Cellular Modem Firmware Engineer




Multiple Locations


Position summary

Note: By applying to this position you will have an opportunity to share your preferred working location from the following: Mountain View, CA, USA; San Diego, CA, USA.

Minimum qualifications:

  • Bachelor's degree in Engineering, a related field, or equivalent practical experience.

  • 5 years of experience with 3GPP standards.

  • Experience with Android RIL, Telephony, C and Embedded RTOS.

  • Experience with development in cellular protocol stack (https://e.g., control or data plane).

Preferred qualifications:

  • Experience in 3GPP (https://e.g., NR, LTE, WCDMA).

  • Experience in modem performance analysis and improvement, call performance (https://e.g., CSFB/VoLTE/EPSFB/VoNR, WiFi calling), data performance, connectivity performance, thermal/power performance.

  • Experience in cellular protocol stack including control plane, data plane, NAS/RRC/SDAP/PDCP/RLC/MAC/PHY, ENDC, NRDC.

  • Experience in satellite communication (https://e.g., NB NTN, 5G NTN) or wearable devices with cellular connectivity development.

  • Ability to learn new technologies and domains, including 3GPP, software development, lab equipment, etc.

  • Excellent programming skill in C/C++/Python, with the ability to understand network protocols such as TCP/IP.

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.

As a Cellular Modem Firmware Engineer, you will focus on development, integration, customization and verification of modem features on Android devices, working closely with vendors. You will be the point of contact for all debugging, triaging and fixing modem issues from factory and certification (https://e.g., GCF/PTCRB/IOT/FIT). You will also be responsible for developing performance optimized connectivity solutions.

Making the world's information universally accessible and useful doesn't stop at the desktop. The Mobile team builds tools to get you the information you need no matter where you are. Android has become the world's most popular mobile ecosystem, powering billions of devices, from smartphones to tablets, watches to TVs and everything in between. Whether adding to the core Android experience, forging new markets for digital content, creating immersive and portable versions of our products or managing relationships with a global community of developers, the Mobile team is giving you Google on the go.

The US base salary range for this full-time position is $118,000-$172,000 + bonus + equity + benefits. Our salary ranges are determined by role, level, and location. The range displayed on each job posting reflects the minimum and maximum target for new hire salaries for the position across all US locations. 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.


  • Develop modem software, focus on Non-Access Stratum (NAS)/Access Stratum (AS) protocol stack.

  • Develop thermal, power and performance optimized connectivity solution.

  • Develop innovative modem differentiators.

Google is proud to be an equal opportunity workplace and is an affirmative action employer. We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity or Veteran status. We also consider qualified applicants regardless of criminal histories, consistent with legal requirements. See also Google's EEO Policy and EEO is the Law. If you have a disability or special need that requires accommodation, please let us know by completing our Accommodations for Applicants form.

Why you should apply for a job to Google:

  • 56% say women are treated fairly and equally to men

  • 75% say the CEO supports gender diversity

  • Ratings are based on anonymous reviews by Fairygodboss members.
  • Generous parental and caregiver leave along with fertility and growing family support.

  • Flexible work options that include a hybrid work model, four “work from anywhere” weeks, and remote work opportunities.

  • A chance to be a part of a variety of employee resource groups, community groups, and culture clubs.