Systems Engineer
Leidos Inc
Get more replies from employers
Send a job-specific resume in minutes.
Benefits offered by this job
Job summary
Leidos is seeking a Senior Systems Engineer to design, build, integrate, and sustain Windows-based systems within complex enclave environments. You will focus on Windows domain engineering, Active Directory administration, and integration of core services like Citrix, Exchange, and SQL Server.
The role emphasizes interoperability across diverse systems, with responsibilities spanning GPO design, PKI, and endpoint security enforcement using Trellix ePO.
Qualifications
- Bachelor's degree required; 8+ years experience or 6+ years with master's.
- TS/SCI with poly clearance is required.
- Strong knowledge of Windows AD, Group Policy, WSUS, and patching.
- Experience with Exchange, SQL Server, and Citrix in AD environments.
Responsibilities
- Design, build, integrate, and maintain Windows-based systems across enclave environments.
- Administer AD environments and manage domain services and PKI/certificates.
- Design and implement Group Policy for security and configuration baselines.
- Integrate and support systems including Exchange, SQL Server, and Citrix.
- Support endpoint security using Trellix ePO and collaborate on vulnerability remediation.
Skills
Education
Tools
Job description
Systems Engineer - Windows Domain & Integration
Looking for an opportunity to make an impact?
At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. We empower our teams, contribute to our communities, and operate sustainable. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business.
If this sounds like the kind of environment where you can thrive, keep reading!
Leidos Intelligence Group uses a wide range of capabilities in Digital Modernization, Mission Software Systems, and enabling technologies like Artificial Intelligence and Machine Learning to support our customers' mission to defend against evolving threats around the world. Our team's focus is ensuring our intelligence customers have the right tools, technologies, and tactics to keep pace with an ever-evolving security landscape and succeed in their pursuit to protect people and critical assets. To explore and learn more, click here!
We are seeking a Senior Systems Engineer responsible for the design, build, integration, and lifecycle management of Windows-based systems within complex enclave environments. This role focuses on delivering and sustaining reliable, secure, and interoperable system capabilities across Windows server infrastructure, domain services, and integrated COTS applications.
The position centers on Windows domain engineering, including Active Directory administration, Group Policy architecture, and integration of core services such as Citrix, Microsoft Exchange, and Microsoft SQL Server. The role also includes support for endpoint security enforcement using Trellix ePolicy Orchestrator (ePO), as well as certificate and PKI services that support authentication and secure communications across systems.
This environment consists of multiple independent systems and domains supporting a wide range of COTS and engineering applications. These may include collaboration and workflow tools (such as Jira, Confluence, and SharePoint) as well as engineering platforms (such as SolidWorks and MATLAB). Deep expertise in any single application is not required; success in this role depends on the ability to integrate and sustain interoperability across diverse systems.
The role requires strong engineering discipline, the ability to manage multiple concurrent efforts, and the flexibility to support both design and operational activities as needed.
Are you ready to make an impact? Begin your journey of a flourishing and meaningful career, share your resume with us today!
-
Windows Domain Engineering & Systems Lifecycle
Design, build, integrate, and maintain Windows-based systems across enclave environments
Engineer system-level solutions spanning domain services, server infrastructure, and integrated applications
Support modernization and sustainment of existing systems and platforms
-
Active Directory & Domain Services Administration
Administer and maintain Active Directory environments supporting domain-joined systems and services
Engineer secure and scalable Windows Server environments supporting core services
Support PKI and certificate services, including certificate lifecycle management and integration with domain and application services
Utilize PowerShell to automate routine administrative tasks, streamline operational workflows, and support system configuration and troubleshooting activities
Create and maintain technical documentation including design artifacts and as-built documentation for system designs and integrations
-
Group Policy Design & Management
Design, implement, and maintain Group Policy Objects (GPOs) to enforce configuration and security standards
Troubleshoot Group Policy inheritance, replication, and application issues
Maintain baseline configurations for domain-joined systems across the enclave
-
Application & COTS Integration
Integrate and support systems within Active Directory environments, including Microsoft Exchange, Microsoft SQL Server, and Citrix environments
Support authentication, authorization, and service integration across diverse COTS and engineering platforms
Ensure interoperability between infrastructure services and mission applications, including certificate-dependent services
-
Endpoint Security & Systems Management
Support endpoint security configuration and policy enforcement using Trellix ePolicy Orchestrator (ePO)
Ensure systems comply with established security baselines and organizational requirements
Collaborate with security teams to support vulnerability remediation and enforcement activities
-
Systems Integration & Collaboration
Work closely with application owners, network engineers, storage teams, and security teams to support integration across enclave systems
Resolve cross-platform integration challenges spanning identity, infrastructure, and application layers
Support troubleshooting across interconnected systems
-
Operational Support & Sustainment
Provide operational support as required to maintain stability of domain and server environments
Support incident response and infrastructure issue resolution as part of engineering ownership
Requires a Bachelor degree and at least 8 years of experience or Master and at least 6 years of experience OR at least 12 years of experience in lieu of degree.
Must have a TS/SCI with poly to be considered.
Must have strong knowledge of Windows Active Directory, Group Policy and must understand WSUS and third party software patching.
Integrate and support systems within Active Directory environments, including Microsoft Exchange, Microsoft SQL Server, and Citrix environments
NetApp storage systems and SAN concepts
Nutanix virtualization and HCI environments
FSLogix profile/containerization in VDI environments
Citrix virtualization and application delivery concepts
Multi-factor authentication platforms and identity integration patterns
Data center replication and disaster recovery concepts (replication, failover, site resilience)
Development and maintenance of operational runbooks and procedures
- TS/SCI with Poly
You will be required to pass both a customer required and administered medical and psychological screening, as a condition of employment
#MSBA
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 3, 2026
Pay Range $107,900.00 - $195,050.00
The Leidos pay range for this job level is a general guideline onlyand 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 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 $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.
- competitive compensation
- Health and Wellness programs
- Income Protection
- Paid Leave
- Retirement
More details are available at www.leidos.com/careers/pay-benefits.
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.
'/%3e%3cpath%20d='M101.744%2012.4726L102.894%2016.1947L99.0021%2013.2201L101.744%2012.4726ZM105.3%208.40937H100.488L99.0026%203.59473L97.5116%208.41047L92.7%208.40385L96.5965%2011.3834L95.1055%2016.1942L99.0021%2013.2196L101.408%2011.3834L105.3%208.40992V8.40937Z'%20fill='white'/%3e%3cdefs%3e%3clinearGradient%20id='paint0_linear_5593_1381'%20x1='90'%20y1='9.44471'%20x2='99'%20y2='9.44471'%20gradientUnits='userSpaceOnUse'%3e%3cstop%20stop-color='%2300AD70'/%3e%3cstop%20offset='0.998594'%20stop-color='%2300B67A'/%3e%3cstop%20offset='1'%20stop-color='%23DCDCE6'/%3e%3c/linearGradient%3e%3c/defs%3e%3c/svg%3e){kind=small}
