Senior Network Administrator (Chicago)

Company: CompuOne Corporation
Location: Glen Ellyn, IL (On-site with local travel to client locations)
Experience Level: Senior (5+ years)
Compensation: Competitive Salary + Benefits + Mileage Reimbursement

Lead the Backbone of IT Infrastructure.

Are you an experienced network professional ready to take ownership of enterprise-level systems and lead complex technical initiatives? Do you thrive in a role where your decisions directly impact network performance, security, and scalability?

CompuOne Corporation — a full-service managed IT services provider headquartered in San Diego — is seeking a Senior Network Administrator to join our Illinois technical team. This is your opportunity to play a vital role in designing, managing, and securing advanced network environments across multiple client sites.

 What You’ll Do:

• Lead the design, implementation, and support of scalable network infrastructure (switches, routers, firewalls, wireless, etc.)
• Monitor and optimize network performance, availability, and security using industry best practices
• Troubleshoot and resolve complex network issues, escalating and coordinating with vendors as needed
• Configure and maintain VLANs, STP, LACP, QoS, and security protocols
• Administer Windows Server environments, Active Directory, and Office 365
• Manage virtualization platforms including VMware, Hyper-V, and Azure
• Oversee system audits, documentation, and disaster recovery planning
• Serve as a technical lead on network projects and mentor junior team members
• Stay ahead of emerging technologies and recommend improvements
• Travel to client sites locally as needed (mileage reimbursement provided)

 What You Bring to the Table:

• 5+ years of experience in network administration and IT infrastructure support
• Proven expertise in switching, routing, and firewall management
• Advanced knowledge of network security practices and access controls
• Strong command of Microsoft environments, including Office 365 and Active Directory
• Experience managing virtual environments (VMware, Hyper-V, ESXi, Azure)
• Proficiency with network monitoring and diagnostic tools
• Strong communication, leadership, and project management skills
• Ability to work independently, prioritize multiple projects, and meet deadlines

 Why Join CompuOne?

• Join a dynamic company with 20+ years of excellence in IT services
• Collaborate with top-tier technical professionals
• Work with diverse client environments and cutting-edge tech
• Enjoy a comprehensive benefits package, including:
  • Competitive salary – salary range $50,000 – $80,000 p/year
  • Health and Dental insurance
  • 401(k) with company match
  • Paid holidays and PTO
  • Mileage reimbursement
  • Career development support

 Preferred Qualifications:

• Bachelor’s degree in IT, Networking, or a related field (or equivalent work experience)
• Industry certifications such as CCNP, CCIE, JNCIP, CompTIA Network+, or Microsoft Certified
• Experience working in a MSP (Managed Services Provider) environment is a plus