SUMMARY

• 7+ years of experience in iOS application development using Xcode and Cocoa Touch framework
• 7 iOS mobile apps published.
• Combine iOS and software development experience spans 10+ years.
• Worked with the aspects of iOS application flow using Storyboards, XIBs, and programmatic UIs.
• Proficient including designing for all types of screen sizes and orientations (iPhone and iPad).
• Comfortable with AutoLayout, Size Classes, and programmatic implementations
• Understanding of MVC and MVVM architectures
• Well versed with OOP Programming languages; Objective C, Swift 3 and Swift 4, and Swift 5
• Object - Oriented Programming expertise; key principles of polymorphism, inheritance, data abstraction, and data encapsulation
• Adept at implementing multiple OOP design patterns including the following: Singleton, Delegate, Factory, KVO, KVC.
• Skilled in converting JSON to objects with Decodable and JSONSerialization
• Consumption of webservices done with native URLSession as well as with third party frameworks such as AlamoFire
• Experience with Git for version control with BitBucket and GitHub
• Memory and Data Management experience in both Manual Retain Release and Automatic Reference Counting; aware of retain counts, memory leaks, and how to handle them
• Excellent written and oral communication skills
• Experience in AGILE/SCRUM methodology, and familiar with Waterfall
• Experience with iOS performance profiling tools like Allocations
• Comfortable working in any team size.
• Efficiently consumed and managed RESTful and SOAP web services with XML and JSON formats.
• Skilled in asynchronous http and https requests using a variety of tools such as NSURLSession, and AFNetworking.

TECHNICAL SKILLS

iOS Technologies: CoreLocation, AVFoundation, MapKit, Cocoapods, SocialFramework, CoreGraphics, UIKit, Foundation, GCD, Operations, PLists, UserDefaults, Keychain, Categories, Interface Builder, XIB’s, Storyboard, Push Notifications, JSONSerialization, NSXMLParser, UIGestureRecognizers, CoreData

Web Technologies: RESTful Web Services, SOAP Web Services, JSON, XML, HTML5

Code & Project Management Tools: Xcode, JIRA, Git, Command Line, SourceTree

Other Tools: Swift, Objective-CFabric, Crashlytics, Splunk, CocoaPods, Carthage, Jenkins

PROFESSIONAL EXPERIENCE

Senior iOS App Developer

Confidential, McLean, VA

Responsibilities:

• Working on a team consisting of 5 iOS and 5 Android Developers, 1 Product Manager, 1 Team Lead, and 1 Scrum Master.
• Applying Agile project methodology with 2 weeks per Sprint. Daily standups every morning. Once a week a 1-hour technical meeting during which the iOS team all technical issues. Also, a once-a-week meeting with all Travel teams (API, Product, Designer, Dev) to discuss each team's updates.
• Working directly with Confidential ’s QA team on build and release/testing sessions to make sure the new build works well.
• Building the app on an internal framework developed by Confidential ’s solution architecture team. The architecture of this framework is 80% the same as Redux plugin architecture.
• Coding in Swift 5 using Xcode 12.3.
• Collaborating with multiple teams from UI/UX, product team, API team, QA team and contributing ideas for changing the business logic or design to make the app more use friendly and easy to use.
• Using Charles Proxy to trace API.
• Utilizing SourceTree for source control and resolving merge conflicts.
• Using UIKit to build the UI for the screens with both storyboards and programmatically.
• Applying accessibility to help people with low vision see the app smoothly with VoiceOver.
• Working on analytic tags to help keep track of user behavior.
• Testing features on regression and reporting bugs.
• Connecting the UI with API response to help the feature displaying data dynamically from server side.
• Writing UI tests to make sure the apps behave properly.
• Using Figma for the UI design and collaborating with UI design team to improve the UI/UX for the feature.
• Conducting code reviews whenever teammates open their PRs and refactoring the codebase.
• Data binding with RxSwift (at the beginning joining the project, and then CapitalOne changed to Combine for data binding).
• Writing Unit Tests using XCTest library sure functions work properly.
• Using JIRA to create tickets and track tickets.
• Verifying and debugging the feature and functionalities using NSLog statements, breakpoints, and LLDB statements, and collaborating with QA team about bugs.
• Synchronizing with Android devs in the team to make sure the features work consistency on every scenario in both platforms.
• Fixing the UI on iPad devices in Portrait and Landscape views.
• Peer reviewing code to help maintain the codebase quality.
• Using Postman to test APIs and validate contracts with backend teams.

