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L3Harris Technologies · 6 hours ago

Sr. Specialist Cyber Infrastructure Engineer

Carlsbad, CA

Full-time

Onsite

Senior Level, Lead/Staff

$104K/yr - $194K/yr

10+ years exp

L3Harris Technologies is dedicated to recruiting and developing high-performing talent in the defense industry. They are seeking a highly skilled Cyber Infrastructure Engineer to design, implement, and secure infrastructure aligned with DoD compliance standards while enabling mission-critical operations.

CommercialInformation TechnologyNational Security

No H1B

Security Clearance Required

U.S. Citizen Only

Responsibilities

Engineer and oversee administration of Linux (Ubuntu/Red Hat) and Windows Server enterprise environments, ensuring mission-critical uptime and compliance in classified domains

Architect, configure, and direct operations of Cisco and Juniper networking equipment within classified/air-gapped networks, ensuring strict adherence to 32 CFR Part 117 (NISPOM), DAAPM, JSIG, NIST standards, and CCRI readiness

Lead the design, deployment, and optimization of VMware ESXi infrastructures, including migrations from bare metal to virtualized environments

Manage and safeguard NetApp storage solutions, ensuring data integrity, continuity of operations, and secure handling of classified data

Implement and govern enterprise Splunk platforms for centralized logging, monitoring, and compliance reporting, aligning outputs with DCSA and DoD audit requirements

Oversee audit and incident response by reviewing electronic and manual logs, investigating anomalies, and directing remediation of identified security incidents

Conduct and validate enterprise vulnerability management through Nessus scanning, application of DISA STIGs, and enforcement of FIPS-validated cryptography

Direct enterprise endpoint management leveraging Ivanti for patch automation, compliance enforcement, and lifecycle sustainment of systems

Lead NIST RMF activities by authoring and reviewing accreditation documentation, validating technical controls, and in preparation for DCSA audits

Provide Tier III support for escalated issues and lead troubleshooting efforts

Collaborate with senior security leadership (ISSM, FSO, Program Managers) to ensure continuous system compliance and readiness for government assessment

Qualification

Linux (Ubuntu/Red Hat)Windows ServerCisco networkingVMware ESXiCybersecurity engineeringRisk Management FrameworkSplunkNIST complianceStakeholder engagementIndependent operationCommunication skillsMentoringTeam collaborationProblem-solvingDocumentation skills

Required

Bachelor's degree in Computer Science, Information Systems, Cybersecurity, or related discipline; advanced degree or equivalent senior-level experience strongly preferred

Active Secret clearance required; ability to obtain and maintain a Top Secret / SCI clearance post-hire

Preferred

Minimum of 10 years of progressive IT and security experience, with a proven record in systems administration, cybersecurity engineering, and secure infrastructure management

Extensive expertise in applying the Risk Management Framework (RMF), NIST SP 800-53 controls, and compliance with DCSA/DAAPM and related DoD standards

Deep technical proficiency with Linux (Ubuntu/Red Hat) and Windows Server operating systems, including hardening, patching, and performance optimization in classified environments

Proven leadership in architecting, deploying, and securing enterprise network infrastructures, with strong understanding of Cisco, Juniper, and cross-domain networking protocols

Expert-level knowledge of virtualization (VMware ESXi, Hyper-V) and containerization technologies, including secure deployment within mission-critical systems

Experience with virtualization technologies and containerization

Familiarity with the Risk Management Framework and its application in securing IT systems

Superior communication, documentation, and stakeholder engagement skills, with the ability to brief senior leadership, government assessors, and cross-functional teams

Proven ability to operate independently while mentoring and collaborating across technical and security teams to achieve enterprise-wide objectives

Advanced proficiency with enterprise security and compliance tools including ACAS (Nessus), STIGViewer, SCAP, and Splunk, with the ability to analyze outputs and drive remediation

Extensive background as a Linux System Administrator in secure, classified environments, with expertise in hardening, automation, and lifecycle sustainment

Comprehensive knowledge of federal and defense cybersecurity requirements, including NISPOM, DAAPM, JSIG, ICDs, and associated compliance frameworks

Industry-recognized certifications such as CISSP, RHCSE, or equivalent senior-level credentials