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CentOS Upwork freelancers typically receive a client rating of 4.85.

Last updated: October 1, 2015
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Minh N.

Minh N.

Server Admin/Linux/Unix/AWS Ec2/ Nginx /WordPress/Magento/Odoo

Vietnam - Tests: 7 - Portfolio: 18

I have been Server Admin and Web Developer for over 10 years, I worked with many top-rated websites all over the world. I am expert with LEMP and LAMP system, very good at speeding up servers and sites. For some personal reasons, I MOVED back to Vietnam. I am also working at Elance and Freelancer. If you need references, please don't hesitate to contact me. Security Portfolio: Hall of Fame: - Linux maintaince/troubleshooting (RHEL, Centos, Debian, Ubuntu, FreeBSD, gentoo, Mac OS X Server) - Windows Maintaince / Troubletshooting (Windows Server 2003-2012, Hyper-V, Lync, SharePoint Server 2010-2013) - Virtualization: (Vmware Esxi 5.x, Openvz, Virtuozzo, Xen, KVM, Vserver) - Cloud hosting (Amazon EC2, AWS, S3, RDS, simple Cache) - Networking (dhcp, DNS:powerdns/bind/named, vpn: openvpn/pptp, firewalls: iptables/ipfw, qos, proxies, tcpdump) - Web servers (apache, nginx, lighttpd, tomcat, ssl installation and troubleshooting) - Caching ( apc/xcache/memcached/varnish/nginx) - Load Balancer (Nginx/Haproxy/Hardware LB) - Mail servers (exim, postfix, qmail, antispam/ antivirus: clamav/spamassassin/amavis, courier, dovecot) - Bulk marketing (Dkim, spf, high speed/inboxing, interspire) - Automation (puppet, perl/shell/awk scripting) - Monitoring (nagios, zabbix, munin) - Hosting Control Panels (Cpanel/WHM, Plesk, Directadmin, ISPconfig..). - Mobile Application (Android / iOS / Windows Phone)

Groups: Bluehost Developers and Designers

91% Job Success
$33.33 /hr
1,989 hours

David B.

PHP/MySQL Developer Specializing in E-Commerce Platforms

United States - Tests: 9

Over the last 10 years, I have specialized in e-commerce. I got my start working on simple osCommerce installations. Since then, I have progressed to building and working with highly-customized and integrated platforms, becoming an expert in PHP/MySQL, HTACCESS, JavaScript, AJAX, jQuery, and XML. I have also had the opportunity to work extensively with many other frameworks and API's. I have a lot of experience with Google Adwords API, credit card and shipping interfaces, and numerous other external libraries. I enjoy challenge of optimizing applications for peak performance inventing new methods for automation, streamlining back-end operations, and providing custom analytics. I pride myself on being able to jump into a project quickly and to creatively solve nagging problems. Although I do have experience with HTML and CSS, I am in no way a designer. I am strictly a coder, and, simply put, I love my work. I have worked with over 180 clients on 275+ projects. Excellent communication skills and driven work ethic. I am a perfectionist, and I am not happy until the client is happy.

Groups: Application Developers Alliance

100% Job Success
$94.44 /hr
3,706 hours

Shaukat N. Agency Contractor

Odesk ❶ Consultant | Network/System Admin | Database | Cloud Computing

Pakistan - Tests: 17 - Portfolio: 8

To start with, my background, qualifications and work experience in networking, systems engineering and security appear to be well suited to your specific requirements. I hold a Masters Degree in computing with specialization in Network Security and Databases along with that I hold certifications ranging from "MCSE-MCITP" to "RHEL" and from "CCNA" to "Juniper". I am confident that I can make a significant contribution to your company, specifically by providing excellent technical services and support to your company and clients. My achievements range from setting up and installing top-notch network solutions for various companies as a consultant to providing support for WINDOWS, UNIX based hardware/ software solutions. Further my background includes over 5+ years of Systems and Network Administration activities across a number of Offline and Online Projects along with reputed organizations. I have had extensive VMware and VCenter administration experience migrating virtual machines using both Physical to Virtual (P2V) and Virtual to Virtual (V2) strategies. This included a project team that covered over 250 migrations over an 18 month period. I have also supported and managed a large high availability Citrix environment and a high availability Microsoft SQL server 2008 cluster. In previous positions I had significant exposure to Microsoft Active Directory and LDAP environments as well as some virtualization experience using VMware and Cisco hardware along with Linux Upfront. The Cisco virtualization included administration of the Nexus 1000V virtual switches.

