Swift 5.0

Objective-C

iOS SDK

UIKit

Core Data

Core Graphics

Core Animation

SQLite

Realm

JSON

REST APIs

HTTPS

Grand Central Dispatch (GCD)

Asynchronous programming

Multi-threaded programming

xctest

On-device data encryption

Collaboration and teamwork

High-pressure environment management

Problem-solving

Communication skills

Attention to detail

Design thinking

Adaptability