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.
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 4, 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
- Active Top Secret clearance
- Bachelor's degree (or Master's with reduced experience) with 8-12 years related experience (or equivalent experience)
- Detailed understanding of RMF, NIST, ICD, and CNSS standards
- DoDM 8140 IAT Level II certification
- Experience with compliance scanning tools (e.g., SCAP)
- Experience with vulnerability scanning tools (e.g., ACAS)
- Hands-on experience implementing and managing DISA STIGs
- Familiarity with network technologies (LAN & WAN) and crypto/key management in classified environments
- Working knowledge of Microsoft Windows (workstation & server), Linux, and system virtualization (multiple hypervisors)
- Ability to document compliance activities and maintain IS lifecycle records
- Experience with incident response, vulnerability remediation, and continuous monitoring
- Good written and verbal presentation skills
- Ability to work in a changing regulatory environment and collaborate with IA, engineering, and operations teams
- Team leadership, personnel management, mentoring, and participation in CCB/Scrum processes
- Preferred: CISSP, CCNA, CCSP, MCSE, and/or SANS GIAC certifications
- Preferred: Experience with microservices, containers, and hybrid cloud architectures
- Preferred: Experience with ServiceNow RMF Workflow Management Tool
- Preferred: Familiarity administering Microsoft SharePoint
- Preferred: Knowledge of Jira, Bitbucket, Confluence, Agile, DevOps, CI/CD, and secure coding practices
- Preferred: Experience with security/quality scanning tools (Fortify, SonarQube)
- Preferred: Understanding of SIPR connected DCSA accredited information systems
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.
