System Administrator Tier 3 Network

Tier 3 Network / Systems Administrator Lewis Bakeries is seeking a skilled and motivated Tier 3 Network / Systems Administrator to support and enhance our enterprise network and systems infrastructure. This senior technical role is responsible for designing, maintaining, and improving core IT environments across multiple bakery, distribution, and corporate locations.

The ideal candidate brings a balanced background in network and systems administration, a proactive and security-focused mindset, and the ability to serve as a Tier 3 escalation resource in a fast-paced manufacturing environment. While this role focuses on infrastructure and architecture, collaboration and hands-on support are essential to maintaining a reliable and responsive IT organization.

Responsibilities Network Administration Design, implement, and maintain LAN, WAN, WLAN, VPN, and remote connectivity solutions

Configure, manage, and troubleshoot routers, switches, firewalls, wireless systems, and related hardware

Monitor network performance and optimize reliability and availability

Troubleshoot complex routing, switching, wireless, and security incidents

Support network security initiatives including segmentation and access controls

Maintain network documentation, diagrams, and configuration standards

Participate in network upgrades and modernization projects

Systems & Infrastructure Administration Administer Microsoft 365 services including Entra , Exchange Online, SharePoint, One Drive, and Teams Manage user accounts across Active Directory and Microsoft 365

Design and maintain Group Policy Objects (GPOs)
Deploy and maintain Windows servers (on-prem and virtualized)
Support endpoint deployment and lifecycle management

Administer endpoint security platforms such as Sentinel One Assist  with device management platforms including Intune and MDM solutions

Support backup, recovery, and disaster recovery processes

Resolve complex operating system, authentication, and application issues

General & Operational Responsibilities Serve as a Tier 3 escalation resource for networking, systems, and security issues

Provide hands-on end-user support during peak periods or critical incidents

Collaborate with vendors and internal teams

Maintain infrastructure documentation and best practices

Participate in on-call rotation and after-hours support

Assist with audits and security reviews

Qualifications Required Bachelor ’s degree in IT, Computer Science, or related field, or equivalent experience

Four (4) to five (5) years of network and/or systems administration experience

Strong knowledge of TCP/IP, routing, and switching

Experience with enterprise firewalls (Cisco, Fortinet, Palo Alto, or similar)
Experience administering Windows Server, Active Directory, Group Policy, and Microsoft 365

Experience with endpoint protection and EDR platforms

Strong troubleshooting and problem-solving skills

Excellent documentation and communication abilities

Preferred

Relevant certifications (CCNA/CCNP, Network+, Security+, Microsoft, Azure/M365)
Manufacturing or distribution environment experience

Experience with cloud platforms and hybrid identity models

Familiarity with Intune, MDM, and zero-trust concepts

Knowledge of VoIP and unified communications

Automation or scripting experience (Power Shell, Python, Ansible)
About Lewis Bakeries Founded in 1925, Lewis Bakeries is a family-owned company producing high-quality breads, buns, and rolls under trusted brands including Bunny Bread, Lewis Bake Shop, and Healthy Life. With operations across Indiana and Tennessee, we are committed to innovation, reliability, and investing in our people.

Why Join Lewis Bakeries Family-owned and operated since 1925

Competitive compensation

Comprehensive benefits including medical, dental, 401(k), and company-paid life and disability insurance

Paid vacation and holidays

Growth and development opportunities

Equal Opportunity Employer Lewis Bakeries is an Equal Opportunity Employer and Drug-Free Workplace. All qualified applicants will receive consideration without regard to race, color, religion, sex, national origin, disability, veteran status, or any other protected status.

Employment is contingent upon successful completion of a background check, drug screening, and reference check.#lb management
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