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
What We’re Looking For




Required Skills
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 processing
Why Join Us
Work on cutting‑edge 5G NR technology
Build performance

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