Senior Platform Engineer

General information

Requisition # R66747 Locations USA-Remote Work Posting Date 04/14/2026 Security Clearance Required Secret Remote Type Fully Remote Time Type Full time

Description & Requirements

Elevate your career with MANTECH International Corporation! Join a dynamic team dedicated to national security through cutting-edge technology. Since 1968, MANTECH has led in delivering advanced solutions to government intelligence, the Department of Defense, and Federal Civilian sectors. Dive into innovation in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Your journey to impactful work and rapid growth starts now—be extraordinary at MANTECH!

***This is for a future opportunity***

MANTECH seeks a motivated, career and customer-oriented Senior Platform Engineer to join MANTECHs Intelligent Engineering organization. The position is remote (US-based) with up to 10% travel.

Responsibilities include but are not limited to:

• Manage and optimize RHEL, CentOS, and Rocky server environments, focusing on kernel tuning and troubleshooting hardware-level interruptions
• Develop and maintain complex Ansible roles and inventories to automate multi-node environments and debug failed playbooks
• Utilize Python and Ruby to develop, maintain, and enhance various application services and API interactions
• Automate repetitive CLI tasks and manage system processes through expert-level Unix shell scripting
• Implement and manage virtualization solutions using KVM and QEMU to support scalable infrastructure needs
• Configure and troubleshoot Layer 2 and Layer 3 networking, including VLAN tagging, bridge interfaces, and virtual switches
• Lead STIG and CMMC compliance efforts to ensure all systems meet rigorous federal and defense security standards

Minimum qualifications:

• 9+ years of relevant experience managing RHEL/CentOS/Rocky environments, specializing in kernel tuning, hardware-level interrupt troubleshooting, and deep-dive performance profiling to resolve system bottlenecks
• Experience executing STIG and CMMC protocols
• Expert in Ansible (roles/inventories) integrated with Terraform or OpenStack to orchestrate complex, full-stack underlying infrastructure
• Proficient in Python, Ruby, and Java for backend service maintenance, API extension, and advanced Unix shell scripting for CLI automation
• Hands-on expertise in KVM/QEMU and L2/L3 networking, including VLAN tagging, bridge interfaces, and virtual switch configuration
• Proven ability to build CI/CD pipelines for automated multi-node deployment testing, supported by familiarity with Modeling & Simulation (M&S) standards

Preferred qualifications:

• Proven experience leading organizations through full CMMC Level 3+ certification cycles and architecting automated STIG compliance-as-code frameworks that reduce manual audit overhead by over 50%
• Mastery of GitOps workflows (e.g., ArgoCD or Flux) to ma