Senior Specialist, Cyber Intelligence (ISSO)

L3Harris Technologies; Wilmington (MA); On-site; USD 107,000 - 198,000; Full time

Job summary

L3Harris is seeking a highly skilled ISSO to join the Cyber Intelligence Team in Wilmington, MA. The role focuses on RMF-based security architecture, control implementation, and continuous monitoring, requiring an active Top-Secret clearance with SCI eligibility.

The candidate will develop RMF documentation, mentor staff, and coordinate vulnerability assessments using ACAS/Nessus, STIGViewer, and SCAP while ensuring compliance with DAAG and JSIG.

Qualifications

• Bachelor’s Degree and minimum 6 years of related experience; graduate degree reduces experience required.
• Active DoD 8570/8140 compliant certification (Security+).
• Active Top-Secret Clearance with SCI Eligibility required.

Responsibilities

• Serve as technical lead for classified system security architecture and RMF compliance.
• Oversee end-to-end system authorization: security categorization, control implementation, validation, continuous monitoring for active ATOs.
• Develop and author RMF documentation packages (SSP, SCTM, POA&M, RAR) and mentor ISSOs and System Administrators.
• Lead vulnerability and compliance assessments using Nessus/STIG tools and coordinate remediation to reduce enterprise risk.
• Direct audit readiness and inspection efforts for DAAG and program standards; ensure security evidence meets requirements.

Skills

Active Top-Secret Clearance with SCI

Security+ certification

RMF/NIST RMF knowledge

Linux/Windows administration

DoD compliance knowledge

Education

Bachelor’s Degree (related field)

Graduate Degree

10+ years experience in lieu of degree

Tools

Nessus

STIGViewer

SCAP

ACAS/Nessus

Splunk

SIEM

Tenable

Job description

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 is the Trusted Disruptor in defense tech. 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 Specialist, Cyber Intelligence (ISSO)

Job Code: 45356

Job Location: Wilmington, MA

Job Schedule: 9/80

Job Description

L3Harris is seeking a highly skilled, experienced, and security-conscious ISSO to join our team in Wilmington, MA. The ideal candidate will have a strong background in Linux and Windows environments, with an emphasis on adhering to the Risk Management Framework (RMF). This role requires an active Top Secret clearance with SCI eligibility, and involves maintaining the integrity, confidentiality, and availability of classified information systems.

Essential Functions

• Serve as a technical lead for classified system security architecture, ensuring compliance with DCSA DAAG (formerly DAAPM), JSIG, and NIST RMF standards across multiple programs.
• Oversee end-to-end system authorization processes—including security categorization, control implementation, validation, and continuous monitoring to maintain active ATOs and alignment with enterprise cyber governance.
• Develop and author advanced RMF documentation packages (SSP, SCTM, POA&M, RAR, etc.) and provide mentorship to ISSOs and System Administrators on control inheritance, risk acceptance, and test methodologies.
• Lead vulnerability and compliance assessments leveraging Nessus, STIGViewer, SCAP, and coordinate with Engineering and Program Management to remediate findings and reduce enterprise risk.
• Direct audit readiness and inspection efforts for DCSA and ensure all security evidence and technical artifacts meet DAAG (formerly DAAPM) and program standards.
• Provide strategic security advisory support to ISSMs, FSOs, and Program Managers on architecture decisions, enclave segmentation, and classified lab operations.
• Conduct advanced incident response coordination to ensure timely containment and recovery within the approved system boundary.
• Drive the development and delivery of tailored cybersecurity awareness and privileged user training, reinforcing accountability and compliance across technical staff.
• Maintain current knowledge of evolving cybersecurity threats, regulatory changes, and defense policy updates; proactively identify and mitigate gaps before they impact program operations.
• Represent the Cyber Intelligence Team in cross-functional engineering reviews, change control boards (CCBs), and capital planning discussions as needed.

Qualifications

• Bachelor’s Degree and minimum 6 years of prior relevant experience. Graduate Degree and a minimum of 4 years of prior related experience. In lieu of a degree, minimum of 10 years of prior related experience.
• Minimum Security+ certification required in accordance with DoD 8570/8140.
• Active Top-Secret Clearance with SCI Eligibility

Preferred Additional Skills

• 10+ years of direct experience in cybersecurity, information assurance, and system accreditation in DoD environments.
• Prior experience serving as Information System Security Manager (ISSM) or lead ISSO supporting multiple classified enclaves under DCSA oversight.
• Experience with DAAG (formerly DAAPM), JSIG, and NIST RMF.
• Experience leading and executing Risk Management Framework (RMF) activities for classified systems through all lifecycle phases—from system categorization through continuous monitoring.
• Knowledge of Linux (Ubuntu, Red Hat) and Windows operating systems in mixed enclave environments, including patch automation, configuration hardening, and endpoint compliance.
• Experienced in leading vulnerability management programs using ACAS/Nessus, SCAP, and STIG compliance tools, including interpreting and tracking POA&Ms for closure.
• Experience with virtualization, containerization, and enclave segregation architectures supporting both legacy and emerging DoD systems.
• Experience with toolsets such as Splunk, Tenable (Nessus), STIGViewer, SCAP, DISA Gold Disk/Secure Host Baseline (SHB), and SIEM platforms for compliance validation and log correlation.

In compliance with pay transparency requirements, the salary range for this role in Massachusetts is $106,500 - $197,500. This is not a guarantee of compensation or salary, as final offer amount may vary based on factors including but not limited to experience and geographic location. L3Harris also offers a variety of benefits, including health and disability insurance, 401(k) match, flexible spending accounts, EAP, education assistance, parental leave, paid time off, and company-paid holidays. The specific programs and options available to an employee may vary depending on date of hire, schedule type, and the applicability of collective bargaining agreements.

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.