Cyber Defense Engineer, Cross-Domain Security

Leidos LLC; Chambersburg (Franklin County); On-site; USD 108,000 - 195,000; Full time

Benefits offered by this job

Health and Wellness programs

Income Protection

Paid Leave

Retirement

Job summary

Leidos LLC is seeking a cybersecurity professional to support the DISA DECO Task Order CDES program. You will work with customers to refine defense postures, implement threat detection rules, and develop analytics aligned with MITRE ATT&CK and RTB standards.

The role requires DoD security clearances up to TS, strong communication, and ability to adapt in a high-visibility environment. This on-site position is based in the United States.

Qualifications

• Active DoD Secret clearance (up to TS) at start date.
• Bachelor's degree in a related discipline with 4+ years’ experience or equivalent.
• Knowledge of Cyber Network Defense (CND) within a Computer Incident Response organization.

Responsibilities

• Establish baseline security data per NSA RTB standards.
• Maintain and onboard customer configurations and track infrastructure changes.
• Coordinate with monitoring centers to validate data access and CDES indices via SIEM.
• Collaborate to develop analytics and countermeasures using threat intelligence.
• Track RTB compliance with DISA and mission partners.
• Stay current with RTB standards; identify changes for DISA CSSP compliance.
• Work with teams to create data health dashboards.

Skills

Cybersecurity basics

MITRE ATT&CK

Threat detection

Analytics development

Education

Bachelor's degree in a related discipline

Tools

SIEM

PowerShell

Python

Azure Defender

SharePoint

Job description

Leidos LLC is seeking a cybersecurity professional to support the DISA DECO Task Order CDES program. You will work with customers to refine defense postures, implement threat detection rules, and develop analytics aligned with MITRE ATT&CK and RTB standards.

The role requires DoD security clearances up to TS, strong communication, and ability to adapt in a high-visibility environment. This on-site position is based in the United States.