Top 186 Security officer Jobs in O'fallon, Mo

Campus Security Officer
Francis Howell School District —O'Fallon, MO
- $17.04 - $20.87 an hour
- Nights as needed
- School experience
- High school diploma or GED
- Public school
- Paid holidays
- Disability insurance
Security Specialist
FedEx —Berkeley, MO
- $35.49 - $44.37 an hour
- Full-time
- Mid-level
- 3 years
- Communication skills
- Flexible schedule
4d
Division Protective Services Specialist (St. Louis)
QuikTrip —Saint Charles, MO
- $32.55 - $38.58 an hour
- Background check
- 18 years or older
- CPR Certification
Security Officer - Armed
St. Luke's Hospital - MO —Chesterfield, MO
- High school diploma or GED
- Operating room
- Entry level
- Health savings account
- 401(k)
Security Alarm Dispatcher - Training Provided - 7:30 am- 6pm (8hr or 10hr shifts)
Interface Security Systems LLC —St. Louis, MO
- From $22 an hour
- 8 hour shift
- Background check
- Pass drug screening
- Mid-level
- Benefits from day one
- Flexible schedule
Quick Apply
Security Officer
SSM Health —Lake Saint Louis, MO
- Part-time
- Background check
- Hospital
- Pass drug screening
- Paid parental leave
- Health insurance
Concierge Security - Security Agent
GardaWorld Security Services U.S. —Saint Peters, MO
- $19 an hour
- Part-time
- Background check
- Military
- Computer literacy
- Paid holidays
- Disability insurance
Quick Apply
Surveillance Security - Logistics Officer
GardaWorld Security Services U.S. —Saint Peters, MO
- $19.97 an hour
- Part-time
- Background check
- Military
- Writing skills
- Paid holidays
- Disability insurance
Quick Apply
3d
Security Officer - Mid Shift
TRUE MANUFACTURING GROUP —O'Fallon, MO
- $20.50 - $25.50 an hour
- Overtime
- Background check
- Microsoft Outlook
- Military
- Health savings account
- Health insurance
Security Guard (Nights)
Wentzville School District —Wentzville, MO
- $15.49 an hour
- Entry level
- Health insurance
- Dental insurance
Security Guard (Day) (Parking Lot) (East High School)
Fort Zumwalt School District —Saint Peters, MO
- $15 an hour
- Full-time
- High school
- Ability to lift 50 pounds
- Children
5d
Senior Security Officer
Principia The —St. Louis, MO
- $24.15 - $28.09 an hour
- Full-time
- School experience
- Microsoft Outlook
- Military
- 403(b) matching
- Relocation assistance
Senior Physical Security Administrator
Mastercard —O'Fallon, MO
- $48,000 - $74,000 a year
- Online Application
- Military
- High school diploma or GED
- Driver's License
- Paid jury duty
- Health savings account
Security Alarm Dispatcher - Training Provided- 2:30pm-12am
Interface Security Systems LLC —St. Louis, MO
- From $22 an hour
- 8 hour shift
- Background check
- Pass drug screening
- Office
- Benefits from day one
- Flexible schedule
Quick Apply
Alarm Monitoring Dispatcher 5:00a-3:30p - Training Provided!
Interface Security Systems LLC —St. Louis, MO
- From $22 an hour
- 8 hour shift
- Background check
- Pass drug screening
- Mid-level
- Benefits from day one
- Flexible schedule
Quick Apply
2d
Unarmed Security Officer - Full Time
Prosegur —Saint Charles, MO
- $20 an hour
- Full-time
- Clean driving record
- Computer literacy
- Pass drug screening
Quick Apply
Security Officer
St. Luke's Hospital - MO —Chesterfield, MO
- Full-time
- Hospital
- High school diploma or GED
- Team management
Quick Apply
11d
Alarm Monitoring Dispatcher 2:30pm - 12:00am - Training Provided!
Interface Security Systems LLC —St. Louis, MO
- From $22 an hour
- 8 hour shift
- Background check
- Pass drug screening
- Mid-level
- Benefits from day one
- Flexible schedule
Quick Apply
2d
Loss Prevention Associate
Walmart —Chesterfield, MO
- $18.50 - $31.50 an hour
- Full-time
- High school
- Mid-level
- Paid jury duty
- Disability insurance
Security Lead Supervisor
Allied Universal —Saint Charles, MO
- $65,000 a year
- Full-time
- Military
- High school diploma or GED
- Driver's License
- AD&D insurance
- Paid holidays
Quick Apply
13d

