Senior iOS Developer - SWIFT

Job Description :

We are looking for a highly skilled and passionate Senior iOS Developer to join our fintech engineering team and help build next -generation merchant -facing payment and banking applications.

You will work on scalable, secure, and high -performance iOS applications handling real -time transactions, merchant onboarding, settlements, analytics dashboards, and payment integrations.

Candidates with prior fintech, banking, payment, or merchant application experience will be highly preferred.

We are also looking for engineers who are comfortable leveraging modern AI-assisted development tools and exploring intelligent mobile experiences.

Key Responsibilities :

- Design, develop, and maintain scalable iOS applications using Swift and modern iOS frameworks.

- Build reusable, modular, and maintainable mobile components following MVVM / Clean Architecture principles.

- Collaborate with product managers, backend teams, QA, and designers to deliver high -quality mobile applications.

- Integrate RESTful APIs, third -party SDKs, payment gateways, and banking/fintech services.

- Work on merchant onboarding, transaction management, settlements, analytics dashboards, and payment workflows.

- Participate in complete app lifecycle management from development to App Store deployment.

- Implement secure coding standards and financial -grade mobile security practices.

- Work with encryption, secure storage, SSL pinning, Keychain, biometric authentication, and secure API communication.

- Ensure compliance with security and data protection best practices.

- Write unit test cases and UI test cases using XCTest.

- Debug and optimize application performance including memory usage, startup time, responsiveness, and crash reduction.

- Participate in code reviews and maintain coding standards and best practices.

- Work with crash monitoring and analytics tools such as Firebase Crashlytics.

- Contribute to CI/CD and automated deployment workflows.

Technical Skills and Experience :

- 2+ years of professional iOS development experience.

- Strong proficiency in Swift, Xcode, UIKit, SwiftUI, Auto Layout & Constraints.

- Strong understanding of MVVM / Clean Architecture, iOS App Lifecycle, Memory Management, Multithreading & Concurrency.

- Hands -on experience with RESTful APIs, URLSession / Alamofire, JSON parsing, offline storage, and synchronization.

- Good understanding of SSL Pinning, Keychain, Encryption techniques, Biometric Authentication, and secure data storage.

- Experience with Git / GitHub / Bitbucket, CocoaPods / Swift Package Manager (SPM), Firebase Crashlytics, and CI/CD pipelines.

- Experience writing Unit Tests, UI Tests, and Integration Tests using XCTest.

- Experience using AI -assisted development tools such as GitHub Copilot, ChatGPT, Claude, Gemini, Cursor, or similar tools.

- Good to have exposure to OpenAI APIs, CoreML, intelligent automation, AI -powered mobile features, and chatbot integrations.

Good to have :

- Exposure to Kotlin Multiplatform (KMP) or shared mobile architecture.

- Experience working on multi -tenant or white -label applications.

- Experience with payment SDK integrations.

- Published apps on the App Store.

Technology Stack at a Glance :

- UI : UIKit, SwiftUI, Auto Layout, XIB/Storyboard, Material Design

- Language : Swift, Kotlin Multiplatform (KMP), Objective-C (legacy support)

- Architecture : MVVM, Clean Architecture, Modular Architecture

- Async Programming : GCD, Async/Await, Combine

- Networking : URLSession, Alamofire, REST APIs, HTTPS/TLS, SSL Pinning

- Dependency Management : Swift Package Manager (SPM), CocoaPods

- Persistence : CoreData, UserDefaults, Keychain, SQLite

- Testing : XCTest, Unit Testing, UI Testing

- CI/CD : Fastlane, GitHub Actions, Bitrise, Firebase App Distribution, App Store Connect

- Fintech SDKs : Good to have knowledge of UPI SDK, Razorpay, PayU, Stripe, Tap To Pay iPhone

- Monitoring : Firebase Crashlytics, Analytics, Logging

- Security : Keychain, Biometric Authentication, SSL Pinning, Encryption, Jailbreak Detection

- KMP Exposure : Good to have exposure to Kotlin Multiplatform (KMP) shared business logic integration

- AI-Assisted Development : GitHub Copilot, ChatGPT, Claude, Gemini, Cursor, AI-powered code assistance

(ref:hirist.tech)