IT & Networking Administrators

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  1. Daniel Yavorovich

    Daniel Yavorovich

    System Administrator

    Ukraine - Last active: 1 month ago - Portfolio: 1

    Operating Systems ● FreeBSD ● Linux Security ● iptables ● openssl ● jail ● clamav ● mod_security ● mod_clamav DNS ● Bind ● PowerDNS (+PostgreSQL / +MySQL) HTTP ● Apache ○ MPM: prefork, worker ○ mod_ssl, mod_php, mod_wsgi ● Nginx ○ Access control ○ Autoindex ○ Fast-CGI ○ uWSGI ○ Proxy ○ Cache ○ SSL ○ upload_progress_module ○ Control panel integration ■ Virtualmin ■ DirectAdmin ■ Plesk Proxy ● squid ○ basic auth ○ transparent proxy ○ cache ● 3proxy ○ http/socks ○ auth Raid ● Linux ○ md(0,1,5,6,10) ● FreeBSD ○ Gmirror / Striping File Systems: ● Ext 2,3,4 ● ReiserFS ● XFS ● OCFS2 ● ZFS (port to FreeBSD) ● CEPH CVS ● SVN ● Mercurial ● GIT ○ GitLab ○ GitoLite Backup ● rsync ● BackupPC ● Bacula FTP ● ProFTPd ● VSFTPD File sharing ● NFS ● SAMBA Control Panel ● Direct Admin ● Webmin+Virtualmin ● CPanel ● ISP-config ● Plesk Automatization ● Puppet ● Saltstack Monitoring ● Zabbix ● Nagios ● Munin ● Monit Network Understanding of theoretical and practical foundations of the networks (Data link, Network, Transport, Application Layers). VPN ● OpenVPN ● PPTP Database (SQL) ● MySQL (+MariaDB, +Percona) ● PostgreSQL Database (NoSQL) ● ElasticSearch ● Riak ● MongoDB ● Cassandra ● Redis Virtualization & Containerization ● KVM ● XEN ● OpenVZ ● LXC ● Docker ● Vagrant Cluster ● DRBD ○ master-slave ○ master-master (+ocfs2) ● Heartbeat ● Pacemaker Development ● actively use: ○ shell (bash, sh) ○ Python ● Frameworks ○ Django ○ Flask ○ Twisted ○ Tornado Cloud Solutions: ● AWS (EC2, S3, CloudFront, Route53) ● DigitalOcean ● RackSpace

    $33.33 /hr
    36 hours
    5.00
  2. Manuel Adelin Manolache

    Manuel Adelin Manolache

    Consulting Analyst - Application Architect - Project Manager PHP,JS

    Romania - Last active: 1 day ago - Tests: 5 - Portfolio: 5

    I graduated in Computer Science at Polytechnic University of Bucharest, Romania. I also have a masters degree in Advanced Computer Architectures. In 2012 I started my PhD. I have been working as a freelancer for 7 years now but I also had some regular jobs in the past as a software developer at some well known companies but decided to quit so I can only focus on freelance projects. I have experience with most programming languages, from C, C#, Java, C++ to Python, PHP, SQL, Javascript, Haskel, Clips. In the recent years I've mostly programmed PHP, Javascript and custom web applications. Frameworks I've worked with: Zend Framework, CodeIgniter, Django, Drupal, Wordpress, jQuery, Bootstrap, and any other PHP popular framework. I have two partners I work with on all projects, Mihail - developer and Petru - artist. I also have a lot of finished projects, websites I can show on request. Work Policy: * I try to deliver the best quality possible, but this is often a trade-off between time, budget, and the specific project situation. (For example, not all clients would want the time/money investment in creating a full unit test suite). I usually suggest a LAMP stack using either PHP or Python. * I'll be honest. For example, I like giving suggestions on how to save time/money even if that means less billed hours for me. I only work on hourly projects. Thanks!

    Groups: Bluehost Developers and Designers

    $69.00 /hr
    4,898 hours
    5.00
  3. Ioannis F.

