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Overview About Business Unit: At the core of all that Epsilon does is a team that sets the foundation of our IT infrastructure. The team drives innovation and efficiency through pioneering technology across Epsilon's platforms and business verticals. From being the first point of contact for infrastructure needs to final deployment, the team provides end-to-end solutions for our client-facing platforms. ETS supports all aspects of revenue-generating platforms for Epsilon and sets the architectural direction for our enterprise deployments. By adopting the newest technologies, such as Cloud, Automation, and Artificial Intelligence, the team is at the front of redefining our digital business and capturing new opportunities. How You’ll Make an Impact: As a Lead Network Engineer, you will play a key technical leadership role responsible for designing, implementing, and supporting Epsilon’s global network infrastructure across multiple datacenters and cloud providers. You will act as a senior technical authority within the network engineering organization, guiding architecture decisions, mentoring engineers, and driving the development of scalable, automated, and highly available network solutions that support Epsilon’s global production environment. Epsilon’s network spans multiple global datacenters, hybrid multi-cloud environments, MPLS connectivity, Internet peering infrastructure, and low-latency application delivery platforms that support high-performance advertising technology workloads operating 24x7x365. As a Lead Network Engineer, you will translate business and technical requirements into network architecture and design, implementing industry guidelines, operational standards, and automation at scale. This role requires deep expertise in datacenter networking, routing, switching, traffic management, and network security, combined with strong troubleshooting capabilities and experience operating in a highly distributed production environment. You will collaborate with internal teams, vendors, and leadership to design and deploy reliable infrastructure that supports Epsilon’s performance, security, and scalability requirements. If you are a highly motivated, detail oriented network professional passionate about designing resilient infrastructure and mentoring other engineers, we’d love to speak with you about joining our team. Click here to view how Epsilon transforms marketing with 1 View, 1 Vision and 1 Voice. Responsibilities Lead the architecture, design, and implementation of network infrastructure across Epsilon’s global datacenter and hybrid cloud environments. Translate business and application requirements into scalable, high-performance network architectures supporting low-latency workloads and large-scale data processing platforms. Design and deploy secure hybrid multi-cloud connectivity architectures across AWS, Azure, and GCP using standard processes for routing, segmentation, and high availability. Develop and implement network automation frameworks using Python and infrastructure-as-code tools such as Terraform and Ansible to manage network configurations at scale. Architect and optimize datacenter network fabrics using modern technologies such as VXLAN, ECMP, and high-speed Ethernet (10/40/100/400Gbps). Lead engineering efforts to deploy and optimize traffic management platforms including enterprise load balancing and traffic steering technologies. Provide technical leadership and mentorship to network engineers while promoting best practices, documentation standards, and automation-first operational models. Serve as a technical escalation point for complex network incidents impacting production services across LAN, WAN, Internet, and cloud connectivity. Design and implement network security solutions including segmentation, firewall architectures, and intrusion prevention systems to protect critical infrastructure. Collaborate with SRE, cloud engineering, security, and platform teams to ensure infrastructure meets performance, security, and compliance requirements. Evaluate emerging networking technologies and drive adoption of solutions that improve performance, scalability, automation, and operational efficiency. Work with vendors and internal teams to manage projects from architecture through implementation and operational support. Coordinate and implement network maintenance activities, upgrades, and change management processes with clear communication and minimal business impact. Develop and maintain technical documentation, architecture diagrams, and operational procedures to support knowledge sharing and operational continuity. Participate in incident response, root cause analysis, and continuous improvement initiatives to improve reliability and reduce operational risk. Provide operational support for the global production network, ensuring availability and performance of critical services. Qualifications Who You Are: What you’ll bring with you: 8–12+ years of experience supporting enterprise or service-provider scale production networks with 24x7 operational requirements. Strong expertise in WAN routing topologies, datacenter switching architecture, VPN technologies, firewalling, and traffic