Top Upwork Freelancers

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  1. Ivan K.

    Ivan K.

    Backend developer

    Russia - Last active: 9 days ago - Tests: 2

    My preferred languages are Ruby and Perl, although I write PHP code quite often too. I've had a full-time job as a backend developer for the past 5 years. I'm familiar with a pretty wide spectrum of technologies in backend technology stack: relational databases (MySQL, PostgreSQL), NoSQL (MongoDB, Redis), message queues (RabbitMQ). I'm comfortable with Linux and can do server setup and some common sysadmin tasks. Currently I'm mostly looking for part-time contracts.

    Groups: Coding Champs

    $35.00 /hr
    53 hours
    4.97
  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. Aniruddh P.

    Aniruddh P.

    Sr Java Developer

    Australia - Last active: 14 days ago - Tests: 4 - Portfolio: 1

    Over the last 12 years I have been working on Java/J2EE, Struts, Swings, Xml Api's and mobile technology related projects. My core competency lies in most of the Java Api's as well as in developing new applications as well as providing expert support for maintaince applications. I am very good at coming in at any stage of the application development and getting on with providing expert assistance. I am seeking oppurtunities to work on Java and web technologies. I have been involved with a variety of projects ranging from taxation/accounting applications to telecom projects to enterprise asset managment applications. Thanks and Regards

    $25.00 /hr
    3,262 hours
    5.00
  4. Ivan Volzhev

    Ivan Volzhev

    Mr.

    Ukraine - Last active: 3 days ago - Tests: 11

    Server side web-programming using Java or C#. Server layer in complex desktop aplication. Common architecture development. Take a part in big projects. E.g. train seats booking system for Ukranian state railway. Was involved in 4shared.com development. Have great interest in Common lisp and erlang, but no experience. Javascript projects also welcome. But I prefer server side things.

    Groups: Coding Champs

    $25.00 /hr
    34 hours
    5.00
  5. Dmytro S.

    Dmytro S.

    Web/Software Developer - Java/Flex/Flash/3D/HTML/CSS/JS/Unity3D

    Ukraine - Last active: 1 month ago - Tests: 8 - Portfolio: 2

    Over the last 8 years, I have developed a range of websites using HMTL, JavaScript, Tibco GI, Flex, Flash, Unity3D, Java(JSP, Servlets, Struts, etc.) and MySQL, MS SQL Server, Oracle including sites for startup companies, small businesses and very large CRM applications for bank with world name. 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 good experience in the following areas: 3D development, OOP, SQL, Ajax and software design and testing.

    $38.89 /hr
    2,009 hours
    5.00
  6. Jibran Ahmed

    Jibran Ahmed

    Python Web Developer (Django)

    United Arab Emirates - Last active: 19 days ago - Tests: 12 - Portfolio: 6

    I'm a Python developer with over 5 years of experience in developing web apps in Django. I have worked on some of the biggest sites in the Middle East, including Dubizzle (the #1 classifieds portal in the UAE and MENA region), Nabbesh (A Middle East focused freelancing platform) and JustRentals.com. Each of these sites generated millions of hits per month, with Dubizzle being the #7 ranked website in the UAE. Working at these scales has taught me a lot about how to develop Django based web applications that can scale to handle any amount of traffic, and I've worked with teams of over 50 developers, learning how to write good clean code that others can work with.

    $40.00 /hr
    72 hours
    4.67
  7. Daniel Guillermo Bareiro

    Daniel Guillermo Bareiro

    GNU/Linux and Unix system administrator

    Argentina - Last active: 1 day 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
  8. Eugene S.

    Eugene S.

    Professional Developer

    Russia - Last active: 1 day ago - Tests: 3 - Portfolio: 4

    I have years of experience with C/C++/C#, .NET, ASP.NET MVC, JQuery, SQL, LINQ, Entity Framework, TSQL, etc.I managed to work on various projects, have developed a number of websites and services for international companies as well as desktop applications for the small business. I have skills with wide set of Microsoft technologies. Also I have skills with Delphi, VB, have graduated Math dept and am seeking interesting projects with great wish to collaborate.

    $16.67 /hr
    48 hours
    5.00
  9. Naresh Holla

    Naresh Holla

    Expert Designer Developer

    India - Last active: 4 days ago - Tests: 3

    I have total of 11 + years of experience in development of software. My core compentencies are in the windows application development using VC++ both 6.0 and VC++ 10, C# .net winforms in VS 2008, VB 6.0. This involves design and development of DLLs, EXEs, COM DLLs, ActiveX Controls and so. I have used SQL server extensively and wellversed in the development of stored procedures triggers, creating tables and views and several other DB operations. Also, I have a short development experience in ASP and an application hosted on IIS 6.0. In short I have the working knowledge of variety of window technologies and organizing and deploying them in different environments. Along with these experiences, I have acquired, quality assurance experience in which I was involved in entire life cycle product development as SQA associate about an year. This experience showed the insight from beggining of development, until the end of the release, going through conducting reviews at each stage of the release, verifying and certifying the deliverables with CMM maturity standards that organization set and at the end releasing the Project. At present, since 3 years, I am involved the product development and maintainance in my present company where we take care of entire bug fixing, enhancement, multiple integration with peer products and their maintainance, client interaction and differenent stake holders interaction and so on.

    $33.33 /hr
    453 hours
    5.00
  10. Farhan Ali

    Farhan Ali

    Oracle DBA & Architect

    Pakistan - Last active: 11 days ago - Tests: 3

    I have more than 12 years of experience in Oracle Database Administration and Development. During my career as DBA, I have managed more than 40 Oracle databases at a single time which included RAC environments also. Performed installation, configuration, performance tuning, RAC installation and administration, DB migration/upgrade, Grid/Cloud control, Data Guard. I have served as Apps DBA for Oracle EBS R12 also for which I have performed installation, administration, cloning, patching, migration, upgrades. In my career as Database Developer, I have worked on the Database Design, Development and Implementation of Core Banking Solution for two largest banks of Pakistan (UBL and MCB).

    $16.67 /hr
    149 hours
    5.00