Senior Network Engineer

Senior Network EngineerAs a Senior Network Engineer, you'll play a critical role in shaping and supporting Epsilon's global network infrastructure by designing, implementing, and troubleshooting complex network solutions across multiple datacenters and cloud environments. You'll be part of a passionate team of network professionals, leveraging your deep expertise in routing, switching, load balancing, and network security to implement scalable, automated solutions that meet demanding 24x7x365 operational requirements. Your work will directly influence the performance and reliability of our internal and edge Internet/peering infrastructure, and you'll collaborate closely with vendors and internal stakeholders to ensure best practices and standards are upheld. If you're a detail-oriented engineer eager to grow and make a meaningful impact in a dynamic, service-based enterprise environment, we'd love to connect with you.ResponsibilitiesLead the design, implementation, and optimization of network services, tools, and infrastructure across on-premises and cloud environments.Engineer scalable, automated network solutions using Cisco, Palo Alto, F5, AWS, GCP, and Azure, with a focus on hybrid and multi-cloud deployments.Build and maintain infrastructure as code using DevOps tools like Puppet and Terraform, ensuring configuration consistency and preventing drift.Develop and manage Network DevOps and CI/CD pipelines to automate deployment, provisioning, and monitoring.Automate configuration and management tasks using scripting languages and tools.Collaborate with SRE and security teams to ensure secure, compliant, and up-to-date cloud infrastructure.Troubleshoot complex network issues across LAN, WAN, Cloud, Internet, and routing protocols (BGP, OSPF), serving as a technical SME and escalation point.Monitor network performance and design high-availability solutions with redundancy and failover mechanisms.Evaluate and deploy next-gen technologies, including cloud-managed networks, and drive adoption of best practices.Collaborate with cross-functional teams to define technical requirements, project objectives, and deliver strategic guidance throughout the project lifecycle.Continuously assess existing systems, identify areas for improvement, and propose effective solutions.Drive standardization, documentation, and automation across all network and cloud platforms.Additional responsibilities as assigned.Qualifications10+ years of experience supporting high performance production environments.Deep expertise in WAN and routing topologies, datacenter switching architectures, firewall concepts, and traffic management technologies such as load balancing and ECMP.Proven experience designing and operating secure hybrid multi-cloud networks (AWS, GCP, Azure), including cloud connectivity models and infrastructure as code.Strong programming skills in Python and experience with network automation frameworks.Proficient with Infrastructure as Code tools such as Terraform and Ansible to manage network configurations at scale.Advanced knowledge of networking protocols and technologies including Ethernet (10/40/100/400Gbps), OSPF, BGP, Spanning Tree variants, IPSec, DHCP, DNS, SNMP, LACP, IPv6, and TCP.Hands-on experience with enterprise networking platforms such as Cisco Catalyst and Nexus, Dell Force10, Arista, Citrix NetScaler, and F5 Big IP.Expertise in traditional and next-generation firewalls, intrusion prevention systems leveraging Cisco and Palo Alto Networks solutions.Proficiency with network monitoring and management tools such as SolarWinds NPM/NCM, ExtraHop, AlgoSec, and NetBrain.Experience developing cloud networking infrastructure including DNS, CDNs, load balancers, VPCs, subnets, and security groups.Strong communication skills and the ability to document and share troubleshooting procedures effectively.Strong working knowledge of security frameworks and regulations (e.g., ISO 27001, NIST, PCI DSS).Self-starter with the initiative to work independently and drive tasks to completion with minimal supervision.Demonstrated ability to troubleshoot issues across network, OS, and application layers.Proven track record of leading incident response and root cause analysis across complex, distributed systems.Familiarity with observability platforms, dashboard creation, and actionable alerting.Ability to mentor junior team members and lead technical discussions with cross-functional teams.Certifications from major cloud platforms, Cisco, and Palo Alto.Participate in after-hours on-call rotation as needed.Why you might stand out from other talent:Experience designing, implementing, maintaining, secure on-premise and cloud network environments.Experience driving automation adoption across network and cloud environments.Experience working in complex service provider or multi-product organizations.Experience working effectively with technology, security, and business partners for cross-functional initiatives.Led transformational changes for improved operational efficiency via process optimization, automation, and best practice implementation.Demonstrable knowledge of modern technologies, including AI and machine learning, to enhance IT operations and client engagement.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. 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.As an Epsilon employee, you deserve perks and benefits that put you, your family and your finances first. Our benefits encompass a wide range of offerings, including but not limited to the following: Time to Recharge: Flexible time off (FTO), 15 paid holidays Time to Recover: Paid sick time Family Well-Being: Parental/new child leave, childcare & elder care assistance, adoption assistance Extra Perks: Comprehensive health coverage, 401(k), tuition assistance, commuter benefits, professional development, employee recognition, charitable donation matching, health coaching and counseling Epsilon benefits are subject to eligibility requirements and other terms. Epsilon is an Equal Opportunity Employer. Epsilon's policy is not to discriminate against any applicant or employee based on actual or perceived race, age, sex or gender (including pregnancy), marital status, national origin, ancestry, citizenship status, mental or physical disability, religion, creed, color, sexual orientation, gender identity or expression (including transgender status), veteran status, genetic information, or any other characteristic protected by applicable federal, state or local law. Epsilon also prohibits harassment of applicants and employees based on any of these protected categories. Epsilon will provide accommodations to applicants needing accommodations to complete the application process. Please reach out to View email address on click.appcast.io to request an accommodation. For San Francisco Bay and Los Angeles Areas: Epsilon will consider for employment qualified applicants with criminal histories in a manner consistent with the City of Los Angeles' Fair Chance Initiative for Hiring Ordinance and San Francisco Police Code Sections 4901-4919, commonly referred to as the San Francisco Fair Chance Ordinance. Applicants with criminal histories are welcome to apply.Compensation Range: USD $88,900.00 - USD $165,100.00/Annually. This is the pay range the Company believes it will pay for this position at the time of this posting. Consistent with applicable law, compensation will be determined based on the skills