Senior Network Automation Engineer – Enterprise Networking

Lexicon Resources LLC; Austin (TX); On-site; USD 110,000 - 150,000; Full time

Job summary

Lexicon Resources LLC is seeking an experienced Network Engineer for an on-site role in Austin, TX. You will design, configure, and maintain enterprise network infrastructure, focusing on Layer 2/3 switching and data center/campus environments.

The ideal candidate has 5+ years of experience, deep expertise in VLANs, routing protocols, and network automation using Python or Ansible. You will work with REST APIs and major platforms (Dell, Cisco, Arista, Juniper) to deliver reliable, secure

Qualifications

• Bachelor's degree or equivalent experience in CS/IT or related field.
• 5+ years of network engineering experience.
• Strong expertise in Layer 2/Layer 3 switching, VLANs, VRRP, MC-LAG, STP, VTP, PortChannel, and OSPF/BGP.
• Enterprise network design and troubleshooting experience.
• Hands-on with network automation tools such as Python/Ansible.
• REST APIs and network programmability concepts.
• Familiarity with Dell, Cisco, Arista, Juniper platforms.
• Solid TCP/IP, DNS, DHCP, and network security fundamentals.

Responsibilities

• Design, configure, and maintain Wireless Access Points and Wireless Controllers.
• Design, configure, and maintain enterprise network infrastructure focused on Layer 2/Layer 3 switching.
• Develop and implement network automation solutions to streamline provisioning, configuration, and troubleshooting.
• Manage and optimize network performance, availability, and security across data center and campus environments.
• Automate routine network operations using scripting and orchestration tools.
• Collaborate with cross-functional teams to support network integration and deployment efforts.
• Troubleshoot complex network issues and perform root cause analysis.
• Maintain up-to-date network documentation, diagrams, and operational procedures.
• Participate in change management, incident response, and continuous improvement initiatives.
• Deep experience with software architecture, API contract design, and data schema rules.

Skills

L2/L3 switching

VLANs

VRRP

MC-LAG

STP

VTP

PortChannel

OSPF

BGP

Network design

Troubleshooting

Automation tools

Python

Ansible

REST APIs

Networking platforms

Education

Bachelor's degree in Computer Science/IT

Tools

Python

Ansible

Job description

Lexicon Resources LLC is seeking an experienced Network Engineer for an on-site role in Austin, TX. You will design, configure, and maintain enterprise network infrastructure, focusing on Layer 2/3 switching and data center/campus environments.

The ideal candidate has 5+ years of experience, deep expertise in VLANs, routing protocols, and network automation using Python or Ansible. You will work with REST APIs and major platforms (Dell, Cisco, Arista, Juniper) to deliver reliable, secure