Senior Cloud System Administrator

General information

Requisition # R66859 Locations USA-MD-Annapolis Junction Posting Date 03/30/2026 Security Clearance Required TS/SCI w/ Poly Remote Type Onsite Time Type Full time

Description & Requirements

Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we’ve been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now—unleash your potential with MANTECH!

MANTECH seeks a motivated, career- and customer-oriented Sr Cloud System Administrator to join our team in Annapolis Junction, MD.

Our team delivers enterprise infrastructure capabilities for a global workforce performing a wide range of missions in defense of our Nation. This effort supports the Enterprise Infrastructure Services (EIS) organization, which oversees MPO’s Enterprise Information Technology (EIT)—the backbone platform for all enterprise users.

Responsibilities:

• Provide administration and support for Windows Server 2019 and 2022 environments, including Active Directory, DNS, Certificate Authorities and manage Windows 10/11 client systems.
• Administer and troubleshoot various Linux distributions (e.g., RHEL8/9, AmazonLinux 2023) within AWS.
• Deploy, and maintain robust cloud environments, primarily within AWS, while also supporting existing on-premises server infrastructure.
• Develop, implement and maintain automation scripts and configurations using SaltStack, Ansible, Bash and Python to streamline infrastructure provisioning, configuration management and deployment processes.
• Collaborate with development teams to support integration and operational stability of auto scaled software deployments and CI/CD pipelines, ensuring smooth and reliable software deployments.
• Administer, monitor, and troubleshoot AWS cloud resources, including EC2, S3, VPC, IAM, and other core services.
• Monitor system performance, availability, and security, responding to incidents and performing root cause analysis.

Minimum Qualifications:

• 15+ years of experience as a Systems Administrator or Cloud Engineer supporting programs and contracts of similar scope and complexity 
• Bachelor’s degree in system engineering, Computer Science, Information Systems, Engineering Science, Engineering Management or related professional engineering discipline. An additional 5 years of System Administrator experience might be substituted for a degree.
• Must hold an IAT II certification (e.g., Security+ or equivalent); In absence of having a certification, candidate will have 60 days from program start to obtain it 
• Proficiency in administering Linux operating systems. 
• Experience with Windows Server 2022 administration, including Active Directory and networking 
• Proven experience