Position Details

Type Full-Time

Experience mid

Exp. Years 3+ years

Education Bachelor's degree or equivalent

Category Software Engineering

About this role

Design, develop, and optimize the Android cellular telephony framework and services layer for Amazon devices. You will integrate carrier requirements and telephony APIs, implement core calling/data/messaging features, and improve performance metrics like call setup latency, network registration, and power efficiency.

Key Responsibilities

Design, develop, and optimize the cellular telephony framework and services layer on Android-based devices
Architect and implement core telephony components including calling, data connectivity, and messaging
Optimize telephony stack performance for call setup latency, network registration, and power efficiency
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 resolution of complex technical issues

Technical Overview

Own the application processor side of the mobile telephony stack, delivering reliable connectivity experiences across voice, data, messaging, and cellular services. Implement and optimize telephony components and advanced features such as Wi-Fi calling, eSIM provisioning, and 5G integration while collaborating with modem/baseband, OS platform, QA/certification, and cloud services teams.

Ideal Candidate

The ideal candidate is a mid-level Android engineer with 3+ years of professional software development experience, including 3+ years of Android development. They have built and optimized complex cellular telephony features on Android devices, including Wi-Fi calling, eSIM provisioning, and 5G integration. They apply software engineering best practices across the full development life cycle (coding standards, code reviews, source control, continuous deployments, and testing) and can lead design reviews and resolve complex technical issues cross-functionally.

Must-Have Skills

3+ years of non-internship professional software development experience3+ years of Android development experienceExperience building complex software systems that have been successfully delivered to customersKnowledge of professional software engineering & best practices for full software development life cycleincluding coding standardssoftware architecturescode reviewssource control managementcontinuous deploymentstestingand operational excellenceDesigndevelopand optimize the cellular telephony framework and services layer on Android-based devicesArchitect and implement core telephony framework components including callingdata connectivitymessagingOptimize telephony stack performance for call setup latencynetwork registrationand power efficiency

Nice-to-Have Skills

Hands-on experience developing telephony and cellular services softwaredeep understanding of cell

Required Skills

Android developmentcellular telephony frameworkmobile telephony stackcarrier requirementsplatform telephony APIscallingdata connectivitymessagingWi-Fi callingeSIM provisioning5G integrationtelephony stack performancecall setup latencynetwork registrationpower efficiencydesign reviewssoftware architecturescoding standardscode reviewssource control managementcontinuous deploymentstestingoperational excellencesoftware development life cycle

Hard Skills

Android developmentcellular telephony frameworkservices layer on Android-based devicesmobile telephony stackapplication processor side of the mobile telephony stackintegrating carrier requirementsplatform telephony APIscellular service featurescallingdata connectivitymessagingadvanced featuresWi-Fi callingeSIM provisioning5G integrationtelephony stack performance optimizationcall setup latency optimizationnetwork registration optimizationpower efficiency optimizationcarrier network integrationdevice configuration optimizationsystem architecturedesign reviewsleading resolution of complex technical issuescoding standardscode reviewssource control managementcontinuous deploymentstestingoperational excellencesoftware development life cycle

Soft Skills

partner with product managementtranslate customer experience goals into technical designscross-functional collaborationlead design reviewsdrive resolution of complex technical issuesarchitectural decision making

Industry & Role

Industry Aerospace

Job Function Build and optimize Android telephony stack software for reliable voice, data, messaging, and connectivity across carriers and devices.

Role Subtype Mobile Engineer

Tech Domains Android, Networking / TCP-IP, Amazon Web Services

Keywords for Your Resume

Software Dev EngineerSoftware Development EngineerAndroid developmentcellular telephony frameworkmobile telephony stackplatform telephony APIscarrier requirementscallingdata connectivitymessagingWi-Fi callingeSIM provisioning5G integrationtelephony stack performancecall setup latencynetwork registrationpower efficiencydesign reviewssoftware architecturescoding standardscode reviewssource control managementcontinuous deploymentstestingoperational excellenceAmazon Lab126devicesmodem/basebandOS platformQA/certificationcloud services teamsAndroid-based devicestelephony and cellular services software

Deal Breakers

Must have 3+ years of non-internship professional software development experience, Must have 3+ years of Android development experience, Must demonstrate knowledge of full software development life cycle best practices (coding standards, code reviews, source control management, continuous deployments, testing, operational excellence), Must be able to deliver cellular telephony stack features including calling, data connectivity, messaging, Wi-Fi calling, eSIM provisioning, and 5G integration

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