Senior System Engineer – DoD Security & Infra (On‑Site)

JFL CONSULTING, LLC; Springfield (VA); On-site; USD 155,000 - 175,000; Full time

Benefits offered by this job

Salary: $155k-$175k

100% employer-paid medical, dental, VZ

Flexible Spending Accounts

Life insurance & disability

401(k) with employer contributions

Generous PTO

Certification reimbursement

Job summary

JFL Consulting, LLC is seeking a System Engineer to lead and support site configurations in secure government environments in Springfield, VA. The role emphasizes configuring, deploying, and optimizing Linux and Windows systems on-site with strong DoD cybersecurity alignment.

Candidates should have 5+ years in a systems role, hands-on virtualization (ESXi/Hyper-V/Proxmox), scripting (Python/Bash/PowerShell), and DoD 8140/8570 IAT II certs. Up to 10-20% CONUS travel.

Qualifications

• 5+ years in a systems engineering or infrastructure role.
• Experience with Active Directory, DNS, SSO, and authentication protocols.
• Hands-on experience with virtualization platforms (ESXi, Hyper-V, or Proxmox).
• Experience with cloud platforms (AWS, Azure, or GCP desirable).

Responsibilities

• Perform on-site configuration of servers, storage, and networking hardware in secure environments.
• Install, cable, and maintain rack-mounted hardware, including power and cooling components.
• Deploy, configure, and support infrastructure for Linux and Windows systems.
• Build and administer virtualized environments using Proxmox, VMware ESXi, and Hyper-V.
• Apply system hardening, OS patching, logging, and backup strategies across physical and virtual systems.
• Implement network monitoring tools and ensure DoD RMF/STIG alignment.
• Automate configuration tasks and deployments using Bash, Python, or PowerShell.
• Maintain documentation and participate in audits and compliance.

Skills

System administration

Active Directory

DNS

SSO

virtualization ESXi

Hyper-V

Proxmox

Python/Bash/PowerShell

RMF/STIGs

DoD 8140/8570 IAT II

Cloud platforms (AWS/Azure/GCP)

Networking basics

Education

Bachelor's or Master's degree

Tools

VMware ESXi

Hyper-V

Proxmox

Ansible

Job description

JFL Consulting, LLC is seeking a System Engineer to lead and support site configurations in secure government environments in Springfield, VA. The role emphasizes configuring, deploying, and optimizing Linux and Windows systems on-site with strong DoD cybersecurity alignment.

Candidates should have 5+ years in a systems role, hands-on virtualization (ESXi/Hyper-V/Proxmox), scripting (Python/Bash/PowerShell), and DoD 8140/8570 IAT II certs. Up to 10-20% CONUS travel.