University Relations

Summer Intern Program

Come on in and be part of our team and experience Charles River from the inside! Read helpful tips from former interns who are now Charles River employees. Want to hear from current interns? Read about their internship adventure.

We offer internships in a variety of areas from science, information technology, finance, human resources and sales & marketing. We provide hands on experience with opportunities for students to better understand the industry, build relationships with business partners, leaders and staff and develop personally and professionally through our Summer Intern Program.

Starting your journey on a new career path can be one of the most exciting times in your life. The right internship can help you take the next critical step in shaping a successful and rewarding career. Join Charles River as an intern to gain professional experience and develop in your chosen career path before you graduate from college. 

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2026 Summer Intern - Corporate Tax US Feb 12, 2026
Intern - Laboratory Analyst
Intern - Laboratory Analyst Montreal (Senneville), Quebec, CA, H9X 3R3 Feb 12, 2026
Montreal (Senneville), Quebec, CA, H9X 3R3 Feb 12, 2026
2026 Summer Intern- Tox and Safety Pharm US Feb 11, 2026
2026 Summer Intern - Commercial Sales Training US Feb 11, 2026
Summer 2026 Intern - Accugenix Microbiology US Feb 10, 2026
2026 Summer Intern - Veterinary Technology US Feb 9, 2026
2026 Summer Intern - Strategic Marketing Events US Feb 6, 2026
2026 Summer Intern - Lab Animal Medicine 1 US Jan 30, 2026
Lab Assistant - In Vivo (Temp)
Lab Assistant - In Vivo (Temp) Shrewsbury, MA, US, 01545 Jan 21, 2026
Shrewsbury, MA, US, 01545 Jan 21, 2026
Lab Assistant - In Vivo (Temp)
Lab Assistant - In Vivo (Temp) Shrewsbury, MA, US, 01545 Jan 21, 2026
Shrewsbury, MA, US, 01545 Jan 21, 2026
2026 Summer Intern - Veterinary Technician US Jan 20, 2026
2026 Summer Intern - Analytical Chemistry US Jan 20, 2026