CentOS Freelancers

Showing 39 freelancers

CentOS Freelancers

Showing 39 freelancers

  • Scala / Java / Groovy developer, Full Stack Engineer, Consultant

    Java developer with 8 years of experience. Now also Groovy(2 years) and Scala(1.5 years) developer. Java: Hadoop, Nutch , Lucene/SOLR/ElasticSearch, Morphia(MongoDB ORM), parsers/crawlers(using Apache Httpclient, HtmlUnit and own microframework), Web MVC(Struts 1 … more

    Java developer with 8 years of experience. Now also Groovy(2 years) and Scala(1.5 years) developer. Java: Hadoop, Nutch , Lucene/SOLR/ElasticSearch, Morphia(MongoDB ORM), parsers/crawlers(using Apache Httpclient, HtmlUnit and own microframework), Web MVC(Struts 1.x/Grails), Java Desktop Applicatins(Swing) / Applets, webservices (w. Restlet framework), RabbitMQ Java client, Riak Java Client Scala: PlayFramework 2.x, Lift, Akka, ReactiveMongo Groovy: Groovy scripts / Gant build scripts / Gradle Databases: SQL(PostgreSQL/MySQL), MongoDB, Riak, SOLR/ElasticSearch PHP scripts, linux(fedora/centos/ubuntu) server administration, SVN / Git, SEO methods/scripts, affiliate marketing. Check my blog(chepurnoy.org)/GitHub(kushti) also.  less

    java groovy mongodb mysql apahce-nutch apache-solr postgresql grails hibernate crawlers data-scraping web-scraping scala play-framework jquery gradle maven apache-ant ubuntu centos nginx web-crawler 00 more less
    • $55.56 HOURLY RATE
    • 4.8
    • 1026 HOURS
    • RUSSIA
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 2 TESTS
  • Linux Administrator/cpanel/WHM/Firewall/security/Centos/Ubuntu/WP

    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 … more

    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 (Ganeti , proxmox, openvz). Got my BSC in computer engineering and communications with project grade 'Excellent' in image processing and am currently studying for masters in network security. 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 or gambling or adult.  less

    cpanel whm linux-system-administration centos ubuntu mysql virtualization openvz windows-administration virus-removal python 00 more less
    • $16.67 HOURLY RATE
    • 4.9
    • 1467 HOURS
    • EGYPT
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 7 TESTS
    ASSOCIATED WITH:
  • Linux system administrator

    I have great experience in * Linux maintenance (RHEL, Debian, Ubuntu) * Virtualization: (Vmware, Openvz, Virtuozzo, Xen, KVM), * Cloud hosting (Amazon EC2, AWS, S3), * Networking (dhcp, DNS:powerdns/bind/named, vpn: openvpn/pptp, firewalls: iptables/ipfw, qos, proxies), * Web servers (apache, nginx … more

    I have great experience in * Linux maintenance (RHEL, Debian, Ubuntu) * Virtualization: (Vmware, Openvz, Virtuozzo, Xen, KVM), * Cloud hosting (Amazon EC2, AWS, S3), * Networking (dhcp, DNS:powerdns/bind/named, vpn: openvpn/pptp, firewalls: iptables/ipfw, qos, proxies), * Web servers (apache, nginx, lighttpd, tomcat), * 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), * Hosting panels (Cpanel/WHM, Plesk, Directadmin). Java, J2EE, Maven, JUnit(DTDUnit, JMock, StrutsTestCase, DBUnit), apache commons, SQL (pl-sql/MySQL/ORACLE/MS SQL), HTML, JS, AJAX, CSS, Spring, Struts, Tiles, ORM/Hibernate, XML, XSLT, Jasper, Ant, JMeter  less

    linux-system-administration lamp-administration mail-server-implementation network-administration mysql apache-administration virtualization amazon-ec2 amazon-web-services amazon-s3 unix-shell nagios bash openvpn security squid subversion iptables dhcp exim centos plesk ubuntu cpanel whm nginx postfix rhel 00 more less
    • $27.78 HOURLY RATE
    • 4.8
    • 1241 HOURS
    • BELARUS
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 11 TESTS
    GROUPS:
    ASSOCIATED WITH:
  • System Administrator/Scripts Write/Cloud Expert/Security Consultant

