Senior iOS Engineer — Scale Mobile Experiences

MARICI Solutions GmbH; Philadelphia (Philadelphia County); On-site; USD 120,000 - 180,000; Full time

Job summary

Comcast is seeking an experienced iOS Developer/Engineer to deliver scalable native iOS apps for Xfinity Mobile. You will collaborate with product, design, QA, architecture, and platform teams to ensure high-quality experiences powering millions of customers.

The role requires 5+ years of iOS experience, expertise with Swift, UIKit, and SwiftUI, and a strong grasp of modern architectures and REST APIs. Onsite in Philadelphia, with a long-term contract and agile collaboration across teams.

Qualifications

• 5+ years of professional iOS development experience.
• Expert proficiency in Swift.
• Strong understanding of UIKit and SwiftUI.
• Experience with MVVM, Clean Architecture, and Dependency Injection.
• Strong understanding of iOS SDK, lifecycle management, and Apple Human Interface Guidelines.
• Experience integrating REST APIs and handling complex client-server interactions.
• Experience with asynchronous programming using Swift Concurrency and/or Combine.
• Hands-on experience with SDD, collaborating across Product, Design, and Engineering teams to drive implementation from detailed specifications, acceptance criteria, API contracts, and architecture designs while ensuring high-quality delivery.
• Experience with Git-based source control workflows.
• Strong debugging, troubleshooting, and performance optimization skills.
• Excellent communication, collaboration, and problem-solving abilities.

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.
• Build experiences supporting: Device Upgrade & Trade-In; Mobile Plan Management; Line and Device Management; Billing & Payments; Mobile Onboarding & Activation; International Services; Push Notifications & Customer Engagement; Customer Education & Value Reinforcement.
• Integrate mobile applications with RESTful APIs and backend services.
• Participate in architecture reviews, design reviews, and code reviews.
• Drive engineering best practices, quality initiatives, and technical excellence.
• Mentor and guide engineers across the team.
• Collaborate with Product, UX, QA, and Platform teams to deliver customer-centric solutions.

Skills

Swift

SwiftUI

UIKit

Combine

Swift Concurrency

MVVM

Clean Architecture

Dependency Injection

Modular Architecture

REST API Integration

Git workflows

SwiftUI prod

Modular architecture

Automated tests

Feature flags

Observability

Agile/Scrum

Mentoring

GraphQL

Education

Bachelor's degree in Computer Science/Engineering or related field

Tools

Xcode

GitHub Enterprise

CI/CD Pipelines

Feature Flag Frameworks

Job description

Comcast is seeking an experienced iOS Developer/Engineer to deliver scalable native iOS apps for Xfinity Mobile. You will collaborate with product, design, QA, architecture, and platform teams to ensure high-quality experiences powering millions of customers.

The role requires 5+ years of iOS experience, expertise with Swift, UIKit, and SwiftUI, and a strong grasp of modern architectures and REST APIs. Onsite in Philadelphia, with a long-term contract and agile collaboration across teams.