Senior IT/OT System Administrator – 24x7 NOC

Invenergy; Chicago (IL); Hybrid; USD 88,000 - 108,000; Full time

Benefits offered by this job

Annual bonus 20–30%

Medical insurance

401k

Paid time off

Job summary

Invenergy, headquartered in Chicago, seeks a System Administrator to operate in a Windows-based IT/OT environment and serve as the final escalation point for the Service Desk. The role supports 24x7 operations, after-hours monitoring, and on-call rotation to ensure system availability across enterprise sites.

Responsibilities include resolving complex IT/OT incidents, coordinating with cross-functional teams, and contributing to change management and knowledgebase development.

Qualifications

• Bachelor’s Degree in Information Technology, Computer Science, or related field required.
• Three (3+) years of experience supporting enterprise IT environments or Service Desk operations.
• Strong experience with Microsoft environments including Microsoft 365, server and workstation operating systems.
• Experience with incident management, escalation, and troubleshooting complex issues.
• Strong analytical, troubleshooting, and leadership skills.
• Excellent communication and customer service skills.
• Eligible to work in the United States without employer visa sponsorship now or in the future.

Responsibilities

• Serve as the final escalation point for Service Desk incidents and support requests.
• Own and resolve complex IT and OT issues across control center and remote sites.
• Monitor and manage assigned tickets, ensuring timely resolution and escalation.
• Collaborate with server, network, security, and application teams to resolve issues.
• Participate in IT change management processes and system improvements.
• Identify trends in support issues and recommend long-term solutions.
• Maintain documentation and support knowledgebase development.
• Support 24x7 monitoring of IT and OT systems, including control center operations.
• Respond to system alerts, outages, and critical incidents during after-hours periods.
• Initiate incident response efforts including triage, escalation, and coordination.
• Participate in two-person incident response model when severity triggers are met.
• Engage and coordinate with primary and secondary on-call resources.
• Ensure system stability and monitoring continuity during incidents.
• Perform structured handoffs between shifts to maintain operational continuity.

Skills

Microsoft 365

Windows Server/Workstations

Incident management

Customer service

Leadership

Education

Bachelor's Degree in IT/CS

Tools

Microsoft 365

Windows Server

Windows OS

Job description

Invenergy, headquartered in Chicago, seeks a System Administrator to operate in a Windows-based IT/OT environment and serve as the final escalation point for the Service Desk. The role supports 24x7 operations, after-hours monitoring, and on-call rotation to ensure system availability across enterprise sites.

Responsibilities include resolving complex IT/OT incidents, coordinating with cross-functional teams, and contributing to change management and knowledgebase development.