Server Administrators & Developers

Showing 7,689 freelancers

Server Administrators & Developers

Showing 7,689 freelancers

  • Linux/UNIX systems expert

    I'm a Bachelor of Science in Information Technology, experienced, highly qualified, polite, motivated and efficient contractor. I have many industry level certifications, great analytic skills and a proactive personality. I've got 7+ years of experience in: - designing, installing … more

    I'm a Bachelor of Science in Information Technology, experienced, highly qualified, polite, motivated and efficient contractor. I have many industry level certifications, great analytic skills and a proactive personality. I've got 7+ years of experience in: - designing, installing and troubleshooting every kinds of Linux (Red Hat, CentOS, Ubuntu, Debian, SUSE, Gentoo, etc) - webservers: Apache, Lighty, nginx - database servers: MySQL, Informix, DB2 - proxy servers: Varnish, Squid - scripting in bash, PHP and SQL - fine tuning Linux / UNIX systems and applications - real hands-on operation with brand server machines - working in multinational and multiclient environment - managing legacy UNIX (SCO OpenServer and SCO UnixWare) systems - heterogeneous enterprise systems (eg. Samba on Linux with Windows Active Directory servers, etc)  less

    linux-system-administration unix-system-administration rhel opensuse ubuntu apache-administration php mysql windows-administration bash informix postfix ibm-db2 hardware-troubleshooting lighttpd ibm-xseries ftp git wordpress phpmyadmin centos lamp-administration wamp ssh cpanel smtp apache-tomcat vmware-administration vmware-esx rackspace-cloudservers boonex-dolphin amazon-ec2 dns openvpn varnish-cache squid nagios database-administration domain-migration performance-tuning performance-testing 00 more less
    • $21.99 HOURLY RATE
    • 5.0
    • 2132 HOURS
    • HUNGARY
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 10 TESTS
    GROUPS:
  • System Administrator/Infrastructure engeneer

    5+ years of experience with all types of day-to-day web hosting administration including LAMP, Apache Tomcat, MS Windows Server 2000, 2003, 2008, MSSQL, IIS, ASP.NET. Basic programming skills in PHP, Python, Perl, ASP, ASP.NET. Strong knowledge of control … more

    5+ years of experience with all types of day-to-day web hosting administration including LAMP, Apache Tomcat, MS Windows Server 2000, 2003, 2008, MSSQL, IIS, ASP.NET. Basic programming skills in PHP, Python, Perl, ASP, ASP.NET. Strong knowledge of control panels Plesk, CPanel, Virtuozzo. Backup solutions built from ground up. Custom solutions like Tomcat HA clusters. Fast problem identification and solving  less

    lamp-administration linux-system-administration windows-administration virtualization security cpanel plesk mail-server-implementation apache-tomcat mysql sql virtuoso apache-administration lighttpd iis nginx 00 more less
    • $22.22 HOURLY RATE
    • 5.0
    • 38 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 4 TESTS
  • Expert Linux, Unix sysadmin,devops

    Hello, I am an experienced programmer & system Administrator with expertise in high performance system infrastructure, customized deployment solutions, configuration management, monitoring, python , Django development, REST based backend systems and related infrastructure support. I am in process of becoming Official Amazon … more

