Security Officer

Allied Universal, North America's leading security and facility services company, offers rewarding careers that provide you a sense of purpose. While working in a dynamic, welcoming, and collaborative workplace, you will be part of a team that contributes to a culture that positively impacts the communities and customers we serve. We offer a comprehensive benefits package that may include medical, dental, and vision coverage, life insurance, a retirement plan, employee assistance programs, company discounts, and other perks, depending on the position and eligibility.

As a Security Officer - Aero/Defense Flex Patrol in Saint Charles, MO, you will serve and safeguard clients in a range of industries such as Aero/Defense, and more.

Join a leading team where flexibility meets opportunity. As a Part-Time Security Officer, you'll use our exclusive Claim a Shift platform to view and Pick up open shifts based on your availability—giving you the freedom to build a schedule that works for you, while gaining valuable site experience across various industries. Whether you're looking to supplement your income or take the first step toward a full-time role, this position offers unmatched access to hands-on experience and growth opportunities. As a Security Officer with Allied Universal in the aerospace and defense environment, you will monitor and patrol designated areas, helping to deter security-related incidents while fostering a secure atmosphere for all personnel. You will conduct routine patrols, remain highly visible, and provide outstanding customer service and communication. In this dynamic setting, you will be part of a team that values reliability, innovation, and integrity, making a meaningful impact every day. Join us to be part of a caring culture that puts people first and delivers through teamwork.

Position Type: Part Time

Pay Rate: $23.27 / Hour

Job Schedule:

What You'll Do:

• Use our proprietary scheduling platform to claim open shifts at client sites
• Support operations across a range of environments including commercial real estate, healthcare, and education
• Receive site-specific training and guidance from experienced teams
• Deliver consistent, professional security presence and customer service
• Be ready to fill in at short notice when urgent needs arise

Responsibilities:

• Provide customer service to clients by carrying out security-related procedures, site-specific policies and/or emergency response activities as needed.
• Respond to incidents and critical situations in a calm, problem-solving manner.
• Conduct regular and random patrols around the location and perimeter. Working environments and conditions may vary by client site.

What We're Looking For:

• Availability across various days and shifts
• Reliability and ability to adapt to different post assignments
• A desire to gain broad experience and grow within the company
• Interest in transitioning into full-time roles when available

Minimum Requirements:

• Must have at least 1 year of security-related experience.
• Must possess an active Department of Defense Secret Clearance.
• Must be at least 21 years of age.
• A Guard Card or license is preferred.
• CPR certification is preferred.
• Be at least 18 years of age for unarmed roles; 21+ years of age for armed roles.
• Possess a high school diploma or equivalent.
• As a condition of employment, applicants will be subject to a background investigation in accordance with all federal, state, and local laws.
• Allied Universal will consider qualified applications with criminal histories in a manner consistent with applicable laws.
• As a condition of employment, applicants will be subject to a drug screen to the extent permitted by law.
• Licensing requirements are subject to state and/or local laws and regulations and may be required prior to employment.
• A valid driver's license will be required for driving positions only.

Why Join Us:

• Flexible Scheduling: Choose from a variety of open shifts that align with your availability and lifestyle.
• Career Growth: Clear path to full-time roles and ongoing advancement through paid training programs.
• Smart Tools: Access exclusive technology for real-time shift visibility and claiming.
• Full-Time Benefits: Health insurance, 401(k) plans, and a comprehensive benefits package for full-time employees.
• Employee Perks: Enjoy discounts at restaurants, entertainment venues, and more through our perks program.

Allied Universal is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race/ethnicity, age, color, religion, sex, sexual orientation, gender identity, national origin, genetic information, disability, protected veteran status or relationship/association with a protected veteran, or any other basis or characteristic protected by law. For more information:

If you have any questions regarding Equal Employment Opportunity, have difficulty using the online system and require an alternate method to apply, or require an accommodation at any time during the recruitment and/or employment process, please contact our local Human Resources department. To find an office near you, please visit: