Senior Software Engineer, 5G Physical Layer

What you will do

5G PHY Software Design and Implementation

Design, implement, and optimize 5G NR PHY algorithms on processor-based and heterogeneous SoC platforms

Develop software for key PHY functions such as modulation/demodulation, channel estimation, equalization, synchronization, coding/decoding, and HARQ support

Implement PHY software compliant with 3GPP Rel 15/16/17 specifications

Hardware, RF, and Platform Integration

Integrate 5G PHY software with RF front-end hardware and digital baseband chains

Develop and maintain hardware control software using interfaces such as I2C and SPI

Work with complex SoC architectures, including ARM, DSPs, and hardware accelerators

Develop software interfaces toward embedded accelerators and DSP blocks

Real-Time and Embedded Systems

Design software within strict real-time constraints and low-latency requirements

Develop on embedded Linux, DSP operating systems, and lightweight RTOS such as FreeRTOS and Zephyr

Optimize performance, memory usage, and throughput of PHY software components

Verification, Testing, and Debug

Create and execute PHY-level test cases and validation scenarios

Generate, analyze, and verify PHY test vectors and waveforms

Verify PHY functionality using 5G test equipment (e.g., R&S, Agilent) and commercial UEs

Debug complex PHY, timing, RF, and performance issues across software and hardware boundaries

Technical Leadership and Delivery

Provide effort estimation and technical input for PHY software development tasks

Support customer requests related to 5G PHY features and performance

Document PHY designs, implementations, and results in Confluence or equivalent systems

Collaboration and Ways of Working

Collaborate with RF, systems, hardware, and protocol stack teams to ensure clean PHY-MAC interfaces

Work effectively in a global, distributed team across Europe, India, and the U.S.

Follow SCRUM / Agile and Continuous Integration development practices

Operate autonomously while maintaining strong technical communication

What you bring to this role

Master of Science or Master of Engineering degree in Electrical Engineering, Communications Engineering, or equivalent

Significant professional experience as an embedded C and C/C++ software engineer

Strong background in 5G NR PHY and digital communications theory

Experience working with SDR platforms and SoC architectures

Working knowledge of MATLAB and Python for PHY algorithm development and analysis

Strong understanding of real-time embedded software constraints

Excellent problem-solving, time management, and communication skills

Bonus Points

Deep understanding of 3GPP 5G NR PHY specifications (Rel 15/16/17+)

Experience with Non-Terrestrial Networks (NTN) and satellite communications

Experience implementing PHY algorithms on DSPs and hardware accelerators

Strong understanding of link budgets, channel models, and RF impairments

Experience with waveform generation, PHY simulation, and lab bring-up