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SpaceX · 1 day ago

Sr. Wireless Firmware Engineer (Direct To Cell)

Redmond, WA

Full-time

Onsite

Senior Level

$160K/yr - $220K/yr

5+ years exp

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. The Sr. Wireless Firmware Engineer will develop novel wireless signal processing algorithms and optimized software for satellites and ground stations, while debugging complex systems and performance issues.

Advanced MaterialsAerospaceManufacturingNational SecuritySpace Travel

Growth Opportunities

No H1B

U.S. Citizen Only

Responsibilities

Design and implement physical layer (PHY) algorithms for satellite-based 4G/5G (LTE/NR) eNodeB/gNodeB

Develop optimized signal processing algorithms running on resource-constrained CPUs

Develop models and run simulations to analyze and validate overall system performance, including modem performance

Design, implement, test, maintain, and document the wireless PHY and MAC layers of the protocol stack

Identify and debug complex performance issues across the wireless PHY and MAC layers

Participate in architecture, design, and code reviews. Contribute to system dimensioning and algorithm design for next generation hardware

Qualification

Wireless signal processingC/C++ codingPhysical layer designDigital signal processingLinux command lineSoftware defined radioDebugging skillsAnalytical skillsCommunication skillsAdaptability

Required

Bachelor's, Master's or PhD degree in computer science, computer engineering, electrical engineering or a STEM discipline

5+ Years of experience with at least 1 of the following: wireless signal processing, modem systems design, wireless systems engineering, DSP (digital signal processing), or physical layer processing (L1)

5+ Years of C/C++ coding experience

Preferred

Familiarity with 3GPP 4G/5G (LTE/NR) physical layer design or other modern broadband OFDM waveforms such as WiMAX, 802.11 WiFi, DVB-S2, DVB-C, 5G NTN (non-terrestrial networks)

Familiarity with forward error correction (FEC) coding concepts

Basic familiarity with MAC layer (medium access control, L2)

Development and optimization of complex signal processing algorithms in both fixed and floating point

Familiarity with Linux command line use, git-based version control, and python programming

SDR (software defined radio) experience

Experience supporting products through the full release cycle including commercial deployment

Strong skills in debugging and performance optimization; exceptional analytical skills and engineering fundamentals

Excellent verbal and written communication skills

Ability to work effectively in a dynamic environment with changing needs and requirements