Senior iOS Developer

Overview

Job Description

Job Title: Senior iOS Developer

We are seeking a Senior iOS Developer to join our dynamic team and lead the development of scalable, high-performance iOS applications. The ideal candidate should have strong expertise in Swift, experience with scalable app architectures (MVVM, MVVM -C, VIPER, Clean Architecture), and a deep understanding of iOS UI/UX best practices. This role requires proficiency in concurrent programming, dependency injection, performance tuning, and CI/CD for iOS applications.

As a Senior iOS Developer, you will play a crucial role in architecting, building, and optimizing iOS applications while ensuring smooth user experiences and high-performance standards. You will collaborate with product managers, designers, and backend engineers to deliver top-notch mobile applications.

Primary Responsibilities

• Develop and Maintain Scalable iOS Applications:
• Write clean, maintainable, and well-documented Swift code following best practices.
• Architect scalable and maintainable iOS applications using MVVM, MVVM -C, VIPER, and Clean Architecture principles.
• Concurrency & Performance Optimization:
• Implement efficient concurrent operations using GCD, Operations, and async/await.
• Optimize app performance, battery consumption, and memory management using Instruments profiling.
• UI/UX & Animations:
• Implement custom UI components, animations, and transitions while adhering to Apple’s Human Interface Guidelines.
• Ensure smooth user experience with optimized layouts, animations, and interactions.
• Location Services & Offline Capabilities:
• Implement Geolocation services, including background location tracking.
• Develop offline caching and data synchronization strategies for seamless user experiences.
• API Integration & Security:
• Work with RESTful APIs, GraphQL, and WebSockets.
• Implement OAuth, JWT authentication, and secure data storage following security best practices.
• Testing & CI/CD Automation:
• Write unit tests, UI tests, and integration tests using XCTest, TDD/BDD methodologies.
• Set up and maintain CI/CD pipelines (Fastlane, Bitrise, GitHub Actions, or Jenkins).

Additional Responsibilities

• Mentorship & Code Reviews:
• Provide technical guidance and mentor junior developers.
• Conduct code reviews and ensure adherence to best coding practices.
• App Deployment & Maintenance:
• Handle App Store submission & review process to ensure smooth deployment.
• Monitor app performance using analytics, crash monitoring (Firebase, Sentry, etc.).
• Collaboration with Cross-Functional Teams:
• Work closely with backend engineers, designers, and product managers to deliver seamless features.
• Participate in Agile/Scrum sprint planning, backlog grooming, and retrospectives.

Required Skills & Qualifications

Must-Have Skills

• Expertise in Swift (7+ years of experience).
• Experience with scalable app architectures (MVVM, MVVM -C, VIPER, Clean Architecture).
• Strong knowledge of concurrency (GCD, Operations, async/await) and reactive programming (Combine).
• Proficiency in integrating and handling GeoLocation services, including background tracking.
• Hands-on experience with profiling, debugging, and performance tuning using Instruments.
• Deep understanding of Apple’s Human Interface Guidelines and best practices for UI/UX.
• Experience developing content-rich applications with complex animations and custom UI components.
• Proven track record of shipping successful iOS apps to the App Store.
• Strong knowledge of unit testing, UI testing, TDD/BDD, and XCTest framework.
• Ability to instrument mobile code for performance metrics, analytics, and crash reporting (Firebase, Sentry).
• Experience handling RESTful APIs, offline caching, and data synchronization.
• Knowledge of CI/CD pipelines for iOS apps (Fastlane, Bitrise, Jenkins, GitHub Actions).
• Familiarity with Dependency Injection frameworks.
• Experience with modularizing large iOS applications for maintainability.

Good-to-Have Skills

• Experience with SwiftData & Core Data.
• Knowledge of advanced security techniques (data encryption, secure storage, biometrics).
• Familiarity with accessibility standards and UI testing for accessibility.
• Experience with GraphQL API integration.
• Background in ARKit, CoreML, or other advanced Apple frameworks.

Skill Matrix

Skill

Proficiency Level

Swift (5.x)

Expert

App Architecture (MVVM, MVVM -C, VIPER, Clean Architecture)

Advanced

Concurrency (GCD, async/await, Operations)

Advanced

Combine (Reactive Programming)

Intermediate

Dependency Injection

Advanced

GeoLocation Services & Background Tracking

Advanced

Animations & Custom UI Components

Advanced

Apple Human Interface Guidelines (HIG)

Expert

Profiling & Performance Optimization (Instruments, Xcode Profiler)

Advanced

Unit Testing, UI Testing (XCTest, TDD, BDD)

Advanced

RESTful API Integration

Advanced

Security (OAuth, JWT, Secure Storage, Encryption)

Intermediate

CI/CD Pipelines (Fastlane, Bitrise, Jenkins)

Advanced

Agile/Scrum Development

Intermediate

Screening Questions

Technical Skills

• Can you explain the differences between MVVM, MVVM -C, VIPER, and Clean Architecture and when to use each?
• How do you handle concurrent tasks in Swift, and when would you use GCD vs. Operations vs. async/await?
• Have you worked with Combine for reactive programming? Can you explain how it compares to RxSwift?
• What strategies do you use for profiling and performance optimization in iOS apps?
• How do you handle offline caching and synchronization when working with RESTful APIs?

iOS Best Practices

• How do you ensure compliance with Apple’s Human Interface Guidelines (HIG)?
• Have you implemented background location tracking in an iOS app? What challenges did you face?
• Can you describe a complex UI animation you developed and how you optimized its performance?
• How do you instrument mobile code for tracking performance metrics, analytics, and crash reporting?

Testing & Deployment

• What is your experience with unit testing and UI testing using XCTest?
• Have you worked with CI/CD pipelines for iOS apps? What tools have you used?
• Can you walk through your experience submitting an app to the App Store and handling rejection cases?

Security & Architecture

• How do you implement secure authentication (OAuth, JWT) and data encryption in iOS apps?
• Have you worked on modularizing large iOS applications? How did you structure your modules?

Salary Expectation & Location

• Salary: Competitive based on experience
• Location: On-Site – Kalyan Nagar, Bengaluru
• Work Mode: Office-Based

Why Join Us?

• Work on cutting-edge iOS applications with the latest Swift technologies.
• Collaborate with a team of talented engineers in a fast-paced environment.
• Competitive salary, flexible work options, and career growth opportunities.

Job Type: Full-time

Pay: ₹359,256.21 - ₹1,544,907.62 per year

Schedule:

• Day shift

Work Location: In person