iOS Development Engineer (Eng3)

Make your mark at Comcast -- a Fortune 30 global media and technology company. From the connectivity and platforms we provide, to the content and experiences we create, we reach hundreds of millions of customers, viewers, and guests worldwide. Become part of our award-winning technology team that turns big ideas into cutting-edge products, platforms, and solutions that our customers love. We create space to innovate, and we recognize, reward, and invest in your ideas, while ensuring you can proudly bring your authentic self to the workplace. Join us. You’ll do the best work of your career right here at Comcast. (In most cases, Comcast prefers to have employees on-site collaborating unless the team has been designated as virtual due to the nature of their work. If a position is listed with both office locations and virtual offerings, Comcast may be willing to consider candidates who live greater than 100 miles from the office for the remote option.)

Job Summary

Comcast’s Global Product Organization (GPO) is seeking an iOS Development Engineer 3 to join the Connected Living Client Application Engineering team. We build and evolve the mobile platform that powers the native Xfinity iOS and Android apps—the one-stop shop for residential customers to view their bill, manage cloud-enabled gateways and smart home devices, troubleshoot their network, and set up parental controls and advanced security. The app serves millions of users and is expanding internationally as partners such as Sky Italia adopt the app. Learn more at https://www.xfinity.com/apps and check out the Xfinity iOS app in the Apple App Store!
This is not a typical feature development role. You will own the iOS platform foundations, including analytics and tracing, authentication, app startup and initialization, push notifications, release engineering (Xcode/SDK/Swift upgrades), and support-drop strategy. Your work accelerates product teams, improves reliability and performance at scale, and elevates the iOS developer experience across the organization.

Job Description

This role is based in our cutting-edge Comcast Technology Center in downtown Philadelphia. It is not approved for remote or virtual hire.
This position is ineligible for visa sponsorship.  To be considered for this role, you must be legally authorized to work in the United States and not require sponsorship for employment now or in the future.

What You'll Get to Work On

• iOS analytics and distributed tracing: defining event schemas, building client-side validation, instrumenting critical flows, and improving sampling and data quality
• Authentication flows using OAuth2 or OIDC with secure storage in Keychain
• App startup and initialization improvements to increase reliability and runtime performance
• APNs push infrastructure: token lifecycle, background delivery, and notification service/content extensions
• Xcode upgrades, Swift Package Manager and CocoaPods dependency management, and third-party SDK governance
• iOS OS support strategy: support-drop proposals, deprecation plans, and migration guidance across teams
• Internal Swift frameworks, reusable Swift Package Manager (SPM) packages, and tools that elevate the developer experience for feature teams
• Leading RFCs, proofs of concept, and design/code reviews to standardize architectures and accelerate migrations (e.g., UISceneDelegate, XCUITest, Swift concurrency)

What You'll Bring

• 5+ years of experience in technology development or services, including deep experience developing iOS apps in Swift
• Experience with GraphQL (Apollo or similar), Combine, and Swift Concurrency (async/await, actors, cancellation), plus familiarity with modern Swift frameworks such as SwiftUI and Codable
• Strong understanding of iOS authentication, networking, concurrency, and performance profiling using OAuth2 or OIDC, Keychain, URLSession, Swift Concurrency, and Instruments
• Practical knowledge of APNs, push token lifecycle, notification service/content extensions, background modes (remote notifications, background fetch, BGTaskScheduler), and reliability patterns
• Clear technical writing and cross-team collaboration skills, with comfort leading initiatives
• Excellent verbal, written, and presentation communication skills to explain complex technical decisions to both technical and non-technical stakeholders
• Passion for platform engineering and continuous improvement, with curiosity for new iOS technologies and self-motivation to grow
• Understanding of business fundamentals with the ability to translate product vision into technical strategy, balance cost and risk, and measure impact
• Experience building at scale on large teams, including modular architecture, internal frameworks, automated testing, observability, and code review
• Experience with testing practices including unit tests and XCUITests, and comfort with TDD where it adds value
• Interest in growing a strong engineering culture that values diversity, inclusion, mentorship, and shared standards

Nice to Have

• Familiarity with iOS platform capabilities such as localization, Core Location/GPS, and Bluetooth/CoreBluetooth
• Native app DevOps experience with CocoaPods, Swift Package Manager (SPM), Fastlane, and GitHub Actions
• Experience with Datadog RUM and related observability tooling
• Experience with design systems and accessibility (WCAG, Dynamic Type, VoiceOver)

Disclaimer:
This information has been designed to indicate the general nature and level of work performed by employees in this role. It is not designed to contain or be interpreted as a comprehensive inventory of all duties, responsibilities and qualifications.

Skills

Communication, GraphQL (Query Language), Mobile Development, Swift Programming Language

We believe that benefits should connect you to the support you need when it matters most, and should help you care for those who matter most. That's why we provide an array of options, expert guidance and always-on tools that are personalized to meet the needs of your reality—to help support you physically, financially and emotionally through the big milestones and in your everyday life.

Please visit the benefits summary on our careers site for more details.

Education

Bachelor's Degree

While possessing the stated degree is preferred, Comcast also may consider applicants who hold some combination of coursework and experience, or who have extensive related professional experience.

Certifications (if applicable)

Relevant Work Experience

5-7 Years

Comcast is an equal opportunity workplace. We will consider all qualified applicants for employment without regard to race, color, religion, age, sex, sexual orientation, gender identity, national origin, disability, veteran status, genetic information, or any other basis protected by applicable law.