Senior Mobile Application Developer

Job Title:

Senior Mobile Application Developer

Experience:
5+ Years

Work Mode:

Mode of Work : Hybrid (3-4 days a week at client office downtown)

Location:
Toronto

Employment Type:
Contract

Job Summary

We are looking for an experienced
Senior Mobile Application Developer
with strong expertise in
native iOS development (approximately 80%)
and working knowledge of
Android development (approximately 20%)
. The ideal candidate will have hands-on experience in designing and developing
secure, scalable, high-performance mobile applications
using modern mobile development frameworks, architecture patterns, and best practices.

This role requires strong proficiency in
Swift, UIKit, SwiftUI
, and iOS SDKs, along with the ability to support Android applications using
Kotlin/Java
. The candidate will collaborate with cross-functional teams including UX/UI designers, backend engineers, and QA to deliver high-quality mobile solutions.

Key Responsibilities

iOS Development (Primary – ~80%)

• Design, develop, test, and maintain
  native iOS applications
  using
  Swift, UIKit, and SwiftUI
  .
• Work extensively with
  Xcode, iOS SDKs
  , and follow Apple
  Human Interface Guidelines (HIG)
  .
• Implement scalable and maintainable mobile architectures such as
  MVVM, Clean Architecture
  , or similar patterns.
• Integrate and optimize
  RESTful APIs
  , backend services, and handle JSON parsing efficiently.
• Ensure application performance, stability, responsiveness, and compatibility across iOS devices.
• Apply
  enterprise-grade security standards
  , including secure authentication, encryption, and data protection.
• Write and maintain
  unit tests and UI tests
  to ensure application quality.
• Participate in
  peer code reviews
  , ensuring coding standards and best practices are followed.
• Collaborate with UX/UI teams to build intuitive, user-friendly, and accessible mobile experiences.
• Support App Store submission processes and ensure compliance with Apple guidelines.

Android Development (Secondary – ~20%)

• Provide development support and enhancements for
  native Android applications
  using
  Kotlin and/or Java
  .
• Troubleshoot, debug, and resolve Android-specific performance or compatibility issues.
• Support Android application maintenance and contribute to feature improvements.
• Participate in Android code reviews and contribute to consistent mobile design practices across platforms.
• Work with cross-platform teams to ensure alignment in UI/UX and functionality between iOS and Android apps.

Required Skills & Qualifications

• 5+ years of experience
  in mobile application development with strong focus on iOS.
• Strong proficiency in:
• Swift
• UIKit / SwiftUI
• Xcode, iOS SDKs
• Hands-on experience with modern architecture patterns such as
  MVVM, Clean Architecture
  .
• Working knowledge of
  Android development
  using
  Kotlin and/or Java
  .
• Experience integrating
  REST APIs
  and handling JSON data formats.
• Strong understanding of mobile application security concepts:
• Authentication & Authorization
• Encryption
• Secure Storage (Keychain, etc.)
• Proficiency with
  Git version control
  .
• Experience working with
  CI/CD pipelines
  for mobile deployment.

Nice to Have (Preferred Skills)

• Experience working in
  Agile/Scrum environments
  .
• Knowledge of
  App Store deployment
  , release management, and publishing processes.
• Experience with enterprise mobility applications and large-scale mobile projects.
• Familiarity with performance monitoring tools and crash reporting tools.

Soft Skills

• Strong problem-solving and debugging skills.
• Excellent communication and collaboration abilities.
• Ability to work independently and as part of a cross-functional team.
• Strong attention to detail and commitment to delivering high-quality applications.