Senior Platform Engineer: Secure Infra & Automation

Jobtailor; Sterling (VA); On-site; USD 180,000 - 230,000; Full time

Job summary

Jobtailor is seeking a Senior Platform Engineer to build and scale a secure in-house infrastructure for a high-assurance environment. You will design and operate virtualization, networking, identity, and monitoring stacks, standing infrastructure up from bare metal and automating end-to-end while maintaining documentation and auditability.

The role requires deep hypervisor expertise, strong security skills, and fluency in IaC, Python, and Bash to deliver production-ready platforms with robust

Qualifications

• 5+ years in platform, infrastructure, systems, or DevOps engineering.
• Active TS/SCI clearance.
• Deep hands-on with a Type-1 hypervisor (Proxmox VE, KVM/QEMU, VMware ESXi) including clustering, shared storage, templating, and GPU passthrough.
• Strong network and security skills: segmentation, stateful firewalls, zero-trust / least-privilege design, VPNs, DNS, PKI/mTLS, and TCP/IP fundamentals.
• Demonstrated endpoint and OS hardening across Linux and Windows to CIS/STIG baselines: full-disk encryption, measured boot, host firewalls, and attack-surface reduction.
• Fluency in infrastructure-as-code and automation (e.g., Terraform, Ansible, Packer) plus Python and Bash, with a track record of shipping and maintaining working tooling and pipelines.
• Working knowledge of secrets management, containerization, Git and CI/CD, and an observability/SIEM stack.
• Proven ability to stand up infrastructure from bare metal to operational, document it in runbooks, and operate it under security- and audit-sensitive conditions.

Responsibilities

• Build, secure, administer, and scale the in-house infrastructure.
• Design and operate the virtualization, networking, identity, and monitoring stacks.
• Document environments with runbooks and maintain security/auditability.
• Turn architecture into a resilient, production-ready capability.

Skills

TS/SCI Clearance

Hypervisor Expertise

IaC Fluency

Network Security

Linux Admin

Python

Bash

CI/CD

Git

Documentation

Tools

Proxmox VE

KVM/QEMU

VMware ESXi

Terraform

Ansible

Packer

Git

CI/CD tooling

Observability/SIEM Stack

VPNs

Job description

Jobtailor is seeking a Senior Platform Engineer to build and scale a secure in-house infrastructure for a high-assurance environment. You will design and operate virtualization, networking, identity, and monitoring stacks, standing infrastructure up from bare metal and automating end-to-end while maintaining documentation and auditability.

The role requires deep hypervisor expertise, strong security skills, and fluency in IaC, Python, and Bash to deliver production-ready platforms with robust