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Information Systems Security Officer 1 with Security Clearance

ClearanceJobs
San Antonio, TX Full Time
POSTED ON 12/19/2025
AVAILABLE BEFORE 1/18/2026
L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers' mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3Harris Technologies is the Trusted Disruptor in the defense industry. With customers' mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security. Job Title: Sr Spec, Network Plan Engrg Job Code: 30386 Job Location: USA-TX-San Antonio Job Schedule: 5-40 M-F Job Description: L3Harris is currently searching for a Specialist, Network Planning Engineering for our San Antonio, TX site. The Senior Network Specialist Engineer requires an active Top Secret Clearance with SCI eligibility. They will have a strong background in Information Assurance, Virtualization, and Database Management on Government networks; will monitor security of the network using ACAS and other tools to produce reports for Senior Leaders on the overall security level of the network. The specialist will be required to collaborate planning, security and engineering with the Network Engineers, Windows System Administrators, LINUX Administrators and Trellix Admins. The IA specialist must be familiar with standard concepts, practices, and procedures of managing servers and virtual environments and have the ability to perform tasks under minimal supervision. A certain degree of creativity and latitude is required. Will fall directly under Operation Center Manager, but also take direction from the two Operation Center Site Leads. Essential Functions: * Provide Network Support services for a Department of Defense (DoD) Senior Leader Network, exercising discretion and independent judgement when events or incidents occur to ensure corrective actions are captured and incidents resolved in an expedient manner

  • Ensure the development, documentation, and presentation of IS security education, awareness, and training activities for users and others, as appropriate
  • Manage multiple high visibility security projects and adjust to quick shifts in customer priorities while meeting all mission requirements
  • Have a familiarity with controlling, labeling, virus scanning, and appropriately transferring data (uploading/downloading) between information systems at varying classification levels
  • Perform and Independently interpret the findings of vulnerability scanning utilities such as:
  • ACAS (Tenable Nessus)
  • SCAP (STIG benchmark)
  • Collaborate with other engineers to:
  • Ensure security policies and settings are in place
  • Build standardized security documentation
  • Generate evidence of compliance once settings have been applied
  • Analyze software
  • Interpret security requirements
  • Plan effective control implementations
  • Ability to function and navigate within eMASS
  • Contribute to development and ongoing improvement of industry best practices and standards within IA. * Develop, maintain, and facilitate the appropriate closure of POA&Ms and facilitate with the Agency-designated security Point of Contact (PoC)/ISSO any related remediation activities Perform vulnerability/risk assessment analyses to support Assessment & Authorization (A&A) activities
  • Address network and connectivity issues instantaneously to support DoD Senior Leaders.
  • Answer government cybersecurity and compliance requirement questions
  • Assist in creating and processing ATOs across multiple government customers
  • Provide high-level Department of Defense reports to DoD Senior Leaders
  • Manage and coordinate RF equipment Authorized Service Interruptions (ASIs)
  • Update troubleshooting Guide from lessons learned.
  • Provide Tier I/II engineering support to subscriber aircraft on live missions and serve as a point of entry for any RF field support and/or corrective maintenance actions
  • Provide first level and when possible second level support for terrestrial network connectivity support during high-level DoD missions
  • Monitor the system to ensure efficient utilization and allocation of network and computer resources and facilities to maintain satisfactory response to customers using the network.
  • Monitor, maintain and troubleshoot COMSEC/TRANSEC equipment and keying material issues

Required Qualifications: * Bachelor's Degree and minimum 3-5 years of prior relevant experience or a Graduate Degree and a minimum of 1-2 years of prior related experience. In lieu of a degree, minimum of 5-8 years of prior related experience.

  • Experience accrediting IT systems against U.S. Government standards including:
  • NIST SP 800-53, CNSSI 1253
  • DISA STIGs
  • DOD RMF, ICD 503, or DIACAP
  • Active DOD 8140 (e.g. CISSP or Security )
  • Must have a Top Secret clearance with eligibility to SCI

L3Harris Technologies is proud to be an Equal Opportunity Employer. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. L3Harris maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law. Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information. By submitting your resume for this position, you understand and agree that L3Harris Technologies may share your resume, as well as any other related personal information or documentation you provide, with its subsidiaries and affiliated companies for the purpose of considering you for other available positions. L3Harris Technologies is an E-Verify Employer. Please click here for the E-Verify Poster in English or Spanish. For information regarding your Right To Work, please click here for English or Spanish.

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$87,826 to $104,785
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