Wireless Firmware Engineer (Starlink Mobile) at SpaceX in Redmond, WA

Summary: SpaceX is actively developing technologies to enable human life on Mars, and they are seeking a Wireless Firmware Engineer for the Starlink Mobile program. The role involves developing wireless signal processing algorithms, implementing optimized software for satellites and ground stations, and debugging complex systems. 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 Required Qualifications: - Bachelor's degree in computer science, computer engineering, electrical engineering or a STEM discipline - 1+ Years of experience with at least 1 of the following; wireless signal processing, wireless communications, modem systems design, wireless systems engineering, DSP (digital signal processing), or physical layer processing (L1) - 1+ Years of C/C++ or Matlab coding experience - Must be willing to work extended hours as needed Preferred Qualifications: - 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 Required Skills: Wireless signal processing, Wireless communications, Modem systems design, Wireless systems engineering, Digital signal processing, Physical layer processing, C++, C, Matlab, 3GPP 4G/5G LTE/NR physical layer design, OFDM waveforms, Forward error correction coding, MAC layer, Signal processing algorithm optimization, Linux command line, Git version control, Python programming, Software defined radio, Debugging, Performance optimization Benefits: Long-term incentives, in the form of company stock, stock options, or long-term cash awards, Potential discretionary bonuses, The ability to purchase additional stock at a discount through an Employee Stock Purchase Plan, Access to comprehensive medical, vision, and dental coverage, Access to a 401(k) retirement plan, Short and long-term disability insurance, Life insurance, Paid parental leave, Various other discounts and perks, 3 weeks of paid vacation, Eligible for 10 or more paid holidays per year, Employees in Washington State accrue paid sick time in compliance with state and federal law, Company shuttles are offered to employees for roundtrip travel from select Seattle locations to the SpaceX Redmond office Monday to Friday