Systems Administrator - Organizational Messaging Systems; OMS
Listed on 2026-08-28
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IT/Tech
Cybersecurity, Systems Administrator, IT Support, Network Security
SHR Consulting Group, LLC is a small business delivering enterprise IT, cybersecurity, and program management services to the Department of Defense and federal civilian agencies. We support mission-critical infrastructure at the Pentagon and across the National Capital Region, and we invest in our people through competitive compensation, professional certification support, and long-term career growth on stable, multi-year programs.
About SHR Consulting GroupSHR Consulting Group, LLC is a small business delivering enterprise IT, cybersecurity, and program management services to the Department of Defense and federal civilian agencies. We support mission-critical infrastructure at the Pentagon and across the National Capital Region, and we invest in our people through competitive compensation, professional certification support, and long-term career growth on stable, multi-year programs.
Position SummarySHR Consulting Group is seeking Systems Administrators to operate and maintain the DoD Organizational Messaging enterprise — the systems that allow organizations to exchange classified and unclassified record message traffic across DoD, U.S. Government agencies, Five Eyes partners, NATO, and U.S. installations and embassies worldwide. You will administer large-scale, geographically clustered, active-active messaging platforms including the Telos Automated Message Handling System (AMHS), the Northrop Grumman Enhanced Communication Gateway System (ECGS), the Message Conversion System and Central Directory Component, the Information Transport Service, the Syndeo Intelligent Gateway, and the Radiant Mercury Cross Domain Solution.
Positions are aligned to specific system suites.
- Perform application suite operation and administration of large-scale, active-active, geographically clustered messaging systems to ensure message access, search, and management capabilities
- Administer profile libraries, message folders, and bulletin board folders, including creation and maintenance of custom profiles supporting advanced message filtering, Discretionary Access Control, and Limited Distribution Control
- Monitor local and remote distributed applications, host operating systems, and network connections to ensure messages are being processed; identify, analyze, and resolve system configuration problems
- Correct intercepted messages, send and respond to operational service wires, and manually associate sectional messages in accordance with message precedence processing requirements, including Flash (Z) within 10 minutes and Immediate (O) within 30 minutes in-station processing
- Administer ECGS/Mailroom profile libraries and message center folders and perform manual failover between single-site ECGS application cluster nodes to the alternate site
- Troubleshoot configured serial circuit communication ports, message routing database tables, Plain Language Address (PLA) database tables, and application-specific configuration tables, including use of protocol analyzers and oscilloscopes
- Provision and test new point-to-point, NGC-P/NGC-R, and dial-in Secure Terminal Equipment (STE) connections; perform cryptographic Key Management Center updates to STE Crypto Ignition Keys
- Provide system administration for MCS and CDC Linux operating system components, network connections, and serial-network communication appliances, and ensure directory synchronization to Oracle-based CDC servers
- Provide on-site system administration for the classified ITS node in accordance with NSA Program Manager processes, escalating complex issues to NSA Tier III staff
- Configure ITS to utilize EVCP, CMX, and other TCP protocols for DOI-103, DOI-103s, and ACP-128 formatted messages, and provide CAC and soft certificate authentication support including JAR signing and TLS 1.2 or higher message transport encryption
- Provide operational and system administration support to the Syndeo Intelligent Gateway application and server suite, establishing profile routing and validating protocol conversions
- Administer the Radiant Mercury Cross Domain Solution in accordance with DISA OMS PMO guidance, monitoring cross-domain message traffic and the SFTP…
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