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C# (C Sharp) is a multi-paradigm programming language encompassing many different programming disciplines. It was developed by Microsoft within the .NET initiative.

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Upwork C# Jobs Completed Quarterly

On average, 681 C# projects are completed every quarter on Upwork.

681

Time to Complete Upwork C# Jobs

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Average C# Freelancer Feedback Score

C# Upwork freelancers typically receive a client rating of 4.68.

4.68
Last updated: May 1, 2015
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  1. Jay Good

    Jay Good Agency Contractor

    Sr. Web Developer and DBA

    United States - Last active: 11/30/2014 - Tests: 3 - Portfolio: 21

    I have been developing software and working with databases for the past 16 years. I design object-oriented, tiered applications and write code in PHP, C#, and VB.NET. I have also written applications in C++ / MFC / Win32 as well as VB 6.0. I design and administer databases in MySQL and Postgres and excel at writing triggers, functions/procedures, and views. I have also worked with SQL Server and Oracle. Over the past couple of years, I have moved into being a PHP developer with a preference for the CakePHP 2+ framework (though I also know Zend 2+). I truly believe that PHP, HTML5, and CSS3 are the future of the software world. Since PHP was specifically designed for creating web pages, it only makes sense to use it for web development, especially now that object-oriented features and other modern functionality have been added to the code base. I hold a computer science degree (1998) and have several years of practical experience. I have been using the .NET Framework since the Visual Studio .NET Beta and write .NET code primarily in C# and VB.NET. I prefer to work with applications that follow an n-Tier architecture along with object-oriented concepts such as inheritance and abstraction but will work with just about anything. I have vast experience using C++ and the Microsoft Foundation Classes along with the Win32 API. Other languages/frameworks include PHP, LINQ, Regular Expressions, VB 6.0, and straight C. I have been designing and administering SQL databases since SQL Server 7.0. Software Engineers tend to be bad DBAs but I believe that I am the exception. Database concepts such as normalization/denormalization, primary/foreign keys, and check/default contraints are not new to me. Whether it be T-SQL or PL/SQL, I also excel with database programmability, such as triggers, procedures, functions, and views. File organization and usage, backup and maintenance, and database efficiency are also strengths. I currently primarily use PostgreSQL 9+, where available and MySQL 5+ where it is not. Other databases include SQLite, Oracle, and yes, Access (95 on up). During the past 16 years, I have created and maintained custom line-of-business Windows applications, with a focus now more on Web applications. These have included applications for law enforcement, 911 centers, jails, retail businesses, nursing homes, trucking companies, charities, talent brokers, community/group sites, and e-commerce. I have also designed and coded applications for GIS mapping systems and some data mining and sharing initiatives. I have created custom TCP/UDP servers and clients for low-bandwidth mobile applications. I have worked with O/R mappers such as LLBLGen Pro and are used to using entities in data layers rather than reading/writing data directly. Where applicable, I prefer to use the MVC (model-view-controller) mantra, where manipulating, presenting, and controlling the data is abstracted out. I am used to using source control systems such as Git, SVN, Vault, and SourceSafe. I excel at Web Applications, Windows Forms applications, Windows Services, records management applications, interfaces with third-party APIs, integration of systems, and middle tiers such as the business or data layer (just in case you already have a web application but need the back-end to work). Preferences/Specialize in: Web Applications Records Management/Business Applications Database Design/Administration Windows Services Back-end Work (business, data layer, facade) Windows Forms Applications API Programming Integration of Systems Data Mining/Conversion Programming Languages: PHP 4/5 C# VB.NET C / C++ Java VB 6.0 Databases and Languages: MySQL PostgreSQL SQLite SQL Server T-SQL Oracle Database PL/SQL Access DataFlex AcuODBC Libraries/Frameworks: .NET LINQ LINQ to SQL LINQ to XML Regular Expressions WPF MFC Win32 API ADO.NET ADO DAO/Jet Concepts: Object-Oriented Programming n-Tier Architecture Service-Oriented Architecture Normalization/De-normalization Primary/Foreign/Unique Keys Check/Default Constraints Database Programmability Tools: Visual Studio SQL Management Studio Eclipse PhpStorm LLBLGen Pro VMWare Microsoft Office (Word, Excel, PowerPoint, Outlook) TextMate DbVisualizer Active Reports Crystal Reports Iron Speed CodeOnTime Source Control: Git SVN SourceSafe SourceGear Vault Web Programming: CakePHP 2 & 3 Zend 2+ Silverlight HTML, HTML5 CSS, CSS3 JavaScript WCF SOAP REST JSON XML XSD Web Browsers: FireFox Chrome Internet Explorer Safari Operating Systems: Windows Mac OS X

