Technology System Administrator

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. 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.

• 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

• 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
• Experience with patching, monitoring, and vulnerability mitigation
• Familiarity with backup and recovery solutions
• Understanding of storage (SAN/NAS) and DNS/DHCP
• Scripting experience (Power Shell, Bash, or Python)
• Working knowledge of ITIL processes

• 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

• 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.

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. Family and Medical Leave Act (FMLA) Poster | U.S. Department of Labor Family and Medical Leave Act Poster Employee Polygraph Protection Act (EPPA) Poster | U.S. Department of Labor ERD-10861 Poster Honesty Testing poster WISCONSIN FAIR EMPLOYMENT LAW