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The Defense Sector at Leidos has an opportunity for a Cyber Systems Engineer. As a Cyber Systems Engineer, you will architect, engineer, and enhance advanced cyber capabilities across a large-scale enterprise environment. This role focuses on discovering and managing cyber vulnerabilities, strengthening endpoint defenses, and integrating security technologies into complex DoW infrastructures.
This position supports the DoW ABIS system, is based in Clarksburg, WV, and requires on-site access as needed. It is a high-impact engineering role responsible for advancing endpoint security posture, optimizing cyber tool performance, and conducting vulnerability management.
Although this role is 75% remote, candidates located in the Clarksburg WV area are strongly preferred. There will be up to 25% travel to the customer site in Clarksburg WV that will be required.
Responsibilities Include:
- Oversee advanced cybersecurity protocols, risk management, and ensure DoW-aligned compliance standards.
- Monitor system and network security to detect, analyze, and respond to potential threats or anomalous activity. Investigate and respond to cybersecurity incidents, including system or network breaches and malware attacks, and support digital forensic investigations as needed.
- Conduct routine vulnerability scans, provide formal and informal reports to technical teams, and track remediation efforts to closure.
- Research and evaluate emerging cybersecurity threats and mitigation strategies; proactively identify security weaknesses and vulnerabilities; and audit systems to ensure secure configurations.
- Audit systems configuration to ensure compliance with established cybersecurity policies, STIG’s, standards, and secure configuration baselines.
- Participate in data analysis and root cause analysis following service-impacting incidents and providing recommendation for corrective actions and security improvements. Collaborate with technical teams, developers, and customer leadership to strengthen the overall security posture of the supported systems.
Required Qualifications
- Bachelors degree in Information Technology/Cybersecurity or similar field with 2 or more years of experience in cybersecurity and vulnerability management
- DoD 8140/8570-compliant certification or the ability to obtain certification within 6 months from start date.
- Must be able to pass DOJ background to access the FBI Campus - CJIS Site, in Clarksburg, WV.
- Active DoW Secret Clearance or ability to obtain a DoW Interum Secret security clearance within 120 days from start date.
Required Technical Skills
- Expertise designing and engineering enterprise endpoint security solutions.
- Experience using DoW vulnerability management tools (ACAS, Security Center, Nessus, ETC).
- Experience performing log analysis using logging tools such as Splunk.
- Advanced understanding of cyber threats, mitigation strategies, and endpoint security best practices.
- Strong knowledge of DoD cybersecurity policies, compliance frameworks, and enterprise security standards.
- Understanding of DoW Security Technical Implementation Guides (STIGs) and automation tools.
- Strong understanding of Windows and Linux operating systems and patching processes.
- Familiarity with Agile development tools such as Jira, Confluence, ETC to manage work and collaborate with team members.
Desired Skills
- Active DoW Secret security clearance.
- Experience with network-based security tools, preference for Palo Alto.
- Understanding of AWS Cloud Architecture, with an emphasis on cloud security.
- Experience with eMASS and ATO process for DoW systems.
- Knowledge of Risk Management Framework and NIST 800-53 rev 4/5 security control compliance.
- Excellent written and verbal communication skills, and ability to speak directly to customer regarding security related concerns.
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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 19, 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 in Information Technology, Cybersecurity, or a similar field
- At least 2 years of experience in cybersecurity and vulnerability management
- DoD 8140/8570-compliant certification, or ability to obtain it within 6 months of starting
- Ability to pass a DOJ background investigation for access to the FBI Campus CJIS Site
- Active DoD Secret clearance or ability to obtain an interim Secret clearance within 120 days
- Experience designing and engineering enterprise endpoint security solutions
- Experience with DoD vulnerability management tools such as ACAS, Security Center, or Nessus
- Experience performing log analysis using tools such as Splunk
- Advanced understanding of cyber threats, mitigation strategies, and endpoint security best practices
- Knowledge of DoD cybersecurity policies, compliance frameworks, and enterprise security standards
- Understanding of DoD Security Technical Implementation Guides and automation tools
- Strong understanding of Windows and Linux operating systems and patching processes
- Familiarity with Agile development tools such as Jira and Confluence
- Experience with network-based security tools, preferably Palo Alto
- Understanding of AWS cloud architecture, with emphasis on cloud security
- Experience with eMASS and the DoD ATO process
- Knowledge of Risk Management Framework and NIST 800-53 revision 4/5 security control compliance
- Excellent written and verbal communication skills, including the ability to discuss security concerns directly with customers
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.