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security officer jobs near o'fallon, mo

Campus Security Officer

Francis Howell School District -
O'Fallon, MO

Apply Now

Job Details

$17.04 - $20.87 an hour

Benefits

Paid holidays
Disability insurance
Health insurance
Dental insurance
Employee assistance program
Vision insurance
Life insurance
Paid sick time

Qualifications

Conflict de-escalation
De-escalation support in education
Experience working with high schoolers
Working with students
Public safety procedures
Safety standard operating procedures
Physical security emergency response

Full Job Description

JobID: 10227

Position Type:
Support Staff/Campus Security Officer

Date Posted:
8/7/2026

Location:
Francis Howell High School

Closing Date:
09/07/2026

Salary: Entry rate of $17.04 to $20.87 per hour depending on experience

Reports To: Director of Safety and Security/Building Administration

Typical Work Schedule/Hours (May vary depending on location): This posting is for Francis Howell High

192 Day work calendar working an extended school year with Fall, Winter, Spring, and Summer breaks off

Monday – Friday
6:30 AM – 3:00 PM or 9:00 AM – 5:30 PM
Some nights may be required for events/student activities

About Us
The Francis Howell School District (FHSD) is a great place to live, work, and go to school. FHSD is committed to attracting and retaining top-tier employees who are motivated to create a positive and effective 21st-century learning environment for students.

Job Summary
To help maintain a safe, secure, and orderly environment for students, staff, and visitors. The security guard supports the school community by monitoring campus activity, responding to and reporting incidents, and reinforcing district policies and safety protocols.

Key Responsibilities

Campus Safety & Supervision:

Monitor entrances, hallways, cafeterias, parking lots, and school grounds.
Greet and check in visitors according to District procedures.
Assist with supervision during arrival, dismissal, passing periods, and lunch.
Maintain a visible, approachable presence to deter unsafe or disruptive behavior.

Response & Communication:

Respond quickly and appropriately to altercations, disturbances, or emergencies.
Communicate clearly with administration, staff, and local authorities as needed.
Maintain accurate records of incidents and security-related activities.

Support & Partnership:

Collaborate with administrators and staff to uphold a safe and respectful environment.
Assist with safety drills and event security.
Promote positive relationships with students and serve as a role model.

Minimum Qualifications

Education: High school diploma or equivalent preferred.

Experience: Previous experience in security, law enforcement, or a school environment preferred.

Skills: Strong communication, conflict de-escalation, and observation skills.

Knowledge: Familiarity with safety procedures, emergency response, and radio communication.

Abilities: Work effectively with students, remain calm under pressure, and adapt to a changing environment.

Benefits

FHSD offers a comprehensive employer-paid benefits package to eligible employees including:

Medical and dental plan options
Vision coverage
Employee Assistance Program (EAP)
District-paid basic life insurance ($75,000)
District-paid Short-Term Disability
Paid sick days and holidays

Family coverage, long term disability, and additional life insurance options are available at the employee's expense.

Physical Demands

Frequent walking, standing, and patrolling throughout the school day
Occasional lifting, bending, or moving of equipment or barricades
Ability to respond rapidly to emergencies indoors and outdoors

We look forward to receiving your application and potentially welcoming you to the FHSD team!

Apply Now

Refine Your Search

security officer jobs in o'fallon, mo

Campus Security Officer

Security Specialist

Division Protective Services Specialist (St. Louis)

Security Officer - Armed

Security Alarm Dispatcher - Training Provided - 7:30 am- 6pm (8hr or 10hr shifts)

Security Officer

Concierge Security - Security Agent

Surveillance Security - Logistics Officer

Security Officer - Mid Shift

Security Guard (Nights)

Security Guard (Day) (Parking Lot) (East High School)

Senior Security Officer

Senior Physical Security Administrator

Security Alarm Dispatcher - Training Provided- 2:30pm-12am

Alarm Monitoring Dispatcher 5:00a-3:30p - Training Provided!

Unarmed Security Officer - Full Time

Security Officer

Alarm Monitoring Dispatcher 2:30pm - 12:00am - Training Provided!

Loss Prevention Associate

Security Lead Supervisor

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