Top Upwork Freelancers

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  1. Brian Calvillo

    Brian Calvillo

    Mobile Developer

    Spain - Last active: 17 hours ago - Tests: 1

    I started in Canalip, one of the best web development companies and SEO pages using PHP, MySQL and jQuery with Joomla frameworks. Then I worked in Novaigrup, developing online stores and custom projects by programming from 0. In Novaigrup i development projects for Purina. After completing a course on Android Mobile Buisness and entered Applications to develop the CRM app Optimasuite for commercial mobility. Then as I entered Innofis mobile apps developer developing high level for major companies like leading bank Arabic Alhali (NCB), Salespoint (app for business in mobility) and the app "Feed Smiles" from Danone.

    $16.67 /hr
    1,617 hours
    4.85
  2. M Rizal Firmansyah

    M Rizal Firmansyah

    +15 years ColdFusion, VBA, Delphi Experienced Developer

    Indonesia - Last active: 1 day ago - Tests: 5 - Portfolio: 6

    New on oDesk. Special Introductory Price. 100% satisfaction or I don't deserve your money. +15 years experience. Solution oriented software engineer, designer and consultant. I'm an expert in architecting, developing, deploying and maintaining system solution at any scale. I've worked on simple websites to telecommunication backend with 12TB of data. One of my unique skill is that i'm very good in designing nice and friendly user interface. Another unique skill I have is that I'm equally proficient in Windows programming, UNIX, web app, Android and database. Being both an engineer and designer, I help clients bring their ideas into reality. Contact me today and I would love to hear about your business.

    $28.00 /hr
    514 hours
    4.92
  3. Daniel Guillermo Bareiro

    Daniel Guillermo Bareiro

    GNU/Linux and Unix system administrator

    Argentina - Last active: 17 hours ago - Tests: 2 - Portfolio: 2

    I manage and use free/open source software and GNU/Linux (most experienced Debian) since 2000. I have also participated in numerous conventions related to these themes (some of them as speaker) and collaborating with the discovery of bugs in applications for contribute with the community. Specialties: Networks and operating systems security, monitoring technologies. Advanced knowledge of GNU/Linux environments and virtualization platforms. LANs, WANs, VPNs, Firewalls, TCP/IP. Description of services: ---------------------------------- Servers: ====== Installations, configurations and maintenance plans for servers running GNU/Linux or free BSD operating systems range. * Planning, installation and configuration of GNU/Linux systems as both free and open source systems. * Installation, configuration and maintenance of servers of BSD range: FreeBSD and OpenBSD. * Print servers. * Mail servers with spam and virus filters. * Proxy servers. * Fax servers. * Corporate instant messaging servers. * Install and configure DNS servers. Procedures for domain management. * Management servers for uninterruptible power supplies. * Web servers (Apache, PHP, MySQL and PostgreSQL). * Database servers (MySQL and PostgreSQL). * DHCP servers. Networks and Infrastructure: ===================== Installation, maintenance and failure analysis of networks. High-availability systems, mass storage, remote backup, and monitoring equipment and services. * Installation and maintenance. * Firewalls. * VPNs. * DMZs. * RAID, SAN and NAS systems. * Implementation of VoIP telephony systems. * Virtualization systems (for production systems, development and testing). * Remote backup systems. * Monitoring systems. * Control, preventive analysis and resolution of faults in networks. * Installing and configuring high availability clusters. Consultancy: ========== My main goal is to provide a work environment based on trust, integrity and transparency, in order to become your strategic partner to help you realize your projects. My experience in the field of free/open source technologies allows me to offer a wide range of consulting services for your business, which include audit and analysis of systems, applications and networks, migration to free and open source systems, and systems integration, among others. * Migrating to free and open source systems. * Network analysis. * Security analysis. * Configuring applications. * Systems integration.

    $36.67 /hr
    33 hours
    4.92
  4. Michael Weis

    Michael Weis

    Award-Winning English Editor

    United Kingdom - Last active: 7 days ago - Tests: 6 - Portfolio: 8

    Michael Weis is the award-winning editor that has more than 15 years' experience. He has a unique personal touch and a lifelong passion for English literature that enables him to turn the written words into perfection. His main areas of expertise include: impeccable grammar, spelling and punctuation (US and UK English), syntax, style and tone, flow and organization. Michael Weis is also the author of many eBooks that are sold in more than 220 000 copies.

