SR QA SW ENGINEER 10381- Layer2/Layer3 Protocol Testing- Python |Data Center Networking

Extremenetworks; Chennai District; On-site; INR 1,800,000 - 2,400,000; Full time

Job summary

Extremenetworks is seeking a Principal QA Software Engineer in Chennai region to validate end-to-end solutions across data center and 5G networking environments. The role combines manual and automated testing, with a focus on IP fabric-based solutions, using Python and Go (Golang) for robust validation frameworks.

Key tasks include designing test plans, building automation, validating 5G data center architectures, and supporting CI/CD pipelines.

Qualifications

• Proficient in Python (must-have) for automation and validation.
• Strong Golang skills are a plus for automation work.
• Extensive experience with data center networking (Leaf-Spine, IP Fabric).
• Familiar with EVPN, VXLAN, BGP, and TCP/IP protocols.
• Experience validating 5G architectures and related testing.
• Proficient with Linux and scripting for test environments.
• Experience with packet analysis tools such as Wireshark and tcpdump.

Responsibilities

• Design, develop, and execute test plans and test cases for complex networking solutions (L2/L3, IP Fabric, EVPN/VXLAN).
• Validate 5G and data center architectures, including integration, scalability, and performance testing.
• Build and maintain automation frameworks using Python and Golang.
• Perform manual testing for new features, exploratory validation, and edge-case scenarios.
• Develop end-to-end solution validation, including interoperability and system-level testing.
• Automate regression, functional, and performance test suites.
• Troubleshoot and debug issues across network, system, and application layers.
• Collaborate with engineering, QA, and product teams to ensure high-quality releases.
• Analyze logs, packet captures, and system behavior to identify root cause issues.
• Support CI/CD pipelines and continuous testing strategy.

Skills

Python

Golang

Data center networking

IP Fabric

EVPN

VXLAN

BGP

5G validation

Linux scripting

Packet analysis

CI/CD

Kubernetes

Docker

Tools

Wireshark

tcpdump

Kubernetes

Docker

Job description

Role Overview:

Experience: 5-10 Years

Role: PRINCIPAL QA SW ENGINEER

We are seeking a highly skilled Solution Test Engineerto validate end-to-end solutions across modern data center and 5G networking environments. This role combines manual and automated testing, ensuring high-quality delivery of IP fabric-based solutions through robust validation frameworks developed in Python and Go (Golang).

Key Responsibilities

• Design, develop, and execute test plans and test casesfor complex networking solutions (L2/L3, IP Fabric, EVPN/VXLAN)
• Validate 5G and data center architectures, including integration, scalability, and performance testing
• Build and maintain automation frameworksusing Python and Golang
• Perform manual testingfor new features, exploratory validation, and edge-case scenarios
• Develop end-to-end solution validation, including interoperability and system-level testing
• Automate regression, functional, and performance test suites
• Troubleshoot and debug issues across network, system, and application layers
• Collaborate with engineering, QA, and product teams to ensure high-quality releases
• Analyze logs, packet captures, and system behavior to identify root cause issues
• Support CI/CD pipelines and continuous testing strategy.

Required Skills

Technical

• Strong programming skills in:
  • Python (must-have)
  • Golang (preferred / strong plus)
• Solid understanding of:
  • Data center networking (Leaf-Spine, IP Fabric, Clos architectures)
  • Protocols: BGP, EVPN, VXLAN, TCP/IP
• Experience in 5G technologies(Core, RAN, or transport network validation)
• Hands-on experience with:
  • Test automation frameworks
  • Linux systems and scripting
• Proficiency in:
  • Packet analysis tools (Wireshark, tcpdump)
  • Debugging distributed systems and network issues.

Preferred Qualifications

• Experience with CI/CD pipelines(Jenkins, GitLab CI, etc.)
• Exposure to cloud-native and container environments (Kubernetes, Docker)
• Knowledge of network virtualization and SDN
• Familiarity with test frameworks (pytest, Robot Framework, custom frameworks)
• Understanding of telecom standards and 5G architecture