Top Upwork Freelancers

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  1. Evgeny V.

    Evgeny V.

    Expert in web development, PHP, JavaScript, database programming

    Russia - Last active: 1 day ago - Tests: 5

    I have more than 5 years of experience in web-sites creating, using PHP/MySQL for backend and HTML/CSS/JavaScript for frontend. Also, I have been working with Oracle database for more than 10 years (procedures, functions, packages, triggers etc on PL/SQL). I have experience in developing client applications on C#. My skills: Web: PHP, JavaScript, jQuery, HTML5, CSS, WordPress, Bootstrap, Python Database: MySQL, Oracle 10g/9i/8i (PL/SQL as well), SQLite Desktop: C#, WPF

    $15.00 /hr
    15 hours
    5.00
  2. Saul H.

    Saul H.

    Java/C++/.Net Software Engineer/developer/integrator/consultant

    Venezuela - Last active: 5 days ago - Tests: 3

    Knowledge Areas and skills Custom Software Development, POS, intranet system, administrative systems and integration with intelligent software solutions consolidate, organize and centralize amount of information located in different divisions and departments, so that executives make decisions about payments, suppliers , prices, materials management, promotions, etc. Algorithms and programming skills, strong knowledge of C/C++ and Java. Strong knowledge of data structures, strings, sorting, arithmetic and algebra, combinatorics, number theory, backtracking, graph traversal, Algorithms for graphs, dynamic programming and computational geometry. Accounting area, experience in handling all movement of materials between stores and shops, all the accounting related to its retail. Point of sale Area, experience with integration between POS software and label printers, fiscal printers, barcode readers, fingerprinter and keyboards for point of sale. Oriented Object Programming and Low-level: exprienced in Java and C/C++/C#. QT libraries and Visual Basic. Scientific Programming: Matlab. IDES: Intellij Idea, Eclipse, Netbeans, Kile, Quanta. Servers: Apache-Tomcat. Functional Programming and AI: Haskell and Prolog. Database: MySql Oracle, Postgres, SQL Server and FoxPro. Web Development/Frameworks: Php, Struts, Vaadin, ZK, html and css.

    $30.00 /hr
    1,756 hours
    5.00
  3. Terence Taih

    Terence Taih

    Senior Java Developer

    Vietnam - Last active: 12 days ago - Tests: 2 - Portfolio: 1

    I'm a Senior developer with more than 5 experience years on enterprise-grade development. My strongest skill is Java. I have worked with many Java framework from web to database. - Web: Play framework, Tapestry framework, Struts, Spring MVC. - Database: Hibernate (MySQL), Hector (Cassandra), Morphia (Mongo), Redis - Cache: Hazelcast, MemCache. - Search: Elastic search, Apache Lucene - API: Resteasy, Jersey - Beside them, I usually work with: Linux, Jetty, Tomcat, JBoss, Nginx, Amazon EC2, Amazon S3, Amazon CDN, OAuth, Restful API, Web service, Json processing (org.json, jackson) - And have worked with (administration and query ) both database SQL (MSSQL, MySQL, ...) and NoSQL (Cassandra, Mongo, Redis …). About another language, I can code with Nodejs well. I already build project with Nodejs, express and MongoDB. I'm looking for long-time contract, in challenge/interesting project, get exciting experiences to archive my dream: To become an excellent software architect. I will try my best to perform projects, meet all requirements and believe on making customers satisfied.

    $15.00 /hr
    186 hours
    4.69
  4. Nelson Francisco

    Nelson Francisco

    Software Engineer

    United States - Last active: 7 days ago - Tests: 9

    15+ progressively responsible years of experience in program development, systems analysis & design, database management, project leading and training. Strong knowledge and skills in problem analysis, structured programming design and techniques, debugging and testing procedures, and data/file manipulation. Demonstrates ability to work effectively in team setting and adapt to dynamic priorities based on business requirements.

    $55.56 /hr
    505 hours
    4.92
  5. Yuri M.

    Yuri M.

    Java/C++/DB Developer

    Ukraine - Last active: 1 month ago - Tests: 11 - Portfolio: 6

    7+ years experience in various projects. In my development practice I've worked on both desktop and web-projects where I've used different libraries and frameworks. I have experience in such areas: * as Java developer: Swing, SwingX, EJB 3, Struts, Spring, GWT, Hibernate, JDBC, JSP, XStream, Jetty, JUnit * as DB developer I've worked with MySQL, Firebird, MS SQL Server, PostgreSQL, H2. * as C++ developer: boost library, ability to write cross-platform code, MFC, Qt * worked with applications for project designing: Rational Rose, Visual UML, StarUML, Microsoft Visio. Good understanding OOP and data-store concepts. Also I have some experience in following areas: Microsoft .NET, Ruby on Rails, PHP and Python.

