Cyber Infrastructure Support Lead

Leidos Corporate Information Security Office (CISO), reporting through the Digital Sector is seeking a Cyber Infrastructure Support Lead to work with our Concord, MA team! The Cyber Infrastructure Support Lead is a primarily hands-on technical role responsible for supporting and enhancing the enterprise IT environment across both Windows and Linux platforms with a focus on system reliability, performance, and security. The role includes leadership responsibilities involving team coordination, mentorship, and serving as the primary Information Technology (IT) decision maker. The Cyber Infrastructure Support Lead is accountable for the management and technical administration of the Information System (IS) in accordance with internal and external security requirements, overseeing day-to-day testing, implementation, deployment, maintenance, and administration of cyber systems or networks and their infrastructure hardware and software. The ideal candidate is adaptable to diverse office situations, procedures, and demands, and maintains a proactive, solutions-oriented mindset.

Primary Responsibilities

• Administer and maintain Windows and Linux systems in a secure, stable, and scalable manner.
• Automate routine tasks using scripting.
• Collaborate with IA, engineering, and operations teams to deliver IT services.
• Continuous upkeep, monitoring, analysis, and response to Information System, network and security events.
• Develop procedures and documentation to ensure compliance with Configuration Management (CM) for security relevant IS software, hardware, and firmware.
• Develop, implement and enforce Information Security Policies and Procedures.
• Documents compliance activities in accordance with the governing authority approved authorization package.
• Ensure proper protection and / or corrective measures have been taken when an incident or vulnerability has been discovered.
• Ensures records are maintained for workstations, servers, software, routers, firewalls, network switches, and other relevant hardware/equipment throughout the information system's life cycle.
• Ensures systems are operated, maintained, and disposed of in accordance with the governing authority approved authorization package and customer directives.
• Evaluates proposed changes or additions to the information system and advises senior site leadership of the security relevance.
• Help prioritize work, coordinate tasks, and drive accountability within the team.
• Lead / conduct security IS education and training.
• Mentor other engineers in the art of cybersecurity and secure software development practices.
• Monitor system health, respond to incidents, and implement long-term fixes.
• Participate and remain active within the Change Control Board (CCB) process.
• Participate and remain active within local Scrum Boards.
• Participates in internal/external security audits/inspections; performs risk assessments and Continuous Monitoring.
• Personnel management for their team.
• Provide technical guidance and mentorship to junior administrators (≈20% leadership).
• Support compliance and security requirements (patching, STIGs, audits, etc).
• Training/Mentoring, education, PTO planning/development/submittal, remote work requests, end of day report requirements, quarterly check-ins, yearly reviews, and timesheet verifications/approvals.
• Working with ISSM and FSO investigations of computer security violations and incidents, reporting as necessary to both the Facility Security and Senior Program Managers.
• Working with the ISSM and FSO, author, review and update IS Authorization documentation (Body of Evidence) to support IS Assessment and Authorization activities.

Basic Qualifications

• Must currently hold active TOP SECRET clearance.
• Bachelor's degree and 8 – 12 years related experience in Information Systems, Computer Science or related field or a master’s with 6 – 10 years of related experience.
• Additional relevant experience, training, and / or certification may be considered in lieu of degree.
• Detailed understanding of the Risk Management Framework (RMF), NIST, ICD, and CNSS standards.
• Must currently hold DoDM 8140 IAT Level II certification.
• Experience with compliance scanning tools (e.g. SCAP) and vulnerability scanning tools (e.g. ACAS).
• Familiarity with network technologies (LAN & WAN) and best practices within a classified environment to include crypto and key management.
• Good writing and verbal presentation skills.
• Hands on experience with DISA Security Technical Implementation Guide (STIG) implementation and management.
• 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.
• Working knowledge with Microsoft Windows operating systems (workstation & server), Linux, and system virtualization (multiple hypervisors) in a secure network environment.

Preferred Qualifications

• Additional desired certifications include CISSP, CCNA, CCSP, MCSE, and/or SANS GIAC.
• Detailed understanding of Risk Management Framework (RMF).
• DoD IS knowledge and experience.
• Experience developing and delivering modern software, including micro services, containers, and hybrid cloud architectures.
• Experience ServiceNow RMF Workflow Management Tool.
• Experience with Windows and Linux.
• Familiarity with administering Microsoft SharePoint, including site collection configuration, permissions management, and document library/list administration.
• Knowledge of agile development processes and DevOps tools such as Jira, Bitbucket, Confluence.
• Knowledge of software development lifecycle concepts: Scaled Agile Framework (SAFe), DevOps, Continuous Integration (CI), and Continuous Deployment (CD).
• Security hardening scripting/automation experience.
• Strong knowledge of secure coding practices and vulnerability/quality scanning tools (e.g., Fortify, SonarQube).
• Understanding of SIPR Connected DCSA Accredited Information systems.

We'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.

Job Post Information

Original Posting: August 4, 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: $107,900.00 - $195,050.00. 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.

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.

• competitive compensation
• Health and Wellness programs
• Income Protection
• Paid Leave
• Retirement

More details are available here.

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.

Secure Data

Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to View email address on click.appcast.io.

Company Overview

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