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CentOS Job Cost Overview

Typical total cost of Upwork CentOS projects based on completed and fixed-price jobs.

Upwork CentOS Jobs Completed Quarterly

On average, 126 CentOS projects are completed every quarter on Upwork.


Time to Complete Upwork CentOS Jobs

Time needed to complete a CentOS project on Upwork.

Average CentOS Freelancer Feedback Score

CentOS Upwork freelancers typically receive a client rating of 4.85.

Last updated: October 1, 2015
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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
3,714 hours

Chandan Nagpal

Chandan Nagpal Agency Contractor

WHMCS, Drupal, OsCommerce, Magento, PHP & CakePHP

India - Tests: 19 - Portfolio: 14

Hello Potential Client, Over 5 years of experience, I have developed websites based on popular CMS for small companies but also created customized solutions from the ground for bigger ones, including big portal Websites. My Core competencies lies in: -- Os commerce -- Magento -- PHP (Zend, cake, Yii) In Addition to this I have excellent knowledge in wp and Joomla cms as well. -- I keep eye on details and deliver best work as per client's requirements. Thanks for reading my skills.

Associated with: Top at Rank Web Solutions

94% Job Success
$11.11 /hr
2,186 hours

Lee Pak

Lee Pak

LAMP developer with Design and Admin skills

Vietnam - Tests: 26 - Portfolio: 10

I have done several small tasks on Prestashop, Wordpress, Joomla, Opencart based sites revolving fix PHP - MySQL - HTML - JavaScript - CSS bug, create new or edit existing add-on, customize template for over 5 years. Beside that, I do some other small-standalone applications according to client's request. Cloud Server admin setting with CentOS and Ubuntu is my other favorite work. Willing do my best to provide high-quality service with reasonable fee.

98% Job Success
$6.00 /hr
1,056 hours

Alfonso Valdes

Alfonso Valdes

Linux / Amazon AWS / WHM WordPress / Nginx / Security / Docker DevOps

Mexico - Tests: 4 - Portfolio: 6

A self-motivated System and Network security administrator with more than 10 years in the management and analysis of Linux/Unix enterprise Servers (60- 70 servers). With deep and advance knowledge of highly scalable servers, Cloud Computing, High Performance, Hardening Servers, Migrations, Ethical hacking, Development Operations - DevOps, Open Source services and Server optimization. Lately Building WordPress hosting environments highly available and scalable in AWS/DigitalOcean/Google Compute/Azure. Certifications such as: Certified Ethical Hacker - Red Hat Certified Engineer - Cisco CCNA. Expertise in: MIGRATIONS: Wordpress/Magento/LAMP/Cpanel migrations. Helped dozens of clients migrate their web sites and applications into the AWS, Digital Ocean, Google Cloud Compute. Design and build Web Servers with HIGH PERFORMANCE (LAMP, NGINX/python, Nginx/Varnish, Nginx/php-fpm, Jboss, Apache Tomcat and Varnish) - Improve and Fix performance issues, service optimization, security issues and deployments. WORDPRESS HIGH PERFORMANCE AND TRAFFIC SITES IMPLEMENTATIONS: Improve Wordpress performance, design a cloud hosting with complex services using Wordpress, Wordpress multisite, wordpress + woocommerce, wordpress with NGINX/varnish , integration with CDN, Memcached/Redis, Amazon S3, etc etc. Build an entire HOSTING environment from design, implementation and maintenance. MALWARE removal and analysis: WordPress / Magento / Joomla Malware removal and remediation, Incident handling and Forensics analysis. BOOST and optimize websites with: NGINX, Varnish, REDIS, Amazon S3, Memcached, APC, apache tunning and mysql tunning, Amazon CloudFront and more. Amazon Cloud Computing ( AWS ) - AMAZON EC2, Amazon CDN S3, Amazon RDS, Amazon ELB, Amazon AutoScaling, Amazon VPC, CloudFront, Route53, etc. Also Management of multiple Control panels like Rackspace Cloud Computing, SoftLayer, GoDaddy, HostGator, dreamhost and MediaTemple. DevOps and Continuous integration: Docker + vagrant, Vagrant + Puppet, Puppet + Git, Docker + Ansible. Continuous integration with Jenkins, travisCI, distelli and more... Designing and deploying scalable & Highly available systems such as: Amazon Load Balancing (ELB), Hearbeat, HAProxy, Mysql cluster, Nginx Load Balancer, Apache cluster... Network and web security such as: Vulnerability Assessments, Hardening servers, security audits, Penetration testing, Virus/Malware/Threats/Vulnerabilities countermeasures, web security, fail2ban, Tripwire-AIDE-OSSEC, mod_security, mod_evasive, Denial of Services (DDOS) countermeasures, Firewalls (iptables, CSF and apf), etc. VPS: Cpanel / WHM / Plesk / DirectAdmin / Webadmin - Migrations, management, hardening, configuration, maintenance and high level of Administration. Databases Administration such as: Mysql tweaking and tunning, MongoDB, load balancing and Mysql replication (Master & Slave) for High traffic. Database: Mysql tweaking and tunning, MongoDB, ElasticSearch, Apache Solr, Sphinx, lucene, MariaDB, Postgresql replication & Pgpool, Mysql load balancing and Mysql replication (Master & Slave) for High traffic. Networking: TCP/IP high expertise, NAT, FIREWALLS, CISCO routing and switching and Packet analysis with tcpdump and wireshark. Storage solutions and Directory management: SAMBA, NFS, FTP and sftp. LVM and RAID*. SCRIPTING: Bash and python. Proficient with MAIL Servers: postfix, sendmail and Zimbra. Source control versioning: GIT and SVN. Deploying and maintaining Monitoring systems such as: nagios, ZAbbix, cacti and Jboss Operation Network (JON). Research & development (R & D) for any open source service and technology.

84% Job Success
$24.99 /hr
9,734 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
3,414 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
3,916 hours

Ahmad Samir

Ahmad Samir Agency Contractor

Cpanel/WHM/Linux Administrator/Firewall/security/Centos/Ubuntu

Egypt - Tests: 7 - Portfolio: 9

I possess 5+ years of experience in Linux server administration including installing & upgrading Apache,php,mysql and various types of open-source software also compiling and upgrading & installing kernels patches. Also I've good knowledge in installing & configuring virtual server management software ( proxmox, openvz, Ganeti). Got my B.Sc. in computer engineering and operational research, with a graduation project grade “Excellent A+” in image processing. As well as, I have managed to successfully earn a software diploma in network security , web crawling and software engineering with grade “Very Good A-”. If I can provide you with any further information on my background and qualifications, please let me know. Please note that : I do not accept any jobs related to wine/gambling/adult/.

Associated with: EGY-TECH Agency

98% Job Success
$16.67 /hr
2,537 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

Andrey M.

Andrey M. Agency Contractor

PHP Wordpress web-developer from Ukraine

Ukraine - Tests: 8 - Portfolio: 6

I'm highly-experienced web developer, who is ready to help you with your projects. My aim is to work on the projects which are both interesting and complex, as I'm the guy who likes to think and search for the best solutions. Contact me and you'll be sure that I'm the one you need.

Associated with: Smoozee

100% Job Success
$17.78 /hr
1,939 hours