235  verified 

FreelancersРоман Е.

Just do it!

Ukraine Vinnytsia, Ukraine
3 months 21 days ago
Little busy little busy
age 26 years
registered for 3 years

  • javascript
  • java
  • Android
  • node.js
  • regexp
  • angularjs
  • ExpressJS
  • socket.io
  • rest api
  • Angular 2
  • orientdb
Роман Ефимчук


Web programming
2761 place out of 16202
Website development
2082 place out of 8879
Position in global rating 120
  24089 place out of 450668

Verified details

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Roman Yefimchuk


Date of birthday







[email protected]


Expected position:

Web developer, Backend developer, FrontEnd developer





Summary of experience:

4 years in IT:

  • Strong experience in development of Web and Mobile (Android) applications
  • Deep knowledge in ASP.NET, C#, Java, JavaScript, Android, HTML/5, CSS, MSSQL, MongoDB, OrientDB etc
  • Solid background in Object Oriented Programming and Software Development
  • Experience in development and implementing applications with standard UI components, creating custom UI components, connecting applications to Back End services
  • Good understanding of REST based services and service based architecture
  • Experience in Database design and analysis



.Net, C#, ASP.NET MVC, Java, JavaScript, TypeScript, ECMAScript 6, SQL, HTML/5, jQuery, AJAX, Backbone.js, Angular.js, Node.js, Bootstrap, MSSQL, MongoDB, OrientDB, MS Visual Studio 2008, 2010, 2013, WebStorm, TFS, Jira, IIS 6.0, 7.0, 7.5, Apache, SVN, GIT, Regular Expression, IndexedDB

Work experience:


March 2016 — till present


Software Engineer


  • Development of the free community platform that combines all the tools to build, manage and participate in your communities.

           Environment and Tools: JavaScript (jQuery, Angular.js), TypeScript, HTML, CSS, SASS, Regular                  Expression, Microsoft TFS, IIS


  • The major goal of the project is to develop a system of the codebase associated with the modules to support run under IE11, implement Masthead and upgrade color scheme. Environment and Tools: JavaScript (jQuery), HTML, CSS, GIT



March 2013 — March 2016


Software Engineer


  • Development of system for arranging registration reception for hospitals including managing orders

           Environment and Tools: C#, Asp.Net, Entity Framework, HTML5, JavaScript, Angular.js jQuery,                  OAuth, Twitter Bootstrap, SignalR, OWin


  • Development for payment system. Manager of users credit cards, payment invoices and history. Using Stripe engine for storage cards info and making charge and transfer

           Environment and Tools: Node.js, Express.js, OrientDB, HTML5, JavaScript, Angular.js, jQuery,                    OAuth, Socket.IO, Twitter Bootstrap


  • Automation of taxi service system: mobile applications with server side to reserve a car at anytime. Manage trips in real-time and orders history

          Environment and Tools: Android, Gradle, JavaSE, Servlets, Tomcat, HTML5, JavaScript,                             Backbone.js, jQuery


  • Development for enterprise Mobile Solutions Platform that provides real-time reporting from the field and task management via cellular mobile phones and tablets. Highly flexible, thus allowing, organizations from any industry and size, to easily customize reports, as well as comprehensive data collection and compilation

           Environment and Tools: Java, Jersey, JBoss, HTML5, JavaScript, jQuery, Underscore.js, Angular.js,              Twitter Bootstrap


  • Development for mobile application of managing electronic business cards and events. Scanning from QR codes, receiving via NFC or bluetooth

           Environment and Tools: Android, Java, PhoneGap


Vinnytsia National Technical University

2014 – 2015

Specialist's Degree in Artificial Intelligence Systems

Vinnytsia National Technical University

2010 – 2014

Bachelor's Degree in Artificial Intelligence Systems




  Recent proposals 1
Функционал сайта на Javascript или Angular