John R. Kosinski

John R. Kosinski

Chiang Mai, Thailand
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John R. Kosinski

John R. Kosinski

Chiang Mai, Thailand
Member since October 28, 2015
As a full-stack mobile developer, John has been developing since around 2000. Early on he did some C++, ASP, VB6, and other things; since .NET came out most of his work has been in .NET. His work experience up until 2009 was in the NYC and NYC area; since 2009 he's been living and working in Thailand. Currently he's consulting remotely for US clients, and working on iOS and Android projects.
John is now available for hire
Portfolio
  • Door3/FreshDirect
    Xamarin IOS, Objective C IOS, Java Android, Xamarin Android, .NET, Selendroid...
  • Manao Software
    .NET, REST Services, JSON, MVVM, KnockoutJS, jQuery, SoapUI, TDD, Scrum...
  • HotelTravel.com
    .NET, C++, JavaScript, SQL Server, PHP, VB.NET, ISAPI, Android
Experience
  • JavaScript, 16 years
  • C#, 16 years
  • Agile Software Development, 8 years
  • Scrum, 5 years
  • REST, 4 years
  • SQL Server, 16 years
  • Xamarin, 2 years
  • Android, 2 years
Chiang Mai, Thailand
Availability
Part-time
Preferred Environment
Depends on the type of project; I'm flexible.
The most amazing...
...thing about victory is, it's 99% achieved in the preparation and only 1% in the fighting.
Employment
  • Mobile Developer (Remote)
    Door3/FreshDirect
    2014 - PRESENT
    • Developed a Webby-winning e-commerce iPad application using Xamarin iOS.
    • Added new features on a legacy Objective C app.
    • Added new features on a legacy Android app.
    • Consolidated legacy apps into new Xamarin unified platform.
    Technologies: Xamarin IOS, Objective C IOS, Java Android, Xamarin Android, .NET, Selendroid, Jira, Scrum
  • Senior Developer/Team Leader
    Manao Software
    2012 - 2014
    • Managed team of developers to produce a REST/JSON front-end to a unique SAP-querying interface.
    • Designed architecture for above software, .NET WebApi MVVM with NHibernate.
    • Managed team to develop above software in .NET.
    • Directed QA unit-testing using Soap-UI.
    Technologies: .NET, REST Services, JSON, MVVM, KnockoutJS, jQuery, SoapUI, TDD, Scrum, Jira, Perforce, DDD
  • Software Development Manager
    HotelTravel.com
    2009 - 2012
    • Redesigned the rate providers pulling subsystem.
    • Developed ISAPI filters for the website.
    • Developed prototype mobile/web app.
    • Managed day to day process of developed and quality control.
    • Managed team of 16-20 developers.
    Technologies: .NET, C++, JavaScript, SQL Server, PHP, VB.NET, ISAPI, Android
  • Senior Developer
    Morgan Stanley (NYC)
    2007 - 2009
    • Performed application and web service programming in C# and VB.NET.
    • Interfaced .NET software with legacy COBOL programs.
    • Developed GUI Design/Programming in ASP.NET and JavaScript.
    • Developed software to manage fixed income securities based on currency exchange models.
    • Designed service-based architecture linking .NET applications to core mainframe services.
    Technologies: .NET, C#, VB.NET, JavaScript, Cobol, SOAP web services
  • Senior Software Architect
    Braveline Technology (NYC)
    2003 - 2007
    • Developed an internal image server that's still in use and well-regarded.
    • Wrote ab e- commerce object-oriented redesign.
    • Developed Internal component library (parts of which are still in use).
    • Serviced clients in various industries including private equity, financial services, entertainment, and accounting.
    Technologies: C#, VB.NET, C++, VB6, SOA
  • Junior Instructor
    SetFocus LLC (NYC area)
    2001 - 2003
    • Researched topics to present to students.
    • Assisted the senior instructor in preparing course material.
    • Delivered and and helped to deliver course material to students.
    • Assessed and graded students' work.
    • MCT certified.
    Technologies: .NET, SQL Server, COM
Skills
  • Languages
    JavaScript, C++, C#, C, Assembly, Java, Objective-C, Perl, XML, HTML5, XPath, PHP, COBOL
  • Frameworks
    .NET, ASP, Sencha Touch, Knockout.js, ASP.NET
  • Libraries/APIs
    RESTful APIs, jQuery, Node.js
  • Tools
    Android Studio, Visual Studio, JIRA, Xcode, SoapUI
  • Paradigms
    REST, MVVM, Agile Software Development, Scrum, Kanban, Design Patterns, MVC
  • Storage
    SQL Server, MySQL, MongoDB, NoSQL
  • Misc
    JSON, Finance, Web, HTTP, Trading, eCommerce, Xamarin.forms, SOAP, Shell Scripting
  • Platforms
    Android, Xamarin, iOS
Education
  • Bachelor's of Science degree in Computer Science
    University of Delaware - Newark, Delaware USA
    1993 - 1998
  • PFC USMC degree in Basic Military Skills
    Parris Island Marine Corps Recruit Depot (MCRD) - Parris Island, South Carolina USA
    1996 - 1996
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