    Hi there, I am a 30 years certified System Administrator you wish getting help from : I am an LPI(101 & 102),RHCE certified, Automation king!! I have rich experiences in a wide range of software and systems over the last … more

    Hi there, I am a 30 years certified System Administrator you wish getting help from : I am an LPI(101 & 102),RHCE certified, Automation king!! I have rich experiences in a wide range of software and systems over the last 15 years, the most notable skills are : 1-Linux System Administartion : I have installed, configured, repaired, and managed so many Linux systems (more than I can remember) since 2006. I started with Fedora, then centos and ubuntu. 2- Scripting (My Favorite!) : I do enjoy very much with scripting especially for automation purposes, and I am very experinced with it, on both linux (bash) and windows (autoit - batch). I can automate all the tasks even those that don't talk to the command line in windows. I made for example in past, a fully unattended Windows installation CDs that is fully customized to include all the software my customers need without asking single question ! and on Linux I use Bash scripting Language to handle almost every aspect of linux and I did wrote so many scripts for various tasks. 3- Hosting Services : I have installed and managed previously many control panels for hosting and administration, that includes Cpanel, Plesk, ISPconfig, Webmin, Usermin, AWS, DigitalOcean, rackspace, cloud providers and more ! and in addition to that I can run the hosting services directly myself with no need for a control panel. I managed standalone software like : Apache, MySQL Server, ws-ftpd, proftpd, lighttpd with fast cgi, thttpd, dovecot, postfix and other servers ! I can also build/manage any hosting services, including shared hosting, VPS and dedicated servers. 4- VPN Services: I have installed and configured many servers that provided VPN services, including PPTP and OpenVPN services. I have even created a custom control panel for the customers and link it with automation scripts I wrote to better help the client managing his customers. (see the following picture): http://img687.imageshack.us/i/screenshotrsl.png/ And besides I am the solo developer of vpnplatform (vpnplatform.org/team) ;) and my clients consider me the best VPN guy on odesk. 5- Figting Malware: I can get your windows box clean even from the hidden malware and spyware trojans. I can secure your box and keep it safe and protected. I have fought malware since 2001 achieving great results like : cleaning big networks from viruses and worms and keeping it up and running in hostile environments for months with almost no downtime ! Also, I've built an app I called (Automated Malware Wizard), that would backup clinets hard drives and then GUARANTEE the cleaning of them, then update their software to close any possible vulnarables. I can customize it to you to fit your needs (If you intend to run a malware-cleaning and maintainance firm/utility). 6-Networking : I've been an ISP CEO before, and delivered internet services for more than 200 local subscriber when I worked at Hamad ISP. 7- VOIP: I am familiar with Asterisk and Asterisk GUI Installations, from scratch to fully working installation ! 8-Virtualizaion : I am very good with VMware and VirtualBox, I used them for years as a combination with hosting services. 9-Managing Mailing lists : I can manage your Email lists and make it away from SPAM lists by playing fair and square, I managed lists before, some of them got thousands of subscribers, I can clean the list also of all invalid/outdated subscribes by catching all email bounces using (my experience was with phplist script). 10- PHP/MySQL : I can develop web pages using a mixture of several technologies including html/css/php/mysql/javascript. And Finally, I can perfectly read, write and talk English Language and you can contact me over email, sms or mobile ! I perfectly speak English Language. I am ready to move to your job location if needed. I respect my work and give it every effort I can while keeping job's secrets secured and not to be shared with any 3rd party. You may see my attached C.V. and my odesk profile at: https://www.odesk.com/users/~~9b6150fc1d75d477 Note: I can adjust my availability time to suite your needs. Best wishes Ahmad  less

    openvpn virtualization virus-removal technical-support network-administration ubuntu centos winautomation-scripting autoit asterisk bash security vpn arabic translation-english-arabic translation-arabic-english mail-server-implementation sendmail email-technical-support linux-system-administration computer-maintenance dns vmware-administration squid php mysql jquery css html java paypal-api network-security adobe-dreamweaver bash-shell-scripting wireless-security 00 more less
    • $20.00 HOURLY RATE
    • 5.0
    • 1095 HOURS
    • PALESTINIAN TERRITORIES
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 6 TESTS
    ASSOCIATED WITH:
  • System Administrator, SaaS Engineer

