Job Purpose:The Senior Information Technology Systems Engineer manages day-to-day systems, security, and user-support operations within a secure Department of Defense environment. This role leads technical-support activities involving ticket resolution, endpoint troubleshooting, system patching, vulnerability remediation, incident response, and compliance with Department of Defense cybersecurity requirements. The position serves as a senior escalation point for complex systems and security issues.
Responsibilities:- Lead daily systems-administration, cybersecurity, and technical-support activities.
- Serve as an escalation point for complex hardware, software, endpoint, and application issues.
- Administer Windows, macOS, and Linux systems and servers.
- Provide technical support to end users and resolve assigned service tickets.
- Install, configure, patch, upgrade, and troubleshoot operating systems and applications.
- Implement and maintain Department of Defense Security Technical Implementation Guides.
- Review and remediate Information Assurance Vulnerability Alerts.
- Perform vulnerability scanning and compliance validation using Assured Compliance Assessment Solution and Security Content Automation Protocol tools.
- Support cybersecurity incident-response activities and escalate security concerns when appropriate.
- Troubleshoot endpoint communication, application, authentication, and access issues.
- Implement and maintain Windows Administrative Templates and Group Policy configurations.
- Support Active Directory, user accounts, system permissions, and related administrative functions.
- Perform system backups, recovery planning, restoration, and continuity-support activities.
- Administer Department of Defense Common Access Card Public Key Infrastructure tools, including ActivClient, Centrify, and CAC Key.
- Maintain patch schedules and ensure systems remain current with approved security updates.
- Track technical incidents, vulnerabilities, corrective actions, and resolution status.
- Maintain system records, user-account databases, host inventories, and security documentation.
- Develop and update technical procedures, troubleshooting guides, and standard operating procedures.
- Coordinate with cybersecurity personnel, system owners, and technical teams to resolve issues.
- Support continuous improvement through analysis of service-ticket trends, recurring problems, and security findings.
Education and Experience: - Degree in Cybersecurity, Information Systems, Information Technology, Computer Science, Computer Engineering, or a related field.
- Equivalent professional experience may be considered.
- Minimum of 10 years of experience administering Windows, macOS, and Linux environments.
- Demonstrated experience providing help-desk, systems-administration, or security-operations support.
- Experience implementing Department of Defense Security Technical Implementation Guides and Information Assurance Vulnerability Alerts.
- Experience with Assured Compliance Assessment Solution and Security Content Automation Protocol scanning.
- Experience supporting cybersecurity incident-response and vulnerability-remediation activities.
- Experience troubleshooting endpoints, applications, user accounts, and network communications.
- Knowledge of Windows Administrative Templates and Group Policy.
- Experience with Department of Defense Common Access Card Public Key Infrastructure tools.
- Familiarity with Naval Research Laboratory Security Technical Implementation Guide requirements.
- Strong technical troubleshooting, documentation, customer-service, and communication skills.
- Security+, Information Technology Infrastructure Library, or comparable certifications are strongly valued but not required.
- Must be able to obtain and maintain a SECRET security clearance.
