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5 results for Systems Administrator in Janesville, WI

Senior Systems Administrator

Janesville, WI
onsite
Permanent / Full Time
90000 - 130000 USD / Yearly
Robert Half is partnering with our client in the Janesville area to hire an experienced Senior Systems Administrator to support and enhance a complex enterprise IT infrastructure. This is a hands-on senior-level role responsible for maintaining highly available server, cloud, storage, and network environments while serving as the primary escalation point for complex infrastructure issues. The ideal candidate brings deep Microsoft infrastructure expertise, strong networking experience, and a proactive approach to system reliability, security, and continuous improvement. Responsibilities<ul><li>Administer, maintain, and optimize enterprise Windows Server environments, ensuring high availability, performance, and security.</li><li>Manage Hyper-V virtualization infrastructure and support server lifecycle activities including deployments, upgrades, patching, and performance tuning.</li><li>Administer Microsoft 365 services including Exchange Online, Teams, SharePoint, and related cloud technologies.</li><li>Manage Azure infrastructure, subscriptions, identity services, and cloud resources.</li><li>Maintain Active Directory, Group Policy, DNS, DHCP, and identity management services.</li><li>Support enterprise storage infrastructure, including SAN environments and backup technologies.</li><li>Configure, manage, and troubleshoot enterprise networking components including firewalls, switches, wireless networks, VPNs, and WAN connectivity.</li><li>Administer Cisco Firepower and SonicWall firewalls, including security policies, VPN configuration, NAT, content filtering, and threat prevention.</li><li>Manage Aruba switching infrastructure, VLANs, routing, network segmentation, and wireless environments utilizing Aruba and Ubiquiti technologies.</li><li>Monitor infrastructure health, identify trends, and proactively resolve issues before they impact business operations.</li><li>Lead troubleshooting efforts for complex infrastructure incidents and perform root cause analysis.</li><li>Participate in infrastructure projects including migrations, upgrades, cloud initiatives, and technology implementations.</li><li>Develop and maintain technical documentation, network diagrams, operational procedures, and configuration standards.</li><li>Partner with security teams to implement infrastructure security best practices and remediation efforts.</li><li>Identify opportunities to automate administrative tasks using PowerShell and other automation tools.</li><li>Mentor junior team members and provide technical leadership on infrastructure initiatives.</li></ul>
2026-08-27T00:00:00Z

Systems Engineer

Middleton, WI
onsite
Temporary / Contract
31.6635 - 36.663 USD / Hourly
We are looking for a Systems Engineer to support and enhance Windows endpoint operations for an insurance organization in Middleton, Wisconsin. This Long-term Contract position focuses on endpoint administration, directory services, and automation, with an emphasis on maintaining a secure, well-managed user environment. The ideal candidate brings hands-on experience with PowerShell, Group Policy, Active Directory, and modern endpoint management tools to improve reliability and operational efficiency. Responsibilities: • Administer Windows endpoints across the environment, ensuring devices are configured, secured, and maintained according to organizational standards. • Manage and refine Group Policy settings to support consistent system behavior, access controls, and user experience across managed devices. • Perform Active Directory administration tasks, including scripting, cleanup efforts, and ongoing directory maintenance to keep the environment organized and accurate. • Use PowerShell to automate repetitive operational work, streamline administration, and improve the efficiency of support processes. • Support endpoint management initiatives through platforms such as Intune and other unified endpoint management tools. • Monitor endpoint security posture and help implement measures that strengthen device protection and policy compliance. • Troubleshoot issues related to Windows systems, user access, device configuration, and policy application in a timely manner. • Collaborate with infrastructure and support teams to improve system stability and address technical challenges affecting endpoint services.
2026-08-27T00:00:00Z

Database Administrator

Middleton, WI
onsite
Temporary to Hire
54 - 62 USD / Hourly
We are looking for an experienced Database Administrator to support critical data environments for a company in the gas industry in Madison, Wisconsin. This is an onsite contract-to-permanent opportunity suited for a detail-oriented candidate who can manage database reliability, strengthen performance, and help maintain secure, efficient systems. The ideal candidate brings deep expertise across SQL-based platforms and can work closely with technical teams to keep database operations stable and scalable. Responsibilities: • Administer and maintain database platforms to support day-to-day business operations and long-term system reliability. • Monitor database health, troubleshoot issues, and resolve performance bottlenecks to improve availability and response times. • Optimize queries, indexing strategies, and server configurations across Microsoft SQL Server, Azure SQL Database, and MySQL environments. • Implement backup, recovery, and disaster recovery procedures to safeguard data and minimize operational risk. • Partner with application and infrastructure teams to support deployments, database changes, and production stability. • Enforce database security standards, access controls, and maintenance practices to protect sensitive information. • Analyze system behavior and recommend improvements that enhance scalability, efficiency, and overall database performance. • Assist with database-related upgrades, enhancements, and environment changes as business needs evolve.
2026-08-27T00:00:00Z

Database Administrator (SQL)

Madison, WI
onsite
Permanent / Full Time
120000 - 150000 USD / Yearly
Robert Half is seeking an experienced Database Administrator to manage and support enterprise database environments with a primary focus on Microsoft SQL Server. This role is responsible for ensuring database availability, performance, security, and reliability for critical business applications. The position requires a high level of independence, strong troubleshooting ability, and collaboration with development and infrastructure teams. This is a direct hire role with our partner in Madison, WI. Key Responsibilities<ul><li>Administer, monitor, and maintain Microsoft SQL Server environments to ensure performance, reliability, and availability</li><li>Provide secondary support for Oracle database environments</li><li>Perform routine database maintenance including backups, restores, patching, upgrades, and health checks</li><li>Diagnose and resolve database performance issues, availability problems, and data integrity concerns</li><li>Design and maintain disaster recovery and business continuity solutions, including regular testing</li><li>Implement and maintain database security and access controls</li><li>Partner with application developers and infrastructure teams to support database-dependent systems</li><li>Support database platform upgrades, modernization efforts, and lifecycle management</li><li>Contribute to operational reporting related to backups, availability, and system health</li><li>Participate in on-call support for production database systems</li><li>Document database standards, procedures, and configurations</li></ul>
2026-08-27T00:00:00Z

IT Infrastructure Supervisor

Madison, WI
onsite
Permanent / Full Time
120000 - 150000 USD / Yearly
Robert Half is seeking an IT Infrastructure Supervisor on behalf of our client in Madison, WI. This is a hands-on leadership role responsible for overseeing a team of infrastructure professionals while contributing to the design, support, and improvement of the organization's technology environment. The ideal candidate brings a combination of technical expertise, leadership experience, and a passion for developing team members while driving operational excellence. What You'll Do<ul><li>Lead, mentor, and develop a team responsible for infrastructure and operational support.</li><li>Manage team priorities, project assignments, and day-to-day workload.</li><li>Serve as an escalation point for complex technical issues and critical incidents.</li><li>Support and improve server, network, cloud, and infrastructure environments.</li><li>Drive automation, system reliability, and operational efficiency initiatives.</li><li>Oversee monitoring, incident response, disaster recovery, and business continuity efforts.</li><li>Participate in infrastructure projects, upgrades, and technology improvements.</li><li>Help establish standards, processes, and best practices across the IT environment.</li><li>Collaborate with leadership and technical teams to support organizational goals.</li><li>Participate in hiring, onboarding, performance management, and career development activities.</li></ul>
2026-07-29T00:00:00Z