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Tier‑1 brand and metro location increase competition, but niche PHY firmware and seniority reduce applicant pool.
Highly specialized PHY and wireless firmware skills make cross‑industry transfers difficult.
Mandatory 8+ years, Layer‑1/PHY firmware expertise, real‑time embedded and C/C++ imply strict filters.
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Develop and maintain Layer-1 (PHY) firmware for 5G NR gNodeB focusing on uplink and downlink PHY channels such as PUSCH, PDSCH, PUCCH, PDCCH, PRACH, SRS, SSB.
Implement and optimize signal processing algorithms including channel estimation, equalization, HARQ processing, MIMO, and beamforming with real-time performance optimization for latency and throughput.
Integrate PHY software with MAC, RF, and hardware platforms and debug complex PHY-level real-time issues.
8+ years of experience in Layer-1 / PHY firmware development.
Hands-on experience with LTE and/or 5G NR technologies.
Strong C/C++ programming skills and experience in real-time or embedded systems.
Bachelor's degree in Engineering, Information Systems, Computer Science, or related field with minimum 4 years of relevant work experience (or higher degrees with less experience).
Experienced in 3GPP PHY specifications with strong knowledge of OFDM/SC-FDMA, numerologies, frame structures, HARQ, and link adaptation.
Familiarity with PHY-MAC interface protocols like FAPI/nFAPI and exposure to gNodeB/eNodeB PHY software development.
Background in DSP or wireless signal processing and experience with advanced NR PHY features such as massive MIMO, beamforming, O-RAN, or split-PHY architectures.