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 manage large-scale Ansible and Terraform deployments, with a focus on building self-healing infrastructure and custom provider development
• Expert-level capability in tuning Linux kernels for low-latency environments or Real-Time (RT) patches, specifically for Large Scale Modeling & Simulation (M&S) workloads requiring precise timing and hardware acceleration
• Advanced ability to design and implement custom RESTful APIs and microservices in Python or Java that bridge legacy M&S protocols with modern, cloud-native orchestration layers

Clearance Requirements:

• Must have an active Secret security clearance with the ability to obtain and maintain a TS/SCI security clearance

Physical Requirements:

• Must be able to remain in a stationary position 50%
• Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
• Frequently communicates with co-workers, management, and customers, which may involve delivering presentations
• Must be able to exchange accurate information in these situations