Gregorio Marrero
Bronx,NY
Summary
Accomplished Public Safety Sergeant with over a decade of progressive leadership in law enforcement, campus safety, and security operations. Recognized for building high-performing teams, strengthening organizational readiness, and leading emergency response with precision in dynamic, high-pressure environments. Demonstrated expertise in incident command, multi-agency coordination, and compliance with Federal, State, and Institutional safety standards. Skilled in leveraging technology dispatch systems, CCTV, and access control platforms to enhance situational awareness and operational efficiency. Committed to fostering a culture of accountability, continuous training, and community trust, with a proven record of advancing safety strategies that protect people, property, and reputation.
Overview
10
10
years of professional experience
Work History
Sergeant
Columbia University
03.2019 - Current
- Supervise and mentor public safety officer overseeing daily operations, assigning task, and evaluating performance for compliance with polices
- Develop and conduct comprehensive training program on emergency response protocols, access control procedures and customer service standards.
- Coordinate emergency response efforts, serving as incident commander and liaising with external agency to ensure swift resolution and accurate reporting.
- Operate and maintain computer-aided dispatch system. CCTV, alarm systems, and access control software.
Sergeant
SUNY Fashion Institute of Technology
07.2017 - 03.2019
- Managed shift operations, delegated patrol assignments, and ensured optimal coverage.
- Provided training in operational standard's procedures, de-escalation, and emergency response.
- Skilled at working independently and collaboratively in a team environment.
- Handled medical and fire emergencies initiating evacuations and containment protocols.
Acting Sergeant
SUNY Fashion Institute of Technology
08.2015 - 08.2017
- Supervised security personnel, conducted inspections and managed daily post assignments.
- Responded to incidents, provided aid, coordinated responses, and maintained detailed reports.
- Oversaw access control and visitor management
- Strengthened communication skills through regular interactions with others.
Education
Master of Science - Negotiation and Conflict Resolution
Columbia University
New York, NY08.2026
Bachelor of Science - Criminal Justice Management, Minor in Public Administration
CUNY John Jay College
New York, NY01.2020
Associate of Arts - Criminal Justice
CUNY Bronx Community College
The Bronx, NY05.2016
Skills
- Certified fire guard (FDNY)
- Red Cross First Aid and CPR certification
- IPMBA-Certified Bike Patrol professional
- Certified in FEMA ICS 100 and 200
- Emergency Preparedness Training
- Proficient in Conflict Resolution Strategies
- Access Control Systems
- Bilingual in Spanish
Timeline
Sergeant
Columbia University
03.2019 - Current
Sergeant
SUNY Fashion Institute of Technology
07.2017 - 03.2019
Acting Sergeant
SUNY Fashion Institute of Technology
08.2015 - 08.2017
Master of Science - Negotiation and Conflict Resolution
Columbia University
Bachelor of Science - Criminal Justice Management, Minor in Public Administration
CUNY John Jay College
Associate of Arts - Criminal Justice
CUNY Bronx Community College
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