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Tier-1 employer and mid-level experience increase competition, but niche PHY specialization moderates it.
Highly domain-specific telecom PHY and embedded firmware skills limit cross-industry transferability.
Explicit PHY firmware, LTE/5G, C++ and real-time requirements create strict technical filtering for candidates.
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Develop and maintain Layer-1 (PHY) firmware for 5G NR gNodeB focusing on uplink and downlink PHY channels.
Implement and optimize real-time signal processing algorithms including channel estimation, HARQ, MIMO, beamforming, and FEC coding/decoding.
Integrate PHY software with MAC, RF, and hardware platforms and debug complex PHY-level issues to optimize latency and throughput.
Strong experience in Layer-1 / PHY firmware development for 5G NR and/or LTE.
Proficient in C/C++ programming and real-time or embedded systems development.
Bachelor's degree in Engineering, Information Systems, Computer Science or related field with 2+ years experience OR Master's with 1+ year OR PhD in relevant field.
Solid understanding of 3GPP PHY specifications, OFDM/SC-FDMA, numerologies, frame structures, HARQ, and link adaptation.
Experienced in development of carrier-grade PHY firmware in a multi-disciplinary engineering environment involving PHY, RF, and platform teams.
Demonstrates operational expertise with 5G NR PHY channels and advanced wireless signal processing.
Familiar with gNodeB/eNodeB PHY software, PHY-MAC interface standards (FAPI/nFAPI), massive MIMO, beamforming, or O-RAN split-PHY architectures.