Top Upwork Freelancers

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  1. 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
    34 hours
    4.92
  2. Sergei Kintsel

    Sergei Kintsel

    Ruby on Rails/AngularJS/Ionic developer

    Russia - Last active: 1 day ago - Tests: 6 - Portfolio: 3

    _  I am a passionate Ruby on Rails/JavaScript programmer and analyst working through TDD and BDD. I have 4 years of experience in developing web applications. My main skills are Ruby on Rails, Sinatra, CoffeeScript. In my projects I've used JS Frameworks like Backbone.js and AngularJS. I have big experience in creating mobile applications based on Ionic Framework. I am good in both HTML5 and CSS3. I've been working on Responsive and Flexible layouts. I have been working with much count of databases including relational, document oriented, graph databases. For example: MySQL, PostgreSQL, MongoDB, Neo4j etc. I pay great attention to provide regular communication with my customers being online as long as possible every day. While I work on a project my main task is providing great fast flexible software and make my client be happy with the results.

    $44.44 /hr
    1,960 hours
    4.50
  3. Virginia Aronson

    Virginia Aronson

    Author/Ghost 40+ Books

    United States - Last active: 3 days ago - Portfolio: 5

    Virginia has published dozens of books in a variety of genres with Random House, Doubleday, Penguin, Prentice Hall, and small indie presses. She has written books for people at the White House and Harvard University. She's helped doctors, lawyers, professionals and everyday folks to get their stories into print. She will edit your work, coach you as you work, or ghostwrite from an outline. Reliability and professionalism guaranteed. Subject matter of published work ranges from health and wellness, cookbooks, and memoir to literary fiction and steamy romance. Nonfiction articles, poetry, flash fiction, novellas, novels, she's published it all.

    $30.00 /hr
    0 hours
    5.00
  4. Joseph Francis

    Joseph Francis

    Extrovert, energetic and young. Ready to write.

    United Kingdom - Last active: 9 days ago - Portfolio: 3

    I am a young and energetic writer with a versatile form and published pieces in an eclectic range of subject areas - from medieval witch trial manuscripts to jungle trekking in Southern Thailand. I'm ready to undertake writing work in a number of different genres, but my specialties include travel writing, academic writing in English literature and online content production. Having completed two separate writing internships and achieved a first class honours in English Literature and ancient history at university, I pay particular attention to deadlines and will deliver original and energetic prose for a fair price.

    $35.00 /hr
    2 hours
    5.00
  5. Ronald H.

    Ronald H.

    Voice Over Artist, Deep Voice to Midrange, Commercials to Characters

    United States - Last active: 3 days ago - Portfolio: 5

    I offer a skilled voice that has performed in many roles over 15 years in commercial and independent radio. As a freelancer, I have voiced straight forward narration, explainer videos, character acting, commercial reads, inspirational devotionals, and aggressive imaging. I will work to bring the right voice to your ideas. My voice is distinctive and will help your project have the impact you desire.

    $24.44 /hr
    0 hours
    5.00
  6. Martin D.

    Martin D.

    Frond End Developer

    Macedonia - Last active: 10/16/2014 - Tests: 1

    I'm a front-end developer from Macedonia with strong experience in HTML5, CSS3, JavaScript (JQuery) and Bootstrap. In the past 4 years I`ve been developing (and designing from time to time) websites that work great across all devices and platforms. Although I`m dedicated on the technologies mentioned above, I`m am familiar with: Basic PHP, AJAX calls and MVC patterns.

    $22.22 /hr
    181 hours
    5.00
  7. Pete Littlewood

    Pete Littlewood

    Web Applications Developer

    United Kingdom - Last active: 6 months ago - Tests: 7 - Portfolio: 3

    I primarily develop bespoke web applications and systems that integrate with desktop applications, however have used my web programming skills to create custom web scraping/data mining utilities for a variety of clients, both on oDesk and offline with other clients. I am strongest coding with web technologies such as PHP, Ajax, jQuery etc however have also completed tasks in lesser known languages such as Coldfusion. Away from web development I am also a proficient Visual Foxpro developer and currently in the process of progressing in C# which is one of the most popular desktop programming languages currently.

    $17.78 /hr
    86 hours
    5.00
  8. Vasily S.

    Vasily S.

    Project Manager with development and system administration skills

    Russia - Last active: 12/11/2010 - Tests: 4 - Portfolio: 3

    I'm IT geek and from 2004 I developed a huge amount of various software products and services. Most of all I'm experienced in Product and Project Management, Ruby and Ruby on Rails development and Linux administration. If you need a man to solve tough technical or architectural problems you are welcome.

    $50.00 /hr
    14 hours
    5.00
  9. Petru C.

    Petru C. Agency Contractor

    Web Application Architect / PHP - Symfony Specialist

    Romania - Last active: 9 days ago - Tests: 2 - Portfolio: 5

    - Full stack web application developer / web application architecture - IT consultant specialized in enterprise web application development using PHP frameworks(Symfony, Zend, Propel, Doctrine) and Javascript frameworks (AngularJS, JQuery) - SPA, SAAS architecture and modern design patterns evangelist - User and supporter of Open Source Technologies - Debian Linux fan & promoter - Experienced in SEO/SEM (Search Engine Optimization/Search Engine Marketing) and building SEO/SEM tools - Data wizard - integration of 3rd party data systems (requesting/parsing/deploying data) - Well-versed in Internet Marketing tactics and online advertising - Huge fan of XP (Extreme Programming) philosophy and Agile Development practices Specialties: Programming languages(and related): - PHP ✔ - PL / SQL ✔ - HTML5 / XML ✔ - CSS ✔ - JavaScript ✔ - Shell scripting ✔ Frameworks: - Symfony ✔ - Propell ✔ - Doctrine ✔ - ZendFramework ✔ - AngularJS ✔ - JQuery ✔ - AutobahnJS ✔ Platforms and technologies: - Ajax ✔ - Web Sockets ✔ - MySQL ✔ - PostgreSQL ✔ - MongoDB ✔ - SVN / CVS ✔ - Apache ✔ - REST / SOAP / XML-POST / XML-RPC ✔ - CMS/BLOGS(Wordpress) ✔ - PayPal SDK and API integration ✔ - Linux(Debian, RedHat/Centos, Ubuntu, OpenSuse) ✔

    Associated with: AtomPulse Works

    $30.00 /hr
    0 hours
    5.00