Security Officer - Shrewsbury, MA (Sat & Sun, 6p-6a)

Charles River
Shrewsbury, MA

Req ID #: 233887

Shrewsbury, MA, US

Weekend

Part time

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.

Job Overview

Charles River Laboratories is seeking a PART TIME (24 hrs. per week, benefit eligible) Security Officer for the Shrewsbury, MA site.

Shift is overnights, Saturday & Sunday, 6pm-6am (12hrs) + 15% Differential

Following established procedures and guidelines, monitor and ensure compliance with company security and safety policies. Monitor all access activities to the facility by checking and issuing security badges. Monitor security, safety and integrity of buildings and environs and respond to any unusual circumstances. Protect facility from unwanted actions or espionage. Provide a safe and secure environment for employees, clients, visitors and animals.

Job Description

ESSENTIAL DUTIES AND RESPONSIBILITIES:

  • Greet, screen, record and allow visitors and employees admittance to the site in accordance with company procedures.
  • Monitor security systems and/or environmental systems and investigate and/or report any incidents.
  • Report all unauthorized persons to the proper authorities and initiate action to protect employees, animals, products, and physical site. In so doing, the incumbent should not place him or herself in harm’s way.
  • Ensure the physical safety and security of the facility by enforcing company policies and procedures; provide a deterrent and detection factor for wrongful activity; conducts patrols and monitors the status of the physcial security measures; and monitors the critical building systems.
  • Physically walk the facility grounds to complete visual inspection of site security on regularly scheduled tours.
  • Document all security department activity and generates incident reports as necessary.
  • Monitor facility equipment during tours and report equipment failure, reset alarms as instructed and/or assist in minor repair as directed. Provides effective secondary communication during business hours; and primary communications during non-business hours.
  • Contact emergency personnel as required and in accordance with adherence to pertinent departmental policies, practices, and procedures.
  • Assist in directing appropriate emergency response efforts when required.
  • Perform all other related duties as assigned.

Job Qualifications

  • Education: High school diploma, General Education Degree (G.E.D.) or the equivalent. Associates degree preferred.
  • Experience: 2 -3 years experience with at least six to twelve months of related security experience and/or training.
  • An equivalent combination of education and experience may be accepted as a satisfactory substitute for the specific education and experience listed above.
  • Must be willing to work on a Part time schedule – 24hrs per week (position will be Benefits Eligible)
  • Shift: Sat & Sun 6pm-6am (12hrs) + 15% Differential.

Compensation Data

The pay range for this position in the USA is $22.00/hr. Please note that salaries vary within the range based on factors including, but not limited to, experience, skills, education, certifications, location and any collective agreements, if applicable.

Physical Requirements

About Corporate Functions The Corporate Functions provide operational support across Charles River in areas such as Human Resources, Finance, IT, Legal, Sales, Quality Assurance, Marketing, and Corporate Development. They partner with their colleagues across the company to develop and drive strategies and to set global standards. The functions are essential to providing a bridge between strategic vision and operational readiness, to ensure ongoing functional innovation and capability improvement.

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 over 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 worked on 80% of the drugs approved by the U.S. Food and Drug Administration (FDA) in the past five years.

We’re committed to providing benefits that elevate your quality of life. Based on your position these may include: bonus/incentives based on performance, 401K, paid time off, stock purchase program, Health and wellness coverage, employee and family wellbeing support programs, and work life balance flexibility.

Equal Employment Opportunity

Charles River is an equal opportunity employer and is committed to providing equal employment opportunities for all qualified applicants and employees without regard to race, color, sex, religion, national origin, ancestry, age, mental or physical disability, family status, pregnancy, military or veteran status, or any other characteristic protected by federal, state, or local laws.

It is unlawful in some states (including Massachusetts) to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

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 [email protected]. This contact is for accommodation requests for individuals with disabilities only and cannot be used to inquire about the status of applications.

For more information, please visit

Posted 2026-05-27

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