Senior DSP SW Engineer

E-Space

California (MO)

On-site

USD 140,000 - 200,000

Full time

2 days ago

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Job summary

E-Space in Santa Clara, CA, is seeking a DSP engineer to design and deliver a 5G NR PHY subsystem for satellite NTN. You will translate system requirements into DSP algorithms, firmware interfaces, and measurable acceptance criteria, while collaborating with ASIC and verification teams.

The role focuses on real-time embedded DSP software, fixed-point implementations, and power-performance tradeoffs, with opportunities for SystemC/TLM and HLS contributions.

Qualifications

Demonstrated ability to design and deliver DSP algorithms for wireless communications.
Ability to implement and debug numerical algorithms in C/C++ with Python or MATLAB for simulation.

Responsibilities

Own design, implementation, and integration of a 5G NR PHY subsystem for NTN.
Define PHY/link-level simulations and evaluate tradeoffs in performance, latency, and power.
Deliver production DSP firmware and collaborate with ASIC engineers to optimize power and timing.
Own reference models and test vectors; verify fixed-point behavior and interfaces.
Contribute to SystemC/TLM and high-level synthesis development with guidance.
Drive pre-silicon verification and bring-up activities; define tests and expected results.
Review code and test plans; mentor engineers across teams.

Skills

DSP algorithm design

C/C++ implementation

Python/MATLAB

5G NR PHY

Fixed-point DSP

Real-time embedded DSP

Software debugging

Version control

SystemC/TLM knowledge

Education

BS Electrical Engineering

MS Electrical Engineering

PhD (relevant)

Tools

SystemC

HLS

Python

MATLAB

Verilog

Job description

Ready to make connectivity from space universally accessible, secure and actionable? Then you’ve come to the right place!

E-Space is bridging Earth and space to enable hyper-scaled deployments of Internet of Things (IoT) solutions and services. We are building a highly-advanced low Earth orbit (LEO) space system that will fundamentally change the design, economics, manufacturing and service deliveryassociated with traditional satellite and terrestrial IoT systems.

We’re intentional, we’re unapologetically curious and we’re 100% committed to innovate space-based communications and deliver actionable intelligence that will expand global economies, protect space and our planet and enhance our overall quality of life.

What you will do:

Independently own the design, implementation, and integration of a 5G NR physical-layer (PHY) subsystem for satellite non-terrestrial networks (NTN), translating system requirements into algorithms, firmware interfaces, and measurable acceptance criteria.
Define and execute PHY/link-level simulation studies for the subsystem, select representative NTN operating conditions and corner cases, and resolve tradeoffs among link performance, implementation complexity, latency, memory, and power.
Deliver and optimize production DSP firmware for the subsystem, including real-time processing, data movement, and accelerator interaction. Work with ASIC engineers to reduce power through efficient computation, memory access, and power-state control while meeting real-time deadlines; diagnose performance bottlenecks and integration failures.
Own the subsystem’s reference models and ASIC test-vector deliverables, including fixed-point behavior, interface specifications, automated comparisons, and regression coverage agreed with design and verification teams.
Contribute to SystemC transaction-level modeling (TLM) and high-level synthesis (HLS) development, including synthesizable implementations, with guidance from engineers experienced in these flows.
Drive the subsystem’s pre-silicon verification and new-chip bring-up activities, define tests and expected results, and resolve discrepancies across models, firmware, and hardware.
Review algorithms, code, and test plans; mentor less experienced engineers and coordinate technical dependencies with ASIC, verification, and software teams.

What you bring to this role:

Demonstrated ability to design and deliver communication DSP algorithms, explain their performance limits, and make implementation tradeoffs using simulation and measured results.
Ability to implement and debug numerical algorithms in C/C++, and to use Python or MATLAB for simulation, analysis, and test automation.
Practical experience implementing 5G NR PHY functions and interpreting the relevant 3GPP specifications, with the ability to turn requirements into subsystem designs and validation plans.
Demonstrated experience converting floating-point algorithms to fixed-point implementations, selecting numerical precision, and validating performance against a reference model.
Demonstrated ownership of real-time embedded DSP software, including profiling, optimization, hardware/software integration, and systematic debugging on an embedded target. Experience developing low-power firmware in collaboration with ASIC designers and evaluating power, performance, and memory tradeoffs.
Ability to build reproducible tests, use version control, document technical assumptions and results, and explain discrepancies during code and design reviews.
Evidence of independently delivering a PHY subsystem or comparable modem capability through integration and validation, and improving others’ work through technical reviews or mentoring.
Typical background: BS with 7+ years, MS with 5+ years, or PhD with 3+ years of relevant experience in DSP, wireless communications, or embedded modem development, with a degree in Electrical Engineering, Computer Engineering, or a related field; equivalent demonstrated expertise is also welcome. These are guidelines, not mandatory minimums. Relevant doctoral research may count toward experience; demonstrated implementation and delivery capability remains essential.

Bonus points for the following:

Experience building SystemC TLM models for hardware/software integration or performance analysis, or delivering synthesizable HLS blocks with verified functional behavior and evaluated latency, throughput, and resource use.
Experience with 5G NR or NTN algorithms and specifications, satellite channel modeling, or compensation for Doppler and timing effects.
Experience taking modem functions through pre-silicon verification and silicon bring-up, including correlation of simulation results with hardware measurements.
Experience with 5G NR MAC, PHY/MAC interfaces, scheduling interactions, or HARQ procedures.
Experience implementing and optimizing algorithms on vector DSPs, including SIMD intrinsics, vectorization, and efficient memory access.
Experience validating ASIC power-management features through firmware, including clock or power gating, retention, and sleep/wake transitions under real-time constraints.

Additional Requirements

This is a fast-paced, high-impact environment - flexibility to occasionally work extended hours or weekends during critical periods is expected.

$140,000 - $200,000 a year

This is a full time, exempt position, based out of our Santa Clara office. The target base pay for this position is $140,000 - $200,000 annually. The total compensation packaged will be determined by various factors such as your relevant job-related knowledge, skills, and experience.

We are redefining how satellites are designed, manufactured and used—so we’re looking for candidates with passion, deep knowledge and direct experience on LEO satellite component development, design and in-orbit activities. If that’s your experience – then we’ll be immediately wow-ed.

E-Space is not currently able to provide employment sponsorship for candidates who do not hold work authorization for the location of this role.

Why E-Space is right for you:

As a member of our team, you will play a crucial role in driving our success. Our team members have a strong sense of dedication and responsibility; this includes a strong commitment to our mission to create an entirely new suite of global capabilities to improve lives, business efficiencies and build a smarter planet. This means that there will be times when extra hours, including nights and weekends, may be needed to meet critical deadlines and mission goals. In return, we offer a dynamic work environment with opportunities for professional growth and development and the chance to make a meaningful impact in a high-growth industry.

We want you to make the most of your journey at E-Space. That’s why we support and invest in the physical, emotional and financial well-being of our team members and their families. Some of what you can expect when working at E-Space: