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Senior System Administrator Jobs in Wisconsin (NOW HIRING)

Tusker

Senior NetSuite Administrator

Green Bay, WI · On-site

$70K/yr

The Sr. NetSuite Administrator will be responsible for developing customizations, scripts and ... This position will work closely with the VP of Internal Business Systems to create customizations ...

MLG Capital

Senior IT Administrator

Brookfield, WI · On-site

$80K - $109K/yr

Key Responsibilities Systems Administration & Engineering * Serve as the primary administrator for ... Partner with senior leadership and Impact VCIO's to build an IT roadmap that supports business ...

MLG Capital

Senior IT Administrator

Brookfield, WI

$80K - $109K/yr

Key Responsibilities Systems Administration & Engineering * Serve as the primary administrator for ... Partner with senior leadership and Impact VCIO's to build an IT roadmap that supports business ...

Permian Resources, LLC

WI · On-site

$120 - $140/hr

R-100336** **Permian Resources (NYSE: PR) is currently seeking a Senior Cloud Administrator ... Demonstrates a strong understanding of system architecture and interdependencies.* Maintain and ...

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All JobsSystem Administrator JobsSenior System Administrator JobsSenior System Administrator Jobs in Wisconsin

Senior System Administrator information

See Wisconsin salary details

$49.5K

$103.2K

$144.8K

How much do senior system administrator jobs pay per year?

As of Aug 29, 2026, the average yearly pay for senior system administrator in Wisconsin is $103,186.00, according to ZipRecruiter salary data. Most workers in this role earn between $86,800.00 and $117,600.00 per year, depending on experience, location, and employer.

What does a senior system administrator do?

A Senior System Administrator is responsible for managing, maintaining, and securing an organization's IT infrastructure, including servers, networks, and related systems. They oversee the installation and configuration of hardware and software, troubleshoot complex technical issues, and ensure the reliability and performance of IT services. Senior System Administrators also implement security policies, perform regular system updates, and may supervise junior IT staff. Their expertise is essential for minimizing system downtime and protecting data integrity.

What are the key skills and qualifications needed to thrive as a senior system administrator, and why are they important?

To thrive as a Senior System Administrator, you need in-depth knowledge of operating systems, networking, security protocols, and significant experience managing IT infrastructure, usually backed by a degree in computer science or related certifications (such as CompTIA, Microsoft, or Cisco). Expertise with tools like VMware, Active Directory, PowerShell, and cloud platforms (AWS, Azure) is typically required. Strong problem-solving skills, attention to detail, and effective communication are crucial soft skills for this role. These abilities ensure reliable system performance, minimize downtime, and support the technology needs of an organization.

What are some common challenges a senior system administrator may encounter when managing hybrid cloud environments?

Senior System Administrators often face challenges balancing on-premises infrastructure with cloud-based resources, which can include ensuring consistent security policies, managing data synchronization, and monitoring system performance across multiple platforms. They must also stay updated on evolving technologies and compliance requirements, as well as collaborate closely with development, security, and networking teams. Addressing these complexities requires strong problem-solving skills, robust documentation practices, and a proactive approach to both troubleshooting and automation.

What is the difference between Senior System Administrator vs Network Administrator?

AspectSenior System AdministratorNetwork Administrator
CertificationsCompTIA Server+, Microsoft Certified: Windows Server, Cisco CCNACompTIA Network+, Cisco CCNA, Cisco CCNP
Work EnvironmentData centers, enterprise IT environments, server managementNetwork infrastructure, routing, switching, network security
ResponsibilitiesServer deployment, maintenance, troubleshooting, system upgradesNetwork setup, monitoring, troubleshooting, security management

While both roles require networking and system knowledge, Senior System Administrators focus on server and system management, whereas Network Administrators specialize in network infrastructure. Both roles are essential in enterprise IT, often collaborating to ensure seamless technology operations.

What are the most commonly searched types of System Administrator jobs in Wisconsin?

The most popular types of System Administrator jobs in Wisconsin are:

What cities in Wisconsin are hiring for Senior System Administrator jobs?

Cities in Wisconsin with the most Senior System Administrator job openings:

Senior System Administrator jobs near you
Infographic showing various Senior System Administrator job openings in Wisconsin as of August 2026, with employment types broken down into 1% As Needed, 84% Full Time, 12% Part Time, and 3% Contract. Highlights an 91% Physical, 3% Hybrid, and 6% Remote job distribution, with an average salary of $103,186 per year, or $49.6 per hour.

Senior System Administrator

SHINE Technologies LLC

Janesville, WI • On-site

$100K - $130K/yr

Full-time

This job post has expired today. Applications are no longer accepted.