    $30.00 /hr
    4,048 hours
    5.00
  6. Alex Denisenko

    Alex Denisenko

    Android developer

    Ukraine - Last active: 2 days ago - Tests: 5 - Portfolio: 2

    Hello, My name is Alex Denisenko. In my portfolio you can see there are few programs that I’ve developed. If you’re interested in quick creation, trouble-free performance and extensible of your applications, I will be the best choice for you. I already created apps for Android, and all of my clients was been extremely satisfied, verify this you can if you will see my jobs history. Also I have strong skills in constructions of algorithms( won in regional ACM ICPC programming contest), object-oriented programming and working with third-part libraries( I was work with Facebook API, Flickr API, Instagram API, also used libraries for work with PDF files). I will ensure that I will do your job in deadline. I think that my main advantage is ability to learn quickly. I guarantee that your applications will work in all used versions of Android(sure, if you need that). Apart from my knowing Android, I can programming with C++(with QT if needed), have skills of game and computer graphics programming. Hire me today - you will not regret.

    $20.00 /hr
    177 hours
    5.00
  7. Diaa Sami

    Diaa Sami

    Professional C++ Developer, Software Engineer, Computer Wizard

    Egypt - Last active: 4 days ago - Tests: 18 - Portfolio: 9

    I am an ambitious and established software developer who started development in highschool, I'm fond of graphics and interactive applications in general and the open-source philosophy. I have used several programming languages, frameworks and APIs, including but not limited to C/C++, .NET, Java and Python, wxWidgets, OpenGL, Win32, COM and sockets, I've programmed for several platforms ranging from hand-held devices to Desktops(Windows and Linux) and client-server applications. I'm always interested in challenging jobs.

    $27.78 /hr
    2,086 hours
    4.99
  8. Maciej Klepaczewski

    Maciej Klepaczewski

    Web Performance Optimization Engineer

    Poland - Last active: 1 day ago - Tests: 2 - Portfolio: 2

    I specialize in Website Performance Optimization (WPO). In particular I do: * MySQL optimization, * PHP optimization, * HTML/JavaScript/CSS related optimizations. I can guarantee page loading times in range of 1-3 seconds or less. I also have experience in web scrapping and handling large amounts of data (where by big data I mean at least dozens of gigabytes). I have masters degree in Computer Science from Wroclaw Technical University. I'm experienced programmer with 15 years of experience (I coded my first software in high school).

    $80.00 /hr
    883 hours
    5.00
  9. Darren Davies

    Darren Davies

    Software Engineer

    United Kingdom - Last active: 13 days ago - Tests: 2 - Portfolio: 2

    A professional Software Engineer based in the England (North East). BSc (Hons) Computer Science, Microsoft Certified Professional and Microsoft Specialist. Experience in the following technologies: C#, C, C++, Delphi, VB6, VB.NET, ASP.NET MVC (nHibernate, Fluent nHibernate, Entity Framework), ASP.NET, Java, PHP, SQL, T-SQL, SQL Server, MySQL, SSRS, SSIS, SharePoint (2007, 2010, 2013), mIRC Scripting, Workflow, K2 BlackPearl, HTML, HTML5, CSS, jQuery and JavaScript.

    $70.00 /hr
    935 hours
    5.00
  10. Sergey L.

    Sergey L.

    Senior Web Developer PHP/MySQL/API, Javascript/HTML/CSS, MEAN

    Ukraine - Last active: 1 day ago - Tests: 7 - Portfolio: 3

    Professional and reliable programmer with 7 years of experience and excellent skills in software development. * PHP5/ MySQL * Ajax/ jQuery/ Javascript/ AngularJS/ Bower * HTML5/ CSS3/ Responsive design (Bootstrap) * APIs (Facebook/ Twitter/ Google/ Stripe/ PayPal/ Mailchimp etc.) * WordPress/ WooCommerce - plugins and theme development/ Customization PHP5/ Node.JS MVC Frameworks: * CakePHP * CodeIgniter * Laravel * Yii - framework * MEAN Version control — SVN, GIT (GitHub, Jira, Assembla etc.)

    $25.00 /hr
    5,878 hours
    5.00