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Jobs

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Cagewash Technician

Req ID #: 225827

We are seeking a Cagewash Technician for our Insourcing Solutions site located in Baltimore, MD.

In Vivo Technician I- 2nd Shift

Req ID #: 225903

We are seeking a full time Technician I for our 2nd shift In Vivo team at our Safety Assessment site located in Spencerville, OH.

Laboratory Assistant I-Histology-1st shift

Req ID #: 225977

We are seeking an entry level Lab Assistant I for our Histology Team located in Ashland, OH.

Laboratory Assistant I-Histology-2nd Shift

Req ID #: 225978

We are seeking an entry level Lab Assistant I for our 2nd shift Histology Team located in Ashland, OH.

2025 Summer Intern - Formulations

Req ID #: 225993

Responsible for routine laboratory procedures (e.g., animal care, facility cleaning, labeling, lab support basic procedures, etc.), facility/groundskeeping, and/or other administrative/IT functions, as assigned.

2025 Co-Op Formulations

Req ID #: 225995

A Technician I will prepare basic dosing material and samples for vehicles, solutions, suspensions, diets, and dispensations independently with oversight

2025 Summer Intern- Analytical Chemistry

Req ID #: 226055

Charles River is committed to providing its people an environment that fosters learning and offers opportunities to have a fulfilling career built on strengths, supported by our learning and development framework. CRL DNA, the core set of behaviors that will enable us to live our values of Care, Lead, Own, and Collaborate and fuel the success of our business. These behaviors are shared across all roles and functions and will help support our learning and development journey at Charles River.

2025 Summer Intern - Facilities/Maintenance Intern

Req ID #: 226118

Schedule Monday through Friday, 7am-3:30pm

Research Technician Assistant 1 1 1

Req ID #: 226171

We are seeking an experienced Research Technician Assistant for our Safety Assessment site located in Reno, Nevada.

Technician I, Technical Operations

Req ID #: 226195

We are seeking a Technician I, Technical Operations for our Safety Assessment site located in Ashland, OH. This is a full-time position that requires 15-19 weeks of training Tuesday-Friday 6am-430pm at $19/hour. After training the WEEKDAY shift is Tues-Fri 6am-430pm; every 4th weekend, every other holiday. We also have weekend shifts available. The weekend schedules are Friday-Sunday or Saturday-Monday 6am-630pm, every other holiday after training. There is a 10% pay differential for Saturday/Sunday hours only.