WLAN Performance Testing - Staff Engineer

Qualcomm; Chennai District; On-site; INR 4,000,000 - 7,000,000; Full time

Job summary

Qualcomm India Private Limited in Chennai is seeking a WLAN Performance Test Engineer to validate throughput, latency, RF performance and power efficiency of Wi-Fi products under real-world and lab conditions.

You will work across 802.11 standards, perform RF/OTA testing, use iPerf, Spirent, IXIA, Wireshark, and develop automation scripts in C# and Python to streamline test cycles and report KPI-backed insights.

Qualifications

• Bachelor’s or Master’s degree in Engineering, Information Systems, CS, or related field.
• 10-15+ years of WLAN System or performance validation experience.
• Strong understanding of IEEE 802.11 standards (a/b/g/n/ac/ax/be), OFDM, MIMO, MU-MIMO, QoS (WMM).
• Experience with IXIA / Spirent / Keysight test equipment, iPerf, Wireshark.
• Knowledge of TCP/IP stack and experience in Layer 2/Layer 3 networking.
• Experience with log analysis tools (Wireshark, tcpdump).
• Automation framework development experience.

Responsibilities

• Performance Validation
• Conduct throughput testing using iPerf, IxChariot, octoScope, Spirent, or IXIA.
• Validate performance across different Wi-Fi standards (802.11ac/ax/be).
• Measure PHY data rate, throughput, Packet loss, Jitter, Latency, retransmission rate
• RF & OTA (Over-the-Air) Testing
• Perform RF validation including RvR, RSSI, SNR,Adjacent channel interference
• Simulate customer field environment and test performance with different devices including iOS, Mac, Android, Windows
• Execute testing inside shield boxes or anechoic chambers.
• Load & Scalability Testing
• Validate performance under high client density scenarios.
• Simulate concurrent traffic (VoIP, video streaming, web traffic).
• Interference Testing
• Test performance under co-channel and adjacent channel interference.
• Evaluate performance in 2.4GHz, 5GHz, and 6GHz bands.
• Automation & Scripting
• Develop automation scripts using C Sharp, Python.
• Automate log collection, KPI extraction and triaging.
• Debug & Root Cause Analysis
• Analyze packet captures (Wireshark).
• Interpret logs from AP, STA, and driver layers.
• Work with firmware and PHY teams for issue resolution.
• Establish performance benchmarks and release qualification criteria
• Mentor engineers, review test strategy/design and promote testing best practices
• Support customer escalations with in-depth performance analysis.

Skills

WLAN performance validation

IEEE 802.11 standards

iPerf

Spirent

IXIA

Wireshark

C#

Python

Automation framework development

RF testing

Power efficiency testing

Education

Bachelor's degree in Engineering/IS/CS

Master's degree in Engineering/IS/CS

PhD in Engineering/IS/CS

Tools

IXIA

Spirent

Keysight

Wireshark

Job description

Company

Qualcomm India Private Limited

Job Area

Engineering Group, Engineering Group > Systems Test Engineering

General Summary

The WLAN Performance Test Engineer is responsible for validating the throughput, latency, RF performance of Wi-Fi products and Power efficiency under various real-world and lab conditions. The role ensures compliance with IEEE 802.11 standards and identifies performance bottlenecks at PHY/MAC layers.

Key Responsibilities

• Performance Validation
• Conduct throughput testing using tools such as iPerf, IxChariot, octoScope, Spirent, or IXIA.
• Validate performance across different Wi-Fi standards (802.11ac/ax/be).
• Measure PHY data rate, throughput, Packet loss, Jitter, Latency, retransmission rate
• RF & OTA (Over-the-Air) Testing
• Perform RF validation including RvR, RSSI, SNR,Adjacent channel interference
• Simulate customer field environment and test performance with different devices including iOS, Mac, Android, Windows
• Execute testing inside shield boxes or anechoic chambers.
• Load & Scalability Testing
• Validate performance under high client density scenarios.
• Simulate concurrent traffic (VoIP, video streaming, web traffic).
• Interference Testing
• Test performance under co-channel and adjacent channel interference.
• Evaluate performance in 2.4GHz, 5GHz, and 6GHz bands.
• Automation & Scripting
• Develop automation scripts using C Sharp, Python.
• Automate log collection, KPI extraction and triaging.
• Debug & Root Cause Analysis
• Analyze packet captures (Wireshark).
• Interpret logs from AP, STA, and driver layers.
• Work with firmware and PHY teams for issue resolution.
• Establish performance benchmarks and release qualification criteria
• Mentor engineers, review test strategy/design and promote testing best practices
• Support customer escalations with in-depth performance analysis.

Required Skills & Qualification

• Education: Bachelor’s or Master’s degree
• 10-15+ years of experience in WLAN System or performance validation
• Wireless Protocols: Strong understanding of IEEE 802.11 standards (a/b/g/n/ac/ax/be), OFDM, MIMO, MU-MIMO, QoS (WMM)
• Tools: Experience with IXIA / Spirent / Keysight test equipment, iPerf, Wireshark
• Networking: Knowledge of TCP/IP stack and preferred experience in Layer 2/Layer 3 networking.
• Analytical tools: Expertise in log analysis tools (Wireshark, tcpdump) for troubleshooting connectivity and performance issues
• Automation framework development experience

Minimum Qualifications

Bachelor's degree in Engineering, Information Systems, Computer Science, or related field and 4+ years of Systems Test Engineering or related work experience.

OR

Master's degree in Engineering, Information Systems, Computer Science, or related field and 3+ years of Systems Test Engineering or related work experience.

OR

PhD in Engineering, Information Systems, Computer Science, or related field and 2+ years of Systems Test Engineering or related work experience.

Applicants

Qualcomm is an equal opportunity employer. If you are an individual with a disability and need an accommodation during the application/hiring process, rest assured that Qualcomm is committed to providing an accessible process. You may e-mail [e-mail] or call Qualcomm's toll-free number found here. Upon request, Qualcomm will provide reasonable accommodations to support individuals with disabilities to be able participate in the hiring process. Qualcomm is also committed to making our workplace accessible for individuals with disabilities. (Keep in mind that this email address is used to provide reasonable accommodations for individuals with disabilities. We will not respond here to requests for updates on applications or resume inquiries).

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