Sr Lead Network Reliability Engineer

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Sr Lead Network Reliability Engineer based in United States. This is a senior technical leadership opportunity within a high-growth SaaS environment, focused on building and scaling resilient cloud networking infrastructure. You will architect, automate, and support large-scale network solutions across AWS, Azure, and GCP. The role combines hands-on engineering with technical leadership, roadmap development, and service ownership. You will work extensively across Kubernetes networking, firewalls, VPNs, DNS, BGP, and infrastructure as code. Your work will directly influence platform reliability, performance, security, and operational efficiency. You will also mentor engineers, shape network strategy, and help evolve a globally distributed network function. The environment encourages autonomy, innovation, critical thinking, and an automation-first approach to solving complex infrastructure challenges. Design, deploy, automate, and support highly scalable network infrastructure across AWS, Azure, and GCP, applying established cloud architecture and networking standards. Architect and operate firewall, VPN, DNS, BGP, TLS, routing, security group, and hybrid-cloud networking solutions, including Palo Alto, Fortinet, Check Point, and cloud-native firewall technologies. Provide network engineering leadership for production Kubernetes platforms and workloads, including Kubernetes networking, CNI implementations, ingress and gateway controllers, service discovery, DNS, and NetworkPolicy. Develop and execute network infrastructure roadmaps while participating in architecture and design reviews across the broader engineering organization. Apply an automation-first and development-oriented mindset to network operations, using infrastructure as code to reduce manual work, eliminate operational toil, and improve service reliability. Build and maintain network performance, capacity, availability, and monitoring solutions, using advanced troubleshooting techniques such as packet capture and traffic-flow analysis. Lead and support network initiatives from conception through delivery and operational ownership, ensuring projects and issues are driven to successful resolution. Help grow and mature the global network engineering function by providing technical leadership, mentoring new engineers, sharing knowledge, and contributing to team direction. Stay current with evolving networking technologies, cloud infrastructure practices, and industry developments, incorporating relevant innovations into the network strategy. Actively leverage AI tools and methodologies to improve engineering workflows, accelerate problem solving, and drive infrastructure innovation. Participate in an on-call rotation and provide operational support for critical network services when required. Travel occasionally as needed to fulfill the responsibilities of the position. Requirements: Bachelor’s degree in Computer Science or a related field, or equivalent experience, with 10+ years of professional engineering experience; experience in an enterprise SaaS environment is highly valued. Deep expertise in enterprise networking, including firewalls, VPNs, DNS, BGP, TCP/IP, TLS, public-cloud networking, VPCs, hybrid routing, and security groups across AWS, Azure, and/or GCP. Proven experience managing and maintaining production Kubernetes environments, with advanced knowledge of Kubernetes networking and CNI implementations; experience with multiple CNI solutions is a plus. Strong understanding of ingress and gateway controller architectures, service discovery, DNS within Kubernetes, and NetworkPolicy functionality. Experience operating across both traditional data center and public-cloud environments, as well as supporting multiple Linux distributions. Strong programming or scripting capabilities in Golang, Python, Java, Ruby, or an equivalent lang