OVERVIEW:

• Professional with over 7 years of experience on the IT field developing software. 5 years of experience developing native iOS applications, started with Objective - C (3.5 years) and more recently Swift (2 years).
• Proficiency working with Design patterns, including the MVC, MVVM architectural patterns and the Observer, Builder, Adapter, Decorator structural, creational and behavioural patterns.
• Expertise on consuming RESTful and SOAP based Web Services using an HTTPS secure connection.
• Experience migrating applications from Objective-C to Swift. Additionally, upgrading between Swift versions.
• Proficiency working with GCD, NSOperation and NSOperationQueue for multithreading and concurrency programming.
• Expertise in microcontroller programming for automation and control.
• Proficiency working with 3rd party libraries and CocoaPods such as AFNetworking, Alamofire, SwiftyJSON.
• Working experience with Core Data and SQLite.
• Proficiency on UI design and implementation using Nibs, programmatically and with Storyboards.
• Experience with MRR and ARC memory management, profiling, debugging and fixing memory leaks.
• Experience working with Core Location, MapKit and Google Maps for implementing features that require map and navigation integration.
• Expertise working with Version Control Systems, specifically GIT and Subversion.
• Proficiency working under Agile methodologies, specifically SCRUM.

TECHNICAL SKILLS:

• Professional
• Concurrency
• Microcontrollers
• Web Services
• XCode
• Design Patterns
• SCRUM
• Java
• Swift
• Objective-C
• C
• Python
• SQL
• Hibernate
• NodeJS
• Languages
• Spanish
• English
• Personal
• Team Work
• Organization
• Communication
• Persistence

PROFESSIONAL EXPERIENCE:

Sr. iOS Developer

Confidential, Philadelphia, PA.

Responsibilities:

• Used Core Location along MapKit and custom MKAnnotations to display the nearby XFINITY wifi network locations to the user.
• Implemented a custom view displaying the navigation route preview to a selected location along its general details.
• Implemented Core Data handling code to store and the user favorite wifi locations.
• Implemented WiFi location sharing functionality using a UIActivityViewController and a UIPopoverPresentationController for iPad.
• Integrated Google Analytics to track application usage.
• Implemented a custom search bar to search for locations based on a Zip code or a city name.
• Collaborated on the Connection Profiles setup for the hotspot auto connect feature.
• Mentored Junior iOS developers on Design Patterns, best practices, unit testing, and advanced topics on the iOS framework.
• Developed a table displaying the nearby locations along their basic details with a custom UITableViewCell.
• Generated a mock data information generation class to facilitate the Unit Tests.
• Used Git for source control and peer reviewed Jr. developers pull requests before merging.

Sr. iOS Developer

Confidential, Dallas, TX

Responsibilities:

• Implemented an attractive UI displaying the devices on the network. Used a UITableView implementation along with custom UITableViewCells.
• Developed the account sign in authentication.
• Developed the account sign up web service communication.
• Incorporated custom icons, colors and font on several sections of the application.
• Peer reviewed code from Jr. iOS developers and mentored them on the best practices, O notation of their solutions and on the advanced topics of the platform.
• Using the XCode instruments tool made a performance analysis and identified several performance bottlenecks on the application. Additionally, collaborated with the team to improve the performance on the affected sections of the code.
• Traced, identified and refactored code in order to fix memory leaks on development and release candidate versions of the code.
• Implemented a custom activity indicator, a spinning blue semicircle.
• Designed and implemented unit tests for several core features of the application.
• Used GIT under the branching model and using a private repository for the version control of the source.
• Implemented networking communication with the router using a proprietary library.
• Team comprised of 6 members.
• Developed under the Test Driven Development approach.

iOS Developer

Confidential, Irvine, CA

Responsibilities:

• Worked on the Apple Push Notification support feature on the application to keep the user informed with the latest news on the pop culture.
• Implemented a UIScrollview with paging mode to showcase the basic application usage on the first launch of the application. The first usage of the application required storing a key on the NSUserDefaults.
• Made use of the AVFoundation AVPlayer for playing news videos throughout the application.
• Implemented custom UITableView and UITableViewCells for handling different type of news, the ones that are based on video and the ones with images and text.
• Incorporated the usage of a UIWebView to show additional resources from the website.
• Used an UIActivityViewController to allow the user share the link of a specific news either via email, social media and more.
• Worked on the implementation of feature allowing the user to swipe back and forth between news in order to have an efficient continuous navigation between news, it required working a UIScrollView and pagination.
• Worked on the implementation of a hamburger menu using two overlapping UIViews on the root UIView in which one of them was a UITableView and gestures to allow the user filter the news by type, for example entertainment, red carpet and events.
• Added Ad support to the application using Google’s Mobile Ads SDK.
• Added Analytics to the application using Google Analytics.
• Implemented a settings screen to allow the user see the privacy policy, the EULA and the terms of service of the application.
• The application was developed in a team of 2 IOS developers one local, one offshore.
• The project was developed in a lightweight variation of SCRUM.

iOS Developer

Confidential, San Francisco, CA

Responsibilities:

• Worked on the networking layer of the application. By the means of encrypted communications, retrieved data for the RESTFul web service such as the available user files given a folder reference and an endpoint which would be given a reference folder and a specific classification for the media type such as images, text, archives, videos.
• Stored on the filesystem the most recent used files by the means of replacing old files with the last recently used one in order for it to work like a temporal cache.
• Made use of the NSUserDefaults to store the user settings.
• Wrote Unit Tests for the developed features and for some other features that had been pending for being Unit Tested.
• Implemented a custom view to allow the user select in an interactive manner how much should their files be compressed before being uploaded on the settings screen.
• Detected and fixed memory leaks using the Instruments tool on XCode.
• Designed and implemented the about screen which contains a UITableView, an UIImage and several UITextView.
• The team was comprised of 2 iOS developers, 2 QA and 2 backend developers working collaboratively on the project.
• The working environment was Agile based on a custom approach to SCRUM.

Web Developer - Full stack

Confidential

Responsibilities:

• Configured an Apache web server to handle the load between two tomcat servers
• Deploy the war file on both tomcat servers and modify the dependencies pointing to previous server and directories
• For the batch app we modified configuration files in /etc directory so that:
• Handle SFTP files from our partner applications
• Our internal scheduler could login with the application account and run the .sh batch

Web Developer

Confidential

Responsibilities:

• The app was developed using Java Servlets as web services.
• At first instance we were planning to deploy in a hellion web server and had to package the code in a container with Jetty.
• Helion got decommissioned and collaborated on the migration to a tomcat web server. Configured the DB connection and server settings.
• For the logging worked on the validation of the credentials using LDAP and verification that the user got approved access in the DB.
• Implemented the DAO mapping, by using hibernate with annotations (JPA).
• Coded the unit testing with Mockito, refactored the application code so that it could support mock ups.

Internship

Confidential

Responsibilities:

• Implemented a custom library to read the excel file with the test cases to follow
• Use selenium driver to perform testing in IE, Firefox and Chrome
• At the end of the project we implemented this as our integration test and were able to reduce it from 3 hours to 5 minutes.
• The next steps where to implement it using cucumber and beautiful language so that the business could develop their tests.