Ericsson
Website:
ericsson.com
Job details:
Ericsson Enterprise Wireless Solutions is establishing its first India‑based modem engineering team in Bangalore, spanning modem baseband, platform, and RF software development in close collaboration with global Ericsson teams and Qualcomm partners. This founding team is shaping next‑generation enterprise and industrial 5G solutions on advanced SDX‑based platforms.
As a Modem RF Software Engineer, you will play a central role in delivering carrier‑grade RF performance across bands and regions. This is a ground‑up opportunity to influence RF architecture early, take strong technical ownership, and deliver high‑performance, power‑efficient 5G modem platforms deployed at global scale.
Role Overview
In this role, you will work at the intersection of RF hardware, modem firmware, and platform software, leading RF front‑end integration, tuning, and validation for Qualcomm SDX‑based LGA modem modules. You will be responsible for ensuring RF performance, stability, and carrier readiness across diverse deployment environments.
What You Will Do
RF Front‑End Integration (40%)
• Integrate third‑party RF front‑end modules (Skyworks, Qorvo, Broadcom, Murata) with Qualcomm modem platforms
• Develop RF control software and drivers using RFFE, MIPI, SPI, and I2C
• Implement control and coordination for PA, LNA, RF switches, and antenna tuners
RF Tuning & Optimization (30%)
• Perform RF calibration, tuning, and characterization across multiple bands and carriers
• Optimize transmit power, receive gain, and antenna tuning algorithms
• Analyze RF KPIs including RSSI, RSRP, RSRQ, SINR, EVM, and ACLR
• Tune RF performance to meet carrier and regulatory requirements
Driver Development & Integration (20%)
• Develop and customize Linux kernel drivers for RF components
• Integrate and adapt Qualcomm AMSS/MPSS RF drivers
• Implement RF‑related power management and debug HW/SW integration issues
Testing & Validation (10%)
• Develop and support automated RF test frameworks
• Perform conducted and OTA RF testing
• Support carrier certification activities (PTCRB, GCF)
Required Skills
• 7+ years (Senior) or 10+ years (Staff) of RF software development for cellular systems
• 5+ years working with Qualcomm modem platforms (MDM / SDX series)
• 3+ years integrating third‑party RF front‑end modules with cellular modems
• Strong understanding of 4G LTE and 5G NR physical‑layer concepts
• Expertise in RF front‑end architectures (PA, LNA, filters, switches, tuners)
• Strong C/C++ skills; Linux kernel driver development experience
• Experience with RTOS (FreeRTOS, ThreadX) and Qualcomm AMSS/MPSS architecture
• Proficiency with MIPI RFFE, SPI, I2C, and GPIO interfaces
• Hands‑on experience with QXDM, QMSL, QMI, QPST, and QRCT tools
• Experience using RF test equipment (Keysight, Rohde & Schwarz, Anritsu, CMW500)
• Python or Perl scripting for automation; Git version control
Preferred Qualifications
• Experience with Qualcomm, Skyworks, Qorvo, Broadcom, or Murata RF solutions
• Knowledge of envelope tracking, APT, carrier aggregation, and MIMO
• SAR optimization, RedCap 5G, or mmWave RF front‑end integration
• Staff‑level experience with architectural ownership and technical leadership
Why Join Ericsson?
At Ericsson, you’ll work on carrier‑grade RF challenges that directly impact global enterprise connectivity. As part of a founding India modem team, you’ll influence architecture, engineering practices, and long‑term RF strategy from day one—while collaborating with some of the best modem and RF experts in the industry.
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