Senior Lead Engineer - Layer 1 (PHY) Firmware Engineer – 5G NR gNodeB
Qualcomm · Hyderabad · 6+ yrs experience · Posted 2026-06-29
Tech stack: C, C++, Linux
Apply on the company site · Get a referral for this role
Qualcomm salary & ratings · Qualcomm interview process · More live openings
About the role
Qualcomm India Private Limited
Engineering Group, Engineering Group > Systems Engineering
Responsibilities: - 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
- 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
Qualifications: - Required Skills 6+ 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
- 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
- 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‑critical PHY software used in real networks
- Collaborate with highly experienced wireless and systems engineers
- Opportunity to work on next‑generation RAN architectures
- Bachelor's degree in Engineering, Information Systems, Computer Science, or related field and 4+ years of Systems Engineering or related work experience.
- Master's degree in Engineering, Information Systems, Computer Science, or related field and 3+ years of Systems Engineering or related work experience.
- PhD in Engineering, Information Systems, Computer Science, or related field and 2+ years of Systems Engineering or related work experience.
Qualifications
- Required Skills 6+ 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
- 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
- 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‑critical PHY software used in real networks
- Collaborate with highly experienced wireless and systems engineers
- Opportunity to work on next‑generation RAN architectures
- Bachelor's degree in Engineering, Information Systems, Computer Science, or related field and 4+ years of Systems Engineering or related work experience.
- Master's degree in Engineering, Information Systems, Computer Science, or related field and 3+ years of Systems Engineering or related work experience.
- PhD in Engineering, Information Systems, Computer Science, or related field and 2+ years of Systems Engineering or related work experience.
Responsibilities
- 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
- 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