Justin Brennan
Sr. Manager, Information Security at Seismic
- Role
- Senior Manager, Information Security at Seismic
- Location
- San Diego, CA, US
- LinkedIn followers
- 500 followers
About Justin Brennan
Experienced Information Security leader in cloud enterprise environments. I started my career as an IT Administrator in the Navy Submarine Force, where I learned the value of discipline, precision, and resilience—skills I carry into every aspect of cybersecurity.I focus on building strong, scalable security programs that reduce risk and support business growth. I’m passionate about proactive defense, clear communication, and fostering a culture where security is everyone’s responsibility. Always learning, always improving—and always open to connecting with others in the field.
Experience
Senior Manager, Information Security
Feb 2026 — Present · San Diego, CA, US
Education
San Diego State University
Bachelor of Business Administration - BBA, Management Information Systems
San Diego Miramar College
Associate of Science - AS, Business Administration
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