Cybersecurity Specialist

Leidos

Cybersecurity Specialist participating in security incident handling, vulnerability remediation, and adherence to compliance standards at Leidos. Collaborating on SSPS and managing documentation for IT security.

Posted 6/2/2026full-timeRemote • 🇺🇸 United StatesSeniorLead💰 $107,900 - $195,050 per yearWebsite

Tech Stack

Tools & technologies

FirewallsSplunk

About the role

Key responsibilities & impact

Participate in security incident handling and response; and participate in the mitigation and remediation of security vulnerabilities affecting host workstations and servers.
Monitor security audit and intrusion detection system logs for system and network anomalies, investigate and/or escalate security violations, and document and report events.
Interpret vulnerability scans of networked devices and assist system owners in vulnerability mitigation.
Assist System Administrators (SA) and System Owners (SO) in the development of System Security Plans (SSP) based on the National Institute of Standards and Technology (NIST) Security Publications.
Conduct Authorization and Accreditation (A&A) activities to allow systems to obtain and maintain Authorization to Operate (ATO).
Advise System Administrators (SA) and System Owners (SO) with accreditation activities, including risk assessments, contingency plan testing, security control reviews, Plan of Action and Milestones (POA&M) tracking, and developing associated reports.
Provide recommendations for proper controls and countermeasures based on the discovered vulnerabilities that are in compliance with Federal policies / mandates, standards, and guidelines, and best business practices for information assurance.
Develop and maintain documentation supporting the processes and work instructions related to information technology security related functions.
Develop and present training materials to enhance the overall security awareness of site personnel.

Requirements

What you’ll need

Bachelor's degree in information systems security, computer science, or related field preferred or equivalent combination of education and experience
Eight or more years of experience in information systems security and/or network operations/support
Must possess a solid understanding of IT Security including network and host security products such as intrusion detection systems, firewalls, VPNs, anti-virus and anti-spyware systems and security tools such as vulnerability scanners, wireless network scanners, and packet analyzers
Experience with Nessus, BigFix, FireEye HX, and/or Splunk a plus
Possess a solid understanding of FISMA, NIST and other guidance applicable to Federal information systems
Experience with evaluating system, network, or infrastructure security controls against FISMA and NIST guidelines
Working knowledge of typical LAN/WAN technologies and protocols
Possess active security clearance or have the ability to acquire same at the ‘secret’ level
Experience working with Microsoft Office suite
Experience working with computer programming
Must possess strong written and oral communication skills, strong customer service qualities, and the ability to work in a team environment

Benefits

Comp & perks

competitive compensation
Health and Wellness programs
Income Protection
Paid Leave
Retirement

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

information systems securitynetwork operationsvulnerability mitigationrisk assessmentssecurity control reviewscontingency plan testingsecurity incident handlingsecurity auditintrusion detectionnetwork security

Soft Skills

strong written communicationstrong oral communicationcustomer serviceteamworktraining developmentdocumentation skillsanalytical skillsproblem-solving

Certifications

active security clearanceBachelor's degree in information systems securityBachelor's degree in computer science