Darien Doonan
Milwaukee
Summary
Results-driven Security Supervisor with 10+ experience overseeing security operations, GSOC monitoring, incident management, access control systems, CCTV surveillance, and emergency response coordination. Proven ability to lead teams, investigate incidents, develop security procedures, and serve as a central communication hub during critical events. Skilled in threat assessment, crisis response, report writing, and collaborating with law enforcement, management, and security personnel to protect people, property, and business operations. Recognized for strong leadership, attention to detail, and the ability to remain calm and effective in high-pressure situations.
Overview
9
9
years of professional experience
1
1
Certification
Work History
GSOC Specialist
Confidential
Milwaukee, WI
01.2024 - Current
- Monitor security systems such as CCTV, access control systems, alarms, GPS tracking and emergency notification platforms.
- Watch for suspicious activity, unauthorized access, safety hazards and operational disruptions.
- Monitor global events that may impact company operations, employees or facilities.
- Receive and evaluate security alarms and emergency calls.
- Dispatch security personnel, law enforcement, EMS or fire services when needed.
- Coordinate responses to incidents such as workplace violence, medical emergencies, facility breaches, theft and vandalism.
Asset Protection Associate
Walmart
Waukesha, WI
09.2022 - 06.2023
- Conducted CCTV surveillance and floor patrols to identify and deter theft attempts.
- Completed detailed daily theft and incident reports, supporting corporate shrink-reduction efforts.
- Partnered with store leadership on shortage trends, helping to drive more profitable sales.
- Engaged with customers in a professional, welcoming manner while ensuring security presence.
Armed Guard
Arms Security Corporation
Milwaukee, WI
02.2022 - 02.2023
- Maintained a secure environment for patrons and employees through armed presence and quick incident response.
- Monitored access control points and enforced security post orders.
- Collaborated with law enforcement and client leadership when responding to security incidents.
Security Supervisor
Securitas
Milwaukee, WI
08.2018 - 09.2022
- Supervised a team of 5–10 security officers, including scheduling, training, and performance evaluations.
- Conducted internal and external investigations of theft, misconduct, and safety violations.
- Created and executed emergency preparedness and crisis response plans for client facilities.
- Partnered with managers to identify shortage risks and recommend preventative strategies.
- Prepared comprehensive incident and daily activity reports, ensuring compliance with security best practices.
Security Officer
PER MAR Security
Milwaukee, WI
03.2017 - 08.2018
- Controlled facility access by verifying credentials of employees, visitors, and contractors.
- Patrolled premises to prevent theft and ensure safety compliance.
- Documented all incidents, escalating findings to supervisors for resolution.
Education
High School Diploma -
Barack Obama School of Career & Technical Education
Milwaukee, WISkills
- Physical Security & Surveillance (CCTV, Access Control)
- Loss Prevention & Asset Protection
- Incident Reporting & Investigations
- Risk Assessment & Threat Detection
- Emergency Response & Crisis Management
- Security Team Supervision & Training
- Policy Enforcement & Compliance
- Customer & Visitor Safety
- Armed Security & Firearms Certified
- Communication & Documentation
Certification
- Class D Security License
- Firearms License (Armed Guard Certified)
- Guard Card
- First Aid & CPR Certified
- Valid Driver’s License
Timeline
GSOC Specialist
Confidential
01.2024 - Current
Asset Protection Associate
Walmart
09.2022 - 06.2023
Armed Guard
Arms Security Corporation
02.2022 - 02.2023
Security Supervisor
Securitas
08.2018 - 09.2022
Security Officer
PER MAR Security
03.2017 - 08.2018
High School Diploma -
Barack Obama School of Career & Technical Education