Wireless Firmware Engineer (Starlink Mobile) at SpaceX · Sunnyvale

Summary: SpaceX is a company focused on developing technologies for space exploration, with the goal of enabling human life on Mars. They are seeking a Wireless Firmware Engineer to develop wireless signal processing algorithms and optimized software for satellites and ground stations, working closely with systems and firmware engineers. 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 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 (DSP), Physical layer processing (L1), C programming, C++ programming, Matlab programming, 3GPP 4G/5G (LTE/NR) physical layer design, OFDM waveforms, Forward error correction (FEC) coding, MAC layer medium access control, MAC layer L2, Signal processing algorithm optimization, Linux command line, Git version control, Python programming, Software defined radio (SDR) Benefits: Long-term incentives, in the form of company stock, stock options, or long-term cash awards, Potential discretionary bonuses, 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 accrue paid sick leave pursuant to Company policy which satisfies or exceeds the accrual, carryover, and use requirements of the law