    Associated with: Good Software Partners

    $35.00 /hr
    1,089 hours
    4.97
  2. Shumais Ul Haq

    Shumais Ul Haq Agency Contractor

    Senior iOS (iPhone and iPad) / OS X / Server backend developer

    Pakistan - Last active: 11/25/2014 - Tests: 4 - Portfolio: 10

    Over the last couple of years I have worked extensively with iOS applications with/without backend servers and I also have experience with Java and PHP. I have extensive experience, with the iOS SDK, I have been developing apps for the iPhone and the iPad over almost 4 years. My core competency lies in developing Mobile Apps for the iPhone/iPad and server side programming with PHP/Java. I am seeking opportunities to architect and build Mobile Apps with or without web interfaces/server side programming. I have worked with the following technologies & platforms: - iOS Applications - Mac Applications - iOS Development for Jailbreak devices - Android SDK - Server Side Development (Java, .net, xml, json, windows service, apns push, c2dm push) -PHP - J2ME - Web Development (Spring, Javascript, jquery, dojo, google maps)

    Associated with: Zumba

    $19.44 /hr
    493 hours
    4.91
  3. Aaron Whigham

    Aaron Whigham Agency Contractor

    Microsoft Access Development And Troubleshooting. Web Scraping

    United States - Last active: 3 months ago - Tests: 8 - Portfolio: 12

    No problem too big no task too small. Let me provide quality professional Access Development to solve your business needs. Need an Access database that is web capable? Let me take your Access Database Mobile and even Global for that matter. I will create an access database that your sales team will use on a mobile tablet PC to collect handwritten signatures in the field. I can also automate a custom email process that will send signed documents to concerned parties. To see an example of a tablet PC application that collects handwritten signatures, view my portfolio images. More about me: I am a very humble, respectful, and hardworking professional. I have Eleven years of experience in IT Support. Moreover, I have acquired valuable experience in all facets of designing, developing, and troubleshooting custom Microsoft Access VBA Database Solutions. My experience includes: • Developing Tablet PC Access Database applications that collect handwritten signatures. This type of Database is connected to the cloud and provides automatic synchronization to the server every time a user logs on after being offline. • Creating automated custom emails for Access database applications • Migrating Legacy Microsoft Access systems to Current Microsoft Access Systems. • Linking and importing from Excel and SQL Server. • Creating SQL Server Integration Services Jobs to automate Importing to SQL Server from Excel and Access • Creating SQL Server Stored Procedures • Creating Complex SQL queries • Creating Complex VBA procedures and functions Also, I have used ASP.NET C#, Ajax to develop several solutions with SQL server backend databases. I have Top 10 scores on the following oDesk test: *MS Access 2007 *MS Excel 2003 *MS Word 2003 *Microsoft Access 2010 I have developed many database applications from the ground up. Applications I developed include: *College Student Registration and Reports database *Library Card Catalog Management System *Mandatory Supervised Released Reports for a Prison system *Requisition and Inventory Tracking application *Firearm Training and Certification Tracking System *Sales Pipeline Tracking System *Amazon Sales Ranking System Additional experience includes developing SQL Server based Power Pivot Reports for Excel, Installing and configuration several network computer labs. The labs were windows server based. I configured Active Directory and used Group Policy to set security parameters. My Daily duties included maintaining and troubleshooting the network, training students on Microsoft Office suite, and training new employees on Active Directory, Group Policy and command line Network troubleshooting. I am looking forward the possibility of discussing your project in more detail. Respectfully, Aaron Whigham

    Associated with: Frontier Data Solutions

    $45.00 /hr
    217 hours
    5.00
  4. Sergii Tymchuk

    Sergii Tymchuk Agency Contractor

    Ukraine - Last active: 2 months ago - Tests: 1 - Portfolio: 25

    I am sure that you have already viewed many other companies, but still let me draw your attention to ours. It won’t take much time, but may be in future it will save your time cardinally. You have to choose the best and understand why we have to help you in your project or solve your problem. To help you understand why you should consider Computools, here is what sets us apart: http://computools.com/about/why_us

    Associated with: Computools

    $20.00 /hr
    43 hours
    4.98
  5. Binoj Daniel

    Binoj Daniel Agency Contractor

    ** Expert ASP.NET-PHP-SQL-WordPress-JQuery- Developer with 15+ Exp. **

    United States - Last active: 2 months ago - Tests: 6 - Portfolio: 14

    I have developed a wide range of Websites, Desktop & Tablet Apps, Phone Apps using ASP.NET MVC, Classic ASP, C#, Entity Framework, XAML, VB.NET, ASP.NET, AJAX, JQuery, HTML5, Bootstrap, AngularJS, NUnit, MS Test, Responsive Design, WordPress, XCart, CS-Cart, Joomla, Drupal, Magento, PHP, MySQL, SQL Server, SSIS Packages including websites for start-up companies, small and medium businesses. My core competency lies in complete end-end management of a new website development project, building and managing eCommerce solutions, and I am seeking opportunities to build websites from the ground up for you or your business. Over the period of 15+ years of enterprise development, I have learned and implement all software developed related best practices and standards including test driven development, code coverage, unit testing, continuous integration, application security and code cleanup. You won't find many developers our there who follow S.O.L.I.D principals while writing clean and production code at all times.

