Engineer 3 - iOS Developer

Comcast brings together the best in media and technology. We drive innovation to create the world's best entertainment and online experiences. As a Fortune 50 leader, we set the pace in a variety of innovative and fascinating businesses and create career opportunities across a wide range of locations and disciplines. We are at the forefront of change and move at an amazing pace, thanks to our remarkable people, who bring cutting-edge products and services to life for millions of customers every day. If you share in our passion for teamwork, our vision to revolutionize industries and our goal to lead the future in media and technology, we want you to fast-forward your career at Comcast.

Job Summary

Responsible for translating code into user-friendly applications. Collaborates with internal teams to develop functional mobile applications while working in a fast-paced environment. Develops application programming interfaces (APIs) to support mobile functionality while keeping up to date with terminology, concepts and best practices for coding mobile apps. Has in-depth experience, knowledge and skills in own discipline. Usually determines own work priorities. Acts as resource for colleagues with less experience.

Job Description

Job Title: Senior iOS Development

Location: Chennai

Duration: Full Time

Experiences: 5 years to 7.5 years

Notice period: Maximum 60 days

Skills & Experience

Core iOS Expertise

• 5+ years of experience developing native iOS applications in production environments.
• Strong proficiency in Swift, including async/await and modern concurrency patterns.
• Experience with SwiftUI and/or UIKit in production applications.
• Solid understanding of iOS fundamentals, including view lifecycle, app state management, and system services.
• Experience with common architectural patterns (e.g., MVVM or similar).

Concurrency, Performance & Tooling

• Strong understanding of multi-threading and concurrency, including Swift Concurrency and structured concurrency.
• Hands-on experience with performance profiling and optimization using Instruments.
• Strong debugging skills using Xcode and iOS diagnostic tools.
• Familiarity with network debugging tools such as Charles Proxy.

Media & Networking

• Experience implementing video playback and media experiences using native iOS frameworks.
• Working knowledge of streaming concepts and performance considerations for mobile video.
• Experience integrating REST APIs, handling JSON payloads, and understanding REST concepts.
• Experience with GraphQL is a plus.

AI & Automation

• Proficient in integrating AI-assisted development workflows into mobile engineering processes, including code generation, refactoring, test creation, and documentation using tools such as GitHub Copilot, M365 Copilot, or equivalent.
• Experience leveraging LLM‑driven API design tools (e.g., OpenSpec) to define interfaces, generate stubs, validate schema consistency, and automate downstream client/server code generation.
• Ability to evaluate and apply AI-based tools for improving developer productivity, including static analysis, UI generation, performance tuning, and test coverage expansion.
• Familiarity with model-driven development workflows, using AI to translate product requirements into engineering artifacts (design docs, acceptance tests, mobile UI flows).
• Comfort operating in an AI-augmented development environment, including prompt engineering, validation of AI-generated output, and enforcing quality gates to ensure correctness and maintainability.
• Demonstrated ability to integrate mobile apps with AI-backed services, such as on-device ML frameworks, cloud inference APIs, semantic search, or conversational interfaces.

Engineering Practices & DevOps

• Strong command of Git, including collaborative workflows, branching strategies, and pull requests.
• Experience writing unit and UI tests using XCTest / XCUITest.
• Familiarity with Swift Package Manager and modular app development.
• Experience with CI/CD pipelines, build automation, and release processes.
• Exposure to DevOps/SRE practices such as monitoring, incident response, and performance observability is a plus.

Collaboration & Communication

• Excellent verbal and written communication skills, able to convey complex technical topics clearly.
• Proven experience working cross-functionally with Product, UX, QA, and platform teams.
• Comfortable operating in multi-team, multi-vendor environments with evolving requirements.

Preferred / Nice to Have

• Experience building consumer-facing apps at scale (sports, media, streaming, ticketing, or live events).
• Familiarity with Combine, GraphQL, or advanced Swift concurrency patterns.
• Experience with device capabilities such as location, Bluetooth, or notifications.
• DevOps/native build tooling experience (Fastlane, Jenkins, GitHub Actions).
• Passion for innovation, continuous learning, and contributing to a strong engineering culture.

Core Responsibilities
Plan and design mobile software including writing, analyzing, and testing Android/IOS software code.
Deliver documentation on the software development and implementation process.
Design new software, supports applications under development, designs the prototype application and customizes current applications.
Assist with the software update process for existing applications, and roll-outs of software releases.
Build native mobile applications with an understanding of accessibility, localization, and offline needs.
Create, maintain, and implement the source code that makes up the application or program.
Develop and conduct routine maintenance on code to validate front-end, middleware, and database systems.
Communicate with others to repair broken automation scripts and ensure delivery of quality solutions.
Conduct testing, releasing and support of the application.
Research and analyze technical references to obtain knowledge and gain exposure on the latest developments in technology.
Research, write, and edit documentation and technical requirements, including software design evaluation plans, test results, and technical documentation.
Work with the Quality Assurance team to determine if applications fit specification and technical requirements .
Consistent exercise of independent judgment and discretion in matters of significance.
Regular, consistent and punctual attendance. Must be able to work nights and weekends, variable schedule(s) as necessary.
Other duties and responsibilities as assigned.

Employees at all levels are expected to:

Understand our Operating Principles; make them the guidelines for how you do your job.
Own the customer experience - think and act in ways that put our customers first, give them seamless digital options at every touchpoint, and make them promoters of our products and services.
Know your stuff - be enthusiastic learners, users and advocates of our game-changing technology, products and services, especially our digital tools and experiences.
Win as a team - make big things happen by working together and being open to new ideas.
Be an active part of the Net Promoter System - a way of working that brings more employee and customer feedback into the company - by joining huddles, making call backs and helping us elevate opportunities to do better for our customers.
Drive results and growth.
Support a culture of inclusion in how you work and lead.
Do what's right for each other, our customers, investors and our communities.

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.
 

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.