management solutions. Deep working knowledge of networking protocols and technologies including: Ethernet (10/40/100/400Gbps) BGP OSPF Spanning Tree (RSTP, MSTP, PVST+) LACP IPSec DHCP DNS SNMP IPv6 TCP optimization and performance tuning Experience designing and operating secure hybrid multi-cloud network architectures across AWS, Azure, and GCP. Solid experience with cloud connectivity models including Direct Connect, ExpressRoute, and private interconnect architectures. Proficiency in network automation using Python, and experience building automation workflows for provisioning, monitoring, and configuration management. Experience implementing Infrastructure as Code (IaC) practices using Terraform, Ansible, or similar tools. Hands-on experience with enterprise networking platforms including: Cisco Catalyst routers and switches Cisco Nexus datacenter platforms Dell Force10 switches Arista network platforms Experience designing and operating enterprise load balancing platforms, including: F5 BIG-IP Citrix NetScaler Experience with network virtualization technologies including VXLAN and MPLS. Solid background in network security architecture, including traditional and next-generation firewalls such as Palo Alto Networks. Experience working with enterprise network observability and monitoring platforms including: SolarWinds NPM / NCM ExtraHop AlgoSec NetBrain Demonstrable ability solve issues across network, operating system, and application layers. Solid experience working with vendors to troubleshoot complex infrastructure issues and implement solutions. Experience coordinating and performing network upgrades, maintenance windows, and production changes. Excellent written and verbal communication skills with the ability to communicate complex technical concepts clearly. Self-starter capable of working independently with minimal supervision while driving projects forward. Cisco CCNP certification preferred; additional certifications from Cisco, Palo Alto, or cloud providers are highly desirable. Ability to support after-hours maintenance and occasional travel when required. Why you might stand out from other talent: Experience designing and operating large-scale, low-latency datacenter networks supporting high-performance application platforms. Experience working within global service provider or advertising technology infrastructures with complex traffic patterns. Demonstrated leadership mentoring engineers and guiding architecture decisions across distributed engineering teams. Experience deploying automation-first network operations models within enterprise or hybrid cloud environments. Experience integrating observability, telemetry, and AI driven operational insights into network operations. Proven success driving standardization, scalability, and operational efficiency improvements within complex enterprise network environments. Additional Information Epsilon is a global data, technology and services company that powers the marketing and advertising ecosystem. For decades, we’ve provided marketers from the world’s leading brands the data, technology and services they need to engage consumers with 1 View, 1 Vision and 1 Voice. 1 View of their universe of potential buyers. 1 Vision for engaging each individual. And 1 Voice to harmonize engagement across paid, owned and earned channels. Epsilon’s comprehensive portfolio of capabilities across our suite of digital media, messaging and loyalty solutions bridge the divide between marketing and advertising technology. We process 400+ billion consumer actions each day using advanced AI and hold many patents of proprietary technology, including real-time modeling languages and consumer privacy advancements. Thanks to the work of every employee, Epsilon has been consistently recognized as industry-leading by Forrester, Adweek and the MRC. Epsilon is a global company with more than 9,000 employees around the world. Our pillars aren't just words. They're how we show up every day. People centricity: We focus on employee well-being in an environment where colleagues truly care about each other. Collaboration: We work together, support one another, and collectively achieve goals. Growth: There are endless opportunities for growth through learning, development and career advancement. Innovation: We drive progress through cutting-edge solutions and forward-thinking approaches. Flexibility: We’ve created a balance between work and personal life, and we encourage adaptability to solve problems creatively. Our values guide us to create value for our clients, our people and consumers. Act with integrity Work together to win together Innovate with purpose Respect all voices Empower with accountability These pillars and values are our foundation—shaping our culture, guiding our decisions, and uniting us in common purpose. Epsilon is an Equal Opportunity Employer. Epsilon is committed to promoting diversity, inclusion, and equal employment opportunities by using reasonable efforts to attract, recruit, engage and retain qualified individuals of all ethnicities and backgrounds, including, but not limited to, women, people of color, LGBTQ individuals, people with disabilities and any other underrepresented groups, traits or characteristics.
