Mark Sullivan
ISSE @ Odyssey Systems | Veteran | TS/SCI Clearance | Security+ | CySA+ | Pentest+ | CASP+ | Veteran Mentor | Associate Director of Student Chapters @ ISSA New England
- Role
- Information System Security Engineer (Isse) at Odyssey
- Location
- Marblehead, MA, US
- LinkedIn followers
- 500 followers
About Mark Sullivan
I mostly just get on here to give back. When people get a chance to meet me, I’m always the idea-fairy. I love to brainstorm, which is why I spend so much time giving back to jobseekers and especially the veteran community.I’m currently an Information Systems Security Engineer at Odyssey Systems supporting the Department of Defense and CloudOne at Hanscom AFB, Massachusetts.My career is supported by certifications in CompTIA Security+, CompTIA Cybersecurity Analyst CySA+, CompTIA Pentest+, CompTIA Advanced Security Practitioner (CASP+), a Bachelors of Cybersecurity and Information Assurance, with a Top Secret Clearance.I recently transitioned from the military where I spent eight years in the logistics field. I have a strong understanding of problem-solving, team work, strategic thinking and delivering results in a timely and cost-effective manner. I always find a way to make things happen. If you got this far: I love meeting new people, feel free to send me a message and connect!
Experience
Information System Security Engineer (Isse)
Jan 2026 — Present · Hanscom Air Force Base, MA, US
Maintain the operational security posture of systems and monitor environments for compliance with security policies.• Manage system changes, coordinate hardware/software/firmware modifications with the ISSM and AO/DAO, and assess their security impact.• Support the ISSM and assume ISSM responsibilities when necessary or in their absence.• Ensure systems are operated, maintained, and disposed of according to approved security policies and authorization packages.• Monitor system recovery processes, audit logs, and conduct periodic reviews to ensure security controls remain effective.• Develop, update, and maintain System Security Plans (SSPs) and other security documentation.• Participate in Change Control Board (CCB) activities and collaborate with development and infrastructure teams on security-related risks and approvals.
Education
Western Governors University
Bachelor of Science - BS, Cybersecurity and Information Assurance
Southern New Hampshire University
Associate of Arts - AA, Liberal Arts
2021 — 2023
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