Sr. Networking Engineer

PLEASE NOTE: This is a hybrid role requiring in‑office presence 3 days a 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.

THE POSITION

As a Senior Network Engineer, you will lead the implementation, maintenance, optimization, and architectural design of Lending Tree’s enterprise network infrastructure. You will serve as a subject matter expert in our Fortinet‑based environment, including firewalls, switches, access points, Forti

SASE, and SD‑WAN solutions. Collaborating with Infrastructure Engineering, Security, Cloud Operations, and Dev Ops 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.

Design, implement, and maintain enterprise network infrastructure including Fortinet firewalls (Forti Gate), switches (Forti Switch), and wireless access points (Forti

AP).

Manage and optimize Forti

SASE (Secure Access Service Edge) for secure remote access and SD‑WAN connectivity.

Administer Forti

NAC (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.

Design and implement cloud networking solutions in AWS (VPC, Transit Gateway, Direct Connect, Route 53, Cloud Front, etc.).

Design and implement cloud networking solutions in Azure (VNet, VPN Gateway, Express Route, Azure Firewall, Traffic Manager, etc.).

Build and maintain hybrid cloud connectivity between on‑premises Fortinet infrastructure and cloud environments.

Support hybrid cloud connectivity between on‑premises Fortinet infrastructure and cloud environments.

Assist with cloud‑native security controls and network segmentation.

Leverage Sumo Logic and Forti Analyzer for network observability, log analysis, and alerting.

Define and monitor Service Level Indicators (SLIs) and Service Level Objectives (SLOs) for network services.

Participate in incident response, blameless post‑mortems, and root cause analysis.

Identify and reduce toil through automation and process improvement.

Contribute to runbooks and operational documentation to improve reliability.

Develop and maintain Infrastructure as Code (IaC) using Terraform for network infrastructure provisioning and configuration management.

Implement CI/CD pipelines for automated deployment of firewall rules, network configurations, and policy changes.

Create automation scripts using Python, Ansible, or other tools to streamline network operations and reduce manual tasks.

Leverage Fortinet APIs and SDKs for programmatic network management and orchestration.

Build self‑service capabilities and automation workflows to improve operational efficiency.

Partner with Info Sec teams on implementing security controls and policies.

Collaborate with Dev Ops and Platform Engineering teams to support application infrastructure requirements.

Work with Infrastructure Engineering team on server, storage, and virtualization networking needs.

Create and maintain network documentation, diagrams, and runbooks.

Participate in on‑call rotation to provide support for critical network infrastructure.

Respond to and help resolve network incidents, outages, and performance issues.

5+ years of experience in network engineering or a related technical role.

2+ years of hands‑on experience with Fortinet products (Forti Gate firewalls, Forti Switch, or Forti

AP).

Hands‑on experience with…