    $30.00 /hr
    26 hours
    4.99
  5. Hoang Duy Anh Tran

    Hoang Duy Anh Tran

    Senior developer

    Vietnam - Last active: 2 days ago - Tests: 2 - Portfolio: 6

    With over 8 years of experience in many kind of projects, mainly in .Net technologies such as WPF, WCF, Biztalk, Asp.Net, SqlServer, ... as well as mobile platforms such as: Android/iPhone/WindowPhone. I am seeking for the opportunities to develop challenge systems. I also consider freelance is my job. Please visit my site (personal page) for the updated portfolio http://duyanhth.com/?page_id=5

    $30.00 /hr
    1,069 hours
    4.93
  6. 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
  7. Elizabeth Romero

    Elizabeth Romero

    Systems Engineer - Software Developer

    Colombia - Last active: 17 hours ago - Tests: 5 - Portfolio: 1

    Software developer with 5+ years of experience in analysis, design and development web aplications. Expert in developing web applications, windows services and web services in Microsoft Visual Studio 2012 using C# .Net, Framework 4.5 and SQL Server. - Proficient in Web Services, SOAP, XML, XSL, XSLT, CSS, HTML, AJAX and JavaScript. - Extensive experience in SQL Server Database design, Database maintenance, developing Transact-SQL Statements, stored procedures, using SQL Server 2008. - Experience using MS SQL Server Integration Services (SSIS) - Solid experience with Application Servers / Web containers such as: JBoss - - Server, Glassfish Server, IBM WAS, Apache Tomcat and Jetty. - Experience with Unix-like (Linux, UNIX, Solaris and AIX-IBM) and Windows-x. - Good working knowledge in UML, Design Patterns, MVC (Model-View Controller), Web-Services. - SOAP, XML, XSD and WSDL - Functional domain experience involves logistic, transport, import and export merchandise.

    $19.00 /hr
    2,767 hours
    5.00
  8. Mauricio Offermann Palma

    Mauricio Offermann Palma

    Computer Engineer

    Chile - Last active: 17 hours ago - Tests: 2

    I'm a Computer Engineer , during my career I have worked managing , designing and developing custom web applications for clients of different nature and in many different languages, but definitely my biggest strength is Salesforce APEX. My experience divided into three areas: Project Management We perform planning activities in the short term , while maintaining excellent communication with the customer , give daily reports on the progress of the project which include the activities performed, the problems encountered and the proposed solutions . Application Design Often the technical details make a big difference in implementation , which is why I worry about guiding the client presenting the best solution strategies , considering important issues such as security of information, the application performance , use of resources , the way they behave in the future scenarios with massive data loads or increased volumes of information. Software Development I believe that application development is my strongest skill have much experience in various languages ​​such as Java, C # or Ruby , mainly oriented web solutions , management naturally javascript ( including jQuery ) , CSS , JSP , HTML . Have special ability to manage MySQL , PostgreSQL , SQL Server and more databases. However, the last 7 years I have specialized in developing applications on the Salesforce CRM . These applications include design , process automation , configuration , workflows , validation rules , triggers, Visualforce pages, Apex classes and components . In addition to integrations with other systems using webservices and bulk batch .

    $40.00 /hr
    1,352 hours
    5.00
  9. Mykhailo Smyrnov

    Mykhailo Smyrnov

    Java Developer

    Ukraine - Last active: 17 hours ago - Tests: 2

    I am a Java Developer with 3+ years of experience. I have skills in building Java-based web-applications using following technologies: - Core Java - JavaEE (Servlet, JSP, JSTL, JDBC, JPA) - Spring Framework (Spring MVC, Spring Security) - Hibernate - JavaScript (jQuery, AngularJS) - JUnit - Maven - Git I also have a great desire to start working with Scala-based technologies: Scala Lang, Play Framework, Akka, Slick. I am looking for opportunities to apply my skills. Additional language: Russian (fluent).

    $17.00 /hr
    1,778 hours
    5.00
  10. Chris H.

    Chris H.

    Web Developer (ASP.NET | MVC | AngularJS)

    United Kingdom - Last active: 17 hours ago - Tests: 6 - Portfolio: 6

    Microsoft Certified Solutions Developer with over three years’ programming experience using .NET framework to deliver web and desktop applications. I’m a passionate C# developer with extensive knowledge and experience with: - ASP.NET back and frontend development, including WebAPI 2, MVC 5 - Client side scripting, JavaScript, jQuerry, AngularJS, Knockout - Clean and SEO-Friendly HTML5 and CSS - Task automation using Poweshell scripting and C# applications Committed to designing up to spec, reliable and extendable solutions. Focused on delivering quality work on time and within budget. Always open for communication. Highly flexible, independent contractor that will get the job done for you.

    $20.00 /hr
    199 hours
    5.00