Platform Engineer, TS/SCI, CI Poly

Seamless Migration LLC

. Deploy, configure, administer, and maintain infrastructure and enterprise applications across Development, Test, and Production environments .

Posted 11/6/2026full-timeUnited StatesMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in administering Linux systems, managing PostgreSQL databases, and automating infrastructure provisioning using tools like Ansible and Terraform. Proficient in troubleshooting across various environments while ensuring application availability and security.

Highest-signal resume keywords

Linux System AdministrationPostgreSQL Database ManagementInfrastructure Automation with AnsibleScripting with Bash or PythonTS/SCI Clearance with CI Poly

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Linux NetworkingApplication Configuration ManagementSSL/TLS Certificate ManagementJava Runtime SupportREST API IntegrationVirtual Machine ProvisioningInfrastructure MonitoringPerformance OptimizationApplication DeploymentSystem Troubleshooting

Tools & Technologies

AnsibleTerraformJenkinsDockerPodman

Certifications & Qualifications

TS/SCI Clearance with CI Poly

Industry Keywords

DoD/Intelligence CommunityAir-Gapped EnvironmentsOffline InstallationsConfiguration StandardsOperational Processes

Tech Stack

Tools & technologies

AnsibleDockerJavaJavaScriptJenkinsLinuxNode.jsPostgresPythonTerraformTypeScriptVMware

About the role

Key responsibilities & impact

Deploy, configure, administer, and maintain infrastructure and enterprise applications across Development, Test, and Production environments
Install, configure, and maintain applications on Red Hat Enterprise Linux (RHEL 8/9) servers
Install, configure, and support PostgreSQL databases, Java runtimes, application libraries, and supporting dependencies
Manage application configurations, system permissions, access controls, SSL/TLS certificates, and network connectivity requirements
Coordinate with VMware and Linux administrators to provision, configure, and maintain virtual machines and supporting infrastructure
Troubleshoot Linux operating system, application, database, networking, and infrastructure issues
Perform system updates, application patching, maintenance, and configuration changes
Support software installations and deployments within air-gapped and disconnected networks, including offline dependency management
Develop and maintain scripts and automation to streamline infrastructure provisioning, application deployment, and administration
Support infrastructure automation and configuration management using tools such as Ansible and Terraform
Assist with virtual machine deployment, server configuration, and automated provisioning processes
Collaborate with development teams to support application integrations, REST APIs, and automated workflows
Configure and maintain supporting infrastructure services to ensure application availability, performance, and security
Develop and maintain technical documentation, installation procedures, configuration standards, and operational processes
Work closely with government stakeholders, infrastructure teams, and developers to ensure reliable and secure system operations

Requirements

What you’ll need

Existing TS/SCI clearance with CI Poly required to start
Experience administering Linux systems and independently installing, configuring, and maintaining enterprise applications
Working knowledge of Linux networking, permissions, access controls, and security configurations, including SSL/TLS certificates
Practical knowledge of PostgreSQL database installation and administration
Familiarity supporting Java environments and software dependencies
Familiarity with Ansible, Terraform, and automated server provisioning
Experience with Bash or Python scripting and infrastructure automation or configuration management tools
Understanding of REST APIs, JSON, and application integrations
Experience supporting applications and infrastructure across Development, Test, and Production environments
Ability to troubleshoot issues across operating systems, applications, databases, and networks
Hands-on experience with virtualized infrastructure and automated server provisioning preferred
Familiarity with Ansible, Terraform, Jenkins, or CI/CD pipelines preferred
Knowledge of JavaScript, Node.js, or container tools such as Docker and Podman preferred
Experience supporting classified, air-gapped, or DoD/Intelligence Community environments, including offline installations and dependency management preferred
Familiarity with infrastructure monitoring, performance optimization, and system availability preferred

Benefits

Comp & perks

100% paid Medical, Dental & Vision for Our Employee
6% 401K match (Vested Immediately)
29 Days' PTO
Flexible Work Schedule
Tuition/Certification Reimbursement
Growth Opportunities w/in an Emerging Defense Company