> Markdown version of [/jobs/ext/3115106-network-reliability-engineer-l3-l4](https://www.wearedevelopers.com/jobs/ext/3115106-network-reliability-engineer-l3-l4). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Network Reliability Engineer L3/L4 - **Company:** HCL America Inc. - **Location:** Croydon, PA, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** HTML, Wireless LAN, Application Programming Interfaces (APIs), Backup Devices, Border Gateway Protocol, Complex Networks, Computer Networks, Continuous Integration, Data Centers, Dynamic Host Configuration Protocol, Django Web Framework, Domain Name System (DNS), Enhanced Interior Gateway Routing Protocol, Github, Hot Standby Router Protocol, Virtual Private Networks (VPN), Python (Programming Language), PostgreSQL, MongoDB, Network Planning and Design, Cisco Nexus Switches, Open Shortest Path First (OSPF), RabbitMQ, Redis, Ansible, Prometheus, TCP/IP, Virtual Local Area Networks, Virtual Router Redundancy Protocols, Wide Area Networks, Data Processing, Load Balancing, Computer Network Operations, Computer Network Technologies, Grafana, Reliability of Systems, Firewalls (Computer Science), Infrastructure as Code (IaC), Backend, Git, Gitlab-ci, SolarWinds (Software), Graphql, Routing & Switching, Celery, Terraform, Open Network Automation Platform, Splunk, Cisco, Docker, Jenkins, Servicenow - **Published:** September 27, 2026 - **Apply:** https://www.disabledperson.com/jobs/75533699-network-reliability-engineer-l3-l4 ## About the Role 10 + years of experience supporting enterprise network environments across LAN, WAN, WLAN, Security, and Data Center technologies. ## Description * Develop backend and full-stack features using Python, Django, and PostgreSQL. * Build and maintain REST / GraphQL APIs. * Create automation workflows for network operations and approvals. * Work with MongoDB, Redis, Celery, and RabbitMQ for data handling and background tasks. * Deploy and manage applications using Docker and Kubernetes. * Support automation using Terraform and Ansible. * Build CI/CD pipelines using GitLab CI, Jenkins, or GitHub Actions. * Integrate with tools such as ServiceNow, Git, and network vendor APIs. * UI full stack experience for JS and HTML catalogs creations. Technical Skills * Experience in network engineering / NOC / NRE / NetDevOps roles. * Core Networking: Strong in Routing & Switching (BGP, OSPF, EIGRP, STP, VLANs, VRFs, HSRP/VRRP, etc.). * Network Domains: Hands-on in one or more areas - Enterprise LAN/WAN, SD-WAN, Data Center (Nexus/ACI), WLAN, firewalls, or load balancers. * Automation & NetDevOps: * Design, build, and maintain network automation using Python, Ansible, Terraform, Git, CI/CD. * Implement Infrastructure as Code (IaC) for configuration and lifecycle management. * Integrate workflows with Source of Truth (NetBox/Nautobot) and ITSM tools (ServiceNow). * Develop reusable modules, playbooks, and pipelines for provisioning, upgrades, backups, and compliance. * Use Python with network libraries (Netmiko, NAPALM, pyATS, etc. as a plus). * Git & CI/CD: Comfortable with Git (branches, merge requests) and basic CI/CD pipelines. * Observability: Experience with at least one monitoring stack (SolarWinds, Cisco DNAC, ThousandEyes, Prometheus/Grafana, Splunk/ELK, etc.). * Protocols & Troubleshooting: Strong understanding of TCP/IP, DNS, DHCP, VPNs, QoS, and proven ability to troubleshoot complex network issues under pressure. * Collaboration & Design: * Work closely with network architects, operations, SRE, and application teams to embed reliability by design. * Contribute to network design reviews focusing on resilience, failure domains, capacity, and automation readiness. * Documentation & Mentoring: * Create and maintain runbooks, playbooks, and documentation for ops teams. * Mentor engineers on NetDevOps, automation, and reliability best practices. ## Related Videos - [How Cisco embraced a DevOps culture within its network engineering team](https://www.wearedevelopers.com/videos/99-how-cisco-embraced-a-devops-culture-within-its-network-engineering-team) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Your Infrastructure Is Not a Playground: AI Agents for Infra Done Right](https://www.wearedevelopers.com/videos/2084-your-infrastructure-is-not-a-playground-ai-agents-for-infra-done-right) - [Computer Vision from the Edge to the Cloud done easy](https://www.wearedevelopers.com/videos/263-computer-vision-from-the-edge-to-the-cloud-done-easy) - [NoLoJS - Avoiding JavaScript Cruft with HTML and CSS - Aaron T. 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