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Senior System and Network Administrator

Location:
North Aurora, IL, 60542
Posted:
May 14, 2025

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Resume:

Corey Quarles

Senior Network Administrator

*** ************ **., ***** ******, United States, 60542

630-***-****

*****.*******@*****.***

Senior Network Administrator with over two decades of extensive expertise in IT support and administration, specializing in network security and virtualization. Proficient in managing complex infrastructures, including cloud platforms like Azure, and skilled in implementing advanced monitoring tools to enhance performance and security. Passionate about optimizing IT systems to ensure seamless operations and future-proofing network environments. Employment history

Senior Network

Engineer, Sterling

Network Integrations,

Mar 2024 - Present

North Aurora, IL

System Administrator,

Dovenmuhle Mortgage

Inc, Apr 2021 - Mar

2024

North Aurora, IL

System Administrator,

Cinch Connectors, May

2014 - Apr 2021

North Aurora, IL

Network Administrator,

Independent IT

Consultant, Sep 2013 -

May 2014

Chicago, IL

Senior Systems

Administrator, Castema

Technology Services,

Oct 2011 - Sep 2013

Chicago, IL

Network Administrator,

Independent IT

Consultant, Mar 2010 -

Oct 2011

Chicago, IL

Manage 50+ client networks, enhancing security and reducing response times. Implement advanced monitoring tools, optimizing resources and boosting network performance.

Administer virtual platforms like VMWare, Hyper-V, and Azure for seamless operations. Oversee router, switch, and firewall management across multiple platforms. Ensure robust backup solutions with VEEAM, safeguarding client data. Administer systems for 4000+ users, ensuring seamless operations and security. Maintain 600+ servers, optimizing performance and reliability with a team. Manage Azure resources, enhancing cloud infrastructure efficiency. Collaborate with developers to automate tasks, boosting productivity. Monitor resources with PRTG, ensuring prompt issue resolution. Managed 60 servers, enhancing network reliability for 1100 users. Led disaster recovery with Hyper-V, ensuring data protection. Coordinated infrastructure from ISP to Office 365, optimizing operations. Documented equipment and contracts, improving resource tracking. Supported executive office, providing prompt technical solutions. Managed network support for multiple municipalities, enhancing system reliability and efficiency.

Revitalized network infrastructures, improving performance and security for local governments.

Provided maintenance for Shell Gas Stations, ensuring minimal downtime and operational continuity.

Administered networks for SMBs, enhancing infrastructure and ensuring reliable data backups.

Implemented VMware for server consolidation, optimizing client resources and performance.

Managed Active Directory and SSL certificates, ensuring secure and compliant client environments.

Managed network infrastructure for SMBs, enhancing reliability and efficiency. Designed disaster recovery solutions for critical sectors, ensuring data integrity. Planned and implemented networks for up to 50 users, optimizing connectivity. Configured LAN/WAN routers and switches, improving network performance. Supported various Windows OS, maintaining seamless operations. Employment history

Client Services Network

Administrator, Midwest

Information Systems,

Sep 2007 - Feb 2009

Chicago, IL

Senior System

Administrator, The Gad

Group LLC, Feb 2006 -

Jun 2007

Chicago, IL

Hardware Analyst,

Metlife Insurance, Nov

2004 - Feb 2006

Chicago, IL

System Deployment

Contractor, School

District 365U, Aug

2003 - May 2004

Chicago, IL

Level II System

Engineer, Navistar

Financial, Aug 2001 -

Sep 2003

Chicago, IL

Education

Downers Grove South High School, Downers Grove, IL, Aug 1992 - 1996 Courses

MCSE, Mar 2002

Microsoft

CCNA, May 2002

Cisco

Q-RADAR, Oct 2019

IBM

Configured and supported networks for over 20 businesses, enhancing connectivity and efficiency.

Installed and maintained LAN/WAN equipment, ensuring seamless network operations for clients.

Managed network infrastructure with Active Directory, optimizing user access and security.

Provided remote support for server and workstation issues, improving client satisfaction. Trained clients on FTP server management, empowering them to handle website content effectively.

Managed network infrastructure for SMBs, enhancing system reliability and user satisfaction.

Configured VOIP systems, ensuring seamless communication across multiple offices. Trained staff on tech use, improving operational efficiency and tech adoption. Negotiated vendor agreements, optimizing service costs and hardware procurement. Implemented mobile internet for libraries, expanding accessibility for remote users. Delivered phone and on-site hardware support for servers, desktops, laptops, and printers. Enhanced technical documentation with System Administrators for internal knowledge base.

Resolved smartphone connectivity issues, boosting user productivity. Supported remote users, improving system access and efficiency. Managed Dell and HP hardware, ensuring reliable performance. Rebuilt and installed donated computers for low-income families, enhancing access to technology.

Delivered and set up computers, ensuring operational readiness for educational use. Collaborated with school district to support community outreach and technology access. Resolved technical issues during setup, improving user experience and satisfaction. Facilitated computer deployment, contributing to educational opportunities for children. Managed 10-30 daily tickets with TrackIt, ensuring efficient issue resolution. Installed and supported Windows OS, enhancing system reliability. Utilized Active Directory for effective network resource management. Provided phone/on-site support for LAN/WAN, maintaining connectivity. Collaborated on technical support docs, improving team efficiency.



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