Sr. Systems Engineer | Florida | Cleared Systems Administrator

Lockheed Martin•Orlando, FL

12d•Onsite

About The Position

Lockheed Martin's EBDT Classified IT Transformation team is modernizing the delivery of classified IT services for Business‑Area partners and DoW programs. We seek an experienced System Engineer to join the Classified IT Center of Excellence (CoE). In this fast‑paced, innovation‑driven environment, the incumbent will design, implement, and secure next‑generation IT infrastructure solutions, standardize and streamline processes across classified environments, and collaborate with cross‑functional teams to accelerate product development for U.S. Department of War missions. The role is critical to enabling Lockheed Martin to deliver higher‑quality, mission‑critical solutions more rapidly. Priority consideration will be given to qualified candidates who are currently affiliated with the Enterprise Operations’ Enterprise Business & Digital Transformation (EBDT) organization.

Requirements

Active Top Secret Clearance with the ability to to obtain and maintain a CI Polygraph.
Demonstrated experience with configuring and maintaining Microsoft Windows & Linux Client/Server operating systems.
Experience with Active Directory administration and Group Policy Object configuration.
IAT‑Level II (8570‑compliant) certification (Security+ or equivalent certification)
Proven classified infrastructure support and administration experience
Experience with DoD requirements and processes including Risk Management Framework requirements within classified environments.
Must be a US citizen for consideration.

Nice To Haves

IAT‑Level II (8570‑compliant) certification (e.g., Security+, GSEC, SCNP, SSCP, CISSP, CISA, GSE, SCNA)
3 + years administering and supporting enterprise‑class, classified IT infrastructure
Production‑level support for Microsoft Windows and Linux operating systems and enterprise networks
Installation, configuration, deployment, and maintenance of physical and virtual infrastructure (VMware NSX/vSAN/Horizon/ARIA, private/public clouds, SAN/NAS, VDI, NetApp, Dell VxRail/HCI)
Management of endpoint security with McAfee E‑Policy Orchestrator/Trellix Endpoint Security
Imaging and deployment using Microsoft Deployment Toolkit and Windows OS imaging processes
Use of engineering requirements tools (IBM Rational DOORS, Jama Connect, Polarion)
Modeling and simulation with MATLAB/Simulink, SysML/UML, and MBSE tools (IBM Rational Rhapsody, Cameo Systems Modeler, PTC Integrity)
Configuration of certificates for web servers (IIS, Apache, Nginx), load balancers, VPN gateways, and client authentication systems; Windows Server AD Certificate Services installation and hardening
Administration of Linux/Unix PKI solutions (OpenSSL, EJBCA, Dogtag, step‑ca)
Deep knowledge of Microsoft Active Directory, including AD‑Integrated device/user enrollment policies
Network traffic analysis, diagnostics, and troubleshooting expertise
Automation and scripting with Ansible, PowerShell, Bash, Python (or similar)
Familiarity with STIGs, RMF, vulnerability management, patching, and security hardening processes
Experience with ITSM/ITOM tools (e.g., Aria Operations) and DoD Cloud Computing SRG compliance
Excellent written and verbal communication, documentation, and mentoring skills
Active Top Secret (or higher) clearance required at hire; must remain eligible throughout employment
Growth mindset with willingness to learn new technologies and adapt to a fast‑changing, mission‑critical environment

Responsibilities

Perform routine updates, major upgrades, patching, and vulnerability scanning
Maintain asset inventory and ensure hardware/software lifecycle compliance
Enforce Lockheed Martin and DoD policies, including STIG and RMF requirements
Implement security hardening, remediate findings, and conduct technical security implementations
Provide timely resolution of infrastructure issues (hardware, software, networking)
Update Service Central tickets, JIRA issues, and Confluence pages with accurate status, work performed details, and any changes to scope, priority, or assignment; attach relevant artifacts and ensure traceability to requirements or incidents.
Coordinate with stakeholders (customers, engineers, and support leads) to verify resolution, close tickets or issues promptly, and communicate any follow up actions or documentation updates across all three platforms.
Design and implement innovative technical solutions to complex problems
Support classified customer demonstration environments and lab testbeds, ensuring readiness and performance for stakeholder reviews
Document system configurations, procedures, and lessons learned
Mentor junior staff and contribute to knowledge‑base growth
Participate in a 24 × 7 on‑call rotation; work off‑shift hours and weekends as needed
Work onsite full‑time with occasional travel to other Lockheed Martin facilities or customer sites