Android Telephony Engineer — 5G, eSIM & Voice/Data

Amazon Lab126; Sunnyvale (CA); On-site; USD 165,000 - 224,000; Full time

Benefits offered by this job

RSUs

Health insurance

Paid time off

Job summary

Amazon Lab126 is seeking a software professional to design, develop, and optimize the cellular telephony framework and services layer on Android-based devices, delivering reliable voice, data, messaging, and connectivity experiences.

The role owns the application processor side of the mobile telephony stack, integrating carrier requirements and platform telephony APIs across devices. Requires 3+ years of relevant experience and a Bachelor's degree.

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.

Responsibilities

• 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.

Skills

3+ years exp

Systems architecture

Java/C#/C++

Bachelor's degree

Education

Bachelor's degree

Tools

Android development

Job description

Amazon Lab126 is seeking a software professional to design, develop, and optimize the cellular telephony framework and services layer on Android-based devices, delivering reliable voice, data, messaging, and connectivity experiences.

The role owns the application processor side of the mobile telephony stack, integrating carrier requirements and platform telephony APIs across devices. Requires 3+ years of relevant experience and a Bachelor's degree.