Senior iOS Developer

Confidential, Richfield, MN

Responsibilities:

• Custom iOS UI was designed and developed using XIB files with use of wireframes from UX team.
• AVFoundation was used to handle barcode and QR code scanning for products with the iOS app.
• Invoked RESTful web service calls using URLConnection and GCD to pull information from web services. regarding food products, their alternatives and other information.
• Implemented features in Swift using Xcode IDE with XCTest for writing Unit Tests and Test Fairy for functional testing.
• Reworked the user settings page, using AutoLayout and UserDefaults
• iOS backend communications parsed with JSONSerialization and placed into model objects.
• Design custom MapAnnotation. Handling delegates: didSelectAnnotationView, viewForAnnotation.
• Used RESTKit library to make connections to server, and handle iOS app authentication challenges.
• Core Data was used to store the user’s preferences and favorited products using the iOS app.
• Enhanced and optimized map functionality using MapKit, CoreLocation, and MKAnnotations.
• Codebase stored in SVN repository with Jenkins for continuous integration testing.
• Project managed using Agile methodology.
• Designed all views with auto layout and constraints.
• Implemented many OOP and patterns like MVC, KVO and Singleton.
• Implemented new menu design and functionality for an improved user experience.
• Implementing sitecatalyst to track all behaviors of user.

iOS Mobile Developer

Confidential, Denver, CO

Responsibilities:

• Verify and debugged feature/functionality implementations and enhancements in the application using a combination of NSLog statements, Breakpoints, and LLDB statements as per QA Teams feedback.
• Developed UI elements programmatically and through XIBs as per design documentation.
• Navigated between UIViewControllers using both modal presentations and push/poping UIViewControllers onto the navigation stack with UINavigationControllers.
• Involved in the process of applying localization to the application.
• Codebase stored in Git repository using Jenkins Continuous Integration.
• Worked with Objective-c and Swift hybrid code bases; practical experience working with bridging header files and minor issues with a dual language code base.
• Transitioned legacy code from Objective-C to Swift.
• Core Data utilized to persist and retrieve users’ info
• Core Data was used to store the users progress
• Developed using Xcode 9. Design Core Data structure.
• Offered several design elements that added great value to the application and improved the UX.
• Designed and developed custom alert views and custom TabBar.
• Used UIViewControllers, UITableViewControllers, custom ITableViewCell with Interface Builder to design and develop user interface.
• UI and Application design with NIB files programmatically and using Interface Builder.
• All code for the mobile and server applications were written using strict object-oriented design techniques.
• Refactored execution management of orders to be handled in the background without locking up the main thread and UI using GCD; NSOperations also leveraged for more complicated concurrency concerns

iOS Developer

Confidential, Silver Spring, MD

Responsibilities:

• Worked in Xcode IDE with coding in Swift and used AVFoundation was used to handle audio play back and video streaming.
• Utilized NSOperations for downloading images on background thread so as to not lock up the UI and provide a better user experience
• Used NSCache to enable caching workflow for images to reduce loading time from the initial launch of app onwards
• Parsed JSON responses into useable NSObjects using NSJSONSerialization feature.
• Sent push notifications to Apple Push Notification Service (APNS).
• Regularly performed code reviews to ensure efficiency, readability, and maintainability.
• Participated in review meetings and took the initiative to meet the QA testing targets.
• Profiled the application extensively using Instruments to improve performance throughout multiple sprints.
• Designed and implemented native iOS solutions that utilize REST web services for integration with back end processes.
• Developed dynamic configuration to switch between web service calls.
• Managed GitHub repository creating branches doing merge, pull request and releases.
• Worked in an Agile Scrum development environment with the iOS team and participated in daily scrums and Sprint meetings.
• Worked with Product Owner to prioritize tasks and feature development.
• Provided prototypes and demonstrations to make sure the iOS team was developing like they wanted.
• Analysis of requirements to identify the set of possible use cases for the new product design.
• Analyzed and optimized the UI and the backend interface code for efficiency and performance.
• Analyzed existing code for improvements and optimizations.
• Analyzed the production defects and fixed them in time for each release.

iOS Developer

Confidential

Responsibilities:

• Verify and debugged feature/functionality implementations.
• Worked in Objective-C and Swift using Xcode IDE.
• Backend communications parsed with NSJSONSerialization and placed into model objects.
• Created custom pList by calling web services through JSON libraries and connecting to Core Data with the objective C interfaces.
• Code housed in Git repository and used SourceTree to manage merges and commits.
• Worked in a Test-Driven Development (TDD) environment and participated in code reviews and worked with peers to ensure coding best practices.
• Created notifications to detect the autorotation in the customized sub views working with Apple Push Notifications (APNS).
• Created test cases to streamline and optimize code with XCTest and created test data for unit test and requirement validation.
• Created test transactions and rans tests; revising as necessary.
• Development environment used a 2-week Sprint release cycle and followed Agile Scrum practices.

iOS Developer

Confidential, Chicago, IL

Responsibilities:

• Responsible for profiling the iOS mobile app using Instruments and for debugging features and functionality.
• Worked with QA testers to make sure all issues a they found were corrected and all improvements to performance and user experience (UX) were completed.
• Documented Code Snippets, Reference applications, SDK and API level changes, Comparison documents for each new version of iOS.
• Effectively used Storyboards, instruments, and organizer tools in Xcode, coding in Objective-C and refactoring code to Swift using bridging headers.
• Employed TDD which includes the Unit test cases for each class to increase the App quality.
• Encapsulated AFNetworking and REST API as an abstraction layer to manage HTTP request.
• Identified and fixed any bugs reported during testing phase of the project.
• Used Core Data for persistent storage of user data.
• Wrote Unit Testing in XCTest and moved to production.
• Implemented various OOP practices including KVO, and Singleton architectures.
• implementing the software, debugging, fixing and maintaining the software.
• Imported and integrated 3rd party libraries through CocoaPods tool instead of traditional referencing.