E-Space · 15 hours ago
Senior Software Engineer, 5G Physical Layer
Saratoga, CA
Full-time
Onsite
Senior Level
$150K/yr - $200K/yr
5+ years expE-Space is a company focused on making connectivity from space universally accessible through innovative IoT solutions. They are seeking a Senior Software Engineer to lead the design and implementation of 5G PHY software, focusing on real-time, performance-critical algorithms while collaborating with hardware and RF teams.
Information ServicesSatellite Communication
No H1B
Responsibilities
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
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
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
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
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
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
Qualification
Required
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
Preferred
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
Benefits
An opportunity to really make a difference
Sustainability at our core
Fair and honest workplace
Innovative thinking is encouraged
Competitive salaries
Continuous learning and development
Health and wellness care options
Financial solutions for the future
Optional legal services (US only)
Paid holidays
Paid time off
Company
E-Space
E-Space is bridging Earth & space with the most sustainable LEO space system, delivering real-time, anywhere comms, IoT & Smart-IoT services
201-500 employees
Funding
Current Stage
Growth StageTotal Funding
$50MKey Investors
Prime Movers Lab
2024-10-01Series Unknown
2022-02-07Seed· $50M
Leadership Team
Cindy (Huimin) Du
Chief Financial Officer
Recent News
2025-08-29
Company data provided by crunchbase