Senior Cybersecurity Engineer - DevSecOps & Threat Response

Leidos; McLean (VA); On-site; USD 131,000 - 237,000; Full time

Benefits offered by this job

401K with company match

Paid time off

Flexible schedules

Education and training support

Parental paid leave

Job summary

Leidos is seeking a Principal Cybersecurity Engineer to protect customer systems and lead security engineering across the DevSecOps lifecycle. You will collaborate with ISSEs, ISSMs, software developers, and government stakeholders to implement controls, monitor threats, and drive secure configurations.

The role emphasizes incident response support, vulnerability management, and security audits. A strong background in SIEM, endpoint protection, and cloud security is required, with an active

Qualifications

• Active TS/SCI with Polygraph is required.

Responsibilities

• Plan, implement, monitor and upgrade security controls and tools for enterprise systems.
• Design, configure and maintain security technologies (firewalls, endpoint protection) and SIEM platforms.
• Monitor security using SIEM tools to detect threats and respond to incidents.
• Support investigation and remediation of cybersecurity incidents.
• Participate in change management to maintain compliance and avoid new risks.
• Audit systems for compliance with policies and baselines.
• Collaborate with DevSecOps to integrate security into pipelines and architectures.
• Stay informed on advisories, threats and industry trends.
• Assist with secure configurations and cybersecurity compliance requirements.

Skills

Splunk SIEM

HBSS/Trellix

Carbon Black EDR

Python

PowerShell

AWS

Agile

DevSecOps

RMF

Education

BS degree with 12+ years

MS degree with 10+ years

Tools

HBSS

Trellix

Splunk

Nessus

Ansible

CloudFormation

Job description

Leidos is seeking a Principal Cybersecurity Engineer to protect customer systems and lead security engineering across the DevSecOps lifecycle. You will collaborate with ISSEs, ISSMs, software developers, and government stakeholders to implement controls, monitor threats, and drive secure configurations.

The role emphasizes incident response support, vulnerability management, and security audits. A strong background in SIEM, endpoint protection, and cloud security is required, with an active