Software Dev Engineer, Device OS Connectivity

Overview As a Senior Telephony Software Engineer at Amazon Lab126, you will design and optimize the cellular telephony framework across Android devices to deliver reliable voice, data, and messaging experiences. You will own the application processor side of the mobile telephony stack, aligning carrier requirements with platform APIs and features like Wi‑Fi calling, eSIM provisioning, and 5G. You’ll collaborate with modem, OS, QA/certification, and cloud teams to deliver end‑to‑end telephony capabilities. This role offers impact across devices and carrier networks in a fast‑moving hardware R&D environment. Compensation / Benefitshealth insurance (medical, dental, vision)RSUs and sign‑on payments401(k) matchingpaid time offparential leaveflexible spending accounts ResponsibilitiesDesign, implement, and optimize telephony framework components (calling, data connectivity, messaging, advanced features)Lead architecture decisions and drive complex technical issue resolutionImprove call setup latency, network registration, and power efficiency acrossCarrier networks and device configurationsCollaborate cross‑functionally with modem/baseband, OS platform, QA/certification, and cloud services teamsPartner with product management to translate customer experience goals into technical designsParticipate in design reviews and own critical architectural decisions Key requirements3+ years of non‑internship software development2+ years contributing to systems architecture and designExperience with at least one modern language (Java, C++, or C#)Bachelor's degree or equivalent3+ years of Android development experienceExperience with SDLC including coding standards, code reviews, build, testing, and operations (preferred)Telecommunications industry experience (preferred)cross‑functional collaborationproblem solvingstrong communicationAndroid developmentobject‑oriented designtelephony framework knowledge