Company
Qualcomm India Private Limited

Job Area
Engineering Group, Engineering Group > Systems Engineering

General Summary
We are hiring an experienced staff level -
Layer‑1 (Physical Layer) Firmware Engineer
to work on
5G NR gNodeB Firmware
. This role focuses on
PHY development on the DU side
, building high‑performance, real‑time wireless software used in modern cellular networks.

You will work closely with PHY, RF, platform, and system teams to develop and optimize
carrier‑grade NR PHY features
.

What You’ll Do
- Develop and maintain Layer‑1 (PHY) firmware for 5G NR gNodeB
- Work on uplink and downlink PHY channels, including:
- PUSCH, PDSCH, PUCCH, PDCCH, PRACH, SRS, SSB
- Implement and optimize signal processing algorithms such as:
- Channel estimation and equalization
- HARQ processing
- MIMO and beamforming
- Work on FEC processing:
- Turbo coding/decoding (LTE)
- LDPC and Polar coding/decoding (5G NR)
- Optimize real‑time performance for latency and throughput
- Integrate PHY software with MAC, RF, and hardware platforms




- Debug complex PHY‑level and real‑time issues

Required Skills
What We’re Looking For
- 5-8 years of strong experience in Layer‑1 / PHY firmware development
- Hands‑on experience with LTE and/or 5G NR
- Solid understanding of 3GPP PHY specifications
- Strong C/C++ programming skills
- Experience working on real‑time or embedded systems
- Positive understanding of:
- OFDM / SC‑FDMA
- Numerologies and frame structures
- HARQ and link adaptation

Nice to Have
- Experience with gNodeB / eNodeB PHY software
- Exposure to FAPI / nFAPI or similar PHY‑MAC interfaces
- Experience with massive MIMO or beamforming
- Knowledge of O‑RAN or split‑PHY architectures
- Background in DSP or wireless signal processing
- Experience with NB‑IoT, NTN, or advanced NR PHY features

Tools & Technologies
- Programming: C, C++
- Platforms: Embedded Linux, RTOS, DSP‑based systems
- Standards: 3GPP LTE & 5G NR
- Domains: PHY, real‑time systems, wireless signal process

📌 Senior Engineer/Lead (Hyderabad)
🏢 Qualcomm
📍 Hyderabad