and written
  • Collaboration and Teamwork. Maintains the highest standards of ethical behavior
  • Results and performance driven
  • Strong analytical ability and associated problem solving
  • Good time management and attention to detail
  • Knowledge and proficient in the use of Word, Excel etc.

About Biologics Testing Solutions

With more than 50 years of experience and proven regulatory expertise, the Charles River Biologics group can address challenging projects for biotechnology and pharmaceutical companies worldwide. Offering a variety of services such as contamination and impurity testing, protein characterzation, bioassays, viral clearance studies and stability and lot release programs, we support clients throughout the biologic development cycle, from the establishment and characterization of cell banks through preclinical and clinical studies to marketed products. Whether clients need stand-alone services, a unique package of testing, or insourced support, our Biologics group can create a custom solution to suit their needs.  Each year more than 20,000 biologic testing reports are sent each and over 200 licenses products are supported by our biologics testing solutions team.


About Charles River

Charles River is an early-stage contract research organization (CRO). We have built upon our foundation of laboratory animal medicine and science to develop a diverse portfolio of discovery and safety assessment services, both Good Laboratory Practice (GLP) and non-GLP, to support clients from target identification through preclinical development. Charles River also provides a suite of products and services to support our clients’ clinical laboratory testing needs and manufacturing activities. Utilizing this broad portfolio of products and services enables our clients to create a more flexible drug development model, which reduces their costs, enhances their productivity and effectiveness to increase speed to market.


With over 14,000 employees within 80 facilities in 20 countries around the globe, we are strategically positioned to coordinate worldwide resources and apply multidisciplinary perspectives in resolving our client’s unique challenges. Our client base includes global pharmaceutical companies, biotechnology companies, government agencies and hospitals and academic institutions around the world. And in 2018, revenue increased by 22% to $2.27 billion from $1.86 billion in 2017.


At Charles River, we are passionate about our role in improving the quality of people’s lives. Our mission, our excellent science and our strong sense of purpose guide us in all that we do, and we approach each day with the knowledge that our work helps to improve the health and well-being of many across the globe. We have proudly supported the development of ~85% of the drugs approved by the FDA in 2018.