Systems Administrator - OMS

SAIC; Arlington (VA); On-site; USD 40,000 - 80,000; Full time

Benefits offered by this job

On-site role

Job summary

SAIC is seeking an experienced Organizational Messaging System (OMS) System Administrator to join our team at the Pentagon in Arlington, VA. The role focuses on daily operation, administration, monitoring, and maintenance of secure messaging platforms across classified and unclassified networks, with emphasis on AMHS, ECGS, SIG, ITS, and CDS.

The candidate will combine messaging gateway expertise with Windows systems administration, virtualization, and ITSM workflows within a high-tempo NOC or

Qualifications

• Bachelor’s degree in Information Technology, Computer Science, Information Assurance, Cybersecurity, or related field.
• 5+ years of systems administration experience with at least 3 years in enterprise secure messaging gateways or mission-critical ops centers.
• Active DoD TS clearance required.
• DoD 8570.01-M/DoD 8140 Certification IAW mandate prior to start; IAT II required (CCNA Security, CySA+, GICSP, GSEC, Security+ CE, SSCP). IAT III desirable.

Responsibilities

• Administer, configure, and maintain enterprise messaging platforms (AMHS, ECGS, SIG, ITS, CDS).
• Oversee high-volume global message routing, queues, validation, and delivery across joint endpoints.
• Manage MCS and CDCs to translate legacy protocols to modern formats.
• Monitor message queues to identify stalls, errors, delays, and misconfigurations.
• Maintain and secure Windows Server 2019/2022 environments.
• Identity and directory administration (AD, provisioning, RBAC).
• Coordinate hardware maintenance, storage cleanup, and KVM/console connectivity.
• Monitor health with enterprise tools like SCOM and escalate incidents in ITSM (ServiceNow).
• Document changes, SOPs, and RCA reports.

Skills

Active Directory

System Center Operations Manager

ServiceNow

KVM

Education

Bachelor’s degree in Information Technology, Computer Science, Information Assurance, Cybersecurity, or related technical field

Tools

AMHS

ECGS

SIG

ITS

CDS

Job description

Minimum Clearance Required TS.SCI

Job ID 2617428

Location

Arlington, VA, US

Date Posted

2026-09-29

Category

Information Technology

Subcategory

IT Sys Integration

Schedule

Full-Time

Shift

Day Job

Travel

Yes - 10% of the time

Minimum Clearance Required TS.SCI

Clearance Level Must Be Able to Obtain

None

Potential for Remote Work

ORA_ON_SITE

Description

Team SAIC is currently seeking a motivated and experienced Organizational Messaging System (OMS) System Administrator to join our team at the Pentagon in Arlington, VA. This role is responsible for the daily operation, administration, monitoring, and maintenance of mission-critical defense and enterprise organizational messaging platforms. This role ensures secure, high-availability message routing across classified and unclassified government networks (including SIPRNET and TIPRNET).

The successful candidate will blend specialized messaging gateway expertise with core Windows systems administration, virtualization management, enterprise monitoring, and IT Service Management (ITSM) workflows within a high-tempo Network Operations Center (NOC) or Gateway Operations environment.

Responsibilities

• Administer, configure, and maintain enterprise organizational messaging platforms, such as Automated Message Handling System (AMHS), Enhanced Communications Gateway System (ECGS), SYNDEO Intelligent Gateway (SIG), Information Transport Systems (ITS), and Cross Domain Solutions (CDS).
• Oversee high-volume, global message routing, queue processing, validation, and delivery across joint service endpoints, combatant commands, and external mission partners.
• Manage Message Conversion Systems (MCS) and Communications Data Format Converters (CDC) to translate legacy tactical messaging protocols into modern organizational formats.
• Monitor message queues to identify, isolate, and remediate message stalls, format errors, delivery delays, and routing table misconfigurations.
• Maintain and secure physical and virtual server environments running Windows Server 2019 and 2022.
• Perform core identity and directory administration, including Active Directory (AD), account provisioning, and role-based access control.
• Coordinate hardware maintenance, volume allocation, disk space cleanups, cache clearings, and KVM/console connectivity.
• Continuously monitor infrastructure and application health utilizing enterprise observability tools such as Microsoft System Center Operations Manager (SCOM).
• Serve as a Tier II / Tier III technical escalation point for messaging and server-related incidents, handling escalations from Tier I operations desks.
• Track, manage, and resolve tickets using enterprise ITSM platforms (e.g., ServiceNow).
• Coordinate incident resolution and operational failover procedures with partner agencies, circuit providers (e.g., DISA), and watch commanders/Battle Captains.
• Document system changes, standard operating procedures (SOPs), knowledge base articles, and incident root-cause analysis (RCA) reports.

Qualifications

Required Qualifications

• Education Minimum completed Bachelor’s degree in Information Technology, Computer Science, Information Assurance, Cybersecurity, or related technical field.
• Experience 5+ years of systems administration experience, with at least 3 years dedicated to enterprise secure messaging gateways, defense communications, or mission-critical operations centers.
• This position requires an active DOD Top Secret (TS) clearance.
• Possess DoD 8570.01-M/DoD 8140 Certification IAW established mandate prior to start of work - IAT Level II required (CCNA Security, CySA+, GICSP, GSEC, Security+ CE, SSCP); IAT Level III is desirable (CASP+ CE, CCNP Security, CISA, CISSP (or Associate), GCED, GCIH). Applicants not meeting this requirement will not be considered.

Target salary range $40,001 - $80,000. The estimate displayed represents the typical salary range for this position based on experience and other factors.