Info Security Sys Engineering - Cleared Contractor - L3 with Security Clearance

Must- Haves (Hard Skills) :- • Execute and support RMF lifecycle activities (categorization, control selection, implementation, assessment, authorization, and continuous monitoring) • Develop, maintain, and review RMF documentation (e.g., SSPs, SARs, POA&Ms, Security Plans) • Interpret and apply security controls from NIST SP 800-53, CNSSI 1253, and related guidance • Support implementation and validation of Security Technical Implementation Guides (STIGs) and other configuration baselines • Collaborate with cross-functional engineering teams (systems, software, hardware) to ensure security requirements are properly implemented • Interface with internal stakeholders, Authorizing Officials (AOs), and external assessors to support authorization efforts • Track and report compliance status, risks, and remediation activities to program leadership • Contribute to continuous monitoring strategies and ongoing system compliance • Travel up to 10% as needed • Must have a DoD Secret Clearance Required Qualifications (one of the following): • Bachelor's degree in cybersecurity, computer science, information systems, or related field with minimum 4 years of prior relevant experience.

Description: Job Description: As a Specialist, Information Security Systems Engineering at L3Harris Technologies, you will support the security accreditation and compliance of mission-critical communication systems. This role focuses on applying the Risk Management Framework (RMF) and related cybersecurity standards to ensure systems meet DoD and national security requirements. You will work closely with systems, software, and hardware engineers to integrate security controls, develop authorization artifacts, and support system certification and accreditation activities. This position is ideal for engineers with a strong foundation in cybersecurity governance, risk, and compliance (GRC) who are interested in contributing to high-assurance defense systems.

Essential Functions

• Execute and support RMF lifecycle activities (categorization, control selection, implementation, assessment, authorization, and continuous monitoring)
• Develop, maintain, and review RMF documentation (e.g., SSPs, SARs, POA&Ms, Security Plans)
• Interpret and apply security controls from NIST SP 800-53, CNSSI 1253, and related guidance
• Support implementation and validation of Security Technical Implementation Guides (STIGs) and other configuration baselines
• Collaborate with cross-functional engineering teams (systems, software, hardware) to ensure security requirements are properly implemented
• Interface with internal stakeholders, Authorizing Officials (AOs), and external assessors to support authorization efforts
• Track and report compliance status, risks, and remediation activities to program leadership
• Contribute to continuous monitoring strategies and ongoing system compliance
• Travel up to 10% as needed
• Must have a DoD Secret Clearance Required Qualifications (one of the following):
• Bachelor's degree in cybersecurity, computer science, information systems, or related field with minimum 4 years of prior relevant experience.
• Graduate Degree and a minimum of 2 years of prior related experience.
• In lieu of a degree, minimum of 8 years of prior related experience.

Required Certifications

• One DoD 8140 / 8570-compliant certification (e.g., Security+, CISSP, SSCP, GSEC), or ability to obtain within 6 months of hire Preferred Additional Skills: Strongly Preferred
• Exposure to cryptographic systems, FIPS 140-3, or NSA certification processes
• Experience with high-assurance or classified systems
• Hands-on experience executing RMF within DoD environments
• Familiarity with tools such as eMASS or XACTA
• Experience applying NIST SP 800-53 security controls and STIGs
• Experience supporting Authority to Operate (ATO) processes
• Strong technical writing and documentation skills Systems & Technical Context
• Understanding of networking concepts (TCP/IP, network architecture, boundary defense)
• Experience working with embedded systems or communications systems
• Familiarity with Agile or DevSecOps environments
• Experience working in cross-functional engineering teams Desirable (Nice-to-Have)
• Familiarity with TEMPEST, Anti-Tamper, or related system security disciplines
• Experience supporting government customers in a SETA/A&AS role
• Additional certifications (CISM, CISA, CEH, GIAC, etc.)
• Active TS/SCI clearance or ability to obtain Enable Skills-Based Hiring No Attachments Name Additional Details
• Minimum Education Required : Not Specified
• Security Clearance Level Required : None