Senior Network and Computer Systems Administrator

Position is not funded and is contingent upon contract award.

Work Location: Arlington, VA / National Capital Region

Schedule: Full Time 40 hours per week; 8 hours per day (remote work is not authorized)

IronMountain Solutions, Inc. is seeking a Senior Network and Computer Systems Administrator to support DHS CISA’s CI-ISE and HSIN-CI platform environments.

You will be responsible for supporting systems architecture, and cloud infrastructure integration.

• Architect, design, and manage complex systems and network infrastructures for the CI-ISE and HSIN collaboration platforms.
• Lead cloud infrastructure provisioning, hybrid environment management, and platform integration to ensure high system availability and uptime.
• Ensure all infrastructure components strictly adhere to federal security and compliance frameworks, including FedRAMP, NIST guidelines, and DHS 4300A policies.
• Lead cross-platform integration efforts, ensuring secure data flow between HSIN-CI, HSIN-Cyber, and HSIN-ES environments.
• Perform ongoing infrastructure performance optimization, monitoring network health, and resolving high-priority system incidents within stringent PWS timelines (e.g., within 24 hours).
• Collaborate with software developers and web administrators to deploy technical upgrades and maintain data accuracy, structure, and accessibility.