Info Security Sys Engineering - Cleared Contractor - L5

Enter Job Description...
L3Harris is seeking a clear, organized, and technically strong engineer to help develop the written security and engineering artifacts that support mission-critical communication systems. This role is centered on technical writing, system documentation, and cross-functional engineering communication for secure and classified environments.

The ideal candidate has a current Secret DoD clearance, an engineering or technical degree, and the ability to translate complex system, cybersecurity, and cryptographic concepts into high-quality documentation for internal teams, leadership, and government stakeholders. While experience with cybersecurity frameworks such as RMF is helpful, we are open to candidates whose strengths are in technical writing, structured analysis, systems thinking, and secure engineering environments.

This position is a strong fit for engineers with backgrounds in cryptography, computer science, electrical engineering, systems engineering, or related technical disciplines who enjoy producing precise documentation and working across software, hardware, and systems teams.

Essential Functions

Lead development of technical documentation supporting secure communications and information assurance efforts
Write, edit, and maintain high-quality engineering, cybersecurity, and compliance artifacts for classified or mission-critical systems
Translate complex technical concepts from systems, software, hardware, and security teams into clear, accurate, and actionable documentation
Partner with cross-functional engineering teams to capture system designs, security requirements, implementation details, and test evidence
Support development of security authorization and compliance documentation, including RMF-related artifacts where applicable
Organize and present technical material for internal reviews, customer deliverables, and government stakeholders
Review documentation for clarity, consistency, technical accuracy, and alignment to program requirements
Help teams communicate security posture, system risks, and mitigation approaches in a concise and defensible manner
Contribute to documentation strategies that improve program readiness, auditability, and maintainability
Travel up to 10% as needed
Required Qualifications

Bachelor s degree in computer science, electrical engineering, systems engineering, cryptography, cybersecurity, or another related technical field with a minimum of 9 years of prior relevant experience
Or a graduate degree in a related field with a minimum of 7 years of prior relevant experience
Or in lieu of a degree, a minimum of 13 years of relevant technical experience
Active DoD Secret Clearance
Strong technical writing, editing, and documentation skills
Ability to work effectively with engineers and subject matter experts across multiple disciplines
Ability to understand and communicate complex technical material in a structured and audience-appropriate way
Preferred Qualifications

Experience writing documentation for secure, classified, or regulated systems
Background in cryptography, secure communications, information security, or related technical areas
Familiarity with RMF, NIST standards, STIGs, or security compliance processes
Direct experience working through the certification process for NSA cryptographic modules (IASRD/SERD) and/or the assessment of Anti-tamper solutions with the ATEA.
Experience supporting engineering reviews, design documentation, verification artifacts, or customer-facing technical deliverables
Experience working with embedded systems, communications systems, or defense technologies
Familiarity with tools such as eMASS, XACTA, or other documentation/compliance tracking environments
Experience in DoD, IC, or other national security environments
Preferred Additional Skills

Strong attention to detail, organization, and document quality
Ability to synthesize inputs from multiple stakeholders into cohesive technical products
Comfortable working in a fast-paced engineering environment with evolving requirements
Familiarity with Agile, DevSecOps, or multidisciplinary development programs
DoD 8140 / 8570 certification, or ability to obtain within 6 months of hire
Active TS/SCI clearance or ability to obtain
Enable Skills-Based Hiring No

Comments:
L3Harris has a 9/80 schedule. 9 hours a day M-TH each week, 8 hours every other Friday. If candidates exceed salary range, contact Hiring manager regardless given the limited nature of these types of candidates. We will see if an alternative requisition could be issued for the right candidate to meet salary demands.