Demo

Senior System Administrator

ACT Professional Solutions
Paramus, NJ Contractor
POSTED ON 11/18/2025
AVAILABLE BEFORE 12/17/2025

This is a 6 month temp to perm

Position Overview

The Senior Systems Administrator I plays a vital role within the IT team, ensuring the reliability, security, and optimal performance of the organization's technology infrastructure. This position involves close collaboration with IT leadership to design, implement, and maintain systems while providing expert technical support for end users. The ideal candidate will demonstrate initiative, independent problem-solving skills, and a strong commitment to delivering exceptional customer service in a dynamic work environment. In addition to core systems administration duties, this role encompasses responsibilities related to desktop and user support, network administration, and IT security.


Key Responsibilities:

  • Work collaboratively with IT leadership to monitor, maintain, and test technology infrastructure to ensure reliability and functionality.
  • Lead the technical design, planning, and implementation of systems, including performance tuning and recovery procedures.
  • Provide advanced support for endpoint systems, software, and related technologies, including troubleshooting, installation, inventory management, and testing.
  • Deliver outstanding customer service to end users by resolving technical issues promptly, courteously, and effectively.
  • Serve as a subject matter expert in SharePoint Online, supporting its deployment, administration, and optimization for business needs.
  • Implement and maintain IT projects, such as server, virtual machine, network switches, firewalls, access points, and printer deployments/management.
  • Diagnose and replace failed infrastructure hardware, and create standard images for servers and client devices to streamline deployment.
  • Oversee asset inventory management, ensuring IT device records are accurate and up to date.
  • Liaise with internal and external stakeholders to facilitate the completion of IT projects.
  • Perform systems administration tasks, including equipment setup, file restoration testing, backup creation and monitoring, and Microsoft 365 administration.
  • Execute vulnerability remediation, monitor network devices, perform configuration backups, apply firmware upgrades, and implement endpoint and network security measures.
  • Apply system updates, patches, and configuration changes as necessary.
  • Recommend and implement productivity enhancements and best practices for IT security.
  • Deploy hardware and software as requested, and maintain comprehensive documentation for procedures and helpdesk tickets.
  • Independently prioritize tasks in alignment with organizational objectives.
  • Manage Active Directory accounts, permissions, access requests, and password resets.
  • Serve as the primary backup to the Senior IT Director for essential systems.
  • Monitor Office 365, EDR (Endpoint Detection and Response), and Entra ID for security issues, investigate incidents, and conduct root cause analysis.
  • Support disaster recovery and business continuity planning, testing, and implementation.
  • Assist with internal compliance initiatives and change management procedures.
  • Log infrastructure-related tasks and gather user feedback to drive continuous improvement.
  • Analyze the technology stack for potential enhancements and monitor wired and wireless network infrastructure.



  • Provide technical support for desktop hardware and software, including troubleshooting, remote and in-person assistance, and helpdesk management.
  • Coordinate IT inventory purchases and support conference room equipment.
  • Oversee onboarding and offboarding processes for IT systems.



Required Qualifications:

  • Bachelor’s degree in an IT-related field or equivalent industry experience.
  • Professional certifications such as Microsoft 365 Administration, Network /CCNA or equivalent, Linux /LPIC-1, Security or equivalent.
  • Demonstrated expertise in SharePoint Online administration and support.
  • Proven track record of excellent customer service in a technical support environment.
  • Proficiency with hardware including desktops, laptops, servers, NAS/SAN, printers, switches, firewalls, mobile devices, DVRs, projectors, time clocks, and wireless access points.
  • Experience with applications such as Office 365, Adobe Acrobat, Active Directory/DNS/DHCP, remote management tools, VPN, helpdesk software, endpoint protection, backup applications, VOIP, WSUS, patch management software, Dropbox, and Box.
  • Familiarity with operating systems, including Windows 10/11, Server 2016/2019/2022, Synology DSM, and Ubuntu Linux.
  • Knowledge of virtualization platforms, disaster recovery, and business continuity.
  • Effective written and verbal communication skills.
  • Strong prioritization, project management, and problem-solving abilities.
  • Experience with NIST 800-53 controls, vulnerability remediation, AWS, and SonicWall.

Salary : $55 - $65

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