Principal Cyber Engineer

Looking for an opportunity to make an impact?

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers’ success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. The Leidos National Security Sector (NSS) combines technology-enabled services and mission software capabilities in the areas of cyber, logistics, security operations, and decision analytics to support our defense and intel customers’ mission to defend against evolving threats around the world.

Your greatest work is ahead!

The Multi-domain Solutions Division (MDS) within the Leidos National Security Sector is seeking a skilled Principal Cyber Engineer to join a new cyber security program and play a key role in supporting government-critical systems. You will be part of a program that oversees development, integration, delivery, and operations and maintenance of IT managed security services, which encompasses support to monitor the cybersecurity threat and security posture situational awareness for the enterprise. This opportunity is in anticipation of a future contract award!

What you’ll be doing:

• Lead the design, implementation, and optimization of enterprise-wide security solutions. 
• As a senior technical expert, play a key role in developing advanced security architectures, mitigating cyber threats, and ensuring compliance with industry security standards. 
• Work closely with cross-functional teams to embed security into system designs, drive innovation, and lead security initiatives across cloud, on-prem, and hybrid environments.
• Architect, develop, and implement advanced cybersecurity solutions to protect enterprise networks, applications, and data. 
• Lead the evaluation and integration of emerging security technologies to enhance threat detection, response, and risk management. 
• Perform in-depth security assessments, including penetration testing, vulnerability management, and incident response. 
• Define and enforce security policies, frameworks, and best practices aligned with NIST, CIS, ISO 27001, MITRE ATT&CK, and other industry standards. 
• Design and implement security controls across cloud (AWS, Azure, GCP), on-prem, and hybrid environments. 
• Collaborate with DevOps and software engineering teams to integrate security into SDLC and CI/CD pipelines. 
• Develop Zero Trust architectures and strategies to enhance enterprise security posture. 
• Serve as a subject matter expert (SME) for threat intelligence, cyber defense operations, and security engineering. 
• Provide mentorship and technical leadership to security engineers, analysts, and IT teams. 
• Lead incident response efforts, forensic investigations, and root cause analysis of security breaches. 
• Stay ahead of emerging cyber threats, attack techniques, and mitigation strategies to enhance proactive security defenses.

What does Leidos need from me?

• Active Top Secret/SCI (TS/SCI) with Polygraph security clearance required. Must be U.S. Citizen.
• Bachelor's degree and 8 to 12 years of prior relevant experience or Masters with 6 to 10 years of prior relevant experience. May possess a Doctorate in technical domain. Experience may be considered in lieu of degree.

Favorable if you have:

• CompTIA Network+.
• CISSP or other IAT III.

Original Posting:

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:

The Leidos pay range for this job level is a general guideline only and 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.