    Senior level System Administrator and experienced SaaS Engineer, I provide three types of development services to my customers: a. Custom tailored solutions, built to meet the client's needs and specifications b. Deployment of pre-existing software solutions and further development … more

    Senior level System Administrator and experienced SaaS Engineer, I provide three types of development services to my customers: a. Custom tailored solutions, built to meet the client's needs and specifications b. Deployment of pre-existing software solutions and further development and/or optimization. c. Migration solutions for clients wanting to switch platforms or hosting environments. I provide analysis and SaaS architectural design as well as core development of RESTful services. Moreover I am an expert in Apache and Nginx fine-tuning and administration. I can demonstrate vast experience in production-level deployment of Wowza, Red5 and Pseudostreaming video and audio streaming servers. Senior level of Database Administration and Design in MySQL and MariaDB. Excellent knowledge of AWS platform ( EC2, S3, RDS, Glacier. Cloudfont and lately DevOPS) Some of the technologies/frameworks I use: 1. PHP / Yii / CodeIgniter / CakePHP / Zend 2. Javascript / JQuery Library 3. Ruby on Rails 4. Perl 5. Python / Django 7. HTML/CSS 8. C++ / Qt 9. Web Services (REST / SOAP / WSDL) 10. XML / XSL / XSLT Database Engines: 1. MySQL v4+ (& MariaDB) 2. MSSQL 3. Oracle RDBMS 4. Postgres/SQL 5. noSQL Well-known APIs such as: Paypal API, Facebook, Twitter, Amazon API. Payment Provider APIs: Paypal, Paxum, Payoneer, Webmoney, Redpass, Neteller, Authorize.net, Stripe Special tools: FFMPEG, x264, libfaac, ImageMagick. --  less

    lamp-administration apache-administration mysql php python amazon-web-services linux-system-administration amazon-ec2 amazon-s3 rackspace-cloudservers redhat-administration centos memcached nginx varnish-cache puppet-administration penetration-testing javascript jquery mail-server-implementation dns svn git api-development video-streaming red5 wowza-media-server c++ ruby-on-rails yii-framework wordpress 00 more less
    • $39.00 HOURLY RATE
    • 5.0
    • 2493 HOURS
    • GREECE
    • LAST ACTIVE
    • 3 PORTFOLIO ITEMS
    • 10 TESTS
    GROUPS:
    ASSOCIATED WITH:
  • Ruby on Rails developer

    Use Ruby for web development (6+ years, Ruby on Rails), command line tools/scripting. Do understand/use advanced Ruby features (metaprogramming, functional programming). Able to implement ordinary SQL based server side (MySQL, Postgres) as well as NoSQL based solutions (MongoDB … more

    Use Ruby for web development (6+ years, Ruby on Rails), command line tools/scripting. Do understand/use advanced Ruby features (metaprogramming, functional programming). Able to implement ordinary SQL based server side (MySQL, Postgres) as well as NoSQL based solutions (MongoDB) Use JavaScript/CoffeeScript/jQuery/Backbone.js for web frontend. See Node.js as next web platform Use Linux(Ubuntu, RHEL, CentOS) for development and web servers deployment. Software development with C++ (10+ years of experience) for Windows/Linux. Cross-platform development with Qt framework.  less

    ruby ruby-on-rails coffeescript javascript jquery backbone-js mongodb mysql git jquery-mobile google-maps-api c++ qt centos moodle 00 more less
    • $40.00 HOURLY RATE
    • 5.0
    • 2104 HOURS
    • RUSSIA
    • LAST ACTIVE
    • 12 PORTFOLIO ITEMS
    • 3 TESTS
  • Network Engineer, Security Specialist, System Admin and DB Admin

