IT Systems Administrator

Onni Group of Companies•Chicago, IL

22d•$85,000 - $100,000

About The Position

We are hiring an IT Systems Administrator (Tier 2) to deliver high-quality technical support for internal users and managed services clients. You will handle escalations from Tier 1, own tickets through resolution, and collaborate with Tier 3, Centralized Services, and Monitoring teams.

Requirements

Diploma or Bachelor's degree in Information Technology, Computer Science, or a related field (e.g., Systems Administration, Networking) from an accredited institution.
4–7 years in IT support (MSP experience preferred) with proven Tier 2 troubleshooting capability.
Strong knowledge of Windows 10/11, Microsoft 365, AD/Entra ID identity concepts, and network fundamentals (DNS/DHCP/VPN/Wi-Fi).
Strong problem-solving skills with an analytical and detail-oriented mindset.
Strong communication and customer service skills; able to set expectations and follow through.
Strong task, time-management, and organizational skills, with the ability to multitask and adapt in a fast-paced, high-pressure environment.
Strong interpersonal skills; comfortable working with diverse clients, users, and handling challenging situations professionally.
Ability to prioritize and manage multiple tickets in an SLA-driven environment.
A self-starter able to work well with minimal supervision and in a team environment.

Nice To Haves

Experience with Halo PSA (or similar PSA/RMM tools), endpoint security/EDR, and backup platforms.
Certifications (optional): CompTIA A+/Network+, Microsoft, or relevant vendor certifications.

Responsibilities

Resolve Tier 1&2 incidents and requests end-to-end (ownership, communication, documentation).
Troubleshoot Windows 10/11 and macOS endpoints, laptops, peripherals, printers, common business applications, and remote access tools.
Microsoft 365 support: Exchange Online basics (mail flow checks, shared mailboxes, permissions), Teams troubleshooting, SharePoint/OneDrive sync and access issues, licensing/user administration.
Identity support: Active Directory and Entra ID fundamentals (account lockouts, group membership, access issues, MFA resets, sign-in troubleshooting; conditional access awareness); user account creation, updates, onboarding/offboarding, and decommissioning.
Network troubleshooting: DNS/DHCP, VPN, firewalls, switches, Wi-Fi connectivity, VoIP phone systems, basic routing/switching concepts; escalate complex network issues appropriately.
Server troubleshooting (basic–intermediate): Windows Server services and event logs, file/print access, patching impacts; basic virtualization awareness and escalation readiness.
Support mobile devices (phones and tablets): setup, provisioning, configuration, data transfers, and decommissioning.
Support boardroom and meeting room equipment: video conferencing hardware/software, TVs, projectors, and audio systems.
Support/troubleshoot IP-based and non-traditional IT systems (e.g., IP cameras/CCTV/NVR access and connectivity, building access control systems/cards/fobs, building automation and audio systems, timecard systems, EV systems, digital signage, PoE basics) and coordinate vendor/Tier 3 escalations when needed.
Monitor and manage system alerts, including outage/offline events across servers, network, software, hardware, and cybersecurity.
Act as vendor coordination and liaison point for vendor-specific issues or requests.
Maintain strong ticket hygiene in the PSA: accurate notes, time entries, troubleshooting steps, and closure summaries.
Contribute to KB/SOP documentation and help reduce repeat issues.
Provide friendly, clear, concise, and professional customer service via phone, email, chat, or video call, and follow up to ensure incidents and requests are fully resolved.
Participate in after-hours or on-call support rotations as assigned, in accordance with company policies and applicable employment standards.