Job Summary
This effort is seeking an experienced Sr. Endpoint Security Systems Engineer to join our Cyber Security Engineering team. The focus of this team member will be to design, deploy, maintain, and upgrade endpoint security capabilities, with opportunities for cross training on our other security tools. Working in a hybrid cloud/on-prem mission environment the engineer will support integration of Linux and Windows hosted mission systems with the endpoint security product and maintaining the scan policies to ensure proper protection of mission systems from external threats.
Primary Responsibilities:
Maintaining and upgrading the central management consoles (currently Trellix - ePolicy Orchestrator) on multiple isolated networks
Managing the integration of mission application servers (Linux and Windows) with the management console
Deploying malware protection software (currently Trellix Endpoint Threat Protection) updates and improved scan exclusion policies to mission application servers
Responding promptly to mission teams to successfully troubleshoot issues with integration (including cases where excessive real time malware scans are believed to be impeding mission performance)
Determine methods to automate and improve the performance of the endpoint security suite within a hybrid cloud/on-prem environment
Integrate endpoint security scan processes for integrated reporting via external tools (such as Splunk or AppDynamics)
Investigate findings of malware detected on mission application servers
Basic Qualifications:
Experience with tools such as Trellix ePolicy Orchestrator and Trellix Endpoint Threat Protection
Experience with maintaining systems on Linux and Windows platforms
Ability to partner with mission application teams to jointly troubleshoot issues with endpoint security integration
Experience with incident detection, incident response and forensics activities
Strong attention to detail with analytical mind and outstanding problem-solving skills
Bachelor’s degree with 8 or more years relevant experience. Additional years of experience may be substituted in lieu of a degree.
To be considered must have an active TS/SCI with polygraph security clearance
Preferred Qualifications
Experience with Cisco Secure Endpoint (formerly AMP for Endpoints) or other endpoint security tools
Experience with Cloud Computing Technologies/Amazon Web Services (AWS)
Experience integrating endpoint security tool findings with external products such as Splunk or AppDynamics
Experience with managing endpoint security across on-prem and cloud environment boundaries
Experience with additional cyber security tools and processes such as Splunk, Rapid7, SolarWinds, Cisco IDS/IPS, VPN, WebInspect, AppDetective
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Original Posting:August 25, 2026
For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
Pay Range $107,900.00 - $195,050.00
The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.
