Sr. Systems Administrator

Seneca Resources; Washington (District of Columbia); On-site; USD 117,000 - 143,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

401(k) retirement plan

Paid time off

Paid parental leave

Life and disability insurance

Flexible spending accounts

Commuter benefits

Tuition reimbursement

Job summary

Seneca Resources seeks a Senior Systems Administrator with an active Top Secret clearance to manage and maintain enterprise IT environments in Washington, DC. The role requires hands-on expertise with VMware, SAN storage, Windows Server, cloud integrations, and security tooling, ensuring secure operations.

You will work as the sole Systems Administrator, coordinating with network admins and government counterparts to ensure performance and compliance, while documenting procedures for continuous

Qualifications

• 6+ years of systems engineering/administration experience.
• Ability to work independently as the sole Systems Administrator.
• Experience with VMware, SAN storage, Windows Server, AWS, PowerShell/PowerCLI, and security tools.

Responsibilities

• Deploy, configure, and troubleshoot VMware vSphere/ESXi hosts.
• Manage Dell VNXE/Dell EMC SAN storage and Veeam backups.
• Maintain domain controllers, MFA, Windows Server, SCCM, and security tooling.
• Support cloud integrations (AWS) and document processes for continuous improvement.

Skills

Independent work ethic

Self-starter

Collaboration with government and IT

Six+ years experience

PowerShell / PowerCLI

Tools

VMware vSphere

ESXi

Dell VNXE

Dell EMC storage

Veeam backup

Windows Server

SCCM

AWS

PowerShell

PowerCLI

DNS

DHCP

LDAP

Job description

Position Title: Senior Systems Administrator

Location: Washington, DC

Clearance Requirements: Active Top Secret

We are seeking an experienced Senior Systems Analyst with an active Top-Secret security clearance to support mission-critical operations in Washington, DC. This role involves managing and maintaining complex enterprise IT environments, including VMware, Microsoft Servers, storage solutions, cloud integrations, and security protocols. The ideal candidate will work independently as the sole Systems Administrator, collaborating with network admins and government counterparts to ensure seamless system performance, security compliance, and operational efficiency. Responsibilities include deploying, configuring, and troubleshooting VMware vSphere, SANs, Windows Server environments, and supporting cloud and security tools. This is a dynamic role requiring proactive problem-solving, documentation, and continuous improvement to meet rigorous security standards and operational demands.

Top Requirements

• Demonstrated experience in VMware tools such as vSphere, ESXi hosts; ability to fully manage and implement Virtual Machines independently.
• Proven experience managing Storage Area Networks (SAN) like Dell VNXE, Dell EMC, and Veeam backup solutions.
• Extensive knowledge of configuring and managing domain controllers, multi-factor authentication (MFA), Symantec Endpoint Protection, Windows Server 2016, WSUS, and SCCM.
• Four days onsite per week in Washington, DC, with flexible telework days excluding Friday.
• Strong independent work ethic, self-starter, capable of collaborating effectively with government and network teams.
• Minimum of 6 years of systems engineering or administration experience, or equivalent combination of education and experience.
• Experience with cloud services such as AWS and proficiency in scripting languages like PowerShell and PowerCLI.
• Solid understanding of network protocols including DNS, DHCP, LDAP, HTTP/HTTPS, and TCP/IP.

Salary Range

Upto $130K + Benefits (Benefits include medical, dental, and vision insurance, 401(k) retirement plan, paid time off, paid parental leave, life and disability insurance, flexible spending accounts, commuter benefits and tuition reimbursement.)

About Seneca Resources

At Seneca Resources, we are more than just a staffing and consulting firm; we are a trusted career partner. With offices across the U.S. and clients ranging from Fortune 500 companies to government organizations, we provide opportunities that help professionals grow their careers while making a meaningful impact.

When you work with Seneca, you’re choosing a company that invests in your success, celebrates your achievements, and connects you to rewarding work with leading organizations nationwide. We offer competitive pay, comprehensive health, dental, and vision coverage, 401(k) plans, and dedicated support to advocate for your growth and success.

Seneca Resources is proud to be an Equal Opportunity Employer, committed to fostering diversity and inclusion in the workplace.