Mario Castaneda
Norwalk
Summary
Dedicated and dependable professional with over 6 years of experience in customer service, public safety, administrative support, and team leadership. Proven ability to communicate effectively with diverse individuals, manage multiple responsibilities in fast-paced environments, and provide exceptional service to customers, students, staff, and visitors. Experienced in training and mentoring employees, handling documentation and reports, maintaining accurate records, and resolving issues with professionalism and attention to detail. Strong organizational, problem-solving, and interpersonal skills, with proficiency in Microsoft Office, Google Workspace, and data entry. Committed to creating positive experiences, supporting team success, and contributing to organizational goals.
Overview
7
7
years of professional experience
1
1
Certification
Work History
Field Training Officer (FTO)
University of California Police Department
05.2024 - 05.2026
- Supported the development of professional and safe operational practices
- Trained and mentored over 10+ newly hired Community Service Officers on patrol procedures, radio communications, report writing, and campus safety protocols.
- Assisted trainees in handling real-world incidents, including welfare checks, suspicious activity calls, building security checks, and public assistance requests.
- Maintained ongoing communication with trainees after certification to support continued professional development and success within the program.
- Evaluated trainee performance and provided constructive feedback to improve operational readiness and confidence in the field.
- Served as a role model for professionalism, customer service, and emergency response while ensuring adherence to department policies.
Community Service Officer (CSO)
University of California Police Department
10.2023 - 05.2024
- Completed incident documentation and responded to safety concerns in fast-paced environments
- Assisted with campus safety operations and emergency response situations across campus
- Coordinated with dispatchers, police officers, and emergency personnel during incidents requiring immediate response.
- Conducted building security checks, property patrols, safety escorts, and lock/unlock services while maintaining a visible public safety presence.
- Prepared detailed incident reports and documented suspicious activity, hazards, and public safety concerns.
- Responded to hundreds of public safety and customer service calls across a campus community of over 40,000 students, staff, and visitors.
- Assisted community members by providing directions, resources, conflict resolution, and safety information
Security Officer
Professional Security Consultants
05.2022 - 08.2023
- Implemented effective crowd control measures during special events or emergencies.
- Utilized strong communication skills to interact with staff, guests, vendors and law enforcement personnel in a professional manner.
- Responded to alarms, disturbances, and customer concerns while maintaining a safe environment for guests and employees.
- Investigated incidents and completed accurate reports used by management and law enforcement personnel.
- Performed routine checks of fire alarms, door locks, lighting systems and surveillance equipment for proper functioning.
- Monitored CCTV systems and performed routine inspections of security, fire, and life-safety equipment.
- Prepared detailed reports of security incidents and investigations.
- Maintained professional interactions with customers, tenants, contractors, and law enforcement agencies.
Student Cafeteria Worker
Norwalk-La Mirada Unified School District
08.2019 - 05.2022
- Worked in customer service-focused environments assisting students and staff
- Handled payments, prepared food items, and supported daily cafeteria operations
- Maintained organization and efficiency during high-volume service periods
- Assisted in inventory management, including tracking food supplies and minimizing waste effectively.
- Managed cash register transactions accurately, ensuring proper handling of payments and receipts.
Education
Associates of Arts - Accounting
Cerritos College
Cerritos, CA12-2027
Bachelor of Arts - Data Science
University of California, Berkeley
Berkeley, CA05-2026
High school Diploma -
Norwalk High School
Norwalk, CA05-2022
Skills
- Security Skills: De-escalation Techniques, Emergency Response, Patrol Operations, Radio Communications, Customer Service, Conflict Resolution, Incident Report Writing
- Technical Skills: Data Entry, Microsoft Office, Google Workspace
- Coding Skills: Python, Java, HTML, CSS
- Coaching and mentoring
- Report writing
- File maintenance
- Data processing
- Records management
- Document scanning
- Attention to detail
- Customer service
Certification
Guard Card Certification | Bureau of Security and Investigative Services May 2022 - May 2027
Languages
English
Native or Bilingual
Spanish
Limited Working
Interests
Technology, Public Safety, Data Analysis, Fitness, Gaming
LEADERSHIP EXPERIENCE
- Training & Development Leadership Experience
- Mentored and trained new Community Service Officers through hands-on field instruction and coaching.
- Assisted in developing trainee confidence, communication skills, and decision-making abilities in high-pressure situations.
- Demonstrated leadership by coordinating with supervisors, dispatchers, and fellow CSOs during daily operations and special events.
- Recognized as a trusted resource for new employees seeking guidance on policies, procedures, and customer service expectations.
Timeline
Field Training Officer (FTO)
University of California Police Department
05.2024 - 05.2026
Community Service Officer (CSO)
University of California Police Department
10.2023 - 05.2024
Security Officer
Professional Security Consultants
05.2022 - 08.2023
Student Cafeteria Worker
Norwalk-La Mirada Unified School District
08.2019 - 05.2022
Associates of Arts - Accounting
Cerritos College
Bachelor of Arts - Data Science
University of California, Berkeley
High school Diploma -
Norwalk High School