Senior Software Engineer – Mobile Development (iOS)

About the Role

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.

Responsibilities

• 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 non-technical audiences

Requirements

• 5+ years of professional iOS development experience
• 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
• 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

Skills

• 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
• 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
• Experience with one or more cross-platform mobile frameworks
• Understanding of server-side programming languages such as Node.js
• Familiarity with command line and shell scripts
• Knowledge of web application security concerns and ways to mitigate them
• Experience with SQL and usage of relational databases such as PostgreSQL, Oracle, MSSQL
• Familiarity with Amazon Web Services (AWS)
• Understanding of containerization
• Experience with automated test/deployment pipelines
• Knowledge of API design and development

Qualifications

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. Supervisory or management experience is a plus.

Benefits

• Comprehensive health coverage for employees and their eligible dependents
• Paid vacation, sick leave, and holidays
• Generous retirement savings options
• Public Service Loan Forgiveness program eligibility
• Free SEPTA public transportation for eligible City employees (full-time, part-time, or provisional)
• Tuition discounts and scholarships through partnerships with over a dozen local colleges and universities (savings of 10% to 40%, sometimes extending to spouses and dependents)

Pay

Salary Range: $105,000 - $110,000

Additional Information

The successful candidate must be a city of Philadelphia resident within six months of hire.