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Stefan Vitanov

Stefan Vitanov


Bulgaria - Tests: 8 - Portfolio: 5

Have 18 years experience as professional software developer both in desktop and online projects. Most of projects done are C#/.NET/ASPX/MS SQL based, but also some Java(+PHP)/Glassfish/MySQL projects. Previously worked on some Delphi projects. Strong XML/XBRL knowledge as well as all related XML technologies and specifications.

$25.00 /hr
3,135 hours

Naveen Peddi

Naveen Peddi Agency Contractor

Expert .NET | MVC | C# | ASP | JQuery | SQL Server | XML | WCF

India - Tests: 1 - Portfolio: 4

I am working with ASP.net 3.5/4.0/4.5, MVC 3.0/4.0, JQuery Mobile, WCF, Web Services, Entity Framework, LINQ, XML, XSLT, XSD, AJAX, Classic ASP 3.0,JQuery,JavaScript, VB Script, DHTML, XML, SQL Server 2008/2010, ORACLE, Ms-access. I have more than 3 years of experience in this field. Skills: Primary : ASP.NET, VB.NET, MVC, C#, Web services, WCF, Entity Framework, ASP 3.0, VB 6.0, HTML/DHTML Secondary : AJAX, JQuery, XML, XSL JavaScript, MS-SQL/MS Access/Oracle, Crystal Reports

$27.00 /hr
1,049 hours

Gaurav T. Agency Contractor

Expert in .net C# Ajax Sql Server XML HTML Javascript CSS

India - Tests: 7

I am a senior programmer with more than 8+ years in .Net Technologies (C#.Net, Asp.net, VB.NET) and 3+ Years in MVC (knockout.js, angular.js, Kendo UI, Backbone.js etc.) Microsoft Specific Skills • .NET Framework 4.5, 4.0, 3.5, 3.0, and 2.0 • Entity Framework. • C# and VB.NET • Windows Communication Foundation (WCF) • LINQ • Windows Workflow Foundation (WF) • ASP.NET 4.5, 4.0, 3.5 and 2.0 • ASP.NET AJAX • ASP.NET MVC 4.0 • Visual Studio 2012, 2010, 2008 • SQL Server 2008, 2005 • Team Foundation Server • SVN, Microsoft Source Safe Other Skills • XML • UML • JavaScript • Cascading Style Sheets (CSS) • JQuery • Telerik Reporting • DevExpress ASP.NET AJAX Controls • Amazon Marketplace Web Service (MWS)

$15.00 /hr
2,921 hours

Danish Sultan

ASP.NET C# VB JS CSS AJAX jQuery SQL UML XML - Freelance Developer

Pakistan - Tests: 4 - Portfolio: 1

In my 3 years of software development experience, I have worked with the latest technologies. I find interest in both web and desktop application development. These are the technologies I have experience on, C# 2.0, 3.5, 4.0,SQL, SQL Server 2000, 2005, 2008, VB .Net, Crystal Reports, LINQ, Entity, Framework, Javascript, jQuery, CSS

$11.11 /hr
64 hours

Sarika D.

6+Exp in Asp.net(C#,VB),SQL Server,Telerik Rpt,Xml Xsl,Webservice,Ajax

India - Tests: 7 - Portfolio: 6

To work with commitment for client and provide highly efficient software solutions. I have developed various web applications using ASP.NET (2.0/3.5/4/0) with C#/VB.NET as Front end and Sql Server back end over last 6 years. Also I have good working experience in Jquery,XML-Web Service, Ajax, Javascript,Telerik Report, API Integration (Payment Gateway/ Sms Gateway / XML API Integration / Google Map API), Crystal Report, Ajax Control Toolkit, Telerik Rad Control.

$11.11 /hr
133 hours

Bassem A.

Bassem A. Agency Contractor

Software Engineer+ C#, WPF, ASP.NET, SQL SERVER, MySQL, XML, and XHTML

Egypt - Tests: 1 - Portfolio: 9

My core experience is in .NET, C#, Windows Forms, WPF, Silverlight, XML, CSV, XLS, HTML, DHTML, and JavaScript. Also, have long experience in SQL (MS SQL and MySQL). Very hard worker, very communicative and cooperative and problem solver.

