Endpoint Management Systems AdministratorYour impact: Own your opportunity to support national defense. Your work will help keep critical operations secure and connected across the global enterprise-directly, contributing to a mission that protects our nation every day. CIO Infrastructure Services (CIS) is growing, and we invite both our experienced incumbents and new team members to be part of what's next.
Incumbents bring invaluable mission insight, while new talent adds fresh ideas and energy. Together, we'll strengthen continuity and drive the next generation of innovation.Meaningful work and personal impact: As an email services systems administrator supporting CIS, you will operate, secure, and optimize enterprise email and messaging services across complex multinetwork environments. You will maintain high availability email platforms, ensure reliable communication services, and sustain cloud enabled collaboration capabilities that directly support mission critical operations.
Your work enhances the resilience, performance, and readiness of enterprise messaging systems relied on by users worldwide.Key responsibilities:Administer, maintain, and troubleshoot enterprise Exchange and M365 email systems, ensuring high availability, secure operations, and reliable mail flow across multiple networksSupport email architecture components including mailbox databases, transport services, journaling, archival/retention systems, SMTP relays, and message hygiene toolsManage identity and access for messaging services, including authentication, PKI based access, mobile access policies, and integration with directory servicesMonitor system health, capacity, and performance; perform diagnostics; and implement corrective actions for service disruptions or degraded functionalitySupport migrations, upgrades, and sustainment of both on premise and cloud based messaging platforms, ensuring seamless integration and minimal user impactExecute backup, recovery, and failover operations for Exchange systems and related messaging components, validating resilience and continuity of operationsTroubleshoot complex issues involving authentication, DNS, PKI, mobile clients, cross domain routing, and dependencies across hybrid environmentsMaintain documentation, SOPs, service configurations, and operational artifacts supporting sustainment, change management, and continuous improvementApply security patches, cumulative updates, and platform hotfixes across Exchange, M365, and messaging related infrastructure to maintain compliance and secure service baselinesIdentify and remediate noncompliant messaging systems by reviewing vulnerability and SCAP reports, resolving patch exceptions, and validating corrective actions across messaging environmentsWhat you'll need to succeed:Experience requirements: Email services systems administrator senior - requires a bachelor's degree in an IT-related field or 8+ years of relevant IT experience in lieu of a degree. Email services systems administrator principal - requires a bachelor's degree in an IT-related field or 10+ years of relevant IT experience in lieu of a degree. Email services systems administrator sr.
principal - requires a bachelor's degree in an IT-related field or 12+ years of relevant IT experience in lieu of a degree.Clearance: Active TS/SCI clearance with a favorable polygraphCertifications: Meet DoD 8140 information assurance workforce certification requirements (e.g., Security+ CE)Hands-on experience administering Exchange (on-premises) and M365 messaging services in enterprise or multi-network environmentsStrong proficiency with email routing, SMTP, DNS, authentication, certificates, and mobile/remote email accessExperience with secure configuration, retention/archival policies, and compliance requirements for enterprise messagingFamiliarity with patching, vulnerability remediation, and configuration compliance for messaging platformsAbility to diagnose and resolve complex messaging, access, routing, and authentication issues across hybrid environmentsStrong documentation, communication, and cross team collaboration skillsUS citizenship requiredLocation: Onsite