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 resultsExperience and QualificationExperience: 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 disciplineQualifications:- 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 analysisTechnical And Behavioural SkillsTechnical 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 configurationCalibration & 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, GCFModem & 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 interdependenciesBehavioural 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.