Associated with: Destra Soft, CyberPak Technologies

98% Job Success
$20.00 /hr
4,236 hours

Kristian C.

Kristian C. Agency Contractor

vBulletin Expert, vBulletin SEO, vBulletin Modifications and Themes

Philippines - Tests: 4 - Portfolio: 2

"WITH HUNDREDS OF SATISFIED CLIENTS AND COUNTING!" I am Kristian, vBulletin Expert since 2002. Trusted by MOST EMPLOYERS! Check my Profile Feedback. vBULLETIN SERVICES: -Installation -Upgrade and Setup -Plugins and Themes -Optimization -Custom Themes -vBSEO -Modifications -Management -Wordpress Related -Security and MORE! OTHER SKILLS: WORDPRESS / JOOMLA / CPANEL / WHM / vBULLETIN / HTML / PHP / CSS

Groups: Bluehost Developers and Designers, PHPFox

Associated with: Fox Media Agency

95% Job Success
$33.33 /hr
6,073 hours

Md mizanur R.

Md mizanur R.

Magento, Volusion, Prestashop, Opencart, Amazon, eBay Developer

Bangladesh - Tests: 10 - Portfolio: 5

Over the last 6 years, I have developed a wide range of websites using HTML & CSS, Java Script, PHP & MYSQL, CMS, , eCommerce, Joomla, Mambo, Shopping Carts , Zen Cart, Oscommerce, Magento, Opencart, Interspire Shopping Cart, Prestashop, Clipshare, Video Sharing Script, CRM, Boonex Dolphin, Social Engine, PHPFOX, vBulletin, Wordpress, Phpbb etc. including sites for start up companies and small businesses. 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. There are also a wide range of experience in Develop any kinds of website also specially eCommerce portal, Payment gateway integration. Troubleshooting any website problem and server related issue. Linux web server setup, management, maintained, migration, troubleshooting etc. Domain, Hosting maintained migration, Name server setup, Transfer etc. Office Network technical support and management network access. Setup implement and Maintains, auto predictive dialer for call center software Call list upload, Make dial plan for inbound and outbound calling, Make call speed per second, minutes, hours and any kinds troubleshooting. I also have some lots of experience include in the following areas too: SQL, Ajax, OOP, and software design and testing, Asterisk, Call Center, Call Center Configuration, CentOS, CMS, cPanel Server, CSS, E-Commerce, Elastix, Elastix Dialer, FFmpeg Server, Flash Media Server, GoAutoDial, Java, Javascript, Joomla, JSP, Linux, Magento, Marketing, Multimedia, MySQL, osCommerce, Perl_CGI, PHP, Plesk Server, Predictive Dialer, Programming, Red5 Media Server, Tomcat Server, Script Installation, Search Engine Optimization, Server Administration, Social Networking, System Administration, VicidialNOW, Visual Basic, VoIP, Website Design, WHMCS, Wordpress, Zen Cart, Open Cart,CRM.

