Leidos is seeking an RMF/Information Assurance Engineer to support large-scale migration and operations on a large, high-profile DOD contract In Fort Belvoir, VA. The I3TS program provides enterprise-wide IT support to enable DTRA’s Information Management & Technology Directorate (ITD) to consolidate, modernize, and continuously innovate the delivery of IT services and mission capabilities to DTRA’s internal and external mission partners operating in CONUS and OCONUS locations.
Clearance: Active DoD TS/SCI at time of considerstion.
Primary Responsibilities:
Continuous upkeep, monitoring, analysis, and response to Information System, network and security events.
Maintaining the NIPR and SIPR RMF packages for all enclaves within scope of the contract.
Documents compliance actions within the approved automated compliance tracking system
Ensures systems are operated, maintained, and disposed of in accordance with internal security policies and practices outlined in the System Security Plan (SSP), Standard Operating Procedures (SOP), and customer directives.
Ensures records are maintained for workstations, servers, software, routers, firewalls, network switches, crypto, and other relevant hardware/equipment throughout the information system's life cycle.
Evaluates proposed changes or additions to the information system and advises senior site leadership of the security relevance.
Participates in internal/external security audits/inspections; performs risk assessments and Continuous Monitoring.
Ensure proper protection and / or corrective measures have been taken when an incident or vulnerability has been discovered
Working with the Facility Security Officer (FSO) to develop, implement and manage a formal Information Security / Information Systems Security Program.
Develop, implement and enforce Information Security Policies and Procedures.
Review and update IS Authorization documentation (Body of Evidence) to support IS Assessment and Authorization (Certification/Accreditation) activities.
Basic Qualifications:
BS degree with 8+ years’ experience or 12+ years of IA experience without a degree.
Current IAT Level II or higher Certification such as Security + or CISSP.
Understanding of the Risk Management Framework (RMF), NIST, ICD, and CNSS standards.
Familiarity with network technologies (LAN & WAN) and best practices within a classified environment to include crypto and key management
STIG compliance, SCC and STIG Viewer experience, and ACAS expertise.
Expert with Microsoft Windows, Linux, and system virtualization in a secure network environment.
Must be able to work in a constantly changing regulatory environment with short-, mid-, and long-term timelines for remediating any non-compliance
Must be able to work well within a team environment and able to adapt quickly to change
Good writing and verbal presentation skills
Active DoD TS/SCI at time of considerstion.
Preferred Qualifications
Past or current ISSM/ISSO experience
Security+ or CISSP
GCIH a plus
DoD IS knowledge and experience
Background or understanding of System Security Plans (SSP)
Security hardening scripting/automation experience
Microsoft OS Certification (MCSE Win 7 or other)
Linux certification (RHCSA, CompTIA Linux, LCFS/LCFE, etc.)
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:August 21, 2026For 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.
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.
Skills Required
- Bachelor’s degree with 8 or more years of experience, or 12 or more years of information assurance experience without a degree
- Current IAT Level II or higher certification, such as Security+ or CISSP
- Understanding of the Risk Management Framework, NIST, ICD, and CNSS standards
- Familiarity with LAN and WAN technologies and best practices in classified environments
- Experience with cryptography and key management
- STIG compliance, SCC, and STIG Viewer experience
- ACAS expertise
- Expertise with Microsoft Windows, Linux, and system virtualization in secure network environments
- Ability to work in changing regulatory environments and manage remediation timelines
- Ability to work effectively in a team and adapt quickly to change
- Good written and verbal presentation skills
- Active DoD TS/SCI clearance at time of consideration
- Past or current ISSM or ISSO experience
- GCIH certification
- DoD information systems knowledge and experience
- Background or understanding of System Security Plans
- Security hardening scripting or automation experience
- Microsoft OS certification, such as MCSE
- Linux certification, such as RHCSA, CompTIA Linux, LCFS, or LCFE
Leidos Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Leidos and has not been reviewed or approved by Leidos.
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Healthcare Strength — Healthcare coverage is described as comprehensive, with multiple plan options, low office-visit copays in some plans, and access to mental health and wellness support tools. The availability of HSA/FSA options and employer contributions is positioned as a meaningful part of the total package.
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Retirement Support — Retirement benefits are framed as a strong component of total rewards, highlighted by a 401(k) match and immediate vesting in the standard package. The Employee Stock Purchase Plan is also presented as an additional long-term wealth-building feature.
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Wellbeing & Lifestyle Benefits — Wellbeing and lifestyle supports extend beyond core insurance, including wellness programs, fitness-related stipends, and assistance resources. Work flexibility and related perks are also included as part of the broader rewards experience.
Leidos Insights
What We Do
We Are Leidos For 50 years we have been tackling some of the biggest problems that face our nation and our world. OUR MISSION Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020. Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®. Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos. Your most important work is ahead.
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