Senior Firmware Engineer, Cellular Protocol Stack
Company: Google
Location: San Diego
Posted on: April 2, 2026
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Job Description:
Minimum qualifications: Bachelor's degree in Computer Science,
Electrical Engineering, Computer Engineering, a related technical
field, or equivalent practical experience. 7 years of experience
with software development in one or more programming languages
(e.g., C/C++, Java, Rust). Experience in cellular modem software
development or protocol stack engineering (e.g., LTE, New Radio
(NR), or IoT). Preferred qualifications: Master’s degree or PhD in
Engineering, Computer Science, a related technical field, or
equivalent practical experience. Experience with 3GPP protocol
layers (e.g., RRC, NAS, MAC, RLC, PDCP, or PHY). Experience with
RTOS (Real-Time Operating Systems) in embedded environments.
Experience on modem function and performance troubleshooting in
lab, field and carrier tests. Knowledge of 3GPP Release 17 (e.g.,
IoT-NTN or NR-NTN). About the job Google's software engineers
develop the next-generation technologies that change how billions
of users connect, explore, and interact with information and one
another. Our products need to handle information at massive scale,
and extend well beyond web search. We're looking for engineers who
bring fresh ideas from all areas, including information retrieval,
distributed computing, large-scale system design, networking and
data storage, security, artificial intelligence, natural language
processing, UI design and mobile; the list goes on and is growing
every day. As a software engineer, you will work on a specific
project critical to Google’s needs with opportunities to switch
teams and projects as you and our fast-paced business grow and
evolve. We need our engineers to be versatile, display leadership
qualities and be enthusiastic to take on new problems across the
full-stack as we continue to push technology forward. With your
technical expertise you will manage project priorities, deadlines,
and deliverables. You will design, develop, test, deploy, maintain,
and enhance software solutions. The US base salary range for this
full-time position is $163,000-$237,000 bonus equity benefits. Our
salary ranges are determined by role, level, and location. Within
the range, individual pay is determined by work location and
additional factors, including job-related skills, experience, and
relevant education or training. Your recruiter can share more about
the specific salary range for your preferred location during the
hiring process. Please note that the compensation details listed in
US role postings reflect the base salary only, and do not include
bonus, equity, or benefits. Learn more about benefits at Google .
Responsibilities Solve system-level problems related to high
mobility, high latency and doppler frequency compensation, inherent
in satellite-based cellular networks. Improve Non-Terrestrial
Network (NTN) user experience, including but not limited to call,
voice quality, data, thermal or power, connectivity. Identify key
performance scenarios and recreate the scenario in the lab
environment for further research and development for more optimized
solutions. Work with test teams to define validation strategies and
root-cause issues found during lab testing with satellite emulators
and field trials. Debug, analyze and fix modem issues from factory,
certification (e.g., Global Certification Forum (GCF)/PCS Type
Certification Review Board (PTCRB)/Internet of Things (IoT)), field
and end users. Work with vendors and solution providers on modem
protocol design and optimization.
Keywords: Google, San Diego , Senior Firmware Engineer, Cellular Protocol Stack, IT / Software / Systems , San Diego, California
