Summary
Overview
Work History
Education
Skills
Education and Training
Timeline
Generic

Leobardo Sierra III

Victorville

Summary

Ambitious, career-focused job seeker, anxious to obtain an entry-level position to help launch career while achieving company goals and prospering in my position.

Overview

5
5
years of professional experience

Work History

Detention Officer

Core Civic/ICE
06.2025 - Current
  • Monitored detainee behavior to ensure compliance with facility rules and regulations.
  • Conducted regular safety checks to maintain secure environment for all individuals.
  • Managed intake and release processes, ensuring accurate documentation of detainee information.
  • Responded promptly to incidents, utilizing conflict resolution skills to de-escalate situations.

Military

US Army
12.2020 - Current
  • Performed water quality analysis and tests to ensure compliance with regulatory standards.
  • Conducted chemical feed system operations for disinfection processes.
  • Performed preventive maintenance on water treatment plant equipment.
  • Conducted 24hr security and surveillance of designated site. As well as reconnaissance missions.

Hazmat Technician

Environmental Logistics
02.2025 - 06.2025

Conducted safety compliance with all stored chemicals. Helped with unloading and loading of chemicals with customers. Readily prepared in case of emergency response to spills.

Hazmat Tech

Arrow Enviromental
01.2023 - 12.2024

Job duties of this position consisted of analyzing situations then coming up with a game plan to solve the situation at hand. As we clean up the spill we use the correct ppe in accordance with local and state regulations. Also helped fire departments shut down companies with 10+ years of chemical spills and corrosion.

Hazmat Technician

Enviromental Chemical and Consulting
11.2021 - 07.2022
  • Inspected hazardous materials sites to ensure compliance with safety regulations.
  • Conducted regular maintenance and repairs of hazmat equipment.
  • Performed emergency response duties in the event of a hazardous material incident.
  • Coordinated with other personnel to develop and implement effective plans for safe handling, storage, and disposal of hazardous materials.

Education

High School Diploma -

Mission Academy
Van Nuys, CA
12.2019

Skills

  • Defensive Driving Practices
  • Customer Satisfaction
  • Lifting Heavy Objects
  • Accurate Recordkeeping
  • Effective Communication Skills
  • Reporting
  • Safety Procedures

Education and Training

other

Timeline

Detention Officer

Core Civic/ICE
06.2025 - Current

Hazmat Technician

Environmental Logistics
02.2025 - 06.2025

Hazmat Tech

Arrow Enviromental
01.2023 - 12.2024

Hazmat Technician

Enviromental Chemical and Consulting
11.2021 - 07.2022

Military

US Army
12.2020 - Current

High School Diploma -

Mission Academy
Leobardo Sierra III