Hybrid Windows Systems Admin - SQL Server & Infra

Seneca Resources Company, LLC; New York (NY); Hybrid; USD 96,000 - 110,000; Full time

Job summary

Seneca Resources Company, LLC in Bronx, NY seeks a Senior Windows Systems Administrator to support, secure, and optimize Windows-based infrastructure and SQL Server environments.

This hands-on role focuses on Windows Server, Active Directory, SQL Server, PowerShell, virtualization, backup/recovery, and enterprise security. The successful candidate collaborates across teams to ensure high availability and security.

Qualifications

• 5–7+ years of Windows Systems Administration experience within mid-size to large enterprise environments.
• Strong hands-on experience with Windows Server 2016, 2019, and/or 2022.
• Strong experience with Active Directory, Group Policy, DNS, DHCP, and Windows patching.
• Strong Microsoft SQL Server experience, including installation, configuration, maintenance, scripting, and performance tuning.
• Proficiency with PowerShell scripting and automation.
• Strong familiarity with virtualization technologies such as VMware, Hyper‑V, and Nutanix.
• Experience implementing and supporting backup/recovery solutions and disaster recovery processes.
• Understanding of networking fundamentals including TCP/IP, firewalls, and VPNs.
• Experience with system hardening, vulnerability remediation, and infrastructure security best practices.
• Strong troubleshooting, analytical, and problem‑solving capabilities.
• Strong written and verbal communication skills with the ability to work effectively across technical teams, customers, and management.
• Detail‑oriented approach with a strong focus on customer outcomes and system reliability.

Responsibilities

• Administer, maintain, monitor, and optimize Windows Server environments.
• Manage Active Directory, Group Policy, DNS, DHCP, and Windows patching.
• Monitor system health, availability, capacity, and performance.
• Troubleshoot complex hardware, operating system, software, connectivity, and infrastructure issues.
• Perform system configuration, maintenance, upgrades, and ongoing operational support.
• Install, configure, maintain, and support Microsoft SQL Server environments.
• Monitor and troubleshoot database availability and performance.
• Write and optimize SQL queries and scripts supporting administration and automation.
• Partner with application and development teams to resolve SQL-related issues.
• Develop and maintain PowerShell scripts to automate system tasks.
• Identify opportunities to reduce repetitive manual processes through scripting.
• Support standardized infrastructure-management practices.
• Support enterprise virtualization technologies and cross-team issue resolution.
• Implement, maintain, and support backup and disaster recovery solutions.
• Support patching, remediation, access controls, and security-related changes.
• Collaborate with cybersecurity and infrastructure teams to address vulnerabilities.
• Produce and maintain documentation covering configurations, procedures, and change controls.

Skills

Windows Server

Active Directory

DNS & DHCP

PowerShell

SQL Server

Virtualization

Backup & Recovery

Security

Networking basics

Communication

Education

Bachelor's degree

Tools

VMware

Hyper-V

Nutanix

Job description

Seneca Resources Company, LLC in Bronx, NY seeks a Senior Windows Systems Administrator to support, secure, and optimize Windows-based infrastructure and SQL Server environments.

This hands-on role focuses on Windows Server, Active Directory, SQL Server, PowerShell, virtualization, backup/recovery, and enterprise security. The successful candidate collaborates across teams to ensure high availability and security.