Job Specifications
Position Title: Senior Windows Systems Administrator
Location: Bronx, NY (Hybrid)
Clearance Requirements: None
Position Status: Contract
Pay Rate: 65/hr on W2
Position Description:
We are seeking a Senior Windows Systems Administrator to support and optimize enterprise Windows environments in a hybrid setting. This role is ideal for a hands-on infrastructure professional with strong experience in Windows Server administration, Active Directory, PowerShell automation, virtualization, and SQL Server support.
The successful candidate will play a key role in maintaining system stability, improving performance, enhancing security, and supporting business-critical applications in a mid-to-large-scale environment.
Key Responsibilities:
Windows Systems Administration
Administer, maintain, and optimize Windows Server environments (2016, 2019, 2022)
Manage Active Directory, Group Policy, DNS, DHCP, and Windows patching
Monitor system health and performance; troubleshoot OS, hardware, and software issues
Implement backup, recovery, and disaster recovery solutions
Apply system hardening, security best practices, and vulnerability remediation
SQL Server Support
Install, configure, and maintain Microsoft SQL Server environments
Develop and optimize SQL queries and scripts for reporting and automation
Perform basic performance tuning, maintenance, and troubleshooting
Partner with application and development teams to ensure system reliability and compatibility
Automation & Virtualization
Design and maintain PowerShell scripts to automate administrative tasks
Support virtualized environments using VMware, Hyper-V, and/or Nutanix
Assist with system provisioning, capacity planning, and resource optimization
Operations, Collaboration & Documentation
Collaborate with customers, technical teams, and leadership to resolve system issues
Follow ITIL-aligned processes for incident, change, and problem management
Create and maintain technical documentation, including:
System configurations
Procedures and runbooks
Change and operational standards
Participate in maintenance windows and operational support activities as required
Required Skills / Education:
5–7 years of experience as a Windows Systems Administrator in mid to large-scale environments
Strong hands-on experience with:
Windows Server administration
Active Directory, Group Policy, DNS, DHCP
Microsoft SQL Server (installation, maintenance, scripting, basic performance tuning)
Proficiency with PowerShell scripting and automation
Experience supporting virtualized environments (VMware, Hyper-V, Nutanix)
Solid understanding of networking fundamentals (TCP/IP, firewalls, VPNs)
Strong troubleshooting, analytical, and problem-solving skills
Excellent written and verbal communication skills
Detail-oriented with a strong focus on service quality and customer outcomes
Preferred Qualifications
Knowledge of ITIL practices and formal change management
Experience supporting enterprise or regulated environments
Prior experience in a contract or consulting-based IT role
Preferred Certifications
Microsoft Certified: Windows Hybrid Server Administrator
Microsoft Certified: Administrator Associate
CompTIA Security+ or equivalent
Preferred Education
Bachelor’s degree in Computer Science, Information Technology, or a related field
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 an impact.
When you work with Seneca, you’re choosing a company that invests in your success, celebrates your achievements, and connects you to meaningful work with leading organizations nationwide. Our consultants and contractors enjoy competitive pay, comprehensive health, dental, and vision coverage, 401(k) retirement plans, and the support of a dedicated team who will advocate for you every step of the way.
Seneca Resources is proud to be an Equal Opportunity Employer, committed to fostering a diverse and inclusive workplace where all qualified individuals are encouraged to apply.