Network Reliability Engineer L3/L4

Teceze; Burlington (NJ); On-site; USD 130,000 - 190,000; Full time

Job summary

Teceze seeks a Network Reliability Engineer to design and implement robust network services with Python, Django, and PostgreSQL. You will build REST/GraphQL APIs, automate operations, and deploy using Docker/Kubernetes in a fast-paced enterprise environment.

The role emphasizes NetDevOps practices, IaC with Terraform/Ansible, and integration with ServiceNow and vendor APIs. A strong background in HA, observability, and complex troubleshooting is required.

Qualifications

• 8+ years in enterprise networks (LAN/WAN/WLAN/DC) including security and data centers.
• Strong backend skills in Python, Django, and PostgreSQL.
• Experience building REST and GraphQL APIs.
• Hands-on with Docker and Kubernetes for app deployment.
• Automation with Terraform, Ansible, and NetBox/Nautobot.
• CI/CD expertise with GitLab CI, Jenkins, or GitHub Actions.
• Integration work with ServiceNow, Git, and vendor APIs.
• UI full-stack experience with JS and HTML catalogs.

Responsibilities

• 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.

Skills

Network engineering

NetDevOps / SRE mindset

Automation expertise

Troubleshooting complex networks

Observability practices

Tools

Python

Django

PostgreSQL

Docker

Kubernetes

Terraform

Ansible

NetBox/Nautobot

ServiceNow

Git

REST/GraphQL

GitHub Actions

GitLab CI

Jenkins

Netmiko

NAPALM

pyATS

Prometheus

Grafana

Splunk

Job description

Job Description – Network Reliability Engineer L3/L4

Experience

8+ years of experience supporting enterprise network environments across LAN, WAN, WLAN, Security, and Data Center technologies.

Key Responsibilities:

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.
• 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.
• High Availability (HA) Deployment & Troubleshooting
• Observability: Experience with at least one monitoring stack (SolarWinds, Cisco DNAC, Thousand Eyes, 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.
• 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.
• Create and maintain runbooks, playbooks, and documentation for ops teams.
• Mentor engineers on Net DevOps, automation, and reliability best practices.
• Forti Authenticator (MFA, RADIUS, TACACS+)
• Fort iOS Upgrades, Patching & Lifecycle Management

Firewall & Security Skill :

• Security Policy Design & Optimization
• IPS, Antivirus & Application Control
• Web Filtering & DNS Filtering
• SSL Inspection & Decryption
• Threat Prevention & Security Hardening