Company

Qualcomm India Private Limited

Job Area

Engineering Group, Engineering Group > Systems Engineering

General Summary

We are hiring a 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





Strong experience in Layer‑1 / PHY firmware development
Hands‑on experience with LTE and/or 5G NR
Solid understanding of 3GPP PHY specifications
Solid C/C++ programming skills
Experience working on real‑time or embedded systems
Good 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

Minimum Qualifications

Bachelor's degree in Engineering, Information Systems, Computer Science, or related field and 2+ years of Systems Engineering or related work experience.

OR

Master's degree in Engineering, Information Systems, Computer Science, or related field and 1

📌 Senior Layer 1 (Hyderabad)
🏢 Qualcomm
📍 Hyderabad