Network & System Administrators

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  1. Daniel Ostrovsky

    Daniel Ostrovsky

    Senior FrontEnd Developer

    Israel - Portfolio: 4

    7+ years experience in UI development for web applications. Perfect CSS, HTML, Javascript and JQuery skills. Strong understanding of PHP, Smarty, MySQL. Experience in creating cross-browser. Knowledge in using Photoshop. Solid understanding of web technologies and web applications. Fast learning, teamwork, creativity, problem solving, responsibility, resourcefulness, technical and technological skills. Specialties Languages and frameworks: HTML4/5, DHTML, CSS2/3, JavaScript, MooTools, JQuery, AJAX, XML, PHP, Smarty. Graphical tools: Adobe CS4/5, (Flash, Photoshop, Acrobat). Balsamiq Studios.

    $55.56 /hr
    8 hours
    5.00
  2. Vitaliy Vasilenko

    Vitaliy Vasilenko

    Python Developer and Linux Server Administrator

    Ukraine - Tests: 2

    I am a python developer, QA engineer and *nix system administrator, and I seek a challenging and rewarding tasks. I have more then five years of work experience. My core skills are: * Linux administration (Ubuntu, Debian, CentOS) * FreeBSD administration (7, 8, 9) * Monitoring (Nagios, Cacti, Zabbix) * Databases (MySQL, MariaDB, PostgreSQL, MongoDB) * Highload * VCS (git, bazaar)

    $10.00 /hr
    0 hours
    4.85
  3. Margulan Moldabekov

    Margulan Moldabekov

    IT security engineer / devop

    Kazakhstan - Tests: 4 - Portfolio: 2

    I got nearly 4 years of experience in freelance. I've worked in such fields as load balancing, high-load, databases, system development, i18n & l10n, enterprise solutions (JBoss EAP, IBM Lotus). Now I am focused at devop field. From the beginning security was my passion, so this decided my future development path. As a client you'd be interested what can I do, so this is my skills and abilities: Operating systems: - Linux - *BSD (FreeBSD & OpenBSD) Virtualization: - Xen - KVM - VMware vSphere Programming skills: - C/C++ - Ruby - Python - Javascript - Haskell (beginner) Databases: - MySQL (MariaDB) - PostgreSQL - Mongo - Redis HTTP Servers: - Apache - Nginx Highload: - Haproxy - Hadoop - HBase (DB) - Varnish Messaging Systems: - RabbitMQ - Apache QPid - HornetQ Security: - Wireless security - Kernel hacking - Network security - GDB lover

    $14.44 /hr
    0 hours
    5.00
  4. Tom Jordell

    Tom Jordell

    MEAN-stack Developer & System Administrator

    Sweden - Tests: 2

    I'm a full-fledged Web Developer and System Administrator. I am currently a full-time employee as a Lead Developer and the primary System Administrator, currently managing a large scale server cluster spread across the globe with load balancing and sharding of databases. I'm very passionate about development and servers in general and there's nothing else that fuels my drive like this does. I am completely self-taught which only shows the passion I have for development and servers and I enjoy learning new things. I spend a lot of my free time developing but I also enjoy spending time with my family and friends and often find ourselves riding motocross in the wild which is another passion of mine. I believe the web is the future, everything will be ported to it. There will be no programs or apps for either desktop or mobile devices, it'll all be residing on the web and I believe it is very important we make sure that it is in good hands when we get there. Decentralizing the web with something similar to the BitTorrent protocol is what I think would be a good option. I primarily develop in Javascript, utilizing NodeJS for back-end and AngularJS for front-end, always maximizing performance and quality by bringing as much of the back-end work to the front-end which decreases server load drastically. I've also developed in PHP and been working in frameworks such as Laravel. I always write object-oriented code. I've specialized on load balancing and clustering of applications to bring the best performance possible to the user. My workflow utilizes many third-party tools to ensure I keep an organized development environment and to aid me in development and keep me up to speed. I use multiple Vagrant virtual machines to bring me a good development environment and virtualize a production environment before deploying. I use Git for version-control and have a private GitLab setup on my servers, but I enjoy using GitHub as well. I use Yeoman for project scaffolding and Grunt to minify CSS, Javascript and renaming assets to force a browser cache reload. Grunt also gives me live browser reload so I save a couple of seconds each time I update a part of my code. The applications I develop can be deployed to Heroku or any other server with a single command. All my applications are responsive and delivers maximized performance while maintaining a high security level. I've worked with tons of API's and written a couple RESTful API's myself. These include Facebook SDK, Instagram API, Twilio API, DigitalOcean API, Mailgun API and many many more.

    $30.00 /hr
    0 hours
    5.00
  5. Stanislav S.

    Stanislav S.

    Back-end Web Developer

    Russia - Tests: 2 - Portfolio: 1

    I'm a web-developer with almost 8 years experience of web-applications and mobile-app backends development on php/python. I have experience in architecture design and development of complex backend-systems, integration with third-party services and payment systems, configuring servers, project workflow and deployment, including docker.

    $20.00 /hr
    0 hours
    5.00
  6. Liridon Krasniqi

    Liridon Krasniqi

    Computer Support Specialist

    Serbia - Tests: 5 - Portfolio: 2

    Almost 15 years in providing desktop support, installing & maintaining networks and support end user of the biggest ISP and telecom industries in Kosovo • Excellent knowledge of Windows & Network Administration • Excellent knowledge of designing and building LAN, WAN, Troubleshooting end user and so on.

    $11.11 /hr
    4 hours
    5.00
  7. Boris A.

    15yr exp - Linux Systems Architect / ISP / IT Consultant

    United Kingdom - Tests: 4 - Portfolio: 2

    Having been involved in: * gathering customer's requirements (type of applications deployed) * specifying (hardware) * deploying (software and hardware installation, including in data centers) * monitoring / profiling * management * providing adequate documentation in each stage (doc/pdf/Visio) of Linux-based systems, also managing small IT teams, looking for new challenging projects. * BIND and djbdns based DNS architectures; * Qmail / Exim / Postfix-based mail systems; * Websystems to include Apache / MySQL / PHP / Perl configurations; * MySQL - single servers, Master/Slave configurations or Master/Master; * Tomcat/Resin based Java application servers; * Nagios / MRTG / Cacti monitoring and data acquisition; * Design/development and modification of Perl / PHP-based web systems; Also extensive experience in deployment and management of server configurations in data centers.

    $35.00 /hr
    14,510 hours
    4.84