Adan Castillo
San Diego
Summary
Detail-oriented Individual with a focus in surveillance techniques and technology support. Proven ability to assess risks and respond effectively to incidents, ensuring a safe and smooth working environment. Capable of adapting to any role as need be.
Overview
9
9
years of professional experience
1
1
Certification
Work History
Campus Security Assistant
San Diego Unified School District
07.2025 - Current
- Monitored campus surroundings, contributing to student safety and security.
- Conducted regular patrols of school grounds and buildings for suspicious activity.
- Assisted in enforcing school policies and regulations, promoting a safe environment for students.
- Assisted during incidents and emergencies, delivering timely assistance.
- Facilitated navigation for faculty, staff, students, and visitors, enhancing overall safety on school grounds.
- Provided guidance to students on safe behavior and conflict resolution techniques.
- Examined windows, doors, and gates to ensure security.
Indp. Technical Support & Hardware Deployment
N/A
San Diego, CA
07.2017 - Current
- Custom System Architecture: Successfully sourced components, assembled, and configured three custom PC builds, optimizing hardware compatibility for specific budget and performance metrics.
- OS Deployment & Provisioning: Executed clean installations of Windows 10/11 operating systems, managed disk partitioning, configured BIOS/UEFI settings, and updated essential system drivers.
- Hardware Lifecycle Support: Diagnosed, repaired, and upgraded physical components including CPUs, storage drives (SSD/NVMe), RAM modules, and power supplies to extend device longevity.
- End-User Desktop Support: Acted as a primary point of contact for family and peers to resolve varied technical challenges, including network connectivity issues, peripheral device setups, and software malfunctions.
- Technical Translation: Communicated technical troubleshooting steps clearly to non-technical individuals, ensuring a calm, patient, and successful support experience.
Sales Associate
Harbor Freight Tools USA
Chula Vista, California
12.2022 - 07.2023
- Guided customers in selecting tools and equipment tailored to project needs, enhancing their purchasing experience.
- Informed customers about promotions and product features, contributing to an improved shopping experience.
- Upsold additional items based on customer interests and needs.
- Processed sales transactions accurately using the point-of-sale system.
- Performed cashier duties such as accepting payments, issuing receipts and counting money back change.
- Answered incoming telephone calls to provide store, products and services information.
- Organized and maintained product displays to promote a clean, inviting store environment, facilitating customer access to products.
- Collaborated with team members to restock shelves and manage inventory levels.
- Received and displayed product shipments on store retail shelves upon delivery.
Staffer
Royalty Hospitality Staffing
San Diego, California
04.2022 - 11.2022
- Provided exceptional customer service, creating memorable guest experiences.
- Resolved guest inquiries and concerns promptly to maintain service quality.
- Maintained client communication to address needs and enhance satisfaction.
- Assisted team during high-demand events, facilitating seamless operations.
- Managed inventory of supplies and equipment for event readiness.
- Managed multiple tasks simultaneously while meeting deadlines consistently.
- Reported incidents and irregularities to management for further action.
Associate
7-eleven
Chula Vista, California
06.2021 - 11.2021
- Provided excellent customer service in a fast-paced retail environment.
- Resolved customer inquiries and complaints promptly, enhancing overall customer satisfaction.
- Provided customer service support for inquiries, complaints, and returns.
- Handled incoming calls from customers regarding orders or other inquiries.
- Operated cash register, handling transactions efficiently and accurately.
- Assisted with inventory management and stock replenishment to maintain product availability.
- Collaborated with team members to ensure smooth daily operations.
- Managed multiple tasks simultaneously, ensuring operational efficiency and detail-oriented execution.
Education
Associate of Science - CIS - Web And Gaming Animation
Southwestern College
Chula Vista, CA12-2023
Skills
- Surveillance techniques
- Security monitoring
- Access control
- Emergency response
- Incident response
- Risk assessment
- IT security protocols
- Information protection
- Technical troubleshooting
- Software installation
- System maintenance
- Data entry
- Customer relationship management
- Client assistance
- Service delivery
- Product knowledge
Certification
IT Support Certificate - Google IT Support program, Coursera, 2024
Languages
Spanish
Native/ Bilingual
English
Native/ Bilingual
Timeline
Campus Security Assistant
San Diego Unified School District
07.2025 - Current
Sales Associate
Harbor Freight Tools USA
12.2022 - 07.2023
Staffer
Royalty Hospitality Staffing
04.2022 - 11.2022
Associate
7-eleven
06.2021 - 11.2021
Indp. Technical Support & Hardware Deployment
N/A
07.2017 - Current
Associate of Science - CIS - Web And Gaming Animation
Southwestern College
Education and Training
other