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Lead, Info Security Systems Engineer – TS/SCI Required
L3Harris Technologies. Define, design, implement, document, test, and sustain security solutions for National Security Systems and government customer systems .
Posted 11/9/2026full-timeColorado Springs • Colorado • United StatesSenior💰 $110,500 - $205,500 per yearWebsite
Core Competencies
Role fitCore Competencies
Use this summary to align your resume positioning with the role.
Demonstrates expertise in designing and implementing security solutions for National Security Systems, with a strong focus on compliance with CMMC Level 2/3 and NIST 800-171 requirements. Proficient in managing security architectures, vulnerability management, and applying secure design principles in cloud-native environments.
Highest-signal resume keywords
Active TS/SCI ClearanceNIST Risk Management FrameworkCMMC Level 2/3 ComplianceIdentity And Access ManagementVulnerability Management
ATS Keywords
Tailor your resumeApplicant Tracking System Keywords
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Hard Skills
Security Control ImplementationCloud SecurityInfrastructure-As-CodeApplication Security TestingSecurity Assessment PlansData Flow DiagramsSecurity Control Traceability MatricesContinuous Monitoring PlansSecurity Concepts Of OperationsRisk Acceptance
Soft Skills
Team CollaborationProblem SolvingCommunication
Tools & Technologies
AWSFortifyCoverityAnchoreGitLabTenable NESSUSSplunkSEIM/Audit Reduction Tools
Certifications & Qualifications
DoD 8140.03 IASAE Level 2Cloud Security Certification
Industry Keywords
NIST Special PublicationsCNSSI 1253JSIGFIPSDevSecOpsCI/CDSBOMZero Trust ArchitectureAI/ML Security
Tech Stack
Tools & technologiesAWSCloudSplunkTypeScript
About the role
Key responsibilities & impact- Define, design, implement, document, test, and sustain security solutions for National Security Systems and government customer systems
- Work with system developers and commercial product vendors to design and evaluate secure systems, networks, and database products
- Write System Security Plans, Security Control Traceability Matrices, Continuous Monitoring Plans, Security Assessment Plans and Procedures, Security Concepts of Operations, and Plans of Action and Milestones
- Apply CMMC Level 2/3 and NIST 800-171 requirements to system design, assessment, and continuous compliance
- Implement and assess security controls, security categorization, control overlays, baselines, and control implementation
- Design and secure multi-level on-premises and cloud-based environments
- Create data flow diagrams, interface control documents, and trade studies
- Define and manage security architectures, system boundaries, and Configuration Management Plans
- Assess and secure IaaS, PaaS, SaaS, and containerized/orchestrated platforms
- Implement cloud-native identity, access, encryption, key, and secrets management controls
- Perform application and software supply-chain security testing and generate summary reports
- Manage vulnerabilities, including triage, disposition, remediation planning, risk acceptance, and mitigation strategies
- Support secure software supply-chain integrity and secure-by-design practices
- Review and secure infrastructure-as-code and enforce automated security policies and admission controls
- Build automation and quality gates for security reviews
- Design and maintain security dashboards and stakeholder reporting
- Apply secure design principles to AI/ML-enabled and agentic capabilities
- Assess and mitigate AI-specific security risks such as prompt injection, insecure agent tool use, supply-chain integrity, and data-handling constraints
- Support a highly motivated engineering team
- Position is 100% onsite in Colorado Springs and cannot be performed remotely
Requirements
What you’ll need- Bachelor’s Degree and minimum 9 years of prior relevant experience; or Graduate Degree and minimum 7 years of prior related experience; or, in lieu of a degree, minimum 13 years of prior related experience
- Active TS/SCI clearance required
- Experience with NIST Risk Management Framework and NIST Special Publications 800-37, 800-53, 800-171
- Knowledge of CNSSI 1253, JSIG, and FIPS
- Experience applying CMMC Level 2/3 and NIST 800-171 requirements
- Experience implementing and assessing security controls
- Experience securing mixed, multi-level on-premises and cloud-based environments
- Experience with IaaS, PaaS, SaaS, and containerized/orchestrated platforms
- Experience with identity and access management, encryption, and key/secrets management in cloud-native environments such as AWS
- Experience with SAST, DAST, SCA, SBOM, DevSecOps, CI/CD, and application security STIG compliance
- Experience with tools such as Fortify, Coverity, Anchore, GitLab, Tenable NESSUS, Splunk, and SEIM/audit reduction tools
- Experience with vulnerability management and risk-based prioritization
- Experience with infrastructure-as-code and security controls as code
- Preferred: DoD 8140.03 IASAE Level 2 or cloud security certification
- Preferred: Model Based Systems Engineering using UML, SysML, or UAF
- Preferred: cATO, OSCAL, zero trust architecture, and AI/ML security experience
Benefits
Comp & perks- Health and disability insurance
- 401(k) match
- Flexible spending accounts
- EAP
- Education assistance
- Parental leave
- Paid time off
- Company-paid holidays
- 9/80 schedule with every other Friday off
- Up to 10% travel possible