    Ioannis F.

    Java Software Engineer

    Greece - Last active: 1 day ago - Tests: 4

    Senior Software Engineer. During the last 11 years I have worked on developing a large number of different applications and/or components, including web applications, CMS, RESTful APIs and server-side components for mobile applications and mobile marketing. Core technologies and frameworks involved were Java, Spring/Spring MVC, Jersey, JPA & Hibernate, JSP, XML, HTML, CSS and a range of JavaScript libraries and frameworks. I have extensively used a large number of software engineering tools, including Maven, Ant, Nexus, Hudson, Bamboo Subversion, Git. I'm eager to use new and fascinating technologies for development of state-of-the-art applications.

    $45.00 /hr
    4,020 hours
    5.00
  4. Simon Weingand

    Simon Weingand

    Senior iOS and Android and Back-end Developer

    Germany - Last active: 1 day ago - Tests: 15 - Portfolio: 2

    Thanks for reviewing my profile As a creative and passionate professional programmer with 10+ years of experience. Major skills: - iOS, Android, Phonegap/Cordova(jQueryMobile, SenchaTouch, Ionic) - Objective-C, Swift, C/C++, Java, - PHP/MySql, Ruby on Rails, AngularJS, Node.js, Javascript, HTML, CSS, jQuery - Parse.com, Amazon, Heroku, MongoDB, RESTful API, AJAX, JSON/XML, RSS - Facebook, Twitter, Instagram, Google+, VK, Foursquare - Paypal, Stripe, In-app purchase - Google App Engine, Google Map Api, Google Drive, GPS, BLE, NFC, iBeacon, VOIP - Git, Bitbucket, Testflight

    $49.00 /hr
    1,098 hours
    5.00
  5. Sergiy R.

    Sergiy R.

    Linux System Administrator

    Ukraine - Last active: 2 days ago - Tests: 9 - Portfolio: 1

    I am an experienced System Administrator with a wide range of skills, including Linux servers administration, LAMP stack setup, OpenVZ and KVM virtualization, configuring services, working with version control systems and writing system maintenance scripts. I have a hands-on experience with Linux, including Ubuntu, CentOS, Red Hat, Gentoo and Debian distributions. I am able to code in OCaml, C, C++, Ruby (including Ruby on Rails), Bash/Zsh and read Java, Python, Haskell, Perl and Common Lisp programs. My most important virtues are: extreme responsibility, easy communication and attention to details.

    $40.00 /hr
    459 hours
    5.00
  6. Nasrajan J.

    Nasrajan J.

    PHP Expert , Project Management Consultant

    India - Last active: 14 days ago - Tests: 10 - Portfolio: 13

    I am Zend Certified PHP 5 Engineer. Over the last 12 years, I have developed and administered websites using LAMP technologies and tools including - xHTML, HTML5, JavaScript, CSS, Ajax, MySQL, PostgreSQL in platforms like UNIX, Linux and Mac OS X. I am passionate about open source and am familiar with a large number of open source software and technologies. My core competency lies in understanding the goals of the website in detail and converting it to a full- fledged cost-effective product with faster turn-around time. I also have the following skill sets. Expert in Search Engine Optimization. Strong in Object-Oriented Analysis, Design & Programming and technical documentation in Unified Modeling Language (UML). Strong Linux system administration skills, especially LAMP administration and troubleshooting. Experience working in agile environment. Strong project management skills and leadership abilities.

