RF_Calibraition_Engineer
Larsen & Toubro
Lead RF calibration for Qualcomm cellular platforms, handling RFC cards, QCN, and tuning.
3 days ago ago
Intermediate (4-7 years), Experienced (8-12 years)
Full Time
Bengaluru, Karnataka, India
Onsite
Company Size
54,596 Employees
Service Specialisms
Construction services
Project Management
Engineering
Design
Technical Services
Turnkey
General Contractor
Architecture
Sector Specialisms
Buildings & Factories
Transport Infrastructure
Heavy Civil Infrastructure
Smart World & Communication
Water & Renewable Energy
Power Transmission & Distribution
Hydrocarbon (offshore and onshore projects)
Coal-based Power Plants
Role
What you would be doing
rf calibration
log debugging
antenna optimization
automation scripts
nv management
documentation
- 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
- Production Calibration Flow – Factory-line calibration using automation scripts
- Perform RF calibration for cellular platforms based on Qualcomm SoCs (e.g., QCM, QCS, SA2150, SA415M, SDX series, QCX series)
- Maintain documentation and traceability for RF performance and test results
- Automate repetitive tasks using Python/Perl scripts for efficiency in calibration and flashing
- QCN/XQCN Handling – Backup, edit, restore NV configurations
- Support EFS/NV management, RF provisioning, and board-level bring-up
- Generate and update RFC (Radio Frequency Configuration) cards for factory and production use
- Handle QCN/XQCN backup, editing, and restoration for RF parameter tuning
What you bring
diag
rfnv
qxdm
qcat
5g
bachelor's
- Diag protocol & diagnostic message decoding
- Familiarity with NV item editing, eFuse programming, and RF tuning principles
- RFNV Tool / QCN Manager / NV Manager – NV editing and configuration
- NV item structure and interdependencies
- Strong communication and teamwork skills.
- Experience with Qualcomm’s Diag protocol, QCN tools, and RF trace analysis
- RF Tuning & Optimization – Gain table tuning, PA bias, switch path config
- Strong background in wireless testing, calibration lab tools, and scripting automation
- Bachelor’s or master’s degree in Electronics/Electrical/Communications Engineering
- eFUSE Tools – eFUSE blowing for platform security and production configuration
- Deep understanding of LTE/4G/5G, GNSS, Bluetooth, and Wi-Fi RF subsystems
- Familiarity with SAR/TRP/TIS testing, antenna design, and tuning practices
- Call flow understanding: Attach, RRC, PDP contexts
- Experience with multiple Qualcomm chipsets (e.g., QCM2290, QCS2290, QCX216, SA415M, SDX55, etc.)
- Bachelor's or Master's degree in Electronics, Telecommunications, or relevant discipline
- Knowledge of eSIM/eUICC, security provisioning, and factory test flows
- Exposure to carrier certification (PTCRB, GCF, operator-specific requirements)
- QXDM – Log capture, RF trace analysis, event monitoring
- QPST/QFIL – EFS access, QCN flashing, QPST server tools
- EFS Management – File system access for provisioning and NV injection
- Solid hands-on experience with Qualcomm RF calibration tools and procedures
- RF Calibration – LTE/4G/5G, GNSS (GPS/GLONASS), Bluetooth, Wi-Fi
- Carrier Certification Support – TRP/TIS/SAR data generation, PTCRB, GCF
- Ability to adapt to a fast-paced and dynamic business environment.
- QCAT – Log post-processing and NV item analysis
- Prior experience with mass production RF calibration and automation
- QDART – RF calibration and automation interface
- RF Card Tool / RFC Generator – RFC card creation, editing, and validation
- QMSL (Qualcomm Modem Software Library) – Used for scripting RF calibration routines
Information not given or found
Training + DevelopmentInformation not given or found
Interview process
Information not given or found
Visa SponsorshipInformation not given or found
Security clearanceInformation not given or found
Company
Overview
Founded in 1946
Year Established
The company was started in 1946 by two Danish engineers.
Revenue Billions USD
Annual Revenue
The company generates tens of billions of USD annually.
- A small Bombay firm that evolved into a global powerhouse.
- Expanded into major infrastructure and industrial projects worldwide.
- Delivers EPC projects in energy, transport, and defense.
- Notable projects include power plants, metro rail systems, hydrocarbon facilities, and naval vessels across emerging markets.
- Subsidiaries like LTIMindtree and L&T Technology Services drive its footprint in digital engineering and consulting.
- Known for tackling large-scale, complex assignments in defense, power, urban transit, and marine engineering.
- Integrity and transparency in all dealings.
- Commitment to excellence and innovation.
- Customer satisfaction through quality, service, and value.
- Respect for the environment and communities.
- A culture of teamwork, collaboration, and respect for diversity of thought.
- Continuous learning, development, and growth.
- Safety as the first priority in all operations.
Net Zero by 2040
Sustainability Goal
The company aims to achieve net-zero emissions by 2040 through comprehensive sustainability initiatives.
- Implementation of energy-efficient technologies in all operations.
- Reduction in carbon footprint through sustainable practices.
- Investment in renewable energy sources like solar and wind.
- Commitment to circular economy principles in product design and waste management.
- Promotion of green building initiatives and sustainable infrastructure.
- Achieving gender balance across all levels of the organization.
- Female representation at leadership positions increased year over year.
- Commitment to gender-neutral policies and equal pay for equal work.
- Fostering an inclusive workplace through mentorship programs and training.
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