QA Engineer - Wireless RAN & Device (LTE/5G/Wi-fi)

Job Description: QA Engineer Wireless RAN & Device (LTE/5G/ Wi-Fi)

Role Overview

The QA Engineer – Wireless RAN & Device Validation is responsible for end-to-end validation of LTE and 5G Radio Access Network (RAN) solutions, ensuring feature compliance, RF performance, interoperability, and customer experience across commercial network deployments.

The role involves validation of eNodeB/gNodeB, vRAN/ORAN platforms, radio features, RF performance, and protocol compliance, while also supporting validation of LTE/5G devices including smartphones and FWA CPEs to ensure seamless end-to-end interoperability between network and devices. The engineer will work closely with RAN & Device Engineering, Product, Network Operations, OEMs, and chipset vendors throughout the product lifecycle.

Key Roles & Responsibilities

• Define test strategy, test plans, test cases, and RTM for LTE/5G/WiFi RAN products and wireless solutions.
• Perform end-to-end validation of LTE/LTE-A/5G NR features, covering functional, protocol, RF, interoperability, performance, regression, and customer experience testing
• Validate Macro Cells, Small Cells, vRAN/ORAN, and eNB/gNB deployments in both lab and field environments
• Execute RF validation for TDD/FDD, OFDMA, Massive MIMO, Carrier Aggregation, Beamforming, Mobility, Handover, QoS, and Throughput
• Conduct acceptance testing, benchmarking, and standards compliance validation against 3GPP and O-RAN specifications
• Analyze Layer 1–3 logs and troubleshoot air interface, S1/X2/Xn, IMS, and interoperability issues through Root Cause Analysis
• Develop and maintain OTA and conducted test lines in Lab for end-to-end RAN, Core, and Device validation
• Validate LTE/5G commercial devices (Smartphones, FWA CPEs, and data devices) to ensure network interoperability and customer experience
• Collaborate with RAN strategy/ planning, Device Engineering, Network teams, OEMs, and chipset vendors for issue resolution and product quality improvements
• Drive test automation, manage the defect lifecycle, prepare technical documentation, and provide Go/No-Go recommendations for commercial releases.

Required Skills & Technical Expertise

• Strong knowledge of LTE/LTE-A, 5G NR (NSA/SA),Wi-Fi(802.11ac/ax/be), vRAN, ORAN, IMS, RAN architecture, and 3GPP/O-RAN standards
• Good understanding of RF technologies including TDD/FDD, OFDMA, Massive MIMO, Beamforming, Carrier Aggregation, Mobility, Handover, QoS, and throughput optimization
• Hands-on experience in RAN feature, protocol, performance, KPI, capacity, stability, and interoperability testing
• Proficiency in RF and wireless test tools such as TM500, Keysight, Anritsu, QXDM, TEMS, XCAL, Wireshark, iPerf, and IxLoad
• Strong expertise in Layer 1–3 log analysis, protocol debugging (PHY, MAC, RLC, PDCP, RRC, NAS), and end-to-end call flow analysis
• Exposure to LTE/5G device validation (Smartphones, FWA CPEs, MiFi) with ADB and chipset debugging tools (Qualcomm/MediaTek/UNISOC) is an added advantage
• Knowledge of Python or similar scripting languages for test automation is desirable
• Strong analytical, troubleshooting, communication, documentation, and stakeholder management skills with the ability to work effectively in cross-functional teams.

Experience & Qualifications

• 8–12 years of experience in LTE/5G RAN Testing, RF Validation, or Telecom Product QA.
• Hands-on experience in eNodeB/gNodeB, vRAN/ORAN, RAN feature validation, RF performance, protocol analysis, and interoperability testing.
• Experience in commercial acceptance testing and field validation of LTE/5G radio products.
• Exposure to LTE/5G device validation and end-to-end network-device integration will be an added advantage.
• Bachelor's degree in Electronics, Telecommunications, or a related Engineering discipline.