Enterprise System Administrator

Seneca Resources; Arlington (VA); On-site; USD 90,000 - 120,000; Full time

Job summary

A leading IT services firm in Arlington, VA, is seeking a Senior Systems Administrator to manage SolarWinds and ensure compliance across Windows and Linux servers. The role requires a thorough understanding of security protocols, systems documentation, and the ability to troubleshoot complex issues efficiently. Candidates must communicate effectively, support junior staff, and maintain system readiness for mission-critical operations. This is a long-term contract position with a focus on security and system integrity.

Qualifications

• Solid understanding of Server Admin Risk Management Framework (RMF) requirements.
• Experience with vulnerability scans, patching cycles, and security audits.
• Ability to articulate issues clearly and document configuration changes.

Responsibilities

• Handle maintenance of Solaris environments supporting the Marine Corps.
• Respond to system alerts and troubleshoot issues quickly.
• Coordinate with junior team members and support them in their roles.

Skills

SolarWinds

Remedy

Windows Administration

Linux Administration

Networking fundamentals (TCP/IP, routing, VLANs, firewalls)

Tools

VMware

Job description

Location: Arlington, VA

Clearance Requirements: Secret

Position Status: Long Term Contract

Required Skills/Education: SolarWinds, Remedy, Windows or Linux Administration

Enterprise Monitoring handles Windows Servers 2022 and Linux Ubuntu servers for the Marine Corps, and a big part of that is taking care of our SolarWinds servers. We keep the monitoring system running so we can see what’s going on across the network, what’s up, what’s down, what’s slow, and what needs attention before it becomes a problem.

Most of the time we’re checking alerts, fixing whatever SolarWinds decides to break that day, updating it, dealing with modules that don’t want to cooperate, and making sure it’s pulling in the right data from all the different devices and working with the DB team. When something goes wrong on the network, SolarWinds is usually the first place they will look, so it must stay healthy. If something crashes, we need to be able to bring it back fast, especially if it supports a mission. So, a big part of the job is keeping our SolarWinds servers up and running. Virtualization is a big part of the job too. We use VMware, so we make sure everything stays stable. Same goes for storage, backups, and disaster recovery plans. If something goes down, we need to be able to bring it back fast.

We work across the different networks NIPR and SIPR, so security is a constant thing. There’s always another STIG to apply, another scan to clear, or another patch that needs to go out before someone starts asking questions.

On top of the technical stuff, I help the team and show them how things work and try to make sure they’re ready when I’m not around.

• A solid senior admin should be comfortable with:Understand Server Admin Risk Management Framework (RMF) requirements
• Understand vulnerability scans, patching cycles, and security audits.
• Locking down systems without breaking everything
• Documentation and Updates
• Maintain diagrams or notes others can use
• Networking fundamentals (TCP/IP, routing, VLANs, firewalls)
• Report issues
• Maintain security compliance
• Senior admin should be able to:Work with vCenter
• Maintain VMs, storage, clusters, snapshots, and resource balancing
• Enough background to anticipate problems before they hit
• Knows how to isolate a problem and troubleshoot
• Remedy
• Can fix things fast or at least stabilize them
• Communicates clearly and explain things in plain English
• Support junior team members
• Applying STIGs
• Fixing ACAS findings
• Documenting configuration changes
• Making sure logs, auditing, and access controls are set up
• Working with cybersecurity teams during assessments
• Keeping everything compliant so the system keeps its ATO
• If a server dies, they should know:What the backup plan is
• How to restore quickly
• How to prevent the same issue from happening again
• Troubleshooting & Tier 3/4 SupportResolve complex server, network, and application issues.
• Provide senior level escalation support to communications with the Government, Vendor, and Battle Captain.
• Monitor system performance, capacity, and availability across distributed environments.
• Ensure server infrastructure meets mission readiness standards.
• Support communications and IT operations during exercises, deployments, and contingency missions.