Senior Network Engineer

Senior Network Engineer Overview

As a Senior Network Engineer, you’ll play a critical role in shaping and supporting Epsilon’s global network infrastructure by designing, implementing, and solving complex network solutions across multiple datacenters and cloud environments. You’ll be part of a passionate team of network professionals, using 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 partners to ensure procedures and standards are upheld.

• Lead the design, implementation, and optimization of network services, tools, and infrastructure across on-premises, hybrid, and multi-cloud environments.
• Engineer scalable, automated cloud networking solutions using AWS VPCs, Transit Gateways, Direct Connect, Private Link, Route
  53 Resolver, GCP VPCs, Cloud Interconnect, Cloud DNS, and Azure VNets, Express Route, and Private DNS, ensuring secure and resilient connectivity.
• Build and maintain infrastructure as code using Terraform, Ansible, Cloud Formation, and Deployment Manager, ensuring configuration consistency, policy enforcement, and preventing drift.
• Develop and manage Network Dev Ops and CI/CD pipelines for network provisioning, configuration management, and observability.
• Automate provisioning, configuration, and monitoring tasks using Python, Go, Bash, and Power Shell, integrating with AWS Lambda, GCP Cloud Functions, and Azure Functions.
• Collaborate with SRE, cloud security, and platform teams to ensure alignment with zero trust, compliance frameworks, and cloud-native security controls.
• Solve complex hybrid networking issues across LAN, WAN, cloud interconnects, Internet, and routing protocols (BGP, OSPF, EVPN, VXLAN).
• Implement cloud load balancers, CDN integrations, DNS failover, and traffic steering policies for high availability and global resiliency.
• Evaluate and deploy next‑gen technologies, including service mesh, cloud‑managed firewalls, cloud‑native monitoring, and observability platforms.
• Drive adoption of standard processes for cost optimization, tagging strategies, and governance across multi‑cloud infrastructure.
• Continuously assess existing systems, identify areas for improvement, and implement effective automation‑driven solutions.
• Standardize documentation, runbooks, and design patterns for network and cloud operations.

• What you’ll bring with you:
  • 6+ years of experience supporting high‑performance production environments.
  • Proven experience designing and operating secure hybrid multi‑cloud networks, including site‑to‑site VPNs, Express Route, Direct Connect, Cloud Interconnect, and Transit Gateway topologies.
  • Strong programming and automation skills in Python, with experience in network automation frameworks and cloud SDKs/APIs (boto3, gcloud, azure‑cli).
  • Deep expertise with infrastructure as code and Dev Ops tooling (Terraform, Ansible, Git Hub Actions, Jenkins, Git Lab CI/CD, ArgoCD).
  • Advanced knowledge of networking protocols and technologies including Ethernet (10/40/100/400
    
    Gbps), OSPF, BGP, EVPN/VXLAN, IPSec, DHCP, DNS, SNMP, LACP, IPv6, and TCP.
  • Hands‑on experience with enterprise networking platforms such as Cisco Catalyst and Nexus, Dell Force
    10, Arista, F5 Big‑IP, and Palo Alto firewalls.
  • Expertise in cloud‑native firewalls and security groups, Web Application Firewalls (AWS WAF, Azure WAF, GCP Cloud Armor), and DNSSEC/DoH.
  • Proficiency with cloud‑native monitoring and observability tools (Cloud Watch, Cloud Logging, Azure Monitor, Prometheus, Grafana, Datadog).
  • Experience developing cloud networking infrastructure including DNS, CDNs, load balancers, VPCs, subnets, NAT gateways, peering, and service mesh.
  • Strong working knowledge of security frameworks and regulations (e.g., ISO 27001, NIST, PCI DSS, CIS Benchmarks).
  • Demonstrated ability to lead incident response, RCA, and performance tuning across distributed systems.
  • Familiarity with Fin Ops practices for…