Senior Software Development Engineer – iOS
📍 Location: Philadelphia, PA – Hybrid
💼 Type: W2 no C2C/1099
💰 Rate: Depends on experience/resume
📌 Visa: Open to valid work authorizations except H1B, OPT, and CPT
⏳ Experience: 5+ years of professional iOS development
Job Summary
We are looking for a Senior Software Development Engineer – iOS to join a team building customer-facing mobile experiences used by millions of users.
The ideal candidate will have strong hands-on experience developing native iOS applications using Swift, with expertise in SwiftUI, UIKit, modern iOS architecture, REST APIs, Swift Concurrency/Combine, and Spec-Driven Development (SDD).
This role requires strong technical ownership, collaboration with Product, Design, QA, Architecture, and Platform teams, and the ability to deliver scalable, high-quality mobile applications.
Key Responsibilities
- Design, develop, test, and maintain high-quality native iOS applications using Swift and modern iOS frameworks.
- Lead technical solution design and implementation for customer-facing iOS experiences.
- Develop features related to device upgrades, trade-ins, plan management, line/device management, billing, payments, onboarding, activation, international services, and customer engagement.
- Integrate iOS applications with RESTful APIs and backend services.
- Participate in architecture, design, and code reviews.
- Drive engineering best practices, quality initiatives, and technical excellence.
- Mentor and guide other engineers.
- Collaborate closely with Product, UX, QA, and Platform teams.
Required Qualifications
- Bachelor's degree in Computer Science, Engineering, or related field, or equivalent professional experience.
- 5+ years of professional iOS development experience.
- Expert-level proficiency in Swift.
- Strong experience with SwiftUI and UIKit.
- Experience with MVVM, Clean Architecture, and Dependency Injection.
- Strong knowledge of the iOS SDK and application lifecycle.
- Experience integrating REST APIs and handling client-server interactions.
- Experience with Swift Concurrency (async/await) and/or Combine.
- Hands-on experience with Spec-Driven Development (SDD), including working from detailed specifications, acceptance criteria, API contracts, and architecture designs.
- Experience with Git-based source control and modern development workflows.
- Strong debugging, troubleshooting, and performance optimization skills.
- Excellent communication and collaboration skills.
Preferred Qualifications
- Production experience with SwiftUI.
- Experience with modular architectures and reusable frameworks.
- Experience with XCTest, unit testing, integration testing, and UI testing.
- Experience with feature flags and staged rollouts.
- Familiarity with mobile analytics, observability, and experimentation platforms.
- Experience working in Agile/Scrum environments.
- Experience mentoring engineers and leading technical initiatives.
- GraphQL / GraphQL API integration experience is a plus.
Technical Skills
Languages & Frameworks:
Swift, SwiftUI, UIKit, Combine, Swift Concurrency, async/await
Architecture:
MVVM, Clean Architecture, Dependency Injection, Modular Architecture, REST APIs
Tools & Platforms:
Xcode, Git, GitHub Enterprise, CI/CD, Feature Flag Frameworks, Mobile Analytics & Monitoring
Important Requirements
📍 Philadelphia, PA – Hybrid
🚫 No H1B / OPT / CPT
💼 W2 only
🎯 Strong hands-on iOS + Swift experience required
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