Systems Administrator

Sonoma Consulting Inc.

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Elk Grove Village, IL, us on site Until 8/21/2026 First posted February 24, 2026 Last posted February 24, 2026
Job description

Sonoma Consulting is one of the fastest growing national IT Consulting and Executive Search company in the United States, which was founded in 2011 by Mark McGee, the President and CEO. Sonoma Consulting has two business divisions - IT Consulting Services & Executive Search to serve its 150 national clients which range from entrepreneurial start-ups to Global Fortune 500.

The Systems Administrator is primarily responsible for supporting, maintaining, growing and optimizing RedHat 6.x and CentOS Linux systems. As a key member of the Infrastructure Team, this individual is expected to provide support across all enterprise systems and technologies, including email platform, voice and data communication, Windows 2008/2012, virtualization and storage.

The Systems Administrator is also responsible for performing application deployments and upgrades. The Administrator ensures maximum service availability by taking appropriate steps in the failure prevention, monitoring and disaster recovery processes. The Administrator also provides a second tier support to the Service Desk team and is part of the 24/7 on-call rotation.

MANDATORY SKILLS (High Proficiency)

· 4-8 years RedHat or CentOS Linux OS administration.

· At least 2 years of Cisco L2 and L3 routing and switching.

· 2-4 years of Apache support.

· Proficiency in TCP/IP, DNS, DHCP, NFS, SMTP, RIP, EIGRP.

· 2-3 years Windows 2002/3008 server administration.

· Experience in server hardware technologies, including SAN.

· Effective oral and written communication & documentation skills.

All qualified applicants will receive consideration for employment
without regard to race, color, religion, place of origin, ethnic origin,
national origin, ancestry, age, sex, sexual orientation, gender
identity, transgender status, genetic information, mental or physical
disability, marital status, pregnancy, veteran status, or any other
characteristic protected by applicable national, state, or local law.

About this role

Summary

Support and optimize Linux systems, networking, Windows servers, and ensure high service availability.

Job title

Systems Administrator

Experience level

4-8 years

Industry

it consulting

Location requirements

Elk Grove Village, IL; on-site role with some support duties.

Salary

Not specified

Management role

No

Skills & keywords

Required skills

RedHatCentOSCisco L2Cisco L3ApacheTCP/IPDNSDHCPNFSSMTPRIPEIGRPWindows 2008/2012SANcommunication

Preferred skills

None specified

Specializations

linux administrationnetwork routingserver supportenterprise systems
Locations

Structured locations inferred from the posting.

Elk Grove Village, IL, USA

On-site City