Senior Systems Engineer - Information Security (DoD, 9/80)

L3Harris Technologies; South Carolina; On-site; USD 120,000 - 180,000; Full time

Job summary

L3Harris Technologies in Greenville, TX seeks a Senior Specialist, Systems Engineer - Information Security to lead risk assessments, deliver security requirements, and coordinate program-level security actions. The role emphasizes collaboration across software and hardware teams to secure missions and certifications.

The candidate will drive security metrics, manage DOORS/JIRA requirements, and ensure A&A activities while performing on-site work in a defense-focused environment.

Qualifications

• Bachelor's degree in engineering or related field with at least 6 years of relevant experience.
• Graduate degree with a minimum of 4 years of directly related experience.
• In lieu of a degree, at least 10 years of related professional experience.
• Experience in the design, development, and deployment of Systems Security Engineering solutions.
• Experience translating NIST 800-53 security controls into actionable requirements for product teams.
• Experience drafting Systems Security Engineering requirements and communicating across teams.
• Experience with the Risk Management Framework, including NIST and DoD standards.
• Experience preparing security documentation for certifications.
• Active DoD Secret clearance with the ability to obtain a Top Secret clearance.
• Preferred skills include proposal development, networking knowledge, Linux administration, Bash scripting, Python, Windows PowerShell, Windows administration, Nessus, Wireshark, Nmap, and Elastic Stack.
• Preferred experience also includes Linux audit/logging architecture, Active Directory/LDAP, NIST publications, app hardening with code-scanning tools such as Coverity or Fortify, eMass or Xacta, and DoD deployment logistics.

Responsibilities

• Participate in risk and vulnerability assessments of information systems to identify weaknesses, threats, and protection requirements.
• Coordinate the development of Security Impact Assessments for proposed system changes.
• Combine software and hardware engineering knowledge to support secure system delivery.
• Prepare and present technical findings in internal and external program meetings.
• Develop, monitor, and report technical metrics.
• Manage requirements in DOORS or JIRA throughout the project lifecycle.
• Communicate across and outside the organization to help leadership adopt new practices and approaches.
• Track A&A status for assigned systems and oversee accreditation and re-accreditation actions.
• Improve existing processes or establish new ones where needed.
• Work cross-functionally to ensure security requirements are addressed throughout the mission system development lifecycle.
• Perform security compliance scans, vulnerability analysis, and drive remediation of identified issues.
• Conduct periodic network vulnerability scans and recommend remediation options while ensuring compliance with corporate security policies and best practices.
• Develop and maintain ATO Body of Evidence artifacts.
• Work fully on-site, as this role cannot be performed remotely.

Skills

Security engineering

Risk management

Cross-functional collaboration

Compliance awareness

System security architecture

Education

Bachelor's degree in engineering or related field

Graduate degree with 4+ years of related experience

10+ years of related experience in lieu of degree

Tools

DOORS

JIRA

Nessus

Wireshark

Nmap

Elastic Stack

Coverity

Fortify

eMass

Xacta

Active Directory

LDAP

Job description

L3Harris Technologies in Greenville, TX seeks a Senior Specialist, Systems Engineer - Information Security to lead risk assessments, deliver security requirements, and coordinate program-level security actions. The role emphasizes collaboration across software and hardware teams to secure missions and certifications.

The candidate will drive security metrics, manage DOORS/JIRA requirements, and ensure A&A activities while performing on-site work in a defense-focused environment.