SUMMARY:

• Experienced in Swift through Swift 4 and Objective - C programming using iOS to produce high quality iOS enterprise, customer-facing mobile applications.
• Designed applications using Storyboard, Xibs, and programmatically UI building.
• Capable of doing multitasking at work and taking up challenges, also energetic and passionate of learning new concepts, methods and technologies and keep myself updated.
• Knowledge of professional software engineering practices and best practices for the full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations.
• Worked with QA leads, graphic design leads, project managers to effectively develop applications.
• Clear knowledge on storyboard, user defaults, Map-Kit, Core Data, Multithreading, UI alert, Delegates/ Protocol and categories.
• Good understanding of Memory Management: ARC and non-ARC in iOS development.
• Implementing multi-threading using both Grand Central Dispatch (GCD) and NSOperationQueue
• Good hands on experience with Frameworks such as: iPhone SDK, UIKit, MapKit, Speech, AVFoundation, CoreData, CoreLocation, Social, XCTest, Alamofire, SDWebImage, QuartzCore, Crashlytics, Core Bluetooth, Core Graphics, Appkit and CoreMotion
• Source control with Git, Stash, SourceTree, SVN.
• Skilled in integrating RESTful and SOAP web service communication within iOS using AFNetworking, NSURL Session, as well as parsing data responses such as XML, JSON

TECHNICAL PROFILE:

Programming: Swift - Swift 4

Objective C: IDE: XCode, Visual Studio

Programming: Java, PHP, C, C++

Python iOS / Development: Firebase

Cocoa Touch: Handoff

Document Picker: AirDrop, TextKit

UIKit, UI Dynamics: Multi-Threading

Auto Layout, Storyboards: XIBS, NIBS

UI State Preservation: Local Notifications

Gesture Recognizers: Continuous integration

Jenkins, Hudson, Travis: Project Tools

Jira, Kan Ban, Confluence, Trello, Slack iOS Tools: Instruments, Carthage, Cocoapods

Miscellaneous: Photoshop, Final Cut Pro, Premier Pro

NETWORK: AlamoFire, AFNetworking iOS / Development Skills

Reachability, URLSession: REST, JSON, SOAP, XML

NSJSONSerialization: NSXMLSerialization

Apple Push Notification Service: NSUserDefaults

NSNotificationCenter: MessageUI, AddressBook.

GCD, NSOperations: Core Plot, Core Graphics

AVFoundation: VERSION CONTROL

Git, GitHub, SourceTree, BitBucket, Tower, SVN: TESTING

TDD, Unit Testing, TestFlight, XCTest: Automated Testing

DESIGN PATTERNS: Singleton, State, Visitor, Proxy, Façade, Builder, Bridge, Blockchain, Reactor

ARCHITECTURE: MVC, MVVM, MVP

PROFESSIONAL EXPERIENCE:

Confidential, Seattle, WA

Senior iOS Mobile App Developer

Responsibilities:

• Worked closely with SMEs and stakeholders to develop custom solution.
• Implemented the app using Swift 3 and Swift 4 in Xcode IDE.
• Implemented Reachability communication with back-end services using Alamofire.
• Created test cases to streamline and optimize code with XCTest.
• Strictly followed MVVM design patterns for modular and testable code structure
• Architected on-boarding with UX-Designers for great user experience
• Managed and architected several view controllers using auto layout programmatically.
• Implemented Auto Layout constraints to ensure graceful orientation handling and adapting to different screen sizes, including adapting the app for the iPhone X
• Developed custom navigation between views using Navigation Controllers, Gesture Recognizer, and custom View Controller transitions
• Made modifications to Jenkins configuration - added automation of builds upon Pull Request
• Develop dynamic configuration to switch between web service calls.
• Created blocks to respond to service requests in order to maintain app architecture.
• Primary architecture used with MVVM and Design Patterns (Singleton, Decorator, Façade, Command, Proxy)

Confidential, Issaquah, WA

iOS Application Developer

Responsibilities:

• Implemented the iOS mobile app in Swift and Objective-C using XCode IDE.
• All web communications are performed in background threads to enhance performance and the user experience.
• Utilized GCD/NSOperation multithreading techniques for downloading images on background thread so as to not lock up the UI and ongoing animations
• Configured script to use in Jenkins server.
• Designed and implemented native iOS solutions that utilize REST web services for integration with back end processes.
• Profiled the application extensively using Instruments to improve performance throughout multiple sprints.
• All web communications are performed in background threads to enhance performance and the user experience.
• Coordinated with QA testers for end-to-end unit testing and post-production testing.
• Wrote Unit Tests for code using XCTest library

Confidential, Mt. Prospect, IL

iOS Mobile Software Engineer

Responsibilities:

• Implemented the iOS app in Swift and Objective-C using XCode.
• Coordinated with QA testers for end-to-end unit testing and post-production testing.
• Wrote Unit Tests for code using XCTest library.
• Implemented logic to connect to server using Alamofire.
• Invoked RESTful web service calls using AFNetworking.
• Participated in review meetings and took the initiative to meet the QA testing targets.
• Drafted technical documents and whitepapers.
• Designing, developing, testing and implementation of app in App Store.
• Involved in the entire product development life cycle.
• Utilized GCD/NSOperation multithreading techniques for downloading images on background thread so as to not lock up the UI and ongoing animations
• Implemented logic to connect to server in order to download document data using GCD

Confidential, Richfield, MN

Mobile iOS Developer

Responsibilities:

• Primarily developed in Objective-C, and started adding classes in Swift towards the end of the project
• Used Xcode IDE for programmatic development.
• Used Interface Builder and Storyboards for UI following UX specifications from designers.
• Performed to complete unit testing, integration testing and regression testing the application.
• Invoked RESTful web services using AFNetworking and parsed JSON responses using NSJSONSerialization.
• Regularly performed code reviews to ensure efficiency, readability, and maintainability.
• Recommended and executed plans to improve development tools and processes.
• Worked on development team with 3 other iOS developers and a QA team
• Collaborated with product and engineering team members to define and develop new product concepts.
• Managed images using SDWebImage.
• Code housed in GitHub repository.
• Performed application profiling with Instruments.
• Developed application using SCRUM agile methodology, and run the lean startup on application team.

Confidential, Oak Brook, IL

iOS Mobile App Developer

Responsibilities:

• Worked in various design patterns: singleton, proxy, façade, builder, command, etc.
• Participate on team using Agile Scrum, and Git repository.
• Worked with Jenkins continuous integration instance on the private server.
• Implemented the mobile app in Objective C using XCode.
• Used Firebase indexing to improve performance, particularly with finding products in the store.
• Implemented Firebase Push Notifications to notify users waiting for pharmacy, for order status, refill reminders, etc.
• Worked with web development team on integration of web services and search with CMS database.
• Updated location finder functioning with MapKit for iOS.
• Performed database operations like Insert, fetch, update and delete data.
• Used JSON parser to parse fetched data from server to the iOS mobile app.
• Implemented Unit Testing of the iOS mobile app, moved the app to production, and helped get App Store approval, then submitted the app to the App Store.

Environment:iOS, Xcode, Objective-C, MapKit, JSON, REST, Unit Testing, web services, Git, Jenkins, Continuous Integration, Agile Scrum