TL;DR

Sr. Wireless Firmware Engineer (Direct To Cell): Develop novel wireless signal processing algorithms and optimized software for satellite-based 4G/5G systems with an accent on physical layer (PHY) and MAC layer protocol stack development. Focus on designing, debugging, and optimizing high-performance wireless PHY and MAC layers for resource-constrained CPUs in satellite and ground station environments.

Location: Sunnyvale, CA, onsite

Salary: $170,000 - $230,000 per year

Company

%hirify_global% develops technologies to enable human life on Mars, focusing on space exploration and satellite connectivity.

What you will do

Design and implement physical layer (PHY) algorithms for satellite-based 4G/5G (LTE/NR) eNodeB/gNodeB.
Develop optimized signal processing algorithms for resource-constrained CPUs.
Model and simulate system performance including modem performance.
Design, test, maintain, and document wireless PHY and MAC layers of the protocol stack.
Identify and debug complex performance issues across wireless PHY and MAC layers.
Participate in architecture, design, and code reviews; contribute to system dimensioning and next-generation hardware algorithm design.

Requirements

Bachelor's, Master’s or PhD in computer science, computer engineering, electrical engineering, or STEM discipline.
Must be a U.S. citizen, lawful permanent resident, refugee, or asylee due to ITAR regulations.
5+ years experience in wireless signal processing, modem systems design, wireless systems engineering, DSP, or physical layer processing.
5+ years of C/C++ coding experience.
Willingness to work extended hours and weekends as needed.
Strong debugging, performance optimization, and analytical skills.

Nice to have

Familiarity with 3GPP 4G/5G physical layer design or other broadband OFDM waveforms.
Experience with forward error correction coding and MAC layer concepts.
Linux command line, git, python programming, and SDR experience.
Experience supporting products through full release cycle including commercial deployment.

Culture & Benefits

Comprehensive medical, vision, and dental coverage.
401(k) retirement plan and disability insurance.
Paid parental leave, vacation, holidays, and sick leave.
Employee stock purchase plan and potential long-term incentives.