4G/5G Stack L1 & Radio Expert

Techedge Inout Solution; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

Techedge Inout Solution seeks a 4G/5G Stack L1 & Radio Expert with 12+ years of experience to work on LTE/NR PHY layer and RF development. The role emphasizes leadership of L1 teams and collaboration with RF, L2, and fronthaul groups.

The candidate will design and optimize PHY algorithms, handle I/Q processing and real-time embedded systems, and drive L1 delivery across vRAN, O-RAN, and custom solutions. Remote-friendly, with flexible notice periods.

Qualifications

• 12+ years of relevant experience in 4G/5G PHY Layer and Radio software development.
• Strong leadership and mentoring experience.
• Experience delivering large-scale L1 programs.

Responsibilities

• Design, develop, and implement LTE/NR PHY layer algorithms and procedures.
• Lead L1 engineering teams to optimize latency, throughput, and hardware utilization.
• Collaborate with Radio/RF, L2, and fronthaul subsystem teams.
• Debug PHY layer issues using logs, I/Q captures, and lab equipment.
• Drive 4G/5G L1 product development, maintenance, and customer support.
• Work across eNodeB/gNodeB variants, including vRAN, O-RAN, and custom solutions.

Skills

LTE/NR PHY Layer

RF & Antenna Systems

Modulation & Coding

I/Q Signal Processing

C/C++

MATLAB

FPGA/ASIC/GPU

L1 acceleration

vRAN / O-RAN

CPRI/eCPRI

Tools

FPGA

ASIC

GPU

I/Q Tools

Job description

Position Details

• Position: 4G/5G Stack L1 & Radio Expert
• Experience: 12+ Years
• Location: Bangalore or Remote
• Notice Period: Immediate joiners preferred; budget flexibility for immediate joiners

Job Description

Key Skills & Technical Expertise

• Strong expertise in LTE/NR PHY Layer, DSP, RF, and Antenna Systems.
• In-depth knowledge of modulation, channel coding, FEC, LDPC, Turbo Decoding, MIMO, and Beamforming.
• Hands-on experience with I/Q sample processing, FFT/IFFT, channel estimation, equalization, modulation, and demodulation.
• Proficiency in C/C++, MATLAB, and real-time embedded systems.
• Experience with FPGA/ASIC/GPU programming and L1 acceleration.
• Knowledge of fronthaul technologies such as CPRI/eCPRI.
• Strong experience in 4G/5G PHY/RF software development and L1 delivery programs.

Roles & Responsibilities

• Design, develop, and implement LTE/NR PHY layer algorithms and procedures.
• Lead and mentor L1 engineering teams to optimize latency, throughput, and hardware utilization.
• Collaborate with Radio/RF, L2, and fronthaul subsystem teams.
• Debug and resolve PHY layer issues using logs, I/Q captures, and laboratory equipment.
• Drive 4G/5G L1 product development, maintenance, and customer support.
• Work across multiple eNodeB/gNodeB variants, including vRAN, O-RAN, and custom solutions.
• Coordinate with internal and external stakeholders to ensure successful technical delivery.

Preferred Candidate Profile

• 12+ years of relevant experience in 4G/5G PHY Layer and Radio software development.
• Strong technical leadership and team mentoring experience.
• Proven experience in delivering large-scale L1 programs.
• Strong communication and stakeholder management skills.