MANTECH
Senior Systems Administrator - Windows/Linux Dual-Stack Specialist
MANTECH, Fairmont, West Virginia, us, 26555
MANTECH
seeks a motivated and customer‑oriented
Senior Systems Administrator – Windows/Linux Dual‑Stack Specialist
to join our team in
Boulder, CO
or
Fairmont, WV . This role is part of the Infrastructure Support (IS) team and is critical for maintaining the stability, integrity, and security of a high‑impact large‑scale enterprise network infrastructure. The ideal candidate will be a proactive problem‑solver with a strong background in network operations, security, and cloud services.
Responsibilities
Provide expertise in the full lifecycle management of Windows Server environments, including building, configuring, patching, and hardening Windows Server installations (e.g., 2019/2022) from bare‑metal or virtual templates to meet all Federal Information Security Management Act (FISMA) High requirements.
Design, deploy, and maintain complex Active Directory (AD) forests, domains, trusts, and replication topologies. Expertly manage Group Policy Objects (GPOs), DNS, DHCP, and Public Key Infrastructure (PKI) services. Manage and maintain virtualized environments (VMware vSphere/ESXi, Hyper‑V) and support the administration of cloud platforms (e.g., Azure, AWS, Google) utilized by the team.
Manage and enforce privileged access management (PAM) solutions, user accounts, service accounts, and resource permissions in strict accordance with government security policies.
Utilize scripting languages (e.g., Python, Bash, PowerShell) and configuration management tools (e.g., Ansible, Puppet) to automate repetitive tasks, configuration baselines, and deployment pipelines across both Windows and Linux environments.
Lead efforts to integrate Linux systems into the overall IT architecture and support the migration of services and functions away from Windows platforms.
Minimum Qualifications
Bachelor’s degree and 4+ years of experience in Systems Administration, with demonstrated expertise in both Windows Server and Enterprise Linux environments.
Expert‑level, hands‑on experience in building, securing, and troubleshooting Windows Servers from scratch and designing complex Active Directory environments.
Senior‑level experience with Linux system administration, networking, security hardening, and scripting/automation tools.
Proven working knowledge of U.S. Federal Government cybersecurity compliance standards, including FISMA, NIST Special Publications (especially 800-53/800-171), and Continuous Diagnostics and Mitigation (CDM) practices.
Preferred Qualifications
Microsoft Certified Systems Administrator/Engineer (MCSA/MCSE) or equivalent (e.g., Azure Administrator).
Red Hat Certified Engineer (RHCE) or equivalent advanced Linux certification.
CompTIA Security+ (or higher, e.g., CISSP, CISM, CASP+).
Experience with container technologies such as Docker, Kubernetes, and/or OpenShift.
Experience with enterprise tools such as Tenable and Microsoft System Center Configuration Manager (SCCM) or Microsoft Endpoint Configuration Manager (MECM).
Clearance Requirements
Must be a U.S. Citizen and have a current/active Secret Security clearance.
Physical Requirement
Must be able to remain in a stationary position 50% of the time.
Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine, and computer printer.
Seniority level
Mid‑Senior level
Employment type
Full‑time
Job function
Information Technology
Industries
IT System Data Services
Referrals increase your chances of interviewing at MANTECH by 2x.
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seeks a motivated and customer‑oriented
Senior Systems Administrator – Windows/Linux Dual‑Stack Specialist
to join our team in
Boulder, CO
or
Fairmont, WV . This role is part of the Infrastructure Support (IS) team and is critical for maintaining the stability, integrity, and security of a high‑impact large‑scale enterprise network infrastructure. The ideal candidate will be a proactive problem‑solver with a strong background in network operations, security, and cloud services.
Responsibilities
Provide expertise in the full lifecycle management of Windows Server environments, including building, configuring, patching, and hardening Windows Server installations (e.g., 2019/2022) from bare‑metal or virtual templates to meet all Federal Information Security Management Act (FISMA) High requirements.
Design, deploy, and maintain complex Active Directory (AD) forests, domains, trusts, and replication topologies. Expertly manage Group Policy Objects (GPOs), DNS, DHCP, and Public Key Infrastructure (PKI) services. Manage and maintain virtualized environments (VMware vSphere/ESXi, Hyper‑V) and support the administration of cloud platforms (e.g., Azure, AWS, Google) utilized by the team.
Manage and enforce privileged access management (PAM) solutions, user accounts, service accounts, and resource permissions in strict accordance with government security policies.
Utilize scripting languages (e.g., Python, Bash, PowerShell) and configuration management tools (e.g., Ansible, Puppet) to automate repetitive tasks, configuration baselines, and deployment pipelines across both Windows and Linux environments.
Lead efforts to integrate Linux systems into the overall IT architecture and support the migration of services and functions away from Windows platforms.
Minimum Qualifications
Bachelor’s degree and 4+ years of experience in Systems Administration, with demonstrated expertise in both Windows Server and Enterprise Linux environments.
Expert‑level, hands‑on experience in building, securing, and troubleshooting Windows Servers from scratch and designing complex Active Directory environments.
Senior‑level experience with Linux system administration, networking, security hardening, and scripting/automation tools.
Proven working knowledge of U.S. Federal Government cybersecurity compliance standards, including FISMA, NIST Special Publications (especially 800-53/800-171), and Continuous Diagnostics and Mitigation (CDM) practices.
Preferred Qualifications
Microsoft Certified Systems Administrator/Engineer (MCSA/MCSE) or equivalent (e.g., Azure Administrator).
Red Hat Certified Engineer (RHCE) or equivalent advanced Linux certification.
CompTIA Security+ (or higher, e.g., CISSP, CISM, CASP+).
Experience with container technologies such as Docker, Kubernetes, and/or OpenShift.
Experience with enterprise tools such as Tenable and Microsoft System Center Configuration Manager (SCCM) or Microsoft Endpoint Configuration Manager (MECM).
Clearance Requirements
Must be a U.S. Citizen and have a current/active Secret Security clearance.
Physical Requirement
Must be able to remain in a stationary position 50% of the time.
Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine, and computer printer.
Seniority level
Mid‑Senior level
Employment type
Full‑time
Job function
Information Technology
Industries
IT System Data Services
Referrals increase your chances of interviewing at MANTECH by 2x.
#J-18808-Ljbffr