Sr. Network Engineer

Senior 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. Candidates must be legally authorized to work in the United States. LendingTree and its affiliates (“LendingTree”) will not provide or assume sponsorship for employment visas for this position, now or in the future. The Opportunity As a Senior Network Engineer, you’ll play a key role in designing, implementing, and evolving LendingTree’s enterprise network infrastructure. You’ll serve as a subject matter expert across our Fortinet-based environment while helping modernize our network through cloud connectivity, automation, Infrastructure as Code, and Site Reliability Engineering (SRE) practices. You’ll work across Infrastructure Engineering, Security, Cloud Operations, and DevOps to build network services that are secure, scalable, highly available, and observable. This is a hands-on technical role with opportunities to influence architecture, lead projects, mentor engineers, and shape the future of LendingTree’s network infrastructure across on-premises and cloud environments. How You’ll Make an Impact Design, implement, maintain, and optimize enterprise network infrastructure, including Fortinet FortiGate firewalls, FortiSwitch, FortiAP, FortiSASE, and FortiNAC. Design and support cloud networking solutions across AWS and Azure, including hybrid connectivity between cloud environments and LendingTree’s on-premises infrastructure. Lead network modernization and automation initiatives using Infrastructure as Code, CI/CD, scripting, APIs, and tools such as Terraform, Ansible, and Python. Improve the reliability and observability of network services by defining and monitoring SLIs and SLOs, analyzing logs and performance data, participating in incident response, and driving root cause analysis and continuous improvement. Establish and maintain network security policies, firewall rules, VPNs, segmentation, and other controls in partnership with Information Security. Troubleshoot complex network issues, respond to outages and performance problems, and participate in an on-call rotation supporting critical network infrastructure. Lead network architecture reviews, capacity planning, roadmap development, and infrastructure upgrades and expansions. Mentor junior network engineers and provide technical guidance across the organization. Develop documentation, diagrams, runbooks, and operational processes that improve the reliability and maintainability of network services. Who You’ll Work With You’ll work closely with Infrastructure Engineering, Information Security, Cloud Operations, DevOps, and Platform Engineering teams to support LendingTree’s applications and technology environment. You’ll partner with technical stakeholders to design secure, reliable network solutions and translate infrastructure requirements into scalable implementations. As a senior member of the team, you’ll also provide technical leadership through architecture reviews, project leadership, mentoring, and cross-functional collaboration. The role combines independent ownership with a highly collaborative operating model. What You’ll Bring 5+ years of experience in network engineering or a related technical role. 2+ years of hands-on experience with Fortinet products, including FortiGate, FortiSwitch, or FortiAP. Hands-on experience with cloud networking in AWS and/or Azure environments. Experience working in enterprise-scale environments and leading technical projects or initiatives. Strong understanding of networking protocols and technologies, including BGP, OSPF, VLAN, STP, and LACP. Experience with VPN technologies such as IPSec, SSL VPN, and SD-WAN. Working knowledge of FortiOS, FortiGate firewall configuration, FortiSwitch, FortiAP wireless, and FortiSASE. Experience with network security principles, firewall policies, network segmentation, and VPN configuration. Scripting experience with Python, Bash, PowerShell, or similar tools. Exposure to Infrastructure as Code and automation technologies such as Terraform and Ansible. Familiarity with Git and CI/CD pipelines. Experience with network monitoring, logging, and observability tools such as SumoLogic, FortiAnalyzer, CloudWatch, or similar platforms. Experience troubleshooting complex network issues using tools such as Wireshark and tcpdump. Strong analytical, problem-solving, and troubleshooting skills. Strong technical documentation skills and attention to detail. Ability to communicate technical concepts clearly and collaborate effectively across teams. What Will Help You Thrive Technical leadership: You can influence architecture and technical direction while remaining hands-on with implementation and troubleshooting. Automation mindset: You look for opportunities to eliminate repetitive work, improve consistency, and make infrastructure easier to operate through automation and IaC. Reliability focus: You think beyond whether a system works today and consider how it will perform, scale, and recover tomorrow. Security mindset: You understand that network architecture and security are closely connected and can balance accessibility, performance, and risk. Cloud curiosity: You’re interested in modern cloud networking architectures and enjoy expanding your expertise across AWS, Azure, and hybrid environments. Ownership: You take responsibility for problems through resolution and look for ways to prevent recurring issues. Mentorship: You enjoy helping