Groups: Cheetahs

$8.89 /hr
410 hours

Evgeny S.

Evgeny S.

Senior Software Engineer

Russia - Tests: 4 - Portfolio: 6

I am an independent software engineer with a very broad range of development skills and technologies. I most enjoy working in small innovative teams and with individual decision makers to help grow their ideas into mature and robust software systems based on modern technological foundations. I'm also not a stranger to big software companies, and I can be a reliable team member as well as a small group project architect/leader when needed. I have experience with the following technologies: - C++, Python, JavaScript, C#, Java - Nginx, Gunicorn, Gevent, Flask, Django, jQuery, Node.js, Apache. - MS SQL, DynamoDb, Amazon SDB, MySQL, Redis, NoSQL. - Linux, Amazon EC2, SQS, SNS, S3, RabbitMQ. - Win32 API, HTML5, Android, NDK, GTK, WinForms I'm also eager to extend my experience in cutting edge technologies and programming languages like Golang, Erlang, Nim, Rust, Haskell... I am looking for the opportunity to design and build a system from the ground up for you!

$50.00 /hr
2,533 hours

Oksana Kovalchuk

Oksana Kovalchuk Agency Contractor

Upwork TOP RATED Senior iOS Developer

Ukraine - Tests: 6 - Portfolio: 10

I'm Senior iOS Developer with 5+ years of iOS development and 7 years summary development experience. I have full understanding the process of commercial software engineering, systems development life cycle and reporting importance. Good skills in decision making, leadership, team building and motivating always help me with my team and my customers. Above is detailed information for people who want to know more ;) Summary of qualifications: 
Experience in requirements analysis, effort estimating and task scheduling got a lot of successfully finished projects and released products. I always pay attention to system usability and to source code quality, because I have respect for colleagues who can at any time to continue my initiative.
 I got a lot of experience of work in agile environments and successfully integrate it to all my projects since 2010 and can create full report of project status in a few minutes, I can react on deadline terms in a good time and find a best solution. 
Experienced in a teamwork and in working individually, I’m a team player with good communication and always ready to help or suggest. I have a real passion for creating applications and believe that interfaces should be easy to use and beautiful. Form and function go hand in hand to create great user experiences and I don’t like to think of them as “one another application” and leave it “as-is”. Technical skills: I have an excellent understanding of user experience, usability, visual style and Apple Human Interface Guidelines (HIG). Also I have strong knowledge of Object Oriented Programming, Objective C language, IOS frameworks and frequently used 3rd party libraries. Good knowledge of web-service communication, data formats and algorithms. Most of them: ✓ Fundamentals: iOS Code architecture and design; Multi-threading, CGD; Deep knowledge and great experience in web services architecture integration (JSON, XML, SOAP) and networking (TCP, HTTP/HTTPS, SSL); Profiling tools (time, CoreData, CPU, allocations); ARC and non-ARc memory management; OS Code architecture and design; Mobile project management; Experienced with publishing applications with iTunes Connect, also with in-App purchases. ✓ Core: CocoaPods, git, git submodules; Facebook KVOController; CocoaLumberjack, NSLogger, PonyDebugger; Reactive programming, Reactive cocoa; CoreFoundation; Experience with creating SDK and Frameworks; Creating and integrating static libraries; Parsers (XML, JSON, HTML), TBXML etc; Working with Blocks and BlockKit (long time ago) ✓ Multimedia: huge experience with Audio and Video (effects, recognition, analysis); CoreAudio and MediaPlayer Framework; FMOD Audio Framework ✓ Databases: CoreData; Realm; CoreData (Magical Record) background sync, creating utility; mogenerator (+ extending default templates, scripts); experience with SQLite, FMDB adapter ✓ UI: Very strong UIKit skills; CoreAnimation, Animation sequences, transforms, layers, shapes (including Facebook Pop); CoreText (NSTextStorage, custom attributes, paths); CoreGraphics; Custom UIViewController transitions; AutoLayout (Masonry etc.); AsyncDisplayKit; GPUImage (photo and video filtering, cropping, etc); Creating custom filters; Collection view custom layouts (very custom); Custom fast camera view; Dynamic phone formatters also reworking Google’s shitty libPhoneNumber; UITableView/cell layout customizations from custom insert/reload/remove animations, to dragging between tables, with animations, placeholders Creating custom iOS8 keyboards; Creating custom calendars, fighting with DST, time-zones changes Separate layouts (iPhone/iPad); Gesture recognizers (managing several recognizers including system gestures); NSLocalization and created my own Localize Framework; Experience with creating applications for multiple screen resolutions/sizes, like iPhone 3G ... iPhone 5, also with supporting iPad, including AutoLayout tool and before autolayout was announced. ✓ Networking: TCP, HTTP, HTTPS, SSL; Web service architecture and integration (JSON, XML, SOAP); Image caching (SDWebImage, FastImageCache); NSURLSession and AFNetworking (prefer first one). ✓ AppStore: In-App Purchasing (including subscriptions and Purchases validation (receipts) ✓ Advertisements: iAd; AdMob; AdColony; Tons of other advertisements platforms (including fixes for their poor SDKs). ✓ Analytics: Crashlytics; Google Analytics; Flurry Analytics. ✓ Tools: Paint Code; Reveal App; Creating custom Xcode plugin. ✓ Third-Party APIs and Libraries: Parse; Twitter; Facebook; Linkedin; Yahoo; Google; FourSquare; VK; PayPal; A lot of others. ✓ Location and Maps: CoreLocation; Location Services; Apple/Google/OSM/Yandex Maps ✓ Push and Local Notifications; Created Local Push Notification Manager. ✓ iOS integration: AddressBook SDK; Keychain; E-mail controller, SMS handler.

