Sr. Systems Engineer- Secret- Onsite Orlando, FLE3

Requisition ID: 8062ERP Eligible?: NoERP amount: N/ARelocation: PossibleType: ExemptShift: 1Clearance Prior to Start: SecretFinal Clearance: Top Secret with Investigation or CV date within 5 yearsPay Transparency: $85,300.00 - $158,300.00Experience Level: Experienced ProfessionalFT/PT/Casual: FullTimeDepartment: Enterprise Business ServicesBusiness Unit: Enterprise Business ServicesStandard Job DescriptionLockheed 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).This is a hands-on position focused on resolving complex technical challenges across applications, systems, and network connectivity within a classified environment. You will be part of a high-performing team responsible for maintaining and defending enterprise IT systems that operate in complex, security-constrained environments.The selected candidate will administer and support Linux and/or Windows systems, network components, and storage platforms. Responsibilities include system installation, configuration, maintenance, and troubleshooting to ensure continuous availability of mission systems. You will ensure the logical and systematic conversion of customer or product requirements into total systems solutions that acknowledge technical, schedule, and cost constraints. Analyses are performed across the full system lifecycle to include: concept, design, fabrication, test, installation, operation, maintenance, and disposal.Working alongside engineers, cybersecurity professionals, and program stakeholders, you will lead system integration, upgrades, and sustainment activities. You will apply systems analysis techniques and procedures, including consulting with users to determine hardware, software, or system functional specifications. You will support cost and risk, supportability, and effectiveness analyses while helping resolve incidents, execute changes, and improve operational processes that directly impact mission success. 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.Collaborate with cross‑functional teams to accelerate product development for U.S. Department of War missions.Ensure compliance with all relevant security policies and industry best practices.The role is critical to enabling Lockheed Martin to deliver higher‑quality, mission‑critical solutions more rapidly.Job Description | ResponsibilitiesPerform routine updates, major upgrades, patching, and vulnerability scanningMaintain asset inventory and ensure hardware/software lifecycle complianceEnforce Lockheed Martin and DoD policies, including STIG and RMF requirementsImplement security hardening, remediate findings, and conduct technical security implementationsProvide 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 problemsSupport classified customer demonstration environments and lab testbeds, ensuring readiness and performance for stakeholder reviewsDocument system configurations, procedures, and lessons learnedMentor junior staff and contribute to knowledge‑base growthParticipate in a 24  7 on‑call rotation; work off‑shift hours and weekends as neededWork onsite full‑time with occasional travel to other Lockheed Martin facilities or customer sitesBasic Qualifications3+ years of demonstrated work experience with system administration in one or more areas: Linux, Windows, networking, and/or storage devicesExperience performing technical planning, system integration, or systems analysis in an IT environmentExperience troubleshooting and resolving complex technical issues across multiple system domainsKnowledge of system maintenance activities such as patching, updates, and configuration managementUnderstanding of networking concepts (IP, DNS, routing, etc.)Experience supporting users and translating customer requirements into technical solutionsAbility to follow and improve established processes for incident, change, and problem managementExperience with DoD requirements and processes including Risk Management Framework requirements within classified environments.Strong communication skills and ability to work effectively in a team environmentDesired SkillsIAT‑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 Growth mindset with willingness to learn new technologies and adapt to a fast‑changing, mission‑critical environmentAbility to obtain and maintain Secret / Top Secret (or higher) security clearance; must remain eligible throughout employment , U.S. citizen, candidates must also be eligible to undergo a Counter Intelligence (CI) polygraph.Pay InformationFull-Time Salary Range: $85300.00 - $158300.00At Lockheed Martin, we know mission success starts with taking care of our people. Our Total Rewards program is designed to attract top talent, support your well-being, and help you grow—both professionally and personally.The salary range for this position is as listed on the requisition. Please note that the salary information listed is a general guideline only. Lockheed Martin considers factors such as (but not limited to) scope and responsibilities of the position, candidate's work experience, education/ training, key skills as well as market(work location) and business considerations when extending an offer. Benefits offered: Medical, Dental, Vision, Flexible work arrangements and schedules (e.g., 4x10), 401(k) match, Paid time off, Holidays, Parental Leave, EAP, Flexible Spending Accounts, Education Assistance, Life Insurance, Short-Term Disability, and Long-Term Disability.Annual short-term and/or long-term incentive compensation programs may be offered depending on the position. Payments under these annual programs are not guaranteed and can vary from year to year and are tied to a range of performance metrics.For (Washington state applicants only) Non-represented full-time employees: accrue at least 10 hours per month of Paid Time Off (PTO) to be used for incidental absences and other reasons; receive at least 90 hours for holidays. Represented full time employees accrue 6.67 hours of Vacation per month; accrue up to 52 hours of sick leave annually; receive at least 96 hours for holidays. PTO, Vacation, sick leave, and holiday hours are prorated based on start date during the calendar year.