Liam Callahan
Summary
A valuable team member who can bring visions into reality. Delivers on promises and maintains vigilance while ensuring the mission. Wanting to work with other team members who are just as passionate about security, while bettering the industry and ourselves.
Overview
4
4
years of professional experience
5
5
Certifications
Work History
Cleared Security Officer/Front Desk Officer
Securitas Critical Infrastructure Services (SCIS)
04.2025 - Current
- Operated as the front desk officer and issued badges to visitors and clients while ensuring they possessed correct credentials.
- Patrolled the site's interior ensuring coverage over the building while surveying for potential issues or hazards.
- Performed random routine bag inspections ensuring that it adhered to the site's policies.
- Completed daily activity reports and documented incident reports.
- Ensured compliance with the NISPOM
Alarm Responder/Unarmed Security Officer/Senior Officer
Securitas
03.2024 - 04.2025
- Patrolled a data center's interior and exterior, performing routine checks and responding to incidents.
- Provided customer service by assisting visitors, clients, and employees, ensuring compliance with safety protocols.
- Operated in a SOC while managing access control and monitored surveillance systems, logging events and incidents into security databases.
- Completed daily shift reports and maintained accurate documentation of activities.
Lead Developer and CEO
Steeljaw Studios LLC
06.2022 - 06.2024
- Created projects in Unity and Unreal using all aspects of game development.
- Led a team of developers across multiple disciplines to ensure timely project completion and client satisfaction.
- Handled inbound client requests, managed workflow pipelines, and delivered custom commission-based solutions.
- Utilized Jira and ClickUp to organize sprints, track progress, and ensure effective communication between team members.
Associate: Electronics/Photolab Department
Walmart
06.2023 - 03.2024
- Delivered exceptional customer service by assisting customers with electronic devices and media queries.
- Maintained and operated multiple photography printers while handling cash transactions and managing the department counter.
- Demonstrated problem-solving skills by fulfilling customer projects and tasks independently, often without additional support.
Teacher
Future Kings
09.2022 - 01.2023
- Provided classroom instruction to underprivileged middle school students, teaching game design and Unity basics.
- Created lesson plans, collaborated with teaching staff, and mentored students on overcoming challenges in the design process.
Teaching Assistant Intern
Mason Game & Technology Academy
07.2022 - 07.2022
- Assisted students with various software including Unity, Unreal Engine, and Photoshop, helping them with project development.
- Prepared classrooms for sessions and worked closely with instructors to troubleshoot issues during lessons.
Skills
- Access control
- Surveillance monitoring
- Incident reporting
- Customer service
- Policy enforcement
- Risk assessment
- Conflict resolution
- Attention to detail
- Adaptability
- Detail-oriented
- Documentation management
- CCTV surveillance
- Alarm monitoring
- Team collaboration
Certification
Bachelors of Fine Arts in Computer Game Design from George Mason University
Proficiencies
- SIMS, Gallagar, Sourcetree, Github, MS Office Suite, Unity, Unreal Engine, Jira, clickup, C#, 3ds Max, Blender
Timeline
Cleared Security Officer/Front Desk Officer
Securitas Critical Infrastructure Services (SCIS)
04.2025 - Current
Alarm Responder/Unarmed Security Officer/Senior Officer
Securitas
03.2024 - 04.2025
Associate: Electronics/Photolab Department
Walmart
06.2023 - 03.2024
Teacher
Future Kings
09.2022 - 01.2023
Teaching Assistant Intern
Mason Game & Technology Academy
07.2022 - 07.2022
Lead Developer and CEO
Steeljaw Studios LLC
06.2022 - 06.2024