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Pablo Ariel Schulklapper, Objective-C Developer in Colonia del Sacramento, Colonia Department, Uruguay
Pablo Ariel Schulklapper

Objective-C Developer in Colonia del Sacramento, Colonia Department, Uruguay

Member since February 5, 2016
Pablo is a senior iOS developer with over eight years of experience building apps for remote clients. He takes pride in his work and focuses on delivering high-quality products. A notable iOS app that he's developed is the PDF Reader Pro Edition which is also frequently highly-ranked in the App Store.
Pablo is now available for hire



  • iOS, 8 years
  • Xcode, 8 years
  • Objective-C, 8 years
  • Java, 5 years
  • Git, 4 years
  • Swift, 3 years
  • Android, 2 years
Colonia del Sacramento, Colonia Department, Uruguay



Preferred Environment

macOS, Xcode, Git

The most amazing...

...feature I've developed is a computer vision algorithm to whiten teeth in a photo automatically, without entering any facial feature location.


  • iOS Developer

    2010 - PRESENT
    iTech Development Systems (Remote client from the US)
    • Developed the iOS app PDF Reader Pro Edition.
    • Implemented new features, enhanced the performance, and fixed bugs.
    • Built a RESTful Java EE back-end server to coordinate online activities between users.
    • Constructed a new user interface.
    • Added in-app purchases.
    • Provided technical feedback about the iOS platform possibilities and limitations.
    Technologies: iOS, Swift, Objective-C, Xcode, REST, Java EE, MySQL
  • iOS Developer

    2016 - 2017
    Round Pegs (via Toptal)
    • Built the iOS app Sara, for DASA Brazil (the largest diagnostic medicine company in Latin America). The app's purpose was to allow patients to manage their medical exams.
    • Developed the app using Swift.
    • Implemented code to consume REST APIs from the back-end.
    • Used the Google Maps SDK to show the closest laboratories to the patient.
    • Added Firebase push notifications.
    Technologies: Swift, Xcode, CocoaPods, Google Maps SDK, Core Location, Firebase Push Notifications, REST, JSON
  • Java EE Developer

    2005 - 2007
    Idea Factory Software (Argentina)
    • Developed a Java EE web app to be used by the Argentina government. The team consisted of a project manager and seven programmers.
    • Implemented the front-end with JSP and the back-end with Hibernate.
    • Designed business reports with JasperReports.
    • Created generic, reusable components to be used in other projects of the company.
    • Helped other developers with bugs and programming problems.
    Technologies: Java EE, Eclipse, Tomcat, Hibernate, Oracle Database, JSP, JasperReports


  • PDF Reader Pro Edition (Development)

    A popular iOS app to read and annotate PDF files.

    This app is usually ranked in the top 20 in the Business category for iPad of the US App Store (please open the link on an iPad to see this ranking).

    I developed most of the app and I've been working continuously on this project since 2010. Features that I've added include highlight and annotation support, text search, and integrations with iCloud, Dropbox, and Google Drive.


  • Languages

    C++, C, CSS, XML, HTML, SQL, Java, Swift, Objective-C, Python
  • Frameworks

    UIkit, MapKit, Android SDK, iOS SDK, JavaServer Pages (JSP), GameKit, Core Location, Core Data, Hibernate, Django
  • Libraries/APIs

    iOS Extensions, Google Maps SDK, Alamofire, Box API, JasperReports, CocoaPods, Flurry, Dropbox API, Shopify API
  • Tools

    Asana, Google Analytics, Subversion (SVN), Git, Sketch, Slack, Apache Tomcat, Android Studio, Eclipse IDE, Xcode, Adobe Photoshop, PyCharm, Apache
  • Paradigms

    REST, Object-oriented Programming (OOP), Test-driven Development (TDD), Agile Software Development
  • Platforms

    Firebase, JBoss, Java EE, Android, iOS, Oracle Database, Linux
  • Storage

    JSON, Microsoft SQL Server, MySQL, SQLite, PostgreSQL
  • Other

    Push Notifications, In-app Purchases, GlassFish


  • Bachelor's degree in Information Systems Engineering
    2002 - 2008
    Universidad Tecnológica Nacional - Buenos Aires, Argentina
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