Leidos is seeking a Cyber Engineer to assist with leading our IA team in Arlington, VA. This position is 100% on-site.
The Senior Cybersecurity Engineer supports a DISA mission customer on the CESO ITSS effort. The role analyzes and defines security requirements for multilevel security (MLS) systems and designs, engineers, integrates, and implements secure solutions that meet those requirements to result in a sustained ATO. This position supports secure system operations through documentation, audits, and risk/vulnerability analysis across the full system development life cycle (SDLC).
This role supports a Special Access Program (SAP). The selected candidate must be able to meet additional government customer reporting requirements associated with SAP and/or SCI access (requirements may include additional reporting expectations and use of customer-specified forms/processes).
Primary responsibilities
- Provide day-to-day technical leadership for cybersecurity team, including planning/assigning work and prioritizing tasks to meet contract commitments. “Direct supervision” activities may include assigning work and providing input into performance/salary reviews, approving timecards/expenses, and making recommendations that affect employment/compensation/retention
- Analyze and define security requirements for MLS systems; translate mission needs into implementable security requirements and designs.
- Design, develop, engineer, integrate, and implement solutions that meet security requirements, including integration/implementation of system security solutions.
- Conduct security audits and generate system-level security documentation; support security planning artifacts and documentation expectations.
- Support development of System Operating Procedures (SOPs) / System Operation Procedure documents to enable secure operations.
- Apply IT governance knowledge, risk mitigation strategies, and encryption/decryption concepts to establish secure solutions.
- Perform risk analysis (risk assessment processes and procedures) and recommend information assurance/security solutions that support customer requirements.
- Perform vulnerability/risk analyses of systems and applications during all phases of the SDLC and support required testing/evaluation and flaw remediation processes.
Required qualifications
- Active TS/SCI security clearance with ability to obtain CI Poly.
- Bachelor’s degree in Cybersecurity, Computer Science, Information Systems, Engineering, or related (or equivalent experience).
- 12+ experience performing cybersecurity engineering for complex systems (requirements, secure design, integration/implementation, audits, documentation).
- Experience producing system-level security documentation and supporting security planning activities (e.g., system security plans)
- Experience performing risk assessments and vulnerability/risk analyses across the SDLC
- Strong technical writing skills (SOPs, procedures, engineering/security documentation).
- Ability to obtain and maintain SAP access
Preferred qualifications
- Direct experience supporting DISA mission customers.
- Direct experience supporting SAP/Special Access environments and associated compliance/reporting expectations.
- Experience applying security engineering practices that integrate security requirements throughout SDLC activities.
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:June 24, 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.
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.
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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.