    Associated with: CouncilSoft Agency

    $50.00 /hr
    1,398 hours
    4.97
  6. Alexandr Peremey

    Alexandr Peremey Agency Contractor

    .NET Developer

    Ukraine - Last active: 06/08/2010 - Tests: 1 - Portfolio: 11

    Computer skills: * .NET * C# * ASP.NET 2.0, 3.5 * Windows Forms * LINQ * MSSQL * HTML * JavaScript * XML My principles of development: * Clear, well structured code. * Sharing tasks between separate, independent units, when possible. * Separating business logic from data representation. * Effort to create flexible software components, applicable to solving different tasks. * Being in touch with modern technologies that can accelerate software development and make it reliable. Using these technologies when necessary. * Life-time support of my projects. Attitude to work: I do what I like to do, and get money for that.:) Professional experience: Web development - 3 years Programming - 4 years

    Associated with: RoverSoft Agency

    $12.50 /hr
    26 hours
    4.85
  7. Claudiu Farcas

    Claudiu Farcas Agency Contractor

    Mr.

    United Kingdom - Last active: 12/07/2011 - Tests: 5 - Portfolio: 9

    Analyst programmer with more than 10 years experience in IT field and teams/projects management, and all this time I have been working with different technologies, starting from the old database applications FoxPro, Visual FoxPro and continuing with Visual Basic, MsAccess, SQL and the new object-oriented technologies, programming .NET(C# and VB.NET, WCF, WFP, Silverlight, Windows Phone 7) and java Android (Android Mobile Framework), working with desktop applications, mobile applications, as well with web applications. I have actively contributed to the development and finalization of some series of projects oriented towards supporting customer and IT professional community processes and business models.

    Associated with: Just Windows Phone

    $30.00 /hr
    86 hours
    5.00
  8. Denis Sever

    Denis Sever Agency Contractor

    More than 10 years of software development experience

    Russia - Last active: 11/01/2014 - Tests: 5 - Portfolio: 2

    SUMMARY: I have a large experiense in software development and database design. Over the last 10 years, I have developed 9 big and about 12 small projects. KEYWORDS: Project management, system analysis, C#, VB.Net, ASP.NET, SQL, .NET, AJAX, OOP, Design Patterns, UML, Java, J2EE, Extreme programming (XP), HTTP, CSS, JS, XML, MySQL, Microsoft SQL Server, Oracle, DB2, RBase, Postgres, ADO .Net, MT4, MQL4, MT5, MQL5, CMS, CRM, ERP.

    Associated with: North Develop Group

    $33.33 /hr
    1,460 hours
    4.93
  9. Wojciech Kozłowski

    Wojciech Kozłowski Agency Contractor

    Poland - Last active: 01/30/2013 - Tests: 2 - Portfolio: 4

    IT professional & data scientist with more than 10 years of experience in software development and data analytics. Programming languages : C/C++, Java, R, Python. Also familiar with web and mobile technologies. I represent a company specializing in Big Data, machine learning and NLP related projects. We have a proven record of acomplishments in successfully delivering projects both to start-up as well as medium size and large companies from United States and Europe. We are a passionate team of skilled IT professionals and are ready to accept your challenge. We're strongly motivated to deliver only the highest quality solutions and within the customer specified deadline. See our site: http://offshoreoutsourcing.it for details and refererences.

    Associated with: infortex

    $38.89 /hr
    325 hours
    5.00
  10. Igor Golodnitsky

    Igor Golodnitsky Agency Contractor

    Senior Asp.Net/jQuery developer

    Ukraine - Last active: 04/20/2014 - Tests: 16 - Portfolio: 1

    Fullstack mssql/asp.net/jquery developer. Last contract was with BDA - indie game studio, on Realm Of Empires - MMORTS game. I was responsible for moving to mobile devices in form of SPA, html5, css3 and more than 40 000 LoC of js. Before that I was creating web applications for business area: CRM, ERP, Commodity Trading, Helpdesk, Tourist. Technology stack: - asp.net (forms, mvc), .net 4.5, c# - mssql 2000-2012, entity framework - amazon and rackspace cloud

    Associated with: DynBack

    $22.22 /hr
    3,019 hours
    4.81