Groups: Application Developers Alliance

$55.56 /hr
2,010 hours

Robert B.

Robert B. Agency Contractor

Umbraco / Sitecore / ASP.net / Frontend / WPF/ SQL / Real Estate Sites

Russia - Tests: 2 - Portfolio: 21

I have eight years experience in developing web applications using ASP.net, MSSQL, XSLT, Razor, jQuery, AngularJS and also Umbraco/Sitecore CMS websites for big companies and medium businesses. Over last 8 years I've done more than 40 Umbraco and Sitecore sites for customers in USA, Canada, Australia, Sweden, UK, Belgium, Denmark, Norway and Spain. I also have a team of developers who can assist me in any kind of .NET projects. I understand that technical evolution brings more and more stuff from backend to frontend. Therefore I also do frontend development: - Responsive frameworks - Bootstrap, Foundation, SusyPreprocessors - Preprocessors - LESS/SASS - JS frameworks - jQuery, Angular.js, Knockout.js, Backbone.js, Node.js - Any Task runners I have unique experience in creating and making successful real estate sites. Experience in working with large-scaled websites - load balancing and DB, Image, Application server clouds. I also have big experience in creating Windows client apps using WPF. I'm willing to communicate in any suitable time through Skype, GTalk or other preferred IM.

$40.00 /hr
2,768 hours

Gofur H.

Gofur H. Agency Contractor

pro*C/C++, plsql, CSS, PHP, flex, AS3, Oracle, Ajax, OOP, C#, .NET

Czech Republic - Tests: 13 - Portfolio: 5

Over the last 10 years, I have developed a wide range of websites using HMTL,DHTML,CSS, PHP, flex, actionscript including sites for startup companies and small businesses. My core competency lies in complete end-end management of a new website development project, and I am seeking opportunities to build websites from the ground up for you or your business. I also have solid skills in the following areas: MySQL, PostgreSQL, Oracle, Plsql, Interbase Pascal/Delphi, JDK 4,5 and 6JEE 5, c/c++, Pro*c, Web Services SQL, Ajax, OOP, and software design and testing.

$38.89 /hr
1,471 hours