Systems Engineer with Security Clearance

Leidos, Inc. Job Title
Systems Engineer / Site Reliability Engineer Duration
2 Years Contract (Recompete - end of 2028) Job Description
Leidos is seeking a Site Reliability Engineer to support the NMCI Service Management Integration and Transport (SMIT) program. This role focuses on the reliability, performance, and scalability of complex distributed systems supporting the Navy-Marine Corps Intranet (NMCI). The SMIT team is responsible for cybersecurity services, network operations, network engineering, service desk support, seat services, and data transport infrastructure.

Key responsibilities include: • Collaborate with development and operations teams to ensure reliable and efficient software deployments. • Monitor systems and continuously improve platform reliability and performance. • Coordinate and execute production releases during scheduled maintenance windows, including off-hours activities when required. • Administer Windows Server environments, including patch distribution, compliance monitoring, and reporting using Microsoft Endpoint Configuration Manager (MECM/SCCM). • Coordinate firmware updates, disk qualification packages, and system upgrades across NetApp ONTAP storage environments utilizing Active IQ Unified Manager and OnCommand Insight (OCI). • Plan and execute non-disruptive software maintenance releases, SMUs, and image upgrades across Cisco NX-OS data center switches. • Support infrastructure and application environments while maintaining compliance with defense and cybersecurity requirements.

Key Metrics of Success • Maintain adherence to a seven-day vulnerability-to-production patching cadence for assigned enterprise infrastructure assets. • Ensure comprehensive and regularly updated automated test coverage for critical systems and infrastructure components.

Required Skills
Security & Compliance • Active DoD Secret clearance. • DoD 8570 IAT Level II certification. • Operating System/Application Certification, including one of the following: ◦ Microsoft Technology Associate (MTA) ◦ Microsoft Certified Solutions Associate (MCSA) ◦ Microsoft Certified Technology Specialist (MCTS) • Experience supporting classified environments and SIPRNet access. • Working knowledge of: ◦ Risk Management Framework (RMF) ◦ DISA STIGs ◦ ITSM and Change Management processes Systems Administration • 4+ years of systems administration and patch management experience. • Strong Linux/Unix administration experience. • Experience administering Windows Server environments. • Active Directory administration experience. • VMware experience.

Automation & Scripting • Strong scripting experience using: ◦ Python ◦ PowerShell ◦ Bash • Experience automating patch deployment, system health checks, and reporting. Infrastructure Technologies • Hands-on experience with: ◦ MECM/SCCM ◦ NetApp ONTAP ◦ Cisco NX-OS • Experience supporting enterprise storage, server, and network infrastructure. Cloud & DevSecOps • Experience with cloud technologies, including AWS. • Experience working in Agile and DevSecOps environments. • Application administration experience. • Experience using Atlassian tools such as Jira and Confluence.

Core Competencies • Strong collaboration and communication skills. • Ability to support scheduled off-hours maintenance activities. • Experience operating in highly regulated enterprise environments. Workplace Type
On-Site Interview Information
Over the phone Business Challenge
This position supports a critical engineering team responsible for maintaining the reliability, security, performance, and operational readiness of enterprise infrastructure supporting the Navy-Marine Corps Intranet environment.

Additional Qualifications • Previous experience supporting the NGEN-NMCI program. • ITIL v4, Scrum Master, Agile SAFe certifications, or equivalent experience. • Experience developing automation solutions using PowerShell or Ansible Playbooks for patch deployment, system health monitoring, and reporting. • Vendor-specific certifications such as: ◦ Microsoft Certified: Windows Server Hybrid Administrator • Prior experience supporting defense-focused enterprise networks with strict SLA and compliance requirements.

Work Environment • Location: On-site in one of the following locations: ◦ San Diego, CA ◦ Norfolk, VA ◦ Honolulu, HI ◦ Jacksonville, FL • Program: Supports the NMCI Service Management Integration and Transport (SMIT) program. • Schedule: Full-time position with participation in designated maintenance windows, including occasional off-hours support. • Environment: Fast-paced enterprise infrastructure environment requiring close collaboration among engineering, operations, cybersecurity, and application support teams.