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Senior Associate, Information Systems Security Officer (ISSO)

L3Harris

Company : L3Harris

Location : Plano, TX, 75086

Posted Date : 15 September 2025

Job Details

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: Senior Associate, Cyber Intelligence (ISSO)

Job Code: 25471

Job Location: Plano, TX or Richardson, TX

Job Schedule: 9/80

Job Description:

The Information System Security Officer (ISSO) is part of an Information Security team supporting a wide variety of existing and developing computer network and communications systems and projects. The ISSO is responsible for the development and implementation of security controls required IAW Information System (IS) categorization and overlay application.

Essential Functions:

  • Maintain Cybersecurity SharePoint and email groups for customer compliance and deliverables.

  • Provide cybersecurity customer service to internal & external customers.

  • Assist in testing and validating internal solutions within Dev Environment.

  • Contribute to the development, coordination and presentation of compliance training with the Sr. ISSO/ISSM.

  • Draft, review, and edit internally created documentation.

  • Generate various reports for leadership.

  • Partner in creation of various artifacts supporting artifacts and safeguards to meet various regulatory requirements based upon NISPOM/DAAPM, RMF, JSIG, and NIST 800 series (800-53, 800-171 etc.) guidelines.

  • Assists leadership with working groups that establish/review/upgrade policies and procedures, solutions, and automation.

  • Participates in security reviews, self/customer inspections, audit security controls, identify gaps in security architecture, and develop corrective or mitigating actions.

  • Review audit data of the IS and IS components (technical & physical) for anomalous or unauthorized activities.

  • Stakeholder in Configuration change management processes (including hardware/software changes, account management, media control procedures, disposition, Assured File Transfers (AFT) and related documentation) in accordance with policies and procedures.

  • Performs ISSM duties in their absence.

  • Ability to obtain and maintain Top Secret clearance and any additional clearances as required.

  • Up to 15% travel may be required.

  • Performs other duties as required and assigned by senior leadership.

Qualifications:

  • Active DoD Secret clearance with current 6-year update with ability to obtain Top Secret.

  • Bachelor's Degree and a minimum of 2 years of prior related experience. Graduate Degree or equivalent with 0 to 2 years of prior related experience. In lieu of a degree, minimum of 6 years of prior related experience.

  • Must obtain 8140 Certification (CISSP, CISM etc.) within six (6) months of hire.

Preferred Additional Skills:

  • Bachelor's/Master's degree in STEM or a related field and/or equivalent experience desired.

  • Proficiency with Microsoft Office products.

  • Experience in Special Access Programs (SAPs) and/or Collateral environments.

  • Experience with SPLUNK, Security Center, Trellix Suite (DLP etc.), DISA STIGs, eMASS, Group Policy, and other software/systems.

  • Existing 8140 Certification (Security+, CISSP, CISM etc.).

  • Demonstrate basic organizational, decision-making, and problem-solving skills.

  • Well versed in risk management, mitigation, and customer service.

  • Excellent written and verbal presentation skills.

#LI-FS1

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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