ManTech
MANTECH
seeks a motivated and skilled
Senior Systems Administrator
to join our sustainment team in
Chantilly, VA.
In this role, you will support a mission-critical enterprise environment by ensuring the continued health, performance, and compliance of complex network and system infrastructures. You will help drive key Operations and Maintenance (O&M) activities while leveraging strong technical expertise and collaborative problem-solving to maintain optimal system functionality.
Responsibilities include, but are not limited to:
Provide hands‑on O&M support for enterprise systems, including break‑fix resolution and routine sustainment tasks
Monitor system performance, health, and availability using enterprise tools such as ServiceNow and JIRA
Collaborate with engineering and Assessment & Authorization (A&A) teams to apply patches, perform upgrades, and ensure RMF compliance
Support Identity and Access Management (IdAM) initiatives, including PKI, LDAP, and related authentication technologies
Maintain system documentation, configuration management, and security baselines in tools such as GitLab and Confluence
Conduct vulnerability scans, apply security patches, and ensure adherence to established cybersecurity standards
Contribute to DevOps and Agile processes by supporting deployments and collaborating closely with QA and development teams
Provide clear and timely communication on system status, planned maintenance, and incident response activities to stakeholders
Minimum Qualifications:
Bachelor’s degree or 4+ additional years of relevant experience in lieu of a degree
5+ years of experience in IT, O&M, sustainment, and/or break‑fix support
Demonstrated experience performing system break‑fix and troubleshooting activities
Experience supporting cloud and virtualized environments
Proficiency with PKI and IdAM COTS/custom solutions
Familiarity with Agile and DevOps methodologies
IAT Level II certification (GSEC, Security+, SSCP, or CCNA‑Security)
Preferred Qualifications:
Experience with automation platforms such as Puppet and Ansible
Knowledge of high‑availability and clustered system architectures
Familiarity with IdAM technologies including PKI, LDAP, SAML, OAuth 2.0, OpenID Connect, and API Gateways
Proven experience collaborating within DevOps and Agile engineering teams
Proficiency using ticketing systems such as ServiceNow and JIRA
Understanding of network and cloud infrastructure technologies
Strong knowledge of patch management systems and group policy configuration
Clearance Requirements:
Active TS/SCI with CI Polygraph is required for this position
Physical Requirements:
Must be able to remain in a stationary position up to 50% of the time
Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
Frequently communicates with co‑workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations
MANTECH International Corporation considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.
If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.
#J-18808-Ljbffr
seeks a motivated and skilled
Senior Systems Administrator
to join our sustainment team in
Chantilly, VA.
In this role, you will support a mission-critical enterprise environment by ensuring the continued health, performance, and compliance of complex network and system infrastructures. You will help drive key Operations and Maintenance (O&M) activities while leveraging strong technical expertise and collaborative problem-solving to maintain optimal system functionality.
Responsibilities include, but are not limited to:
Provide hands‑on O&M support for enterprise systems, including break‑fix resolution and routine sustainment tasks
Monitor system performance, health, and availability using enterprise tools such as ServiceNow and JIRA
Collaborate with engineering and Assessment & Authorization (A&A) teams to apply patches, perform upgrades, and ensure RMF compliance
Support Identity and Access Management (IdAM) initiatives, including PKI, LDAP, and related authentication technologies
Maintain system documentation, configuration management, and security baselines in tools such as GitLab and Confluence
Conduct vulnerability scans, apply security patches, and ensure adherence to established cybersecurity standards
Contribute to DevOps and Agile processes by supporting deployments and collaborating closely with QA and development teams
Provide clear and timely communication on system status, planned maintenance, and incident response activities to stakeholders
Minimum Qualifications:
Bachelor’s degree or 4+ additional years of relevant experience in lieu of a degree
5+ years of experience in IT, O&M, sustainment, and/or break‑fix support
Demonstrated experience performing system break‑fix and troubleshooting activities
Experience supporting cloud and virtualized environments
Proficiency with PKI and IdAM COTS/custom solutions
Familiarity with Agile and DevOps methodologies
IAT Level II certification (GSEC, Security+, SSCP, or CCNA‑Security)
Preferred Qualifications:
Experience with automation platforms such as Puppet and Ansible
Knowledge of high‑availability and clustered system architectures
Familiarity with IdAM technologies including PKI, LDAP, SAML, OAuth 2.0, OpenID Connect, and API Gateways
Proven experience collaborating within DevOps and Agile engineering teams
Proficiency using ticketing systems such as ServiceNow and JIRA
Understanding of network and cloud infrastructure technologies
Strong knowledge of patch management systems and group policy configuration
Clearance Requirements:
Active TS/SCI with CI Polygraph is required for this position
Physical Requirements:
Must be able to remain in a stationary position up to 50% of the time
Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
Frequently communicates with co‑workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations
MANTECH International Corporation considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.
If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.
#J-18808-Ljbffr