Senior Software Engineer – Mobile Development (Android)

A best-in-class city that attracts best-in-class talent, Philadelphia is an incredible place to build a career. From our thriving arts scene and rich history to our culture of passion and grit, there are countless reasons to love living and working here. With a workforce of over 30,000 people, and more than 1,000 different job categories, the City of Philadelphia offers boundless opportunities to make an impact. As an employer, the City of Philadelphia values inclusion, integrity, innovation, empowerment, and hard work above all else. We offer a vibrant work environment, comprehensive health care and benefits, and the experience you need to grow and excel. If you’re interested in working with a passionate team of people who care about the future of Philadelphia, start here. What We Offer: Impact - The work you do here matters to millions. Growth - Philadelphia is growing, why not grow with it? Diversity & Inclusion - Find a career in a place where everyone belongs. Benefits - We care about your well-being. 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  We care more about what you can do than where you learned how to do it. That said, a bachelor’s degree is a good foundation for the work, and job-related experience around the competencies above is acceptable as well.  5+ years of professional Android development experience.   Prior Team leadership or seniority is a plus  Strong proficiency in Kotlin, Android Studio, and modern Android frameworks (Jetpack, Compose, Coroutines, etc.)  Experience building and deploying applications to the Google Play Store or enterprise distribution  Experience integrating RESTful APIs and working with backend services  Familiarity with agile or iterative development processes  Strong understanding of mobile architecture, design patterns, and performance