Senior Platform & Infrastructure Engineer, Cloud & Linux

Modern Government Solutions; Sterling (VA); On-site; USD 160,000 - 210,000; Full time

Job summary

Modern Government Solutions is seeking a Sr. Systems Engineer, Platform/Infrastructure in Sterling, VA to deploy and sustain Linux-based platforms and COTS apps in secure cloud environments supporting national security missions.

You’ll design cloud architecture, troubleshoot complex issues, and integrate enterprise services to ensure platform reliability and mission readiness. Expect collaboration with engineering, cybersecurity, and infra teams to keep critical environments running.

Qualifications

• Must possess an active DoD TS/SCI security clearance with CI Polygraph.
• DoD 8140 requirements, Security+ CE certification.
• Bachelor's or master's degree in a STEM field.
• 10+ years of experience with Linux platforms and COTS applications in cloud environments.
• Experience with cloud architecture, system design, and enterprise application integration.
• Experience supporting relational and non-relational databases including PostgreSQL, MySQL, and MongoDB.
• Experience supporting IdAM technologies including Active Directory, SAML, OpenLDAP, OAuth 2.0, and OIDC.
• Experience with DevOps tooling including Ansible, Terraform, Jenkins, and GitLab.
• Familiarity with containerized development environments including Rancher and Kubernetes.

Responsibilities

• Deploy, administer, and maintain Linux platforms and COTS applications within cloud-hosted environments.
• Design and support cloud architecture and system integrations, including workflow, ticketing, and automation platforms such as ServiceNow.
• Troubleshoot complex system, application, and infrastructure issues using log file analysis and root-cause analysis techniques.
• Administer relational and non-relational databases including PostgreSQL, MySQL, and MongoDB.
• Support Identity and Access Management (IdAM) solutions including Active Directory, SAML, OpenLDAP, OAuth 2.0, and OIDC.
• Implement and maintain DevOps automation using Ansible, Terraform, Jenkins, and GitLab.
• Support containerized environments utilizing Rancher, Kubernetes, or similar technologies.
• Conduct system testing and validation to ensure operational readiness.
• Create and maintain technical documentation, implementation guides, and operational procedures.

Skills

Linux administration

Cloud architecture

DevOps practices

Database administration

Identity and Access Management

Container orchestration

Education

Bachelor's or Master's in STEM

Tools

ServiceNow

Ansible

Terraform

Jenkins

GitLab

Kubernetes

Rancher

Job description

Modern Government Solutions is seeking a Sr. Systems Engineer, Platform/Infrastructure in Sterling, VA to deploy and sustain Linux-based platforms and COTS apps in secure cloud environments supporting national security missions.

You’ll design cloud architecture, troubleshoot complex issues, and integrate enterprise services to ensure platform reliability and mission readiness. Expect collaboration with engineering, cybersecurity, and infra teams to keep critical environments running.