Software Dev Engineer, Device OS Connectivity

Amazon; Sunnyvale (CA); On-site; USD 165,000 - 224,000; Full time

Benefits offered by this job

Health insurance

401(k) matching

Paid time off

Parental leave

Job summary

Amazon Lab126 is seeking a skilled software engineer to design and optimize the cellular telephony framework for Android-based devices, delivering reliable voice, data, messaging, and connectivity experiences.

You will work on core telephony components, including calling, data connectivity, and advanced features like Wi‑Fi calling and eSIM provisioning, while collaborating with modem/baseband, OS platform, QA, and cloud services teams.

Qualifications

• 3+ years of non-internship professional software development experience.
• Bachelor's degree or equivalent.
• 2+ years of contributing to new and current systems architecture and design (architecture, design patterns, reliability and scaling).
• Experience programming with Java, C++, or C# including object-oriented design.

Responsibilities

• Design, develop, and optimize the cellular telephony framework and services layer on Android-based devices.
• Architect and implement core telephony framework components including calling, data connectivity, messaging, and features such as Wi-Fi calling, eSIM provisioning, and 5G integration.
• Optimize telephony stack performance for call setup latency, network registration, and power efficiency across carrier networks and devices.
• Partner with product management to translate customer goals into technical designs and implementation.
• Collaborate cross-functionally with modem/baseband, OS platform, QA/certification, and cloud services teams to deliver telephony features end-to-end.
• Lead and participate in design reviews and drive complex architectural decisions.

Skills

Software development

Java/C++/C#

OO design

Android development

Education

Bachelor's degree or equivalent

Tools

Git

CI/CD processes

Job description

Amazon Lab126 is an inventive research and development company that designs and engineers high-profile consumer electronics. Lab126 began in 2004 as a subsidiary of Amazon.com, Inc., originally creating the best-selling Kindle family of products. Since then, we have produced popular devices like Fire tablets, Fire TV, Amazon Echo and Amazon Echo Show. The Amazon Devices group delivers delightfully unique Amazon experiences, giving customers instant access to everything, digital or physical.

Key job responsibilities

• Design, develop, and optimize the cellular telephony framework and services layer on Android-based devices, delivering reliable voice, data, messaging, and connectivity experiences. This role owns the application processor side of the mobile telephony stack, integrating carrier requirements, platform telephony APIs, and cellular service features across various devices.
• Architect and implement core telephony framework components including calling, data connectivity, messaging, and advanced features such as Wi-Fi calling, eSIM provisioning, and 5G integration.
• Optimize telephony stack performance for call setup latency, network registration, and power efficiency across diverse carrier networks and device configurations.
• Partner with product management to translate customer experience goals into technical designs and implementation.
• Collaborate cross-functionally with modem/baseband, OS platform, QA/certification, and cloud services teams to deliver differentiated telephony features end-to-end.
• Lead and participate in design reviews, taking ownership of critical architectural decisions and driving resolution of complex technical issues.

About the team

We own the cellular services on various devices, building the software that connects people through voice, data, and messaging every day. We work closely with OS platform teams, QA/certification, cloud services, and product management to deliver reliable connectivity experiences across diverse carrier networks and device configurations. We take ownership of the performance and reliability that users depend on for their most fundamental connectivity experiences.

Basic Qualifications

• 3+ years of non-internship professional software development experience
• Bachelor's degree or equivalent
• 2+ years of contributing to new and current systems architecture and design (architecture, design patterns, reliability and scaling) experience
• Experience programming with at least one modern language such as Java, C++, or C# including object-oriented design

Preferred Qualifications

• Experience with full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations
• 3+ years of Android development experience
• Experience solving problems with technology in the Telecommunications industry

Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status, disability, or other legally protected status.

Los Angeles County applicants: Job duties for this position include: work safely and cooperatively with other employees, supervisors, and staff; adhere to standards of excellence despite stressful conditions; communicate effectively and respectfully with employees, supervisors, and staff to ensure exceptional customer service; and follow all federal, state, and local laws and Company policies. Criminal history may have a direct, adverse, and negative relationship with some of the material job duties of this position. These include the duties and responsibilities listed above, as well as the abilities to adhere to company policies, exercise sound judgment, effectively manage stress and work safely and respectfully with others, exhibit trustworthiness and professionalism, and safeguard business operations and the Company’s reputation. Pursuant to the Los Angeles County Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.

Our inclusive culture empowers Amazonians to deliver the best results for our customers.

Amazon also offers comprehensive benefits including health insurance (medical, dental, vision, prescription, Basic Life & AD&D insurance and option for Supplemental life plans, EAP, Mental Health Support, Medical Advice Line, Flexible Spending Accounts, Adoption and Surrogacy Reimbursement coverage), 401(k) matching, paid time off, and parental leave. Learn more about our benefits at https://amazon.jobs/en/benefits.

USA, CA, Sunnyvale - 165,200.00 - 223,600.00 USD annually