Senior Cyber Security Engineer

Join a team committed to a mission!

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 sustainable. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business.

Are you ready for your next career challenge?

The Defense Sector, Decision Advantage Business Area at Leidos is thrilled to offer a unique opportunity for a Senior Cyber Security Engineer to join our team. If you have a passion for cyber and engineering and a desire to support critical Air Force systems, this is the perfect role for you. We are hiring an ISSE to work on our team and provide cybersecurity expertise on Air Force cyber policies, requirements and controls. As the prime contractor, Leidos will drive performance optimization in achieving mission outcomes through efficient design, build, fielding and transition-to-operations.

Primary Responsibilities:

You will provide ISSE support to the program and a secure communications and data transfer network that consists of a series of unclassified networks that are being designed, built, and installed. You will also be responsible for providing cyber expertise for updates and tech refreshes during the development phase that require engineering and security architecture design, integration and install, test, and deploy to operations. You will be ensuring cybersecurity is applied to our secure communications operational data transfer between various sites with security adequate to protect information; designing, installing, administering, and maintaining secure communications capabilities between existing sites; and, providing Operations and Maintenance (O&M) documentation and training. This position 85% remote but will require travel to the customer site on Warner Robins Air Force Base in Warner Robin GA. Ideal candidate will be local to the Warner Robins area.

Basic Qualifications:

• Bachelor's degree in IT, Computer Science, Engineering, or other technical discipline and 10 or more years of prior relevant experience.
• Any one of the following DoD Manual 8140.03 certifications: Security+, CASP, CISSP
• Design and implement technical security controls, identify and remediate vulnerabilities, and advice to Information System Security Managers (ISSMs), and Program Managers.
• Provide cybersecurity expertise and knowledge to implement the System Security Plan.
• Create the Security Assessment Report.
• Create Plan of Action and Milestones
• Implement Plans of Actions and Milestones
• Ensure required vulnerability scans meet the standards required to obtain and maintain an ATO from the Authorizing Official.
• A strong working knowledge of RMF.
• Experience in applying security principles to all states of system development from requirements development through operational acceptance.
• Experience in conducting information systems security assessments, evaluating IA and Cybersecurity controls, and conducting and supporting RMF activities.
• Experience with Operational Air Force or Space Force systems.
• Experience with ACAS, Xacta and / or eMASS.
• Experience and/or certifications associated with RMF, ICD 503, NIST SP800-53
• Experience in current authorization practices, particularly within the DoD
• Experience in accreditation of Windows, Linux, Cisco, SQL or Oracle databases, virtualized systems, Red Hat Enterprise License (RHEL) Linux 7, ACAS, Tenable systems.

Preferred Quals:

• Knowledge of ATOs and required security controls for DoD networks
• Previous experience working with cyber teams to gain ATOs
• Experience with AF Special programs
• Experience with DoD systems

DABAOPP1

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.

Original Posting:
May 4, 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:
Pay Range $107,900.00 - $195,050.00

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.