Top Android Developer Jobs in Philadelphia, PA

Build and maintain Android applications in a modular monorepo, including customized Launcher functionality, Jetpack Compose UI, shared libraries, and new features. Diagnose and resolve ANRs, crashes, performance issues, and memory problems using production telemetry. Own app modules, architecture, bugs, and design over time while shipping features through Remote Config and A/B testing. Collaborate effectively across time zones and continuously improve development practices.

Develop scalable enterprise Android applications using Kotlin, Java, Android SDK, Jetpack, and modern architecture patterns. Build accessible interfaces, integrate backend services, implement asynchronous processing and data persistence, and develop commerce features such as search, checkout, payments, and order processing. Write automated tests, troubleshoot production issues, support releases and CI/CD, conduct code reviews, and collaborate with product, design, backend, and QA teams. Travel and relocation across unanticipated U.S. locations are required.

Develop and enhance Android SDKs, tools, and applications supporting payment transactions and kiosk-mode devices. Design, implement, debug, and optimize complex software using Kotlin, Jetpack Compose, Coroutines, Flow, dependency injection, and large multi-module architectures. Integrate REST services, payment hardware, peripheral devices, and vendor SDKs while contributing to code reviews, technical planning, testing, and architectural decisions. The role also supports secure, PCI/EMV-compliant commerce applications.

Develop and modify Android system services, privileged APIs, and OS-level AI integrations. Build interfaces for AI agents to interact with Android functionality while managing permissions, IPC, application lifecycles, background execution, performance, and resource consumption. Collaborate with agent engineers and debug Android Framework or AOSP components. Preferred experience includes custom ROMs, AOSP contributions, C++, System UI, background services, and power management.

Integrate AOSP or custom Android ROMs with smartphone hardware, including BSPs, vendor HALs, firmware, drivers, sensors, cameras, audio, modems, Wi-Fi, and Bluetooth. Support device bring-up and boot processes, troubleshoot hardware and firmware compatibility, collaborate with ODMs, OEMs, and chipset vendors, and optimize power consumption and hardware performance.

Develop and modify Android Framework components, system services, privileged APIs, and secure AI-agent integrations. The role focuses on application lifecycle, permissions, background execution, first-party app integration, OS stability, performance, and collaboration with agent engineers. Candidates need strong Android development experience, Java or Kotlin proficiency, AOSP knowledge, and familiarity with Binder IPC, permissions, and complex Android debugging. Custom ROM, C++, Linux, Android security, power management, and system-level shipping experience are preferred.

Build and deliver Android features for rewards discovery, shoppable content, partner integrations, and purchase attribution. Develop within a large modular Kotlin and Jetpack Compose codebase, collaborate with product, design, backend, data, and marketing technology teams, and improve performance, reliability, engagement, and rewards redemption through testing, profiling, and scalable architecture.

Develop and release Android features for rewards discovery, shoppable content, partner integrations, and purchase attribution. Build within a large modular architecture using Kotlin, Jetpack Compose, MVVM, Hilt, Room, and modern Android tooling. Collaborate with product, design, backend, data, and marketing technology teams while improving performance, reliability, engagement, and rewards redemption across Fetch’s mobile platform.

Develop and deliver native iOS features for MyFitnessPal’s AI-powered food logging experience. Responsibilities include implementing user interfaces, optimizing performance and network communications, building tested and secure solutions, collaborating with product and design teams, researching technical approaches, mentoring developers, and contributing to deployment and engineering best practices.

Build and scale customer-facing Android marketplace applications using Kotlin, Compose, and modern Android architecture. Own complex features end to end, lead technical direction, improve testing and CI/CD, support releases and observability, and modernize legacy codebases. Use AI tools for coding, testing, debugging, documentation, and operational efficiency while mentoring engineers and collaborating with product, design, backend, platform, QA, and iOS teams.

Design, build, and maintain high-quality Android applications using Kotlin/Java. Collaborate with product, design, backend, and QA teams to implement features, fix bugs, optimize performance, and ensure code quality through testing, code reviews, and CI/CD workflows.

Lead the architecture, development, testing, deployment, and maintenance of Android applications supporting Philadelphia City services. Build Kotlin-based applications with modern Android frameworks, integrate APIs and backend services, ensure accessibility, security, and performance, and support Google Play submissions. Collaborate with product, design, engineering, and City stakeholders; conduct code reviews, mentor developers, troubleshoot mobile issues, and contribute to CI/CD, monitoring, and agile delivery practices.

Own Android features end to end, from identifying user needs through development, launch, and performance evaluation. Build idiomatic, well-tested Kotlin and Jetpack Compose applications, shape product direction, and collaborate with design, leadership, and engineers across Android, iOS, web, and backend. Drive decisions in ambiguous situations, improve mobile engineering standards, and contribute to product strategy while working remotely with distributed teams.

Lead the architecture and delivery of TeamSnap’s Android advertising platform, including native, display, and video ad experiences. Build privacy-conscious consent and measurement capabilities, optimize performance, shape Kotlin and Jetpack Compose architecture, and lead cross-team technical initiatives. Partner with advertising, product, design, legal, and data teams while mentoring engineers and establishing Android standards.

Develop and lead frontend platform engineering for native and hybrid mobile applications. Build reusable, well-tested Android and iOS SDK components, contribute to architecture and system design, collaborate with product and engineering teams, own customer-facing deliverables, and identify product improvements while maintaining strong engineering standards.

Build and own Android growth and monetization experiments across subscriptions, pricing, advertising, purchases, and upgrade flows. Partner with product, design, data science, and analytics to instrument experiments, manage staged rollouts, monitor performance, and act on results. Use AI tools throughout development, contribute to Android architecture and engineering practices, participate in on-call support, mentor engineers, and help scale reliable mobile experiences to tens of millions of users.

Build and improve scalable, accessible Android applications for Wikipedia and Wikimedia users worldwide. Responsibilities include leading technical discovery and system design, implementing Kotlin and Jetpack Compose features, optimizing performance, developing testing and observability practices, managing delivery risks and scope, and collaborating with product, design, analytics, and engineering teams.

Build and scale customer-facing Android marketplace features using Kotlin, Jetpack Compose, and modern Android technologies. Develop tested, production-ready software, use AI tools for coding and debugging, maintain reliability, and collaborate with Product, Design, backend, iOS, QA, and senior Android engineers. Contribute to platform concerns including authentication, analytics, feature flags, and CI while growing end-to-end feature ownership.

Build and maintain iOS features for Comcast's Home Security IoT products. Collaborate with product, backend, and device teams to deliver end-to-end solutions, contribute to app architecture, implement Spec-Driven Development UIs, integrate REST APIs, improve performance and reliability, and debug complex production/connectivity issues.

Develop and maintain Android features for Comcast's Home Protection mobile experiences, collaborating with product, backend, and device teams. Contribute to app architecture, implement Spec-Driven Development UI frameworks, integrate REST APIs, improve performance and reliability, debug production connectivity issues, and participate in code reviews to support scalable, maintainable Kotlin codebases.

Design, build, and ship native Android features in Kotlin for BJAK's AI Neobank app. Integrate backend APIs, improve performance, reduce crashes, collaborate with product/design, use analytics to iterate, and add on-device AI where it improves UX.

Build and ship native Android features for onboarding, accounts, cards, payments, transfers, rewards and AI-assisted journeys. Turn complex financial flows into simple mobile experiences, own app quality (performance, crashes, loading states), integrate APIs and secure authentication, and iterate using production feedback and analytics while collaborating with product, design, backend and AI engineers.

Designs, develops, and maintains automated test frameworks and suites for native Android applications. Integrates mobile testing into CI/CD pipelines, executes tests across emulators and physical devices, investigates failures, improves application testability, and validates behavior across Android versions and device configurations. Collaborates with Android Engineering, QA, and Product teams while contributing to automation architecture, tooling standards, and testing best practices.

Develop and maintain scalable native Android applications using Kotlin, focusing on performance, usability, architecture, testing, and code quality. Collaborate with product, design, and backend teams; troubleshoot complex issues; maintain CI/CD workflows; document systems; lead technical initiatives; mentor junior engineers; and contribute to feature planning and estimation.

Build and ship features for a large-scale Android app using Kotlin and modern Android technologies. Responsibilities include writing tested code, collaborating with product and design teams, improving performance and stability, partnering on APIs and data flows, and participating in code reviews. The role is a full-time, long-term remote contract within the U.S.