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▷ Apply Now! RF Calibration Engineer
L&T Semiconductor TechnologiesBengaluru, Karnataka, India11 hours ago
Job descriptionSolid 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 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 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 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 LTE Bands, Band combinations, Carrier Aggregation Diag protocol & diagnostic message decoding Call flow understanding : Attach, RRC, PDP contexts NV item structure and interdependencies 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.
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
Qualifications :
Technical And Behavioural Skills
Technical Skills :
Qualcomm Tools & Platforms :
Calibration & Testing :
Modem & Protocol Stack Knowledge :
Behavioural Skills :
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Calibration Engineer • Bengaluru, Karnataka, India
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