Animal Technologist - (Humanized Model Production)

Req ID #:  209431

Wilmington, MA, US, 01887

For 75 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.


IMPORTANT:   In order to be considered for this position, a resume/CV must be uploaded and submitted during the application process.  Please make sure work history and education are added correctly.   

Job Summary

We are seeking an Animal Technologist for our Gnotobiotics: Humanized Mouse Production Department located in Wilmington, MA.  


The Technologist will assist in the production, maintenance and shipment of humanized mice to customers. 


SHIFT:   FIRST (Monday-Friday)

*However, this role does require working Saturdays and some holidays on a rotating schedule*



  • Assist production staff in the creation and maintenance of humanized mice. 
  • Perform routine skills including:
  • Administration of various therapeutic measures by IV , SQ, topical, oral routes, etc.
  • Nail//teeth clipping/trimming.
  • Venipuncture techniques i.e. submandibular blood collection.
  • Proficient animal restraint. 
  • Monitor critical care animals. 
  • Weighing animals and documenting animal weights.
  • Perform euthanasia.
  • Animal identification ie:  earmarking and lab-stamp.
  • Maintain and monitor the health, production, and physical environment of Charles River animals within isolators, micro-isolator caging and/or ventilated cage systems.
  • Perform animal husbandry which will include feeding, watering and cleaning cages.
  • Maintain physical environment cleanliness, biosecurity and accurate department/animal records within the internal database system.
  • Comply with all Standard Operating Procedures (SOPs) and operating equipment and supplies per safety and ergonomic guidelines.
  • Perform animal follow-up observations or new findings as required. 
  • Maintain appropriate clinical observation records for each animal in accordance with study and regulatory requirements.
  • Assist in maintaining accurate record keeping procedures per study protocol.
  • Assist in providing leadership, training, and guidance to other personnel.  
  • Assist in keeping inventory and stocking the laboratory rooms (i.e., drugs, supplies and reagents).
  • Assist in organizing and maintaining the laboratory rooms.
  • May be responsible for tissue sampling, routine animal manipulations and administration of fluids or other treatments as required.
  • Perform all other related duties as assigned.



  • High school diploma or GED (General Education Diploma)
  • 1+ years related experience and/or training.
    • An equivalent combination of education and experience may be accepted as a satisfactory substitute for the specific education and experience.
  • Understanding of Standard Operating Procedures.
  • Excellent organizational, time management and recordkeeping skills.
  • Excellent communication skills both written and verbal.
  • Proficient in routine veterinary technical and husbandry techniques.
  • Proficient in MS Office Suite.


  • Associates degree in Biology, Animal Sciences or a related study or a graduate of a collegiate veterinary technology program accredited by the American Veterinary Medical Association Committee on Veterinary Technician Education and Training Activities or equivalent program in veterinary technology. 
  • AALAS certification at ALAT or higher level.
  • Cell Work, i.e, Cell prep, Cell thawing, cell counting, resuspended in appropriate volume.
  • Experience in intravenous Administration (Tail Vein) technique.
  • Experience with Aseptic techniques.

IMPORTANT: A resume is required to be considered for this position. If you have not uploaded your resume in your candidate profile, please return to upload field and attach your resume/CV. 

About Research Models & Services 
Fundamental to basic research and discovery is the use of in vivo models to help identify disease targets and determine potential biological pathways that regulate the condition.  As the world’s leader in the production and distribution of the highest quality research animal, with 1 out of 2 animal models produced for preclinical research globally, we understand the importance of this step. With seven decades of experience, our expertise is unmatched, allowing us to provide you with the perfect model, including disease-specific and preconditioned options, for basic research and beyond. 


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 20,000 employees within 110 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.

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 86% of the drugs approved by the FDA in 2021.


Equal Employment Opportunity
Charles River Laboratories is an Equal Opportunity Employer - all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran or disability status.

If you are interested in applying to Charles River Laboratories and need special assistance or an accommodation due to a disability to complete any forms or to otherwise participate in the resume submission process, please contact a member of our Human Resources team by sending an e-mail message to This contact is for accommodation requests for individuals with disabilities only and cannot be used to inquire about the status of applications.

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Nearest Major Market: Boston

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