Junior Information Systems Security Officer (ISSO)

Annapolis Junction, MD

Full-time

Onsite

Entry, Mid Level

Leidos is a technology and engineering company serving government and commercial customers with digital and mission innovations. The Junior Information Systems Security Officer will support Information Assurance initiatives, maintain system security integrity, conduct security operations and risk assessments, and contribute to continuous compliance with the DoD Risk Management Framework for classified information systems.

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Responsibilities

Oversee daily security configurations for classified processing environments
Conduct rigorous vulnerability scans and comprehensive risk assessments
Evaluate new security solutions to strengthen the overall system architecture
Guide systems through the full RMF Authorization to Operate (ATO) lifecycle
Author System Security Plans (SSPs) and Risk Assessment Reports
Maintain precise Security Control Traceability Matrices (SCTMs) and A&A packages
Administer strict Configuration Management (CM) for software, hardware, and firmware
Audit security controls to confirm baseline integrity across enclaves
Analyze the security impact of proposed technical system changes
Provide technical guidance on complex security policies to stakeholder groups
Proactively hunt for weaknesses and deploy strategic solutions to raise resilience
Partner with engineering teams to embed security best practices early

Qualification

Required

Bachelor's Degree (Computer Science, Cybersecurity, IA, or related) + 2+ years of relevant experience
OR Master's Degree (Computer Science, Cybersecurity, IA, or related) + 0+ years of experience
or High School Diploma / Equivalent + 6+ years of direct experience (considered case-by-case)
DoD 8140 Compliant at IAM Level I/II or IAT Level III (e.g., CISSP, CASP or SecurityX, Security+)
Excellent interpersonal communication skills
Strong organizational and goal-oriented focus
Critical-thinking, collaborative, team-first mindset
Active TS/SCI with Polygraph required

Preferred

Familiarization with Information Assurance software tools (e.g., Nessus, Splunk, ServiceNow, XACTA, eMASS)
Direct or indirect exposure to the specific customer domain and operating environment
Prior technical background in System Administration, Network Engineering, or Systems Engineering

Benefits

Paid Time Off
11 paid Holidays
401K with a 6% company match and immediate vesting
Flexible Schedules
Discounted Stock Purchase Plans
Technical Upskilling
Education and Training Support
Parental Paid Leave
Health and Wellness programs
Income Protection
Paid Leave
Retirement

Leidos is an industry and technology leader serving government & commercial customers with smarter, more efficient digital and mission innovations.

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3.9

Founded in 1969

Reston, Virginia, USA

10001+ employees

https://www.leidos.com

Leidos is an industry and technology leader serving government & commercial customers with smarter, more efficient digital and mission innovations.

Glassdoor