Sr. Network Engineer

**PLEASE NOTE: This is a hybrid role requiring in-office presence 3 days per week (Monday-Wednesday or Tuesday-Thursday) with 2 days remote. The candidate must be in or near Charlotte, NC or have plans to relocate. This position includes participation in an on-call rotation to support critical network infrastructure. Additionally, this position does not offer visa sponsorship.

THE POSITION 

As a Senior Network Engineer, you will lead the implementation, maintenance, optimization, and architectural design of LendingTree's enterprise network infrastructure. You will serve as a subject matter expert in our Fortinet-based environment, including firewalls, switches, access points, FortiSASE, and SD-WAN solutions. Collaborating with Infrastructure Engineering, Security, Cloud Operations, and DevOps teams, you will support network modernization, automation, and reliability initiatives.

This role is ideal for a Senior engineer who is familiar with modern Infrastructure as Code (IaC) principles, network automation, and modern cloud networking architectures across AWS and Azure while embracing SRE fundamentals to ensure our network services are reliable, scalable, and observable.

THE RESPONSIBILITIES

Network Infrastructure 

• Design, implement, and maintain enterprise network infrastructure including Fortinet firewalls (FortiGate), switches (FortiSwitch), and wireless access points (FortiAP) 

• Manage and optimize FortiSASE (Secure Access Service Edge) for secure remote access and SD-WAN connectivity 

• Administer FortiNAC (Network Access Control) for device visibility, authentication, and network segmentation 

• Monitor network performance, troubleshoot complex issues, and ensure high availability of critical network services 

• Implement and maintain network security policies, VPNs, and firewall rules aligned with security best practices 

• Perform capacity planning and make recommendations for network infrastructure upgrades and expansions 

Cloud Networking