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
- 1. 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
- 2. 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.
- 3. Load & Scalability Testing
- Validate performance under high client density scenarios.
- Simulate concurrent traffic (VoIP, video streaming, web traffic).
- 4. Interference Testing
- Test performance under co-channel and adjacent channel interference.
- Evaluate performance in 2.4GHz, 5GHz, and 6GHz bands.
- 5. Automation & Scripting
- Develop automation scripts using C Sharp, Python.
- Automate log collection, KPI extraction and triaging.
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- 6. 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.
7. Establish performance benchmarks and release qualification criteria
8. Mentor engineers, review test strategy/design and promote testing best practices
9. 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.