    Hello, I am an experienced programmer & system Administrator with expertise in high performance system infrastructure, customized deployment solutions, configuration management, monitoring, python , Django development, REST based backend systems and related infrastructure support. I am in process of becoming Official Amazon Provider Network Member - Consulting Partner [https://aws.amazon.com/partners/overview/consulting-partner/]. Highlights: 1. Created an infrastructure with over 4000 servers (physical as well as cloud servers aws, rackspace and go grid) distributed in 4 regions , implemented monitoring, ha, replication, configuration management. Recruited a team of 3 sys admin's , trained them and supported platform 24/7 with 3 engineers. 2. Have worked with several technologies and scaled it for high volume with massive cost savings. 3. Created a unified platform to interact with multiple public clouds. ( aws, go grid , rackspace with custom python based system) 4. Designed a geo-distributed, full tolerant with a SLA of 99.99999 deployment and deployed it using Amazon Cloud, Rackspace Cloud,gofrid cloud and on physical servers 5. Designed a scalable storage system using open source and commodity hardware. I have managed large (4000+) servers for my employers and clients, which include GE, Wipro, Lehman Brothers & Glam Media. I have managed IT security for GE and banking sectors (built a DC and developer shop for Lehman brothers in china). I now offer remote system management consultancy and training services. I have attached my linked in profile and references if you need them. I have designed, developed and maintained large scaling, load-balanced and redundant infrastructure for many clients. Most of the infrastructure I have designed are, • fully automated (saltstack/puppet and deployment via various code deployment tools integrated with git or subversion) • auto-scale (on demand scaling) • auto-heal and auto curate • fully load-balanced • in required cases geo-distributed • Monitored with custom performance plugins, logstash, nagios, check_mk, zenoss This infrastructure architecture and deployments were in different environments • Dedicated servers at various isps • Virtualized Environment (Xen, KVM, VMware and others) • Public cloud: Amazon, Rackspace, GoGrid, and others • Private Cloud:= openstack • Different Business Verticals, • Ecommerce • Social Application (www.ning.com ) • Big Data Analysis and Analytics • Media (audio and video) • Online Advertising • Banking, • BPO / KPO Web Servers (Apache, lighttpd, Nginx, Cherokee) Load Balancers (HAProxy, Nginx, Pound, LVS, balance, Varnish, Zeus Load Balancer) Ruby on Rails (Phusion Passenger, Unicorn) Python (mod_python, uWSGI, gunicorn) Java (Tomcat, Glassfish, Jetty, Jboss) Database/DataStores (Mysql + variants, Postgresql, Oracle, Mongodb, Memcached, Redis, Riak, Membase/CouchDB, nd others) Data Analysis (Hadoop, Bigdata) Distributed File System (Glusterfs, Coda, Ceph, pVFS, Lustre, ZFS, OneFS, XtreemFS) Search (Solr, Lucene, Nutch, ElasticSearch, Lily, Katta) Caching (varnish, memcache, flashcache) Monitoring (Nagios, Munin, Icinga, Ganglia, cacti, ntop, op5, Zabbix, pandoraFMS, OpsView and others) DNS (bind, tinydns,) Mail (postfix/sendmail/qmail/exim, Dovecot/Courier) Security (Snort, Splunk, Samhain, OSSEC, OSSIM, Suricata) Centralized logging (rsyslog+loganalyzer, splunk, zlogfabric, octopussy, Samhain, Graylog2, Kibana, Log.io, OpenTSDB, Flume, Scribe CMS (wordpress, joomla, mambo, typo3, etc and other custom developed CMS) and many other applications and services Most of these infrastructure architecture are for high volume traffic web application or for massive computing requirements. I can help you in following way. • python, django, golang web app development, REST back-end • code deployment, automation • Efficient monitoring system and notification configuration • OS updated and performance tuning of kernel to support database & applications. • Backup solution to take backup and transfer to offsite. • A configuration management ( saltstack / puppet/ cfengine) and load balancing solution. • • Source control using git, svn • On call support.  less

    linux-system-administration haproxy clustering rackspace-cloudservers python php apache-administration postfix mysql ruby ruby-on-rails nginx postgresql mongodb nagios 00 more less
    • $33.33 HOURLY RATE
    • 5.0
    • 21 HOURS
    • INDIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 1 TEST
  • Web developer with wide range of skills

    I have a great experience in developing web-based applications using wide range of technologies. Prefer to use functional based languages in everyday work. My experience in server-side programming in Python, Erlang and Scala is perfect as well. Front-end developing in … more

    I have a great experience in developing web-based applications using wide range of technologies. Prefer to use functional based languages in everyday work. My experience in server-side programming in Python, Erlang and Scala is perfect as well. Front-end developing in HTML5, CSS, JavaScript and jQuery. Desktop developing using C (GTK, console, daemons), ObjectiveC (Mac, GNUStep), Scala(Swing). My hobbies are to study new technologies and programming languages; aquadesign and maths. Also I use VIM, Linux(have some experience in kernel driver developing), biochemistry and statistics.  less

    python erlang scala c javascript jquery mysql postgresql html5 css biostatistics php mongodb nosql node.js web-scraping git scrapy-framework russian 00 more less
    • $22.22 HOURLY RATE
    • 4.8
    • 69 HOURS
    • RUSSIA
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 1 TEST
    GROUPS:
  • Linux Specialist