Groups: Bluehost Developers and Designers

90% Job Success
$11.11 /hr
3,383 hours

Angga Alpa Wibowo

Angga Alpa Wibowo

Professional Desktop, Server & Networking Support

Indonesia - Tests: 5 - Portfolio: 7

I am hard worker and have objective to work with good result. I dedicated my time to work full time each week. I have 12 years work experience in Computer and Internet from 2001 starting as Technical Support. My other experience is working as tutor for IT training in my city. I also have experience as Network Support in Wireless Internet and Voip company. My last work experience as Network Engineer in Retail Company in 2011. My main duties is managing computer network, wireless network, computer hardware, router, voip and Linux/Windows server. But i also have additional task managing SQL server and MySQL databases, webserver, php, xmpp instant messaging, network surveillance system, building websites and data entry job. I also build some website and blogs as personal project during my spare time using Wordpress CMS, Associated-O-Matic and PHP language. I am familiar with Personal Hosting and VPS Hosting with Apache and NGINX webserver. I'm doing some SEO, SEM and Social Media Marketing using Facebook and Twitter for my personal projects. In additional, i have write some IT tutorial books that have been published by local publisher in my country. Professional services that i am offering are: - Computer Networking support and administration. - Windows, Linux, Unix server Administration. - Nginx, Apache and IIS webserver administration. - Ip camera setup and administration. - Wordpress setup and administration. - Desktop support and administration. - Virus removal. I have backup power source and fail-over internet connection to ensure my continuous services for my client. I am not just offering professional works for my client but i am also trying offering my best solutions.

100% Job Success
$4.00 /hr
2,482 hours

Ankur M.

Ankur M. Agency Contractor


India - Tests: 9 - Portfolio: 25

I have 8+ year experience in working on Upwork for web development and deployed more than 200 websites. I am passionate and dedicated towards my work and believe in delivering quality work even on tight deadlines. By not giving up on issues, I have developed excellent troubleshooting skills and gained a lot of experience by working on complex projects. My Skill-set includes the following: • 8+ years of experience in Web design & Development • Web design and Development Experience: PHP, CMS, Frameworks, MySQL, HTML5, Bootstrap, custom theme & plugin development. • SFDC experience:, Apex Classes & Triggers, VF Pages, Salesforce development, Customization, Integration, Data Migration and Salesforce1 • Worked on Real estate, Job portals, Ecommerce, Blogs, Corporate & Crowd funding sites and have extensive experience with these industries.

Groups: Bluehost Developers and Designers, concrete5...

Associated with: Matrix Marketers Agency

92% Job Success
$22.22 /hr
3,902 hours

Ikhlas Ahmed

Ikhlas Ahmed Agency Contractor


United States - Tests: 12 - Portfolio: 2

I have over 8 years of experience serving various clients for their website design, development, and maintenance needs. My team has following skill sets: * Design: Adobe Photoshop, Illustrator, Flash, After Effects, Premiere, Free Hand, Logo Designing * Web UI: Dreamweaver, xHTML, CSS, DIV Based HTML, DHTML, JavaScript, AJAX, jQuery * Web Development: PHP, MySQL, XML, WordPress, Joomla, Facebook Apps, OSCommerce, Cold Fusion, * Microsoft: ASP.NET, SQL Server, Reporting Services, Dot Net Nuke, nopCommerce * Apple: iPhone/iPad/iPod touch Applications development. * Linux and Windows server, database, and system administration. Linux System admin on all popular flavors including redhat, ubuntu, fedora, centos and debian. * Project Management: Through daily status reports, meetings via Skype, Screen Sharing, Emails, Phone. My customers enjoy 1 month of warranty period post implementation of their projects. I can provide verifiable customer references.

Associated with: FSD Solutions Agency

100% Job Success
$20.00 /hr
1,038 hours

Joan-Alexander Grigorov

Joan-Alexander Grigorov

OMG-Certified UML Professional

Bulgaria - Tests: 3 - Portfolio: 2

Software Engineer over here! Domain-driven design enthusiast with passion for structuring flexible OO design with PHP. Certified as UML Professional (Fundamentals) by Object Management Group on December 2013. For the last 4 years I've been actively developing web applications using Zend Framework (since July 2012 I'm Zend Framework Certified Engineer). Expert in design patterns with over 4 years of professional experience. I'm developing enterprise web applications, file sharing systems, websites, web application frameworks, etc. Achieving high quality of code, good performance and reusable object-oriented software design is my primary goal when working. I don't underestimate documentation as my source code is always well documented, with end-user manuals when needed. In the last two years I've gained rich experience with Dependency Injection and Service Locators and successfully applied those approaches my projects. I'm always ready to learn new approaches, if they could make my work quicker and easier. I have experience in educating developers. I've been teaching students PHP, Zend Framework(basic and advanced levels), MySQL, jQuery, Design Patterns and etc. I'm seeking to develop big and complex web applications using the last technologies and software development methodologies.

Groups: Zend Certified Engineers

$20.00 /hr
3,373 hours