Rf Calibration Engineer

We are seeking a skilled and experienced RF Calibration Engineer with hands-on expertise in Qualcomm cellular platform to lead and execute RF calibration activities including RFC card generation, QCN/XQCN handling, and RF tuning. The candidate will play a critical role in ensuring optimal RF performance across LTE, GPS, Wi-Fi, and Bluetooth subsystems. Areas Of Responsibility - Perform RF calibration for cellular platforms based on Qualcomm SoCs (e.G., QCM, QCS, SA2150, SA415M, SDX series, QCX series) - Generate and update RFC (Radio Frequency Configuration) cards for factory and production use - Handle QCN/XQCN backup, editing, and restoration for RF parameter tuning - Conduct calibration procedures using Qualcomm toolchain: QPST, QXDM, QDART, QCAT, and QMSL - Analyze and debug RF logs, NV configurations, and RF signal performance - Coordinate with hardware and modem teams to optimize antenna and RF path - Support EFS/NV management, RF provisioning, and board-level bring-up - Automate repetitive tasks using Python/Perl scripts for efficiency in calibration and flashing - Maintain documentation and traceability for RF performance and test results Experience and Qualification Experience: 5 to 10 yrs - Solid hands-on experience with Qualcomm RF calibration tools and procedures - Experience with multiple Qualcomm chipsets (e.G., QCM2290, QCS2290, QCX216, SA415M, SDX55, etc.) - Deep understanding of LTE/4G/5G, GNSS, Bluetooth, and Wi-Fi RF subsystems - Familiarity with NV item editing, eFuse programming, and RF tuning principles - Strong background in wireless testing, calibration lab tools, and scripting automation - Bachelor's or Master's degree in Electronics, Telecommunications, or relevant discipline Qualifications: - Prior experience with mass production RF calibration and automation - Exposure to carrier certification (PTCRB, GCF, operator-specific requirements) - Familiarity with SAR/TRP/TIS testing, antenna design, and tuning practices - Knowledge of eSIM/eUICC, security provisioning, and factory test flows - Experience with Qualcomm’s Diag protocol, QCN tools, and RF trace analysis Technical And Behavioural Skills Technical Skills : Qualcomm Tools & Platforms: - QXDM – Log capture, RF trace analysis, event monitoring - QPST/QFIL – EFS access, QCN flashing, QPST server tools - QCAT – Log post-processing and NV item analysis - QDART – RF calibration and automation interface - QMSL (Qualcomm Modem Software Library) – Used for scripting RF calibration routines - RFNV Tool / QCN Manager / NV Manager – NV editing and configuration - RF Card Tool / RFC Generator – RFC card creation, editing, and validation - eFUSE Tools – eFUSE blowing for platform security and production configuration Calibration & Testing: - RF Calibration – LTE/4G/5G, GNSS (GPS/GLONASS), Bluetooth, Wi-Fi - QCN/XQCN Handling – Backup, edit, restore NV configurations - EFS Management – File system access for provisioning and NV injection - RF Tuning & Optimization – Gain table tuning, PA bias, switch path config - Production Calibration Flow – Factory-line calibration using automation scripts - Carrier Certification Support – TRP/TIS/SAR data generation, PTCRB, GCF Modem & Protocol Stack Knowledge: - LTE Bands, Band combinations, Carrier Aggregation - Diag protocol & diagnostic message decoding - Call flow understanding: Attach, RRC, PDP contexts - NV item structure and interdependencies Behavioural Skills: - Strong communication and teamwork skills. - Ability to adapt to a fast-paced and dynamic business environment. - Detail-oriented with a focus on quality and accuracy. - Proactive and self-motivated with a results-oriented mindset.