Senior Cloud System Administrator

MANTECH; Corridor North (MD); On-site; USD 120,000 - 180,000; Full time

Job summary

MANTECH is seeking a Sr Cloud System Administrator to join our team in Annapolis Junction, MD. You will manage Windows and Linux environments, primarily in AWS, and contribute to enterprise infrastructure supporting a global workforce.

The role emphasizes automation, CI/CD integration, and security, with a requirement for IAT II certification and active TS/SCI with Polygraph. On-site work with strong collaboration across defense-focused teams.

Qualifications

• Bachelor’s degree required; additional 5 years of SA experience may substitute for degree.
• 15+ years of experience in Systems Administration/Cloud Engineer roles.
• Must hold an IAT II certification (e.g., Security+ or equivalent).
• Proficiency in administering Linux operating systems.
• Experience with Windows Server 2022 administration and networking.
• Proven experience with cloud environments and AWS.

Responsibilities

• Provide admin/support for Windows Server 2019/2022 environments (AD, DNS, CA, clients).
• Administer and troubleshoot Linux distributions (RHEL8/9, Amazon Linux 2023) in AWS.
• Deploy and maintain cloud environments, primarily AWS; support on-prem infrastructure.
• Develop and maintain automation scripts with SaltStack, Ansible, Bash and Python.
• Collaborate with development teams to support CI/CD deployments and automation.
• Monitor AWS resources (EC2, S3, VPC, IAM) and system performance.

Skills

Active Directory

Windows Server administration

Linux administration

AWS cloud management

Automation scripting

SaltStack

Ansible

CI/CD pipelines

Cloud security

Education

Bachelor’s degree in system engineering, Computer Science, Information Systems, Engineering Science, Engineering Management or related field

Tools

SaltStack

Ansible

Bash

Python

AWS

Linux (RHEL/Amazon Linux)

EC2/S3/VPC/IAM

Job description

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 substitutedfor 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 administeringLinuxoperating systems.
• Experience with Windows Server 2022 administration, including Active Directory and networking
• Proven experience as a System Administrator or Cloud Engineer with practical knowledge of cloud environments

Preferred Qualifications:

• Experience working in enterprise or government environments
• Familiarity with cloud security and compliance practices
• Hands-on experience with Amazon Web Services (AWS) for infrastructure deployment, management, and troubleshooting
• Strong communication and interpersonal skills, capable of working effectively in a team environment
• Proficiency in administering and troubleshooting Linux distributions (e.g., RHEL8/9, AmazonLinux 2023).

Clearance Requirements:

• Must have a current/active TS/SCI with Polygraph

Physical Requirements:

• The candidate must be able to move, carry, and deliver workstations from the office to customer desks
• The person in this position must be able to remain in a stationary position 50% of the time
• Must communicate with co-workers, management, and customers via email, phone, or virtual meetings, which may involve delivering presentations. Must be able to exchange accurate information in these situations.