Senior Layer 1 (PHY) Firmware Engineer – 5G NR gNodeB

Company:Qualcomm India Private Limited
Job Area:Engineering Group, Engineering Group > Systems Engineering

General Summary:

We are hiring a Layer‑1 (Physical Layer) Firmware Engineers 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

• 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
• Good understanding of:
  • OFDM / SC‑FDMA
  • Numerologies and frame structures
  • HARQ and link adaptation

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+ year of Systems Engineering or related work experience.
OR
PhD in Engineering, Information Systems, Computer Science, or related field.

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