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 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 * 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 Minimum Qualifications: • Bachelor's degree in Engineering, Information Systems, Computer Science, or related field and 3+ years of Systems Engineering or related work experience. OR Master's degree in Engineering, Information Systems, Computer Science, or related field and 2+ years of Systems Engineering or related work experience. OR PhD in Engineering, Information Systems, Computer Science, or related field and 1+ year of Systems Engineering or related work experience. Applicants: Qualcomm is an equal opportunity employer. If you are an individual with a disability and need an accommodation during the application/hiring process, rest assured that Qualcomm is committed to providing an accessible process. You may e-mail disability-accomodations@qualcomm.com or call Qualcomm's toll-free number found here. Upon request, Qualcomm will provide reasonable accommodations to support individuals with disabilities to be able participate in the hiring process. Qualcomm is also committed to making our workplace accessible for individuals with disabilities. (Keep in mind that this email address is used to provide reasonable accommodations for individuals with disabilities. We will not respond here to requests for updates on applications or resume inquiries). Qualcomm expects its employees to abide by all applicable policies and procedures, including but not limited to security and other requirements regarding protection of Company confidential information and other confidential and/or proprietary information, to the extent those requirements are permissible under applicable law. To all Staffing and Recruiting Agencies: Our Careers Site is only for individuals seeking a job at Qualcomm. Staffing and recruiting agencies and individuals being represented by an agency are not authorized to use this site or to submit profiles, applications or resumes, and any such submissions will be considered unsolicited. Qualcomm does not accept unsolicited resumes or applications from agencies. Please do not forward resumes to our jobs alias, Qualcomm employees or any other company location. Qualcomm is not responsible for any fees related to unsolicited resumes/applications. If you would like more information about this role, please contact Qualcomm Careers.