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Upwork CentOS Jobs Completed Quarterly

On average, 136 CentOS projects are completed every quarter on Upwork.

136

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Average CentOS Freelancer Feedback Score

CentOS Upwork freelancers typically receive a client rating of 4.85.

4.85
Last updated: July 1, 2015
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  1. Randy B.

    Randy B.

    Systems Engineer | Cloud Computing DevOps

    Philippines - Last active: 2 days ago - Portfolio: 2

    + Professional system administrator with more than 6 years of extensive experience in *nix systems. + Experience in automated and scalable hybrid clouds like Rackspace, GoGrid, RightScale, Joyent, Linode, DigitalOcean and AWS (EC2, S3,RDS, SES, Glacier, CloudFront, CloudFormation, Elastic Beanstalk, VPC). + Competence in design, implementation, deployment, performance optimization and maintenance of high-capacity, mission-critical server infrastructure. + Knowledgeable in setting up Atlassian tools (Jira, Confluence, Bamboo, Crowd, Crucible, Fisheye and Greenhopper). + Well-versed in systems monitoring setup, configuration and customization (Zenoss, Zabbix, Nagios, Munin, Monitis and Monit). + Strong understanding of the TCP/IP protocol. + Specialities: C/C++, Python, Perl, PHP, Bash

    $22.00 /hr
    1,032 hours
    5.00
  2. Don C.

    Don C.

    AWS Cloud Infrastructure Architect/Consultant

    United Kingdom - Last active: 4 days ago - Tests: 2 - Portfolio: 4

    AWS Certified Solutions Architect (AWS-ASA-1402). AWS APN Registered Consulting Partner. An Open Source integrator, with 15+ years solid IT experience, providing cost-effective solutions to Start Ups, SMBs/SMEs and Large Enterprises. With the ever-growing Open Source community, most businesses are embracing the "freedom" to use software. Skill set includes the following: AWS (Amazon Web Services): EC2|RDS|AutoScaling|S3|CloudFront|VPC|IAM|SES|SNS|SQS|Route53 Beanstalk|CloudFormation|OpsWorks|CloudWatch|CloudSearch|Glacier LAMP/LEMP stack. Linux distros Ubuntu/Debian, CentOS/Fedora/RedHat. Apache/Nginx, MySQL, and PHP. GCE, Azure, Rackspace, Openstack, VMware, and Xen/KVM. IP Networking, Cisco, Juniper, F5 BigIP, OpenVPN, Openswan, VoIP, SIP, IPSec. Internet security, firewalls, IDS, IPS. Any OpenSource sw on top of *nix. Thanks for your time going through my profile. Looking forward to collaborate with you.

    $77.78 /hr
    212 hours
    4.90
  3. Lasantha Indika Amarasinghe

    Lasantha Indika Amarasinghe

    Linux System, Network and VOIP Engineer/Admin - more than 10 years

    Sri Lanka - Last active: 1 day ago - Tests: 4 - Portfolio: 28

    I am having more than 15 years of Linux system and network administration, VoIP deployments, system integration. My major expert areas are: >>TCP/IP networking & Security :- Advanced ip routing, forwarding, filtering and firewall with Netfilter Iptables, TCP Wappers, Fail2Ban >>Servers :- Sendmail, Postfix, Dovecot, Courier IMAP, Squirrelmail, Roud cube, BIND, Apache, Nginx, VSFTPD, DHCPD, Squid, Samba, Ziproxy(image compression proxy server), any open source or closed source software in the field >> Proxy and content Swapping : Squid forward and revers mode proxy, Nginx forward and reverse mode proxy with content Swapping(Add click, Tracking modules, Java or any script adding to the live web content) >> Control Panels :- CPanel installation and administration >>VoIP :- FreeSwtich, Asterisk based products (Bare Asterisk, Elastix, Trixbox, FreePBX or any related), secure RTP streams (SRTP) with Transport Layer Security (TLS) with or without Server Certificate, CRM integration and Dialers >>Monitoring and remote admin :- Log analyzing, Monitoring, Remote desktop, Remote Admin using tools such like Sarg, Nagios, FreeNX, SSh/Telnet >>Scripting :- Bash, PHP, Perl, Curl >>Web and Database :- SQL Server, MySQL, HTML, PHP, Java Scripts >>Inter-networking :- LAN/WAN using Cisco and DLink Routers, Managed and unmanned Switches, Structured cabling and Fiber cabling systems, >>Telecommunication :- Circuit Switching, SDH and PDH, Ip based networks, Transmission, Telecommunication network implementation and maintenance >>Virtualization:- WMWare Exsi 4/5, HyperV, VirturlBox, Zen >>Operating Systems :- Redhat or Dabian based servers such like CentOS, Ubuntu, Dabian etc,. ### My time zone : GMT +5.30 (Asia/Colombo) Pls consider this on hiring me ### Quality of work : Commit to provide 100% not a bit less than that. If I say it can be done .. definitely it is possible. If I say cant .. surely I cant do that. Welcome clients...

