Orest Khrapko

Orest Khrapko

Warrington, United States
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Orest Khrapko

Orest Khrapko

Warrington, United States
Member since August 27, 2014
Orest is a highly skilled senior developer with extensive development experience in system design, .NET technology stack including C#, ASP.NET, MVC, Web Api, SQL, Entity Framework. He is passionate about JavaScript and related technologies, namely jQuery, AngularJS, KnockoutJs, NodeJS, Express etc. He has built many complex world class products from start to finish making every project he works on a success story.
Orest is now available for hire
Portfolio
  • CardWorks
    C#, JavaScript, MVC, AngularJS, Web API, Java, Provenir Credit Decision Systems
  • ASI
    C#, ASP.NET (WebForms, MVC and Web API), HTML5, REST, Ajax, jQuery, AngularJS...
  • ASI
    C#, ASP.NET WebForms, MVC and Web API, HTML5, REST, Ajax, jQuery, AngularJS...
Experience
  • JavaScript, 15 years
  • SQL, 15 years
  • C#, 10 years
  • ASP.NET, 10 years
  • jQuery, 7 years
  • MVC, 5 years
  • HTML5, 4 years
  • AngularJS, 2 years
Warrington, United States
Availability
Part-time
Preferred Environment
Windows, Visual Studio, Git, TFS, SQL
The most amazing...
...things I've designed and developed are complex SaaS applications.
Employment
  • Sr. Enterprise Architect
    CardWorks
    2014 - PRESENT
    • Analyzed, upgraded, consolidated, and mapped Enterprise applications.
    • Designed and implemented SaaS to support a new line of business in credit card origination. The main modules include credit bureau integration, person identity verification, multiple pricing models support, multiple line assignment models support, account booking, and customer communications.
    Technologies: C#, JavaScript, MVC, AngularJS, Web API, Java, Provenir Credit Decision Systems
  • Senior Enterprise Architect
    ASI
    2012 - 2014
    • Redesigned a supplier’s product update flow that reduced product update propagation to all downstream systems from 24-48 hours to near real time. Flow simplification allowed for retiring around 15 axillary applications. Using a single page design pattern dramatically increased application performance and usability.
    • Architected a new service oriented framework built with latest technologies including MVC, HTML5, ASP.NET Web API, Entity Framework, KnockoutJS, RabbitMQ, and RequireJS. The new framework improved time to market, developer productivity, system performance, reusability, and additional SAAS revenue stream.
    • Designed and architected reviews, recommendations and approval for all changes in the development sprint. Assessed proposed application changes and came up with most optimized method of system/change implementation and reusability.
    • Designed and integrated applications regarding an ASI identity provider using an OAuth2 protocol.
    • Was involved in the setup of a continuous integration server using Jenkins.
    Technologies: C#, ASP.NET (WebForms, MVC and Web API), HTML5, REST, Ajax, jQuery, AngularJS, Knockout, RequireJS, SQL Server, MySQL, MongoDB, ElasticSearch, Endeca
  • Architect
    ASI
    2009 - 2012
    • Architected and designed a proprietary application framework that addressed the user experience, security, performance, flexibility, extensibility, scalability, and content management-related issues needed to support 130,000 users and enable full cross-product integration. The framework improved time-to-market for new products by 40% through re-engineering and unifying security, UI rendering mechanisms, and middle-tier object repositories and utilized a modular approach to development for greater code reusability. Microsoft stack was used: C#, ASP.NET Webforms, SQL Server, JSON.NET, Telerik, and 960 grid system.
    • Integrated Oracle CRM in a single sign-on using SAML and Oracle web services for customer information integration.
