Senior Software Developer, Systems Software

Position is not funded and is contingent upon contract award.

501727 Job Title : Senior Software Developer, Systems Software

Work Location: Arlington, VA / National Capital Region

Schedule: Full Time 40 hours per week; 8 hours per day

IronMountain Solutions, Inc. is seeking a Senior Software Developer, Systems Software to support the Department of Homeland Security (DHS) Cybersecurity and Infrastructure Security Agency (CISA).

This role will serve as a technical lead for the operations, maintenance, and enhancement of the Critical Infrastructure Information Sharing Environment (CI-ISE) and Homeland Security Information Network (HSIN-CI) platforms.

• Lead the technical architecture, module development, and configuration of Drupal-based web platforms supporting critical infrastructure information sharing.
• Design, implement, and maintain secure platform architectures within Sensitive But Unclassified (SBU) and For Official Use Only (FOUO) environments.
• Build and maintain seamless API integrations and content management frameworks across CISA/HSIN platforms.
• Optimize platform performance and scalability to ensure high availability for rapid operational and emergent event requirements.
• Enforce strict content governance and site hygiene by developing technical solutions to identify and remediate stale or duplicative content.
• Ensure all platform updates, interfaces, and deliverables achieve 100% compliance with Section 508 accessibility standards.
• Support Continuous Integration/Continuous Delivery (CI/CD) pipelines to deploy secure and tested code updates to the production environment.