Senior Systems Engineer — Federal Onsite (DC)

Harmonia Holdings Group, LLC; McLean (VA); On-site; USD 150,000 - 180,000; Full time

Benefits offered by this job

Traditional health insurance

Dental and vision insurance

STD/LTD/Life insurance

401(k) company match

Flexible schedules

Paid holidays and PTO

Parental Leave

Professional development

Team events

Job summary

Revolutional in Washington, DC is seeking a Senior Systems Engineer to manage, optimize, and secure enterprise infrastructure at the Dept of State. This role requires hands-on expertise with Windows Server, Active Directory, and virtualization, with a focus on automation and cloud adoption in a secure, on-site environment.

You will architect, deploy, and manage Windows/AD services, virtualization, PKI, and PKI lifecycle, while ensuring compliance with STIG/NIST in federal settings.

Qualifications

• Active Top Secret with SCI (active or cross-over-eligible).
• Bachelor's in computer science, Information Technology, or related field — or equivalent practical experience.
• 10+ years Server administration
• Proficiency in PowerShell for complex administration, reporting, and automation.
• Extensive experience with virtualization platforms (ESXi, Hyper‑V, or KVM), including Horizon Remote Assistance.
• Experience with VDI deployments.
• Hands‑on experience with Solarwinds for enterprise IT infrastructure and environment monitoring.
• Experience with Active Directory in production environments.

Responsibilities

• Own Windows Server/Active Directory (AD) Services (GPO, DNS/DHCP, OU design, patching, monitoring) across production enclaves, ensuring high availability and optimal performance.
• Design, implement, and manage enterprise virtualization platforms, primarily using VMware ESXi, for maximum efficiency and resource utilization.
• Automate infrastructure deployment, configuration, and maintenance at scale using PowerShell and other scripting languages (e.g., Python), focusing on IaC (Infrastructure as Code) principles.
• Architect, deploy, and manage Public Key Infrastructure (PKI) solutions and oversee certificate/TLS lifecycle management across the enterprise.
• Perform complex, end-to-end troubleshooting of infrastructure issues, covering networking (TCP/IP, routing, load balancing), identity (Kerberos/LDAP), and application integration.
• Document runbooks, SOPs, and change procedures; participate in scheduled change windows and on‑call rotation.
• Contribute to cloud strategy and migration efforts by providing technical expertise for AWS and/or Azure platform integration.
• Ensure systems adhere to stringent security requirements (e.g., STIG/RMF/NIST), especially within federal or classified environments.

Skills

PowerShell

Active Directory

Windows Server

Troubleshooting

Networking

Security/Compliance

Automation

Cloud (AWS/Azure)

Education

Bachelor's in Computer Science / IT or related field

Tools

VMware ESXi

Hyper-V

KVM

Horizon Remote Assistance

VDI

SolarWinds

DNS/DHCP

Job description

Revolutional in Washington, DC is seeking a Senior Systems Engineer to manage, optimize, and secure enterprise infrastructure at the Dept of State. This role requires hands-on expertise with Windows Server, Active Directory, and virtualization, with a focus on automation and cloud adoption in a secure, on-site environment.

You will architect, deploy, and manage Windows/AD services, virtualization, PKI, and PKI lifecycle, while ensuring compliance with STIG/NIST in federal settings.