OneMain Financial Jobs

Job Information

Robert Half Sr Systems Administrator in Jacksonville, Florida

Description

We are looking for a Senior Systems Administrator who can support and enhance our hybrid environment across cloud services, enterprise applications, and core business systems. You will be responsible for daily operations, stability, user experience, and proactive improvements to ensure high availability and security.

What You’ll Do

  • Administer Azure/AWS environments, resource groups, VMs, identity, and backups

  • Manage Windows Server environments, patching, updates, and security controls

  • Support enterprise applications (O365, Exchange Online, SharePoint, Teams)

  • Maintain monitoring, alerting, performance tuning, and incident response

  • Troubleshoot issues across servers, networks, applications, and integrations

  • Coordinate with vendors, security, and engineering teams on escalations

  • Document system configurations, standards, and operational procedures

  • Assist with deployments, upgrades, and rollout of new technologies

    Requirements

What We’re Looking For

  • 5–8+ years in Systems Administration

  • Strong knowledge of Azure, O365, AD/Entra ID, and Windows Server

  • Familiarity with VMware, Linux, storage, and networking fundamentals

  • Hands-on scripting skills (PowerShell preferred)

  • Experience supporting enterprise apps and complex technical environments

    Technology Doesn't Change the World, People Do.®

Robert Half is the world’s first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles.

Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. Download the Robert Half app (https://www.roberthalf.com/us/en/mobile-app) and get 1-tap apply, notifications of AI-matched jobs, and much more.

All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit roberthalf.gobenefits.net for more information.

© 2025 Robert Half. An Equal Opportunity Employer. M/F/Disability/Veterans. By clicking “Apply Now,” you’re agreeing to Robert Half’s Terms of Use (https://www.roberthalf.com/us/en/terms) and Privacy Notice (https://www.roberthalf.com/us/en/privacy) .

DirectEmployers