    • Oversaw the architecture of migration to distributed version control (Git).
    • Acted as technical lead and architect on an ESP websites project. This product allows distributors to have a fully functioning eCommerce site in a few easy steps.
    • Coded advanced product features.
    Technologies: C#, ASP.NET WebForms, MVC and Web API, HTML5, REST, Ajax, jQuery, AngularJS, Knockout, RequireJS, Entity Framework, Ninject, StructureMap, Log4net, SAML
  • Technical Lead
    Advanta Business Services
    2007 - 2009
    • Worked on infrastructure design and implementation of Advanta’s online originations and underwriting systems using Provenir, Web Services, Interwoven, and ASP.NET.
    • Designed and did end-to-end setup and implementation of Advanta’s underwriting flow using Provenir. This includes: infrastructure setup with MQSeries, TomCat, LDAP, JRE, and more; Provenir software configuration with different adapters and third party hooks like credit bureau integration, address validation services, identity verification services; and integration with other systems in the Enterprise-like web, back office, and servicing platforms.
    • Coded underwriting workflows, scripts, and adapters for Provenir.
    • Designed and developed various web services (SOAP) and websites using ASP.NET, ASP, ColdFusion and Interwoven (Java, XSLT, XSL).
    • Maintained the Interwoven controller layer using Java and Web Services.
    Technologies: C#, VB.NET, ASP.NET, Web Services, Provenir Credit Decision Systems, MSMQ, IBM MQSeries, Java, TomCat, XSLT, XSL, Interwoven
  • Senior Developer
    Advanta Business Services
    2001 - 2007
    • Developed and maintained a web-based customer service interface for a credit decision application using HTML, ASP, XML, JavaScript, AJAX, MSMQ, and MQSeries.
    • Developed various web services and websites using ASP.NET, ASP, and ColdFusion.
    • Worked with a team to convert www.advanta.com to use the Interwoven CMS system.
    • Developed various applications and support utilities using VB.NET 2.0, 1.1, and VB6.
    • Modified, maintained, and upgraded proprietary credit decision systems from Provenir. Created workflows, scripts, and adapters using JavaScript and VBScript.
    • Upgraded applications and systems from Sybase to Oracle.
    Technologies: ASP.NET, ASP, ColdFusion, HTML, XML, JavaScript, AJAX, MSMQ, and MQSeries, Interwoven CMS
  • Software Developer
    Advanta National Bank
    1998 - 2001
    • Developed web applications using Oracle web agent packages.
    • Developed an online banking site for www.advantabankcorp.com using ASP.
    • Developed multiple reports using an SQR reporting tool.
    • Performed Oracle DBA tasks such as backups and software upgrades.
    • Implemented Y2K modifications on existing financial software.
    Technologies: Oracle Web Agent Packages, ASP, SQR Oracle, OSI, VB6
Skills
  • Languages
    HTML5, HTML, CSS, C#, JavaScript, SQL, PHP, VB.NET, Java
  • Frameworks
    Twitter Bootstrap, ASP.NET MVC, Bootstrap, Entity Framework, ASP.NET, AngularJS, Bootstrap 3.0, Knockout.js, JavaScript MVC
  • Libraries/APIs
    Web API, jQuery UI, jQuery, RequireJS, Underscore.js, AMQP(RabbitMQ), Sammy.js
  • Tools
    TFS, MyEclipse, ReSharper, MySQL Workbench, Git, Visual Studio, StructureMap, Jenkins, JIRA, Navicat, Bower, Eclipse
  • Paradigms
    MVC, AJAX (ASP.NET)
  • Platforms
    Windows, LAMP, Linux
  • Storage
    Oracle, HTML5 Web Storage, Membase, Elasticsearch, MySQL, Memcached, Redis, MongoDB
  • Misc
    JSON, Telerik for WinForms
Education
  • Bachelor of Science degree in Computer Science
    Drexel University - Philadelphia
    1998 - 2006
  • Vocational degree in VB Programming, SQL Servers, and Oracle
    CSC Institute - Philadelphia
    1997 - 1998
  • Associate of Engineering degree in Mechanical engineering
    Lutsk State Tech University - Lutsk, Ukraine
    1991 - 1993
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