other engineers develop their technical skills and confidence. Communication: You can explain complex technical issues clearly to both technical and non-technical stakeholders. Continuous learning: You’re curious about emerging technologies and eager to improve both your technical expertise and the systems you support. Collaborative problem-solving: You’re comfortable asking questions, working through ambiguity, and partnering across teams to solve challenging infrastructure problems. What Success Looks Like LendingTree’s enterprise network remains secure, highly available, scalable, and reliable as business and technology needs evolve. Fortinet network infrastructure, SASE, SD-WAN, and network access controls are effectively managed and continuously optimized. AWS and Azure connectivity provides secure, reliable communication between cloud and on-premises environments. Network provisioning, configuration, and policy changes become increasingly automated through Terraform, CI/CD, APIs, and scripting. Network services have meaningful observability through effective logging, monitoring, SLIs, and SLOs. Network incidents are resolved efficiently, with root causes identified and recurring issues reduced through preventative improvements. Network architecture and technology roadmaps evolve in alignment with broader infrastructure, security, and business priorities. Documentation and runbooks make network operations more consistent, scalable, and resilient. Junior engineers receive effective technical mentorship and guidance. Cross-functional teams view you as a trusted technical partner for network architecture, security, reliability, and troubleshooting. Life at LendingTree We’re a collaborative, entrepreneurial team that’s curious, creative, and always ready to roll up our sleeves and get things done. You’ll work alongside smart, driven people who care about doing great work — and about helping each other succeed. We believe the best ideas come from different perspectives, and we’re committed to creating a workplace where people feel welcomed, valued, and empowered to make an impact. You’ll have the trust and flexibility to do your best work, the opportunity to take ownership and try new things, and teammates who genuinely enjoy working together. And while we work hard, we don’t take ourselves too seriously. We celebrate wins, recognize great work, and make time to have some fun along the way. Our GSD — Get Stuff Done — Award is a fan favorite. Come grow with us, make an impact, and help us build what’s next. What We Offer We want you to feel supported at work and beyond. Our benefits and programs are designed to help you stay healthy, recharge, plan for the future, and bring your best to whatever matters most to you. Medical, dental, and vision insurance 401(k) matching Generous time off Wellness programs and resources Annual performance bonus eligibility The Details Base Pay: $110,000–$140,000 The base pay offered may vary based on internal factors, job-related knowledge, skills, location, and experience. Incentive Compensation: This position is eligible for an annual performance bonus. Work Location: Charlotte, NC — hybrid schedule with 3 days in-office (Monday–Wednesday or Tuesday–Thursday) and 2 days remote. On-Call: This position participates in an on-call rotation to support critical network infrastructure. Work Authorization: This role is not eligible for immigration sponsorship. Please do not apply for this role if you will need employer sponsorship now or in the future to begin or continue employment. Nice to Have Fortinet NSE 5+ certification. AWS Advanced Networking Specialty or Azure Network Engineer Associate certification. CCNA, CCNP, or equivalent networking certification. Hands-on experience with FortiManager and FortiAnalyzer. Experience with containerized networking, including Kubernetes or Docker. Strong understanding of SRE practices, SLIs/SLOs, and incident management. Experience with network observability platforms such as SumoLogic, Datadog, or Splunk. Knowledge of DevOps practices and agile methodologies. Experience working in a SOX-compliant or regulated environment. Strong understanding of SD-WAN optimization and application-aware routing. Education A bachelor’s or master’s degree in Computer Science, Information Technology, Network Engineering, or a related field is preferred but not required. An equivalent combination of education, training, and professional experience will be considered. Everyone Belongs Here LendingTree is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We do not discriminate based on race, color, religion (or creed), gender, gender expression, age, national origin, disability, marital status, sexual orientation, or military status. If you believe you need a reasonable accommodation in order to search for a job opening or to submit an application, please email us at humanresources@lendingtree.com. Qualified candidates must be able to perform the essential functions of this position satisfactorily with or without a reasonable accommodation. This job post is not necessarily an exhaustive list of all essential responsibilities, skills, tasks, or requirements associated with this position. While this is intended to be an accurate reflection of the position posted, LendingTree reserves the right to modify or change the essential functions of the position based on business necessity. CCPA Disclosure CCPA Disclosure