    I have been involved in Linux and FOSS for more than 10 years on both servers and desktops. - First as MSc and PhD student I used my Unix, Python, Shell scripting knowledge in my computational (quantum chemistry) research on local … more

    I have been involved in Linux and FOSS for more than 10 years on both servers and desktops. - First as MSc and PhD student I used my Unix, Python, Shell scripting knowledge in my computational (quantum chemistry) research on local workstations and remote supercomputers resources. - After getting PhD I decided to switch from Science to Applied IT and started to work as System Administrator and go much deeper into server technologies (i.e. Apache, MySQL, Nagios, RedHat, DNS/DHCP, Nagios) working on hundreds of server in more than one location. I have also experience in programming (i.e. Python, HTML/CSS and PHP) software designing & testing, leading projects.  less

    linux-system-administration python awk bash puppet-administration html css mysql php javascript ruby c 00 more less
    • $50.00 HOURLY RATE
    • 4.0
    • 233 HOURS
    • UNITED KINGDOM
    • LAST ACTIVE
    • 3 PORTFOLIO ITEMS
    • 5 TESTS
  • Mr.

    More than 4 years Experience on Oracle Database Server Administration. Oracle Certified Expert on RAC and SQL. Oracle Certified Professional (OCP). • Oracle Database administration 10gR2-11gR2 (RAC and non-RAC database) • Installation Oracle Software: Oracle Grid Control, Application Server, Clusterware, Grid Infrastructure … more

    More than 4 years Experience on Oracle Database Server Administration. Oracle Certified Expert on RAC and SQL. Oracle Certified Professional (OCP). • Oracle Database administration 10gR2-11gR2 (RAC and non-RAC database) • Installation Oracle Software: Oracle Grid Control, Application Server, Clusterware, Grid Infrastructure, Weblogic. • Replication databases: Oracle Streams, Advanced Queuing, Golden Gate. • Configure/setup/plan for Recovery Manager (RMAN) Database backup and recovery, export/import, Data Pump Export/Import and flashback database. • Responsible for database optimization, performance tuning, and resolution of database performance issues. • Partitioning(Sub-partitioning), Compression. • Configure/setup Oracle Data Guard. • Advice and assist applications development staff and users on database solutions to technical problems, data architectures, database management system usage and capabilities, and the operation and tuning of databases to handle applications’ needs. • Apply Oracle patches and upgrades. • Network/System administration: Unix-Systems, WINDOWS: DNS, AD.  less

    oracle-database oracle-application-server oracle-performance-tuning oracle-rac database-administration operating-systems-development vmware-administration vmware-esx unix-system-administration linux-system-administration 00 more less
    • $22.22 HOURLY RATE
    • 5.0
    • 243 HOURS
    • RUSSIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 2 TESTS
  • Computer enthusiast and nerd :)

    In the entirety of my life I have been working on or around computers. Currently I work from home dealing with inside sales and customer support for a health IT company. I have been building small websites and running game … more

    In the entirety of my life I have been working on or around computers. Currently I work from home dealing with inside sales and customer support for a health IT company. I have been building small websites and running game servers since a young age. Not only do I enjoy the social aspect the internet, but also the opportunity to work is awesome! I work on the phone all day, and have developed a great speaking manner with customers. I have also been working with clients from odesk maintaining/updating websites. On the geeky side of things I have been running a Minecraft server called "DoubleTree" for the passed three years. I have worked with Multricraft and know most plugins fairly well. The server runs off donations and has been successful so far. It is a fun thing to be involved with and I love the Minecraft community. Skills include; -6+ years of phone sales experience/customer relations. -Web design and smf forum hosting. -Computer VNC networking. -Basic online donation systems. -Bass Guitar -Bukkit plugin knowledge and minecraft experience since beