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Leidos
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May 1, 2026
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Cybersecurity Specialist - Junior

Reston, VA
Full-time
Onsite
$58K/yr - $105K/yr
Entry Level
Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. They are seeking a Junior Cybersecurity Specialist to support the organization’s cybersecurity program by implementing and maintaining security operations at both tactical and operational levels, ensuring effective security controls across key areas.
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Responsibilities

  • Support the secure architecture, design, and implementation of DoD systems in accordance with DoDI 8510.01, NIST SP 800-53, and other DoD security guidance
  • Lead the integration of RMF activities into the system development lifecycle (SDLC), including selecting, implementing, and validating security controls
  • Develop and maintain key security documentation such as System Security Plans (SSPs), Security Assessment Reports (SARs), Risk Assessments, and Plan of Action and Milestones (POA&Ms)
  • Collaborate with ISSOs, ISSMs, developers, and system owners to ensure systems are developed and maintained with approved security configurations
  • Apply Security Technical Implementation Guides (STIGs) to systems and validate compliance using tools such as SCAP, STIG Viewer, and ACAS
  • Apply security patching
  • Maintain application, network, and database scanning infrastructure (application/product updates, database maintenance, benchmark/audit files, application/server builds, rule pack/content updates, scanner, or agent deployment etc.)
  • Analyze vulnerability scans and ensure timely mitigation or acceptance of risks based on DoD policies
  • Provide technical input to support and maintain system authorization
  • Participate in system reviews, architecture assessments, and engineering design reviews to embed cybersecurity from the outset
  • Develop and implement automation or security tools to improve the compliance and monitoring of systems
  • Support security incident response and forensics analysis in coordination with ISSMs and Security points of contact

Qualification

Required

  • Bachelors degree and less than 2 years of experience. Entry-level Cybersecurity experience including internships. Additional years of experience in lieu of degree are accepted
  • Experience with reviewing cybersecurity vulnerabilities for risk and relevance as well as in vulnerability mitigations/remediation planning, for identified systems, network, application and database vulnerabilities and applying security patching
  • Active TS/SCI clearance with the ability to obtain and maintain TS/SCI with Polygraph
  • Due to the nature of the government contracts we support, US Citizenship is required
  • Understanding of Microsoft Windows and/or Linux/UNIX operating systems
  • Experience with middleware / web technologies (Apache, tomcat, IIS, etc.)
  • Experience with Databases (Postgres, MS SQL, MySQL, ElasticSearch, etc.)
  • Understanding of TCP/IP networking
  • Experience with Continuous Integration and Continuous Delivery Platforms (Jenkins, Bamboo, GitlabCI TFS, etc.)
  • Familiar with NIST 800-171, 800-172, NIST SSDF, and CMMC requirements
  • Experience supporting DoD/IC systems through the entire Risk Management Framework Plus (RMF) process
  • Experience with System Security Engineering management processes to integrate security and privacy controls into complex hardware and software systems
  • Experience developing and reviewing security concept of operations, systems security plans, security risk assessments, contingency plans, configuration management plans
  • Experience with incident response plans, plan of actions and milestones, risk management plans, and vulnerability management plans
  • Strong communication skills; able to successfully communicate with management personnel, technical personnel and third parties

Preferred

  • Bachelor's degree in Computer Science, Data Science, Engineering, Information Systems, or related technical discipline. An additional 4 years of experience may be substituted in lieu of degree
  • Three years of experience in the field with at least a portion of the experience within the last two years
  • Software development/coding experience with programming languages such as Python, Java, and React
  • Successfully achieved ATO under RMF+
  • Experience with big data applications
  • Experience with tools for ticketing and documentation (e.g., Gitlab, Jira, Confluence)
  • Experience working in an Agile environment
  • Experience with OIDC or Oauth2

Benefits

  • Competitive compensation
  • Health and Wellness programs
  • Income Protection
  • Paid Leave
  • Retirement
Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations.
Glassdoor
0
Founded in 1969
Reston, Virginia, USA
10001+ employees
https://www.leidos.com
Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations.
Glassdoor
0
Founded in 1969
Reston, Virginia, USA
10001+ employees
https://www.leidos.com