    I have over 12 years of experience. Always with 'Can Do' attitude. When it comes to my expert areas of IT, I'm capable of accomplishing anything. I'm also a fast learner. Network Engineer: -With Cisco CCNP R&S … more

    I have over 12 years of experience. Always with 'Can Do' attitude. When it comes to my expert areas of IT, I'm capable of accomplishing anything. I'm also a fast learner. Network Engineer: -With Cisco CCNP R&S and Working towards CCNP Security. Experience on Configuring, Troubleshooting and Optimizing Routers, Switches (L2/L3), ASA Devices, Load Balancers, PIX Firewalls etc. etc. Security Specialist: -Certified Ethical Hacker (C|EH) and working towards Computer Hacking Forensic Investigator (C|HFI) I have done a lot of projects as a Security Consultant. Having experience in conducting Vulnerability Assessments, Penetration Testing and also I have done Server/ Network Hardening against threats, Designing, Implementation and Maintenance of security policies, Conducting Forensic Investigations etc. etc. System Administrator: - Windows Administration experience of mine goes back to Windows NT 4. Since then I have been Implementing, Administrating & Troubleshooting Windows Servers. Have MCSA Certification for latest Windows 2012 and working towards MCSE. - I have experience in HP-UX, Red Hat RHEL5/6 CentOS5/6 administration. Database Administration: - Implementing, Administrating & Troubleshooting Microsoft SQL Server 2008/2012. I have started DBA tasks on SQL server 6.5. - Experience on DBA tasks on Oracle 8i, 9i, 10g and 11g. - Experience on DBA tasks on MySQL 5.0/5.5.  less

    windows-administration linux-system-administration firewalls mysql vpn cisco-ios network-administration network-security network-planning vulnerability-assessment penetration-testing python ruby cisco-routers wan plesk cpanel solaris-administration unix-system-administration android-app-development delphi amazon-ec2 clustering vmware-administration database-administration centos c# microsoft-visual-c++ java cisco-asa email-handling microsoft-excel computer-networking microsoft-word windows-xp-administration cisco-pix cisco-voip perl zendesk atlassian-jira atlassian-confluence wireless-security 00 more less
    • $25.00 HOURLY RATE
    • 5.0
    • 11427 HOURS
    • SRI LANKA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 15 TESTS
    ASSOCIATED WITH:
  • Professional Server Help (Linux Administrator)

    Melbourne based System Administrator with expertise in Linux Server optimization, security and service deployment on VPS/Physical, Cloud Platforms(AWS,Rackspace). I believe in getting the job done with the best possible quality. Period. Clear timely communication with the clients … more