    $22.22 /hr
    82 hours
    4.87
  4. Vladimir Dimov

    Vladimir Dimov

    DevOps Engineer

    Bulgaria - Last active: 1 day ago - Tests: 1

    DevOps Engineer with passion for automation and adopting new technologies. Scripting skills in : Python, Bash Atlassian Products : Jira, Confluence, Stash, Bamboo Linux Administration : Arch, Gentoo, RedHat, CentOS, OpenSuSE, Ubuntu, Debian CM and various tools : Puppet, Vagrant, Packer, Fabric Virtualisation : VirtualBox, KVM , Xen, Citrix XenServer, VMware ESX Cloud Technologies : Amazon WebServices, OpenStack, Windows Azure Monitoring: Sensu, Zabbix, Cacti WebServers: Apache, nginx, tomcat, lighttpd Proxy: HAProxy, Squid Databases/Caches: MySQL, PostgreSQL, CouchDB, Redis Internet gateways and firewalls : Vyatta, PfSense Backup Solutions : BackupPC Networking - CheckPoint, Cisco, OpenVPN Telecom area - SS7 (ISUP,TCAP..), general GSM flows. Proprietary systems - Comverse, Dialogic, Comverse SMSC

    $33.33 /hr
    57 hours
    4.39
  5. Ahmed N.

    Ahmed N.

    Senior Linux Admin, Cpanel, RedHat, Ubuntu, Perl, BASH, Virtuozzo

    United Arab Emirates - Last active: 1 day ago - Tests: 10 - Portfolio: 2

    Over the last 12 years I have developed a wide range of skills and my objective is to leverage my significant technical skills in a position as Unix/Linux Administrator I have extensive experience in installing/configuring different software including but not limited to Apache, PHP, MySQL, PostgreSQL, exim, postfix, dovecot, BIND, POP/IMAP, SMTP, SSL, SSH, proFTPd, pureFTPd, iptables (APF/CSF), Kayako, WHMCS, ClientEXEC,OpenVZ,Virtuzzo,Nagios.

    $18.89 /hr
    338 hours
    5.00
  6. Anzhi L.

    Anzhi L.

    System administrator / Web services expert / Security auditor

    Russia - Last active: 4 days ago - Tests: 5

    A professional Linux/UNIX system administrator, with 8+ years of experience in web services, scripts programming, security reviews, server and database management. Experience/skills: - Operating systems: CentOS, Ubuntu, FreeBSD. - Web services (apache/nginx) setup and maintenance, speed optimizations for LAMP/LEMP stacks; - Database management (MariaDB/MySQL/PostgreSQL); - VOIP (asterisk); - Shell scripting (bash) + php/perl scripts for system purposes; - Varnish setup; - Monitoring systems (nagios, cacti); - System management tools: puppet, ansible, rpm packaging, backup utilities; - Distributed revision control systems: svn (subversion), git; - Server security reviews and hardening. Always keep my clients informed about current task progress (daily reports).

    $30.00 /hr
    86 hours
    5.00
  7. Dmitry Nedbaylo

    Dmitry Nedbaylo

    Full stack senior Pythonista

    Ukraine - Last active: 14 days ago - Tests: 4

    Hey! I am Dmitry, and I am experienced developer. Who just gets sh*t done. :) I am full stack developer with master degree in Software Development and artificial intelligence. I can advise, review your project requirements, give estimations with real deadlines, implement your project using agile approach. I can cover many project types, starting from plain websites or desktop apps, and ending with a backend with complex business logic and mobile apps (Android only). See my skills list for more information.

    $26.00 /hr
    854 hours
    5.00
  8. Iovcho Iovchev

    Iovcho Iovchev

    System Administrator

    Bulgaria - Last active: 17 days ago

    I have over 7 years experienced and broadly-skilled System Administrator (Linux and Windows Administration) . I am extremely customer service oriented and dedicated to the tasks I'm doing. Please find below some of my areas of expertise: -Control Panel ( WHM,Plesk, Webmin, Cpanel, Kloxo, ISPConfig, etc); -Email server ( Postfix, qmail,Zimbra,Dovecot,Send-mail, Exim and troubleshooting with protocols - IMAP(s) SMTP(s), POP3(s)); -Visualization (KVM, XEN, vmware, virtual-box, OpenVZ); -Malware issue fixing, Internet Security; -Server performance optimization (Apache, MySQL); -Server security (VPN, firewall, iptables); -Server Monitoring (Nagios, NRPE, MRTG, Cacti and other);

    $3.00 /hr
    0 hours
    5.00
  9. Ahmed M. Abed

    Ahmed M. Abed

    Android Developer

    Palestinian Territories - Last active: 1 month ago - Portfolio: 6

    Android application developer from 2009 (6 years experience), i have a good skills to develop any kind of applications with short time and high quality, I have Google Play account with 13 applications uploaded, Please check my Google Play account: https://play.google.com/store/apps/developer?id=amabed. Network Administrator/Network Engineering with excellent skills with Linux servers and OS. I can help you to manage your servers and network and give you some advice and tips.

    $20.00 /hr
    0 hours
    5.00
  10. Mosab Ahmad

    Mosab Ahmad

    Mosab Ahmad

    Egypt - Last active: 1 month ago - Tests: 2 - Portfolio: 2

    For the last 8 years I have been developing web applications that range from simple to very complex systems and cover many vertical industries that include but is not limited to content providers & publishers to technology startups. I have massive interest in Crowd Sourcing, Information Retrieval, Data mining, Social Networking and marketplaces. Solving problems is my dearest hobby. I have also great deal of experience in developing using PHP either from scratch or using existing systems or frameworks like Drupal, Symfony, CakePHP, Code Igniter, Zend, Wordpress etc. I have designed and developed Python applications and APIs as well, using pure Python & frameworks like Flask, Django and industry standard tools like VirtualEnv, Scrapy, SQLAlchemy, matplotlib etc. I also have experience developing for Google App Engine.

    $16.67 /hr
    0 hours
    5.00