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Email Services Systems Administrator - TS/SCI with PolygraphGeneral Dynamics Information Technology • Tampa, Florida, United States
Postuler Maintenant
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Email Services Systems Administrator - TS/SCI with Polygraph

General Dynamics Information Technology
  • US
    Tampa, Florida, United States
  • US
    Tampa, Florida, United States
Postuler Maintenant

À propos

Req ID: RQ222351
Type of Requisition: Regular
Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph
Public Trust/Other Required: None
Job Family: IT Infrastructure and Operations
Skills: Email Management, Email Services, Exchange
Experience: 6+ years of related experience
US Citizenship Required: Yes
ENDPOINT MANAGEMENT SYSTEMS ADMINISTRATOR 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.
Key Responsibilities
Administer, maintain, and troubleshoot enterprise Exchange and M365 email systems, ensuring high availability, secure operations, and reliable mail flow across multiple networks
Support email architecture components including mailbox databases, transport services, journaling, archival/retention systems, SMTP relays, and message hygiene tools
Manage identity and access for messaging services, including authentication, PKI based access, mobile access policies, and integration with directory services
Monitor system health, capacity, and performance; perform diagnostics; and implement corrective actions for service disruptions or degraded functionality
Support migrations, upgrades, and sustainment of both on premise and cloud based messaging platforms, ensuring seamless integration and minimal user impact
Execute backup, recovery, and failover operations for Exchange systems and related messaging components, validating resilience and continuity of operations
Troubleshoot complex issues involving authentication, DNS, PKI, mobile clients, cross domain routing, and dependencies across hybrid environments
Maintain documentation, SOPs, service configurations, and operational artifacts supporting sustainment, change management, and continuous improvement
Apply security patches, cumulative updates, and platform hotfixes across Exchange, M365, and messaging related infrastructure to maintain compliance and secure service baselines
Identify and remediate noncompliant messaging systems by reviewing vulnerability and SCAP reports, resolving patch exceptions, and validating corrective actions across messaging environments
What 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 Polygraph
Certifications: 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 environments
Strong proficiency with email routing, SMTP, DNS, authentication, certificates, and mobile/remote email access
Experience with secure configuration, retention/archival policies, and compliance requirements for enterprise messaging
Familiarity with patching, vulnerability remediation, and configuration compliance for messaging platforms
Ability to diagnose and resolve complex messaging, access, routing, and authentication issues across hybrid environments
Strong documentation, communication, and cross‑team collaboration skills
US citizenship required
Location: Onsite
Benefits and Compensation The likely salary range for this position is $96,569 - $130,651. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.
Our benefits package for all US‑based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post‑tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long‑term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.
Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans
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  • Tampa, Florida, United States

Compétences linguistiques

  • English
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