5G L1 PHY Protocol Stack Developers

Hughes Systique; Bengaluru, Dadri, Gurugram District; On-site; INR 1,800,000 - 2,800,000; Full time

Job summary

Hughes Systique in India seeks a seasoned 5G L1 Protocol Stack Developer to design, develop, and optimize 5G NR/LTE PHY software on DSP platforms. You will implement DSP algorithms, ensure 3GPP compliance, and deliver real-time solutions for DSP processors and SoCs.

The role requires hands-on work with C/C++, DSP architectures, and tools for debugging and validation, collaborating with cross-functional teams to meet performance, latency, and power targets in wireless modulation stacks.

Qualifications

• Experience with 5G/4G Layer-1 PHY development.
• Strong DSP algorithm implementation and real-time embedded software in C/C++.
• Knowledge of 3GPP standards and modem technologies.
• Experience with DSP processors and SoCs.

Responsibilities

• Design, develop, and maintain 4G LTE and 5G NR Layer-1 (PHY) features per 3GPP.
• Implement DSP algorithms: OFDM, MIMO, Beamforming, Channel Estimation, LDPC, Polar, HARQ.
• Develop real-time embedded software in C/C++ for DSP/modem platforms.
• Analyze performance, memory usage, latency, and power.
• Debug PHY/L1 issues via modem logs, traces, and tools.
• Validate features through unit, system, interoperability, and conformance tests.
• Collaborate with MAC, RRC, RF, System Eng, and Verification teams.
• Support customer issues and field investigations.

Skills

5G/L1 PHY

C

C++

DSP

LTE/4G

5G NR

OFDM

MIMO

Channel Estimation

QXDM

Wireshark

Git

Jira

Tools

MATLAB/Simulink

Python

Qualcomm Hexagon DSP

CEVA DSP

TI DSP

ARM NEON

Job description

Requisition Title- 5G L1 Protocol Stack Developers

Location- Gurugram, Noida, Bengaluru

Type of Employment- Permanent

Minimum Experience- 4 Years

Maximum Experience-10 Years

Project Overview

The clients portfolio includes processors, modems, platforms, RF systems, critical Internet of Things (IoT) and connectivity solutions, along with end-to-end products and tools that accelerate product development and commercialization. The scope of HSPL work involves development and support of the UE protocol stack for 5G projects.

Job Description

We are looking for an experienced 5G/4G Layer-1 (Physical Layer) Protocol Stack Developer with strong expertise in Digital Signal Processing (DSP). The candidate will be responsible for the design, development, optimization, validation, and maintenance of LTE and 5G NR physical layer algorithms and software running on DSP processors, SoCs, or modem platforms.

The role requires implementing highly optimized real-time signal processing solutions for wireless communication systems while ensuring compliance with 3GPP standards and meeting performance, latency, and power consumption targets.

Roles & Responsibilities

• Design, develop, and maintain 4G LTE and 5G NR Layer-1 (PHY) features as per 3GPP specifications.
• Implement and optimize DSP algorithms including:
• OFDM
• MIMO
• Beamforming
• Channel Estimation
• Equalization
• LDPC
• Polar Coding
• HARQ
• Develop high-performance, real-time embedded software using C/C++ for DSP and modem platforms.
• Analyze and optimize system performance, memory utilization, latency, and power consumption.
• Debug and resolve PHY/L1 issues using modem logs, traces, and protocol analysis tools.
• Validate features through unit testing, system testing, interoperability testing, and conformance testing.
• Collaborate with MAC, RRC, RF, System Engineering, and Verification teams for feature integration and deployment.
• Support customer issues, field investigations, and performance enhancement activities.

Key Skills

• 3GPP
• C
• C++
• DSP
• LTE / 4G
• 5G NR
• OFDM
• MIMO
• Channel Estimation
• QXDM
• Wireshark
• Git
• Jira

Desired Skills

• Experience with Qualcomm Hexagon DSP, CEVA DSP, TI DSP, or ARM NEON optimization.
• Knowledge of:
• Carrier Aggregation (CA)
• EN-DC
• Massive MIMO
• VoLTE / VoNR
• RedCap
• NTN
• Experience with MATLAB/Simulink for algorithm modeling and validation.
• Familiarity with LTE/NR protocol stack interactions across:
• L1
• MAC
• RLC
• RRC
• Exposure to modem chipset development and commercialization.
• Scripting and automation using Python.
• Experience analyzing KPIs such as:
• Throughput
• BLER
• SINR
• CQI
• Latency

Target Profile

Experience: 4-10 Years

Candidates should have strong hands-on experience in 5G/4G Layer-1 PHY development, DSP algorithm implementation, and real-time embedded software development in C/C++, with solid knowledge of 3GPP standards and wireless modem technologies.

Please let me know if you have any queries/ concerns