Job description

Job Type
Full-time
Description
SHINE Technologies is seeking a highly skilled and experienced Senior Systems Administrator to join our IT Infrastructure team. The ideal candidate will have extensive experience administering Windows Server environments, Microsoft 365, Azure, Active Directory, and enterprise networking and storage solutions. This role is responsible for maintaining the stability, security, and performance of critical infrastructure systems while providing advanced technical support and serving as an escalation point for complex issues.
The Senior Systems Administrator will manage on-premises Windows Server environments running Hyper-V, administer SAN storage, support enterprise networking infrastructure, and oversee Microsoft cloud services. Experience with Linux systems is beneficial but not required.
The base salary range for this position is $100,000 - $130,000 per year plus a comprehensive compensation package. Our salary ranges are determined by role, level, and location.
Duties and Responsibilities:
Specific duties and responsibilities include, but are not limited to:
  • Provide advanced operational support for enterprise hardware, software, cloud services, and infrastructure platforms.
  • Monitor system health, identify trends, and proactively resolve issues before they impact business operations.
  • Respond to automated alerts and troubleshoot complex system, application, and infrastructure issues to restore normal operations.
  • Serve as a senior escalation point for critical incidents and production outages.
  • Administer and maintain Windows Server environments, including Hyper-V virtualization platforms.
  • Manage and maintain Active Directory, Group Policy, DNS, DHCP, and related infrastructure services.
  • Administer Microsoft 365 services, including Exchange Online, Teams, SharePoint, and related workloads.
  • Manage Azure subscriptions, resources, and identity services.
  • Provision, configure, and maintain SAN storage solutions, including MPIO and fiber-attached storage environments.
  • Administer, maintain, and troubleshoot enterprise networking infrastructure, including firewalls, switches, wireless networks, VPNs, and WAN connectivity.
  • Configure, manage, and support Cisco Firepower and SonicWall firewall platforms, including security policies, VPNs, NAT, content filtering, and threat prevention services.
  • Manage and support Aruba switching infrastructure, including VLAN configuration, routing, network segmentation, and performance monitoring.
  • Administer and maintain enterprise wireless environments utilizing Ubiquiti and Aruba wireless access points and management platforms.
  • Perform system patching, upgrades, maintenance, performance tuning, capacity planning, and lifecycle management.
  • Develop and maintain system documentation, operational procedures, network diagrams, and configuration standards.
  • Participate in disaster recovery planning, testing, and business continuity initiatives.
  • Collaborate with cybersecurity teams to implement security controls, remediation activities, and infrastructure security best practices.
  • Lead technical troubleshooting efforts and root cause analysis for recurring infrastructure and network issues.
  • Participate in infrastructure projects, migrations, upgrades, and technology implementations.
  • Recommend and implement automation solutions to improve operational efficiency and reduce manual processes.
  • Mentor junior administrators and provide technical guidance to team members.
  • Follow established change management, incident management, and problem management processes.
  • Maintain regular and reliable attendance.
  • Demonstrate strong communication skills and the ability to work effectively across technical and business teams.
  • Adapt to changing business needs and priorities in a fast-paced environment.

Requirements
  • Bachelor's degree in computer science, Information Systems, or a related field, or equivalent work experience.
  • Minimum of 7-10 years of experience in enterprise systems administration.
  • Extensive experience administering Windows Server environments.
  • Strong knowledge of Active Directory, Group Policy, DNS, DHCP, and Microsoft identity services.
  • Experience administering Microsoft 365 and Azure environments.
  • Experience supporting Hyper-V virtualization platforms.
  • Strong experience with enterprise networking technologies, including firewalls, switching, wireless networking, VPNs, and network troubleshooting.
  • Hands-on experience configuring and supporting Cisco Firepower and SonicWall firewall solutions.
  • Experience administering Aruba switching infrastructure.
  • Experience managing Ubiquiti and Aruba wireless access point deployments.
  • Strong troubleshooting and problem-solving skills in enterprise environments.
  • Experience supporting enterprise storage solutions and backup technologies.
  • Experience with PowerShell scripting and automation.
  • Proven ability to manage multiple priorities in a fast-paced environment.
  • Strong written and verbal communication skills.
  • Authorization to work in the United States without sponsorship.
  • Demonstrated ability to perform the essential duties of the position with or without accommodation.

Preferred Qualifications
  • Experience administering SAN storage platforms such as HP Nimble or similar enterprise storage arrays.
  • Experience with Microsoft Intune and endpoint management.
  • Experience with Microsoft Entra ID (Azure Active Directory), Conditional Access, and cloud security technologies.
  • Experience with VMware and/or Hyper-V virtualization platforms.
  • Familiarity with Linux server administration.
  • Industry certifications such as Microsoft Certified, Azure Administrator Associate, Cisco CCNA/CCNP, Aruba Certified Professional (ACP), SonicWall Certified Professional (SCP), VMware VCP, CompTIA Server+, or equivalent.
  • Experience with monitoring, automation, and configuration management tools.
  • Experience supporting manufacturing, distribution, or other mission-critical operational environments.

Key Competencies
  • Advanced Windows Server Administration
  • Microsoft 365 & Azure Administration
  • Active Directory & Identity Management
  • Cisco Firepower Firewall Administration
  • SonicWall Firewall Administration
  • Aruba Switching & Network Infrastructure
  • Ubiquiti & Aruba Wireless Networking
  • Enterprise Storage Management
  • Hyper-V Virtualization
  • Security & Compliance
  • PowerShell Automation & Scripting
  • Incident & Problem Management
  • Technical Leadership & Mentoring
  • Documentation & Process Improvement

Eligibility for employment is conditioned on the applicant's ability to qualify for access to information subject to U.S. Export Controls. Additionally, applicant's eligibility may be conditioned based upon meeting the Nuclear Regulatory Commission requirements for access to Safeguards Information, which typically requires a pre-employment drug screen, fingerprinting and criminal background check.
SHINE values diversity in all its forms as a critical component of innovation, which is fundamental to our success. Every member of the SHINE community benefits from the talents and experiences of our peers, from the mutual respect we exercise, and from the responsibility we take for our actions.
SHINE Technologies is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status.
Pay Transparency Policy
Employee Rights Under the NLRA
Equal Opportunity Employment
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