Systems Engineer

Leidos has a new and exciting opportunity for an Infrastructure Systems Engineer in our Intelligence Sector's Cyber and Analytics Business Area. Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management.

At Leidos, we offer competitive benefits, including 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, and much more. Join us and make a difference in National Security! Our LOE program provides our customers' Cryptanalysis & Signals Analysis organization with innovative technical solutions that support critical mission objectives.

Through rapid prototyping, advanced technology research, and new capability development, our team continuously pushes the boundaries of mission-focused engineering. From leading-edge visualizations to analytic development, we are committed to delivering the tools and technologies our customers need to answer the nation's most challenging intelligence questions. Click here to learn more about how this program “Delivers Mission Success!”

We are seeking an experienced Systems Engineer to support a mission-critical secure enclave environment consisting of both physical and virtual infrastructure. This role supports Linux and Windows systems, network infrastructure, security compliance, and mission operations while ensuring the reliability, security, and availability of the environment.

The successful candidate will administer and maintain systems and network infrastructure, configure hardware and network devices, support firewalls, perform vulnerability remediation, manage backups and compliance activities, troubleshoot complex technical issues, and support secure data movement across the environment. Qualified candidates are eligible for enhanced incentives, including up to a $25,000 sign-on bonus or a paid time off bonus.

Primary Responsibilities Administer and maintain secure Linux (Red Hat) and Windows systems supporting mission operations. Configure, maintain, and troubleshoot physical and virtual network infrastructure and associated network devices. Install, configure, and support network hardware, firewalls, and supporting infrastructure.

Perform system maintenance, software updates, patch management, backups, and security compliance activities. Conduct vulnerability scanning and assist with remediation efforts to maintain secure system operations. Manage user accounts and troubleshoot client/server and network connectivity issues.

Support secure data management and data transfer activities across mission systems. Maintain system availability while supporting mission-critical infrastructure in a secure enclave environment. Collaborate with team members to troubleshoot operational issues and support evolving mission requirements.

Basic Qualifications Bachelor's degree with 5+ years of relevant experience, candidates without bachelors degrees will require additional years of experience and will be considered on a case by case basis Experience administering Linux (Red Hat) and Windows operating systems. Experience supporting physical and virtual network infrastructure. Experience troubleshooting client/server environments and network connectivity issues.

Experience with data management and secure data transfer. Knowledge of vulnerability management, system maintenance, patching, backups, and compliance activities. Understanding of STE/STN requirements.

IAT Level II certification (Security+, CSA+, or equivalent). Active TS/SCI with Polygraph security clearance.

Preferred Qualifications

• Experience with Ansible automation.
• Experience with VMware virtualization technologies.
• Experience using GitLab.
• Experience with Quay.
• Knowledge LatteArt/Biscotti Experience supporting classified or mission-critical secure enclave environments.
• At Leidos, the opportunities are boundless.
• We challenge our staff with interesting assignments that allow them to thrive professionally and personally.
• For us, helping you grow your career is good business.
• We look forward to learning more about you – apply today!
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• At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it.
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• Original Posting: July 16, 2026 For 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.
• Pay Range: Pay Range $87,100.00 - $157,450.00 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 Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations.
• Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026.
• For more information, visit www.Leidos.com.
• Pay and Benefits Pay and benefits are fundamental to any career decision.
• That's why we craft compensation packages that reflect the importance of the work we do for our customers.
• Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement.
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• Commitment and Diversity All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law.
• Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.