Senior Software Engineer – Mobile Development (iOS)

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 iOS Developer to lead the design, development, and maintenance of high quality iOS 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 iOS 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 iOS applications using Swift and modern iOS frameworks  Lead technical ios architecture decisions and establish best practices for mobile development  Collaborate with product, design, and backend engineering teams to define requirements and deliver high quality features  Translate user needs and business goals into scalable, maintainable mobile solutions  Collaborate with UX/UI designers to implement pixel-perfect designs optimized for iOS platforms  Integrate iOS 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 iOS 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 nontechnical audiences  Competencies, Knowledge, Skills and Abilities  Deep understanding of modern iOS development principles and mobile UX patterns  Ability to balance long‑term technical strategy with hands‑on implementation  Ability to manage multiple priorities in a dynamic public‑sector environment  Commitment to equity, accessibility, and inclusive design  Strong analytical and debugging skills  Ability to mentor and support other engineers  Solid understanding of iOS development fundamentals including UIKit, Core Data, and iOS frameworks  Experience with Xcode, Interface Builder, and iOS development tools  Knowledge of Apple's Human Interface Guidelines and iOS design principles  Proficiency in Swift/Objective-C programming languages  Familiarity with App Store Connect and iOS app submission processes  Strong problem-solving skills and ability to debug complex mobile applications  Experience with version control systems, preferably Git  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 architecture   Strong understanding of the key differences in supported hardware and features across the mobile device landscape   One or more cross platform mobile frameworks  Server-side programming languages such as Node.js  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 iOS development experience.   Supervisory or management experience a plus  Strong proficiency in Swift, Xcode, and modern iOS frameworks (UIKit, SwiftUI, Combine, etc.)  Experience building and deploying applications to the App 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 optimization  Excellent problem‑solving skills and attention to detail  Strong communication skills and experience collaborating with cross‑functional teams  Salary Range: $105,000 - $110,000 All applications must include a cover letter. Applications without a cover letter will be considered incomplete.   Have developed and deployed at least one iOS application to the Apple App Store  Demonstrate proficiency in React Native development through portfolio or work samples Did you know?  We offer Comprehensive