Senior Windows & Linux Systems Administrator; ‑Site, TS​/SCI

Role Overview

Senior GG System Administrator – Enterprise System Administration (Linux & Windows) with full‑cycle network engineering, automation, and Dev Ops best practices to deliver resilient, high‑performance infrastructure for mission‑critical workloads.

• Install, configure, and maintain RHEL/CentOS/Ubuntu/Debian servers and Windows Server 2016/2019/2022 instances.
• Manage users, groups, Active Directory, and local security principals.
• Provision and manage storage (partitioning, LVM, RAID, SMB/NFS shares).
• Perform system hardening, patching, and vulnerability remediation in accordance with DoD STIG/CIS baselines.
• Monitor performance, tune kernel/OS parameters, and troubleshoot services.
• Develop and maintain Ansible playbooks and roles for Linux and Windows automation.
• Write Bash, Power Shell, and Python scripts for routine tasks, incident response, and reporting.
• Operate Ansible Tower/AWX for job scheduling, credential management, and audit trails.
• Integrate Git version control workflows for infrastructure as code.
• Design, implement, and troubleshoot enterprise L2/L3 networks (VLANs, routing protocols, QoS, DHCP, DNS).
• Configure Arista EOS switches and leverage Cloud Vision for centralized provisioning; automate via eAPI/Ansible modules.
• Conduct capacity planning, high‑availability design, and performance tuning (BGP, OSPF, EVPN, VXLAN).
• Implement security controls (ACLs, RADIUS/TACACS+, 802.1X, MACsec) and ensure compliance with DoD requirements.
• Enforce DoD 8570 IAT 2 standards, apply DISA STIGs and CIS Benchmarks across hosts and network devices.
• Manage secrets, certificates, and role‑based access controls for servers and switches.
• Perform regular audits, vulnerability scans, and remediation tracking.
• Translate technical concepts into clear business value for stakeholders.
• Provide Tier 3 support and knowledge transfer to Tier 1/2 service teams.
• Document designs, runbooks, and SOPs in Confluence/SharePoint and maintain configuration libraries in Git.

• Bachelor’s degree in a related discipline or equivalent experience/combined education, over ten years of professional experience (additional five years can substitute for a degree).
• DOD 8570 certification at IAT Level 2.
• Proven capability to deliver all tasks defined in the GG Statement of Work (SOW) Appendix B for the USG standard SA labor category level X.
• U.S. security clearance and polygraph as required.

• Container Orchestration – experience with Docker Swarm, Kubernetes, or Apache Mesos.
• Container networking, service discovery, and load balancing.
• Cloud‑native technologies – familiarity with AWS, Azure, GCP, container registries, and cloud‑based logging/monitoring tools.
• Monitoring – experience with Nagios, Prometheus, or Grafana.
• Logging – experience with ELK Stack, Splunk, or Logstash.
• CI/CD – experience with Jenkins, Git Lab CI/CD, or CircleCI.
• Networking protocols and storage solutions (SAN, NAS, Ceph).
• Certifications:
  
  RHCE, RHCSA, LFCS, CKAD, CKA.

TS/SCI with Polygraph.

• Expression of Interest:
  Applying indicates interest for this or similar roles.
• Work location:
  
  On‑site full‑time at a Lockheed Martin facility.
• Work schedule:
  
  9x80 pattern; every other Friday off.
• Work schedules:
  Lockheed Martin offers alternative schedules (e.g., condensed weeks) where applicable.
• Remote work:
  Not available for this position.

Annual base salary range (excluding major metropolitan adjustments) $99,700 – $175,835, with incentive plan eligibility.

Schedule:

9x80 (eight days, 40 hours) every other Friday off.

Medical, Dental, Vision, Life Insurance, Short‑Term and Long‑Term Disability, 401(k) match, Flexible Spending Accounts, Employee Assistance Program, Education Assistance, Parental Leave, Paid Time Off, Holidays. Additional state‑specific PTO, vacation, and sick‑leave provisions apply.

Lockheed Martin is an equal‑opportunity employer. Qualified candidates will be considered without regard to legally protected characteristics.

Job posting will close in approximately 90 days. Applicants are encouraged to apply within 5 – 30 days of the requisition posting date to receive optimal consideration.