Information security specialist [h1.location_city]

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

Leidos is seeking an Information System Security Engineer (ISSE) to collaborate with the Information System Security Manager (ISSM) serving as a subject matter expert in advanced technical principles theories and concepts in Security Engineering including operations engineering technical and program management support services and RMF / ATO compliance to support cyber-related operations.

Responsibilities

Duties will include :

• Under the direction and guidance of the ISSM capture and refine information security requirements and ensure their integration into information technology components and information systems through purposeful security design and configuration.
• Perform vulnerability assessments to determine weaknesses and exploit methods in systems / networks utilizing approved COTS and GOTS tools in conjunction with security testing methodologies and frameworks to assess threats against information and system / networks and recommend appropriate countermeasures for continued mission assurance.
• Perform cybersecurity analysis identification and remediation of complex cybersecurity compliance requirements on IT systems and applications to include : Microsoft Windows and RHEL family of servers workstations operating systems. RDBMS such as SQL and PostgreSQL XML and JSON-based semi-structured technologies. Web-Server and web application technologies (e.g. MS IIS Apache / Tomcat SharePoint). Virtualization technologies such as VMware and VDI infrastructures. Network infrastructure components such as switches firewalls vSANs and thin client hardware.
• Provide remediation recommendations and mitigating strategies for vulnerabilities discovered and maintain in-depth knowledge of STIG / SRGs technologies such as Tenable Nessus SCAP compliance tools like EvaluateSTIG and other automated tools that assist with the assessment of security controls and the presentation of security assessment results.
• In coordination with change management processes remediate apply and / or mitigate vulnerabilities to systems and system components through the application of security updates patches fixes and / or secure configurations.
• Support the creation development and documentation of cybersecurity processes and procedures supporting Authorization to Operate (ATO) packages and as needed to mature the programs cybersecurity posture.
• Experience with eMASS to manage ATO package
• Prepare and maintain security documentation including System Security Plans (SSPs) Security Assessment Reports and Plans of Action and Milestones (POA&Ms).
• Install configure and manage Trellix products.
• Create tune and enforce security policies through the ePO console to meet company security standards and compliance requirements.
• Troubleshoot Splunk issues between server and forwarder create custom dashboards and implement best practices.
• Administer configure and maintain the Tenable Security Center.
• Review ACAS results and remediate appropriately.

Basic Qualifications

Preferred Qualifications

Experience in the following :

Preferred Certifications

At Leidos we dont want someone who fits the moldwe want someone who melts it down and builds something better. This is a role for the restless the over-caffeinated the ones who ask whats next before the dust settles on whats now.

If youre already scheming step 20 while everyone else is still debating step 2 good. Youll fit right in.

Original Posting : January 7 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 $107900.00 - $195050.00

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.

Required Experience :

IC

Key Skills

J2se,Information Technology,Information Security,Export Import Documentation,Asp.Net MVC

Employment Type : Full-Time

Experience : years

Vacancy : 1

Monthly Salary Salary : 107900 - 195050