    Groups: Zend Certified Engineers

    $30.00 /hr
    3,769 hours
    5.00
  7. Tuhin Bhuiyan

    Tuhin Bhuiyan

    Web Developer (Exp.6yrs.) PHP, WordPress, MySQL, AJAX, jQuery

    Bangladesh - Last active: 1 day ago - Tests: 8 - Portfolio: 1

    I am a web Developer & Designer specializing in Wordpress, Front-End, Back-End Development. I have extensive experience in various types of website design and development which includes: e-commerce websites, community websites, corporate websites, non-profit organization websites as well as personal websites. Php and WordPress is my most favorite development area. My Major expertise is- √ WordPress √ PHP and MySQL √ JavaScript √ HTML5 and CSS 3 √ PSD to HTML & WordPress. √ WordPress theme customization √ WordPress Plugins/widgets customization, √ eCommerce √ Membership √ Knowledgeable in social media/online marketing √ Well-versed in Search Engine Optimization practices & techniques √ Skillful with Adobe Photoshop, Fireworks & Illustrator. I promise Quality work and compliant code. Motivated by variety and stimulating projects. All work undertaken with care and pride. ** I'm usually working 40+ hours per week at home. I am available to work under any timezone if client's required. ** I'm available on Skype 12+hours per day and check my mailbox every 10 minutes that means you can spot me any time. Over the last 6 years, I have developed a wide range of websites using Php + MySql + Payment Gateways +WordPress + eCommerce + HTML + DHTML + Web design + Templates Design and development + Psd to Html + Table less design + wc3 valid + JavaScript + JQuery + Ajax and now also using HTML5 and successfully delivered quality of hundred projects to our small & large delighted clients. I'm always looking for new challenges and new people to meet. Thank you for reading out my profile!

    $40.00 /hr
    76 hours
    5.00
  8. Willie Price

    Willie Price

    IT Networking/System Admin Professional

    United States - Last active: 23 days ago - Tests: 5

    To obtain projects that would allow me to utilize my extensive networking skills and be a very vital asset to a Buyer. Also to develop an ongoing professional relationship to provide the best support needed by the buyer.

    $26.11 /hr
    1,246 hours
    4.99
  9. Alexander F.

    Alexander F.

    Software developer

    Russia - Last active: 3 days ago - Tests: 6

    I like writing programs which make life easier. Given a lot of similar files or a few gigabytes of data, to write a little Perl script to parse them all in seconds is a kind of task I really enjoy doing. While being my favorite programming language, Perl is, of course, not the only one I know. Just like any person pretending to be a good software engineer I can (and like to) write in C, and I used to write some code in C++ (need to say here that I don't like the style of coding when the whole program consists of definitions of various small classes and overloading various methods). I understand and like functional programming (e.g. Lisp and Haskell), and I like using map, reduce and filter concepts in other languages. I'm not a web programmer, that means that I won't apply for any PHP job or, in general, for a job requiring to create web sites. But I used to develop simple web services (Perl CGI scripts, small sites in PHP) and I understand how HTTP works. That means that I can act both as a web browser using telnet and as a web server using netcat and I don't panic when I see Internal Server Error. The last web-related thing I looked at was Node.js; I liked the idea and wrote a few hundred lines of code to see how it works. Just to list some more technologies: I used to create TCP/IP client and server programs in C and Perl both in Linux and Windows; I spent a few evenings developing a compiler and virtual machine for myself just to understand how all this stuff works; I know how to work with databases (just to list some: MySQL, MSSQL, PostgreSQL, SQLite), SQL queries, and stored procedures. I was a member of the ACM team of Novosibirsk university (our best result was to reach world semi-finals) and I spent nine years teaching students how to write programs so I understand most of the 'standard' algorithms: searching and sorting, graphs problems, etc., and can explain them if needed.

    $33.33 /hr
    1 hours
    4.98
  10. Ahmed AbdElmaqsoud

    Ahmed AbdElmaqsoud

    Linux System Administrator, Streaming Expert

    Egypt - Last active: 25 days ago - Portfolio: 2

    I am experienced in: • Linux Server Management. • PHP Web Development. • Search Engines’ Optimization (SEO). Personal Statement: I am a self-motivated character, ambitious, hard worker and time manager. Personal Skills: · Good communication skills. · Able to work accurately and neatly. · Good organizational skills. · Able to work with minimum supervision. · Able to communicate information accurately. · Can work under pressure and meet deadlines.

    $35.00 /hr
    0 hours
    4.98