Windows Systems Administrator – SQL Server & Infrastructure
4 days ago
Staten Island
Job title: Windows Systems Administrator – SQL Server & Infrastructure Location: Bronx, New York - Onsite Rate: $70/hour on W2 Type: Contract Must: In-person interview and 8+ years of experience This role is ideal for a hands-on infrastructure professional with strong experience administering Windows Server, Active Directory, SQL Server, PowerShell, virtualization, backup/recovery, and enterprise security. The individual will be responsible for maintaining reliable and secure systems while troubleshooting complex technical issues, improving system performance, supporting disaster recovery, and automating administrative activities. The successful candidate will work closely with customers, application and development teams, adjacent infrastructure groups, and IT leadership to resolve issues and ensure systems remain available, secure, and aligned with business requirements. Key Responsibilities Windows Systems Administration • Administer, maintain, monitor, and optimize Windows Server 2016/2019/2022 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. Security & Vulnerability Management • Apply Windows infrastructure security best practices, including system hardening and vulnerability management., • Support patching, remediation, access controls, and security-related system changes., • Partner with cybersecurity and infrastructure teams to address vulnerabilities and maintain secure system configurations. Customer Support & Operational Excellence • Work directly with customers and technical stakeholders to investigate and resolve system issues., • Communicate effectively with technical teams, customers, and all levels of management., • Maintain a strong customer-outcome focus while balancing system reliability, security, and operational requirements., • Support structured change-management processes and IT operational best practices., • Produce and maintain documentation covering system configurations, procedures, troubleshooting, and change controls. Required Qualifications • 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. 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. Seneca consultants and contractors enjoy competitive compensation, comprehensive health, dental, and vision benefits, 401(k) retirement plans, and the support of a dedicated team that advocates every step of the way. Seneca Resources is proud to be an Equal Opportunity Employer, committed to building a diverse and inclusive workforce where all qualified individuals are encouraged to apply.