HireCrest
External Opportunity — Not a HireCrest Client Assignment. Source: USAJOBS — official announcement on usajobs.gov. HireCrest is not the hiring agency and does not submit applications.
External · USAJOBSInformation Technology · CybersecurityHybrid$121,785–$187,093/yr

IT Cyber Security Specialist (DIRECT HIRE)

Department of Homeland Security — Transportation Security Administration · Annapolis Junction, Maryland

Summary from the source

The incumbent serves as an IT Cyber Security Specialist within the Information Technology (IT) / Operational Technology (OT) Delivery Branch, which is responsible for designing, developing, deploying, maintaining, and enhancing mission-critical hardware and software solutions aimed to provide secure and reliable interoperability between DHS's frontend/backend IT systems and the security screening systems used for conducting airport security screening operations nationwide.

Only a short excerpt is stored here; the complete announcement, requirements and application steps are on the official page.