    Melbourne based System Administrator with expertise in Linux Server optimization, security and service deployment on VPS/Physical, Cloud Platforms(AWS,Rackspace). I believe in getting the job done with the best possible quality. Period. Clear timely communication with the clients and their team is always my priority. I have been working with all the major providers: Rackspace, Amazon, Softlayer, Godaddy, Hostgator, Bluehost, Linode, DreamHost, Mediatemple, Lunarpages. Expertise in Linux Administration is as follows (but not limted to) Server Distributions: RedHat, Centos, Fedora, Debian, Ubuntu, Gentoo, Suse, Mandriva, Opensuse, Knoppix, Slackware. Web servers: Apache, Lighttpd, Nginx, Tomcat File servers: Proftpd, Pureftpd, Vsftpd, Sftpd, TFTP, NFS, Samba DNS servers: Bind9, MyDNS, NSD Mail servers: Postfix(TLS,SASL), Exim, Sendmail, Qmail, Dovecot, Courier. Logging services: Syslog, Rsyslog, Syslog-ng Proxy servers: Squid(forward and reverse proxy), nginx, pound, lighttpd. Firewalls: Iptable scripts and Advance Policies Firewall with bruteforce detection. Firewall configuration: NAT, IP Masquerade Jabber servers: Openfire, Ejabberd, Djabberd Database servers: MySQL, Postgresql Backup: Bacula, bash scripts. VPN: PPTP Virtualisation: Openvz/Virtuozzo, Xen, Qemu, KVM, VMware Server, Parallels Workstation, Virtualbox headless, HyperVM. Monitoring: Nagios, munin, zabbix, zenoss Automation: Puppet(fan), custom bash scripts. Revision control: Git(fan), Subversion Package management: yum, rpm, dpkg, aptitude, apt-get, emerge Security: Nessus, John The Ripper, Tiger, PGP, GPG, nmap, Openvas, Snort, Ettercap, arpwatch, SSH, SSL, TLS, TCP Wrappers, Ethereal, dsniff, tcpdump, portsentry, rkhunter, chkrootkit, clamav, SPF, Spamassassin, domain keys. Cloud computing: Amazon (EC2, EBS, S3, CloudWatch), Rackspace services. Assessment tools: sar, vmstat, iostat, mpstat, netstat, iptraf, iftop, lsof, ntop, serverstats Misc services: NTP, Cups, DHCP, Dnsmasq  less

    lamp-administration apache-administration linux-system-administration postfix whm iis unix-shell mysql vpn nagios munin ftp cpanel plesk nginx postgresql lighttpd subversion puppet-administration ssh iptables drupal wordpress domain-migration mail-server-implementation openvz virtualization redmine amazon-ec2 amazon-web-services amazon-s3 rackspace-cloudservers virtuoso bash exim firewalls ssl centos ubuntu security email-deliverability-consulting mailenable ffmpeg atlassian-jira python rhel 00 more less
    • $50.00 HOURLY RATE
    • 5.0
    • 1318 HOURS
    • AUSTRALIA
    • LAST ACTIVE
    • 3 PORTFOLIO ITEMS
    • 1 TEST
    ASSOCIATED WITH:
  • Wordpress Sensei

    Fluent in the art of all things Wordpress... In depth knowledge of Wordpress development and design best practices gained due to considerable experience in working on complex wordpress projects on a continuous basis. Hands on experience in modifying and enhancing … more

    Fluent in the art of all things Wordpress... In depth knowledge of Wordpress development and design best practices gained due to considerable experience in working on complex wordpress projects on a continuous basis. Hands on experience in modifying and enhancing several popular Wordpress plugins. In depth knowledge of front end development and wordpress theming frameworks. Last but not least considerable attention to detail coupled with strong communication skills.  less

    php html wordpress javascript codeigniter ios-development buddypress centos twitter-bootstrap css3 html5 00 more less
    • $30.00 HOURLY RATE
    • 5.0
    • 1818 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 1 TEST
    ASSOCIATED WITH:
  • Senior Linux Administrator / Asterisk / VoIP / cPanel / Perl / BASH

    I am a senior technical engineer who has 15 years IT experience in the following areas: Advanced Linux Cluster Administration Advanced Knowledge of shell scripting Network Administration Network Security (Penetration Testing) Server Auditing Technical Support Virtualization (mainly Parallels Virtuozzo/openVZ … more

    I am a senior technical engineer who has 15 years IT experience in the following areas: Advanced Linux Cluster Administration Advanced Knowledge of shell scripting Network Administration Network Security (Penetration Testing) Server Auditing Technical Support Virtualization (mainly Parallels Virtuozzo/openVZ/ProxMox) Web hosting Control panels such as cPanel,Plesk,DirectAdmin Tweaking and Optimizing Apache for better performance Hardening PHP Data recovery Asterisk/Trixbox/Elastix/VoIP solutions.  less

    linux-system-administration asterisk mysql cpanel whm centos samba apache-administration perl security nagios bash freepbx trixbox 00 more less
    • $44.44 HOURLY RATE
    • 5.0
    • 5275 HOURS
    • EGYPT
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 7 TESTS
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