SUMMARY

• 5 application delivered into the app store
• Experience with a wide range of design patterns that include MVC, Delegation, Publisher subscriber, Observer, Blocks and Decorator
• UI customization using XIBs, Storyboards and programmatic statements
• Able to backtrack bugs and issues using BreakPoints, NSlogs, LLDB statements in combination with different tools provided by Instruments
• Experience working with Git using the Xcode interface, the Github application and the terminal
• Implemented applications that make use of the Core Location objects and the MapKit tools to search and present information related to the user’s location
• Able to handle projects using both MRR and ARC for memory administration
• Proficient at implementing data persistence using different technologies such as: User Defaults, Plists, File System, SQLite and Core Data
• REST and SOAP services consumption using URL Session with a combination of reachability to ensure Internet connection.
• Worked with different types of server response that includes XML, JSON and HTML. To process this information, I have made use of the XML parser, NSJSONSerialization class and a combination of different NSString methods to process complex or dirty responses
• Working experience implementing concurrent applications with GCD and NSOperationQueue
• Experience with Test Driven Development with Unit testing using the XCTest framework provided by XCode
• Capable of Building, testing and deploy systematic scales, high available modular software products, and personal instruction by counseling and advising

TECHNICAL SKILLS

• Objective C
• Swift 4
• XCode
• Cocoa Touch Framework
• Apple Human Interface Guidelines
• ARKit
• Singleton
• Delegation
• Notification
• Core Animation
• Core Location
• Webkit
• Agile
• Jira
• Bitbucket
• Git
• Slack
• MVC
• MVVM
• SCNNode
• SceneKit
• DAE
• SCN
• URLSession
• SSL
• JSONSerialization
• Closures
• XIB
• CIImage
• CIFilter
• Apple Push Notifications
• Mapbox
• 3D Touch
• Storyboards
• Autolayout
• Size Classes
• Core Animation
• Test Driven Development
• Continous Integration
• XCTest
• Jenkins

PROFESSIONAL EXPERIENCE

Confidential

SR. IOS LEAD DEVELOPER

Responsibilities:

• This Application is built with Swift 4
• The whole look and feel of the application were customized to meet the client’s guidelines
• Use of storyboards to design the main flow of the application together with Auto Layout Constraints and Size Classes to support multiple screen sizes
• In order to customize the post cards, the application implements dynamically generated views to offer a wide variety of fonts and patterns
• Information about the fonts, image’s names, patterns and customized postcards are stored using Core Data
• Instead of saving the image of the post card, the app saves the information needed to create it again per user’s request
• Communication with the server was approach - using URLSession with JSON parsing using the JSONSerialization class
• Use of the Core Graphic objects to generate the different designs without affecting the performance of the app
• In charge of designing and implementing the communication with the server, parsing the responses into model classes using GCD and delegation
• Implemented the Core Data entities, relationships and wrapper class to administer it properly
• Took part on the customization of the UIControls and the general flow of the app with storyboards and sub-classing
• Use GitHub to administer the different versions of the project: Production, Development and its branches
• Participated in the scrum meetings with the different stakeholders of the project to provide counseling and advice about the technical aspects of the project

Confidential

IOS DEVELOPER

Responsibilities:

• The application makes use of the most popular design patterns: MVC, Delegation, Publisher Subscriber, Blocks and Categories
• The app distinguish itself for having a very cartoonish design, to make this customization off all the controls, it has to be implemented using programmatic statements as well as Storyboards and XIBs
• Use of AutoLayout constraints and size classes to support multiple iPhone Screen Sizes
• Use of background processing with GCD to download the images needed for the coupons
• Use of the CoreLocation objects to get the users location and the location of the establishments that offer discounts in their services
• The MapKit tools were used to set up pins and annotations in the map. These objects were also customized to meet the clients design guidelines
• Consumption of REST services using URL Session with JSON parsing
• The connection with the server is based more in requesting information but the app also sends some information related with the status of the coupons that the user has
• Customization of all the controls in the application included the Map Annotations and the pins
• Web service Communication using REST services with JSON parsing and Unit Testing
• Track and resolved bugs of previous implementations with BreakPoints, NSLogs, LLDB commands
• Profile the time consumption of different tasks using Instruments: Time Profiler
• Memory consumption tracking with Instruments: Memory Allocations, Memory Leaks and Zombies

Confidential

CIOS DEVELOPER

Responsibilities:

• Implementation of Autolayout and Size Classes using Storyboards and Xib’s
• Implemented a custom view to allow the user control certain settings without leaving the application
• Implemented a complex UI containing a set of views to display in an attractive way news header along the weekly climate information by using a combination of UIScrollViews and UIViews
• Traced and fixed several bugs reported by users
• Implemented a UI comprised of a set of UIScrollViews with UIImages inside to showcase several news categories to allow the user to filter the news to display in a graphic manner
• Implemented push notifications to keep the user informed of the latest news
• Developed unit tests using XCTest and TDD practices
• Optimized image resources loading by incorporating NSCache throughout the application
• Team comprised of 4 developers following the Agile methodology

Confidential

IOS DEVELOPER

Responsibilities:

• Worked on enhancements of the app and new features
• Implemented a test drive feature, allowing users to try the application features with mock information, useful for training and demonstration purposes
• Implemented location services through several sections of the application as a security measure
• Developed an analog signature capture screen by implementing a custom UI with touch related responder methods and the CGContext class to draw the retrieved path on the screen
• Participated in the implementation of the card payment procedure using a private library.
• Implemented the transaction summary and detail screens by using custom UITableViewCells on Nib (Xib files)
• Participated in the password reset implementation
• Implemented the internal calculator tool, matching the system calculator UI
• Developed in a team in contact with all the developing life cycle
• Created unit tests for the test drive and signature related classes
• Project was developed with an Agile software development approach

Confidential

IOS DEVELOPER

Responsibilities:

• Worked on the integration of Google Analytics into the application
• Used MapKit along MKAnnotations to display the location of a given POI
• Worked on the implementation of the QR Code scanning. Used AVFoundation and AVCaptureMetadataOutput
• Used Core Data for offline application support
• Worked on the application networking manager to send and receive information. The server used RESTful communication using JSON
• Implemented an UI displaying the available vehicles to rent, along their details. Used custom UITableView cells along the UITableView Delegate and Datasource method implementation
• Worked in the application analytics integration
• Implementation of VoIP support using Pushkit
• In charge of the deployment process to the app store
• Project was developed with an Agile software development approach with 3 weeks sprint
• Worked in a team of 3 iOS Developers, 1 UI Designer, 2 Testers and 1 Product owner
• Optimized the image resource handling. Used NSCache