Summary of Responsibilities:

Help Keep Critical Infrastructure Secure, Stable, and Always On
At ATC, our technology systems power the reliability of the grid and the communities we serve. We’re looking for a Technology System Administrator who thrives in structured, mission-critical environments and takes pride in ensuring systems are secure, reliable, and highly available.

If you’re someone who owns outcomes, stays calm under pressure, and enjoys improving how systems run, we’d love to connect.

This role requires on-call rotation and you must live in or be willing to relocate to Wisconsin within two hours of an ATC control center, which are located in Pewaukee and Cottage Grove. This role is not available for remote work.

Essential Responsibilities:

What You’ll Do

Own the availability and performance of Technology Operations applications and services
Troubleshoot and resolve incidents, outages, and system issues
Collaborate across teams to mitigate risks identified in Lessons Learned and Problem Review events
Execute and validate backup and recovery processes
Maintain system security through patching, hardening, and vulnerability remediation
Support go-live readiness and production deployments
Participate in on-call rotations and incident response
Identify opportunities to automate processes and improve operational efficiency

What You’ll Bring

Associate’s degree or higher in a related field
3+ years of system administration experience
Experience with monitoring, patching, and backup management
Familiarity with compliance requirements
Experience with Windows and/or Linux system administration
Knowledge of Active Directory and Entra ID
Experience with patching, monitoring, and vulnerability mitigation
Familiarity with backup and recovery solutions
Understanding of storage (SAN/NAS) and DNS/DHCP
Scripting experience (PowerShell, Bash, or Python)
Working knowledge of ITIL processes

What Sets You Apart

Experience in regulated environments
Experience with patching and/or firmware upgrades
Familiarity with NERC CIP or compliance frameworks
Cloud, virtualization, or hybrid exposure
Experience with VDI and load balancing
Strong security focus
Strong internal customer focus
Experience with improving work processes including automation

Why ATC

Work on mission-critical infrastructure
Collaborative and purpose-driven team
Direct impact on reliability and performance
Opportunities to grow in a high-availability environment

The targeted base pay for this position is $83,200 to $97,100 annually.* Base pay is one component of our comprehensive total rewards package which includes an annual incentive bonus, employer-sponsored pension plan, 401(k) match, HSA contribution, life & disability insurance, health care benefits, generous time off plans, flexible work arrangements, and much more.

*The pay range is a general guideline. Employment offers are evaluated individually and consider qualifications, experience, academic achievements, internal equity, and business needs. Pay exceeding the posted range is considered for uniquely qualified candidates. Interested internal candidates, with questions, please consult your Human Resources Business Partner.

Number of Openings Available:

Posting Date:

2026-06-12

Time Type:

Full time

Equal Opportunity Employer:

Applicants have rights under employment laws.

ATC is an equal opportunity employer that seeks to foster diverse teams of talented people working safely together. We respect and embrace diversity of all aspects and hire, train and promote employees without regard to race, color, religion, sex, age, national origin, sexual orientation, disability, genetics, protected veteran status, or any other characteristic protected by law. We encourage women, minorities, veterans and individuals with a disability to apply. All qualified applicants will receive consideration for employment without regard to any characteristic protected by law.

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