OIT is seeking a Senior Android Developer to lead the design, development, and maintenance of highquality Android applications that support City services and operations. This role will work closely with product managers, designers, backend engineers, and City department stakeholders to deliver secure, accessible, user centered mobile experiences.    The Senior Android Developer will strongly influence the full mobile development lifecycle from technical discovery and architecture through implementation, testing, deployment, and ongoing iteration. This role requires strong engineering expertise, a collaborative mindset, and a commitment to building digital tools that improve the lives of Philadelphia residents, businesses, and City employees.    Essential Functions  Design, build, and maintain advanced Android applications using Kotlin and modern Android frameworks like jetpack compose  Lead technical architecture decisions and establish best practices for Android development  Collaborate with product, design, and backend engineering teams to define requirements and deliver high‑quality features  Help to translate user needs and business goals into scalable, maintainable mobile solutions  Collaborate with UX/UI designers to implement pixel-perfect designs optimized for Android platforms and design conventions  Ensure applications comply with Google Play Store guidelines and submission requirements  Write clean, maintainable code following Android development best practices and coding standards  Integrate Android applications with APIs, backend services, and City data systems  Ensure applications meet standards for accessibility, security, and performance  Conduct code reviews, mentor junior developers, and contribute to team-wide engineering excellence  Implement automated testing, CI/CD pipelines, and monitoring tools to support reliable deployments  Troubleshoot and resolve technical issues across the mobile stack  Stay current with Android technologies, tools, and best practices, and advocate for continuous improvement  Support agile delivery practices, including sprint planning, standups, and retrospectives  Communicate progress, risks, and technical decisions clearly to technical and non‑technical audiences    Competencies, Knowledge, Skills and Abilities  Deep understanding of modern Android development principles and mobile UX patterns  Strong proficiency in native Android development with focus on Android platform optimization  Solid understanding of Android development fundamentals including Activities, Fragments, Services, and Content Providers  Experience with Android Studio, Gradle build system, and Android SDK tools  Knowledge of Material Design principles and Android UI/UX best practices  Understanding of Android app lifecycle, memory management, and performance  Ability to manage multiple priorities in a dynamic public‑sector environment  Commitment to equity, accessibility, and inclusive design  Ability to mentor and support other engineers  Strong problem-solving skills and ability to debug complex mobile applications  Familiarity with Google Play Console and app store submission processes  Experience with version control systems, preferably Git  Understanding of RESTful APIs and mobile app security best practices  Knowledge of automated testing frameworks for mobile applications  Excellent communication skills and ability to work in a collaborative team environment  While you won’t necessarily be working with these technologies every day, you should have a broad enough understanding of them to help support your team.  Understanding of the modern mobile platform and common architectures  Strong understanding of the key differences in supported hardware and features across the mobile device landscape  Server-side programming languages such as NodeJs (Typescript)  Command line and shell scripts  Web application security concerns and ways to mitigate them  SQL, and usage of relational databases such as PostgreSQL, Oracle, MSSQL  Amazon Web Services (AWS)  Containerization  Automated test/deployment pipelines  API design and development