AMRUTH KALLYAM
Sunnyvale
Summary
An iOS Developer with 4+ years of professional experience building scalable, high-performance mobile applications using Swift, SwiftUI, UIKit, MVVM, Combine, and REST APIs. Strong background in enterprise-grade applications, clean architecture, performance optimization, and CI/CD automation. Experienced in collaborating with cross-functional teams and delivering production-ready apps used at scale.
Overview
5
5
years of professional experience
1
1
Certification
Work History
iOS Developer
GAO Tek Inc
Sunnyvale
05.2024 - Current
- Played a key role in developing and launching core features in the iOS app such as Product Search, Wishlist, Add to Cart, and Store Locator – ensuring each feature was user-friendly, fast, and reliable.
- Implemented modular features with MVVM – C architecture and different modules using SPM.
- Built the Product Detail Page using SwiftUI, incorporating dynamic layouts, image galleries, and stock availability from real-time APIs.
- Designed and implemented the Wishlist module, allowing users to save and manage favorite products, with offline support using CoreData.
- Developed the Store Locator feature using MapKit, integrating location services and filtering stores based on availability and distance.
- Migrated older UIKit screens to SwiftUI, reducing legacy code and improving maintainability and test coverage.
- Integrated backend services using custom network framework using URLSession to handle login, product data retrieval, and checkout flows.
- Worked with Firebase Analytics and Crashlytics to track feature usage and diagnose app issues in real-time.
- Participated in CI/CD pipeline setup using Jenkins and Fastlane, automating build, test, and deployment processes to TestFlight
iOS Developer
TCS
Bangalore
08.2022 - 12.2022
- Worked with Swift, SwiftUI, and UIKit to create responsive and reusable user interfaces, supporting both light and dark modes.
- Migrated Rest APIs to GraphQL, handling OAuth2-based login and session management with JWT and Keychain.
- Focused on offline-first design, leveraging CoreData and Realm to ensure smooth access to flight data and documents when mid-air or out of signal.
- Handled real-time push notifications through Firebase Cloud Messaging (FCM) and APNS for updates on flight changes and urgent alerts.
- Implemented background tasks using BGTaskScheduler, allowing silent syncs and background refreshes without draining device battery.
- Contributed to the app's architecture by introducing MVVM-C with dependency injection using Swinject, improving testability and code structure.
- Wrote unit and UI tests using XCTest, XCUITest, Quick/Nimble, and SnapshotTesting, which helped us catch issues early and ensure UI consistency.
- Automated build and release pipelines using Fastlane and Jenkins, pushing stable builds to TestFlight and reducing manual deployment overhead.
Data Analyst
DXC
01.2021 - 07.2022
- · Developed core features including Now Playing, Upcoming Releases, Trailer Playback, Theater Locator, and Ticket Booking.
- · Built an immersive trailer experience using AVKit and AVFoundation with custom UI overlays and gestures, optimized for both Wi-Fi and cellular networks.
- · Integrated third-party APIs like Fandango and Google Places to display real-time showtimes and nearby theater locations.
- · Designed and implemented the dynamic theming engine in UIKIT to change app appearance based on movie branding and events.
- · Developed secure payment workflows for ticket purchases using Apple Pay and integrated loyalty rewards with Keychain-backed user sessions.
- · Worked extensively with Combine and UIKIT to build reactive views that updated with real-time backend data.
- · Used URL Session and RESTful APIs through Alamofire and Apollo to fetch movie metadata, schedules, and user data.
- Ensured smooth offline access by caching essential content using CoreData and custom caching layers.
- Handled push notifications using Firebase Cloud Messaging (FCM), including segmented notifications for pre-release and premiere updates.
- Collaborated with UI/UX teams through Figma and Zeplin to bring cinematic designs to life with animations and transitions using UIViewPropertyAnimator and Lottie.
- I led the test automation effort using XCTest, SnapshotTesting, and XCUITest to ensure high reliability before releases.
Education
Master's - Advanced Data Analytics
University of North Texas at Denton
Denton, TX05.2024
BE - Computer Science and Engineering
Dayananda Sagar University
Bengaluru, India05.2021
Skills
- Swift, SwiftUI, UIKit, Auto Layout
- MVVM, MVVM-C, Clean Architecture
- Combine, async/await, GCD
- CoreData, UserDefaults, FileManager
- URLSession, REST APIs, JSON parsing
- Push Notifications
- XCTest, XCUITest
- Unit Testing & UI Testing
Certification
AWS: Associate Developer
Timeline
iOS Developer
GAO Tek Inc
05.2024 - Current
iOS Developer
TCS
08.2022 - 12.2022
Data Analyst
DXC
01.2021 - 07.2022
Master's - Advanced Data Analytics
University of North Texas at Denton
BE - Computer Science and Engineering
Dayananda Sagar University