Lead Test Engineer

Happiest Minds Technologies; Bengaluru; On-site; INR 1,500,000 - 2,000,000; Full time

Job summary

Happiest Minds Technologies is seeking experienced Network Test Engineers with a strong coding ability in Python. You will be responsible for validating high-performance networking features with extensive hands-on experience in L2 and L3 protocols, automation, and test framework development.

The ideal candidate will collaborate with developers and utilize tools like Pytest and Docker. This role involves testing various networking standards and ensuring high-quality standards in both traditional and containerized environments.

Qualifications

• 7–15 years of experience in network testing and automation.
• Strong hands-on experience in Python programming.
• Proficiency with Pytest and Robot Framework.

Responsibilities

• Design and execute test plans and automation scripts for L2/L3 features.
• Develop test automation frameworks using Python.
• Validate protocols across L2 and L3.

Skills

Python programming

Network testing

Test automation

L2/L3 protocols

DevOps tools

Tools

Pytest

Robot Framework

Docker

Linux OS

Job description

We are looking for experienced Network Test Engineers with strong Python coding ability to join our dynamic team responsible for validating high-performance, enterprise-grade networking features. The ideal candidates will have strong domain knowledge in L2/L3 protocols, multicast routing, automation with Python, and test framework development. Engineers will be involved in validating features across routing, switching, virtualization, and performance scenarios in both traditional networking stacks and containerized environments.

Key Responsibilities

• Design and execute comprehensive test plans and automation scripts for L2/L3 networking features from scratch.
• Develop and enhance test automation frameworks using Python, integrating with tools such as PyATS, Pytest (hands-on coding is mandatory).
• Validate protocols and features across L2 and L3 protocols (Mandatory).
• Hands on experience in IPSec, Macsec, NAT, TCP/IP and other network security protocols.
• Perform validation across different layers of a Core / Edge router and Data Center switch
• Execute system-level, regression, performance, and stress testing for high-throughput networking platforms.
• Ability to validate merchant ASIC-based switches, or platforms like Exablaze 3550.
• Validate containerized network solutions using Docker and Linux OS
• Collaborate with developers, support, and system architects to debug and resolve complex networking issues
• Participate in agile ceremonies, daily scrums, and sprint reviews for feature testing and delivery

Skills and Qualifications

• 7–15 years of experience in network testing and automation.
• Strong hands-on experience in Python programming (Mandatory)
• Proficiency in test automation tools and frameworks: Pytest, Robot Framework.
• Solid understanding and testing experience with:
• Layer 2: VLAN, LACP, vPC, Spanning Tree (STP), VXLAN, MacSec, IPSec, NAT, UDP, TCP/IP, Open SSL, Network security protocols
• Layer 3: OSPF, BGP EVPN, Layer-3 virtualization, MPLS, Transport bridging, PBB, DHCP, ACLs, QoS
• Working knowledge of Linux OS and scripting.
• Experience in validating high-speed Ethernet interfaces (10/25/40/100 Gbps).
• Familiarity with Cisco OS platforms (NX-OS, IOS, etc) and merchant silicon (ASICs)
• Proven experience on Traffic testing and Validation (using IXIA, Trex) is mandatory
• Experience testing FPGA-based switches, SmartNICs, or custom hardware platforms.
• Exposure to Exablaze 3550 or similar ultra-low latency networking products.
• Experience with containerization and testing in Docker-based environments.
• Familiarity with XML configurations and automation workflows.
• Knowledge of DevOps tools and CI/CD integration for test automation.