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Open nowPosted 5 days ago

Principal DSP SW Engineer

E-Space102 open roles

Pay
$140,000 – $200,000 a year
Where
Santa Clara, CA
Work mode
On site
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Your applicationOpen nowPrincipal DSP SW EngineerE-Space · Santa Clara, CA

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This job: posted 5 days ago

The posting

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 delivery associated 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:

  • Lead the DSP software and firmware architecture for the 5G NR modem physical layer (PHY) for satellite non-terrestrial networks (NTN), define subsystem boundaries and interfaces, and guide hardware/software partitioning with ASIC and system architects while remaining hands-on in critical implementation work.
  • Set the PHY/link-level modeling and performance-validation approach across subsystems. Establish representative NTN scenarios, performance and power budgets, and acceptance criteria, and resolve architecture tradeoffs using simulation and implementation evidence.
  • Guide the firmware architecture for real-time processing, memory, data movement, and accelerator control. Co-design low-power operation with ASIC architects, including hardware/software partitioning and power-state coordination; implement or optimize critical functions and resolve performance, power, or integration issues spanning multiple subsystems.
  • Establish consistent reference-model, fixed-point, and test-vector practices across the modem PHY, enabling ASIC design and verification teams to trace requirements to expected behavior and reproduce discrepancies.
  • Contribute to SystemC transaction-level modeling (TLM) and high-level synthesis (HLS) development, including synthesizable implementations, with guidance from engineers experienced in these flows.
  • Lead DSP software and model contributions to pre-silicon verification and first-silicon bring-up across subsystems. Identify integration risks, agree validation priorities with design and verification leads, and drive resolution of issues spanning algorithms, firmware, and hardware.
  • Lead cross-team technical decisions and architecture reviews, mentor engineers across seniority levels, and guide implementation sequencing and dependency resolution through prototype, tapeout, and silicon validation.

What you bring to this role:

  • Demonstrated depth in communication DSP and modem architecture, with a record of resolving difficult performance and implementation tradeoffs across interacting PHY subsystems.
  • Ability to implement and debug numerical algorithms in C/C++, and to use Python or MATLAB for simulation, analysis, and test automation.
  • Deep practical knowledge of 5G NR PHY implementation and relevant 3GPP specifications, with the ability to assess NTN requirements and translate them into coherent architecture, interfaces, and validation criteria.
  • Demonstrated experience converting floating-point algorithms to fixed-point implementations, selecting numerical precision, and validating performance against a reference model.
  • Demonstrated ability to architect and deliver embedded modem software across programmable processors and hardware accelerators, supported by hands-on implementation, optimization, and integration work. Experience guiding low-power ASIC/firmware co-design, allocating power budgets, and evaluating architecture tradeoffs against power estimates and hardware measurements.
  • Ability to build reproducible tests, use version control, document technical assumptions and results, and explain discrepancies during code and design reviews.
  • Evidence of technical leadership across multiple PHY subsystems, including hardware/software architecture decisions and delivery through pre-silicon validation and silicon bring-up; ability to resolve cross-team technical disagreements using clear analysis and test evidence.
  • Typical background: BS with 10+ years, MS with 7+ years, or PhD with 5+ 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, delivery, and technical leadership capability remains essential.

Bonus points for the following:

  • Experience establishing SystemC TLM or synthesizable HLS flows across teams, including model fidelity, hardware/software partitioning, implementation tradeoffs, and correlation with RTL or silicon results.
  • Experience leading 5G NR NTN modem development or resolving satellite-specific acquisition, synchronization, Doppler, and timing challenges through simulation and hardware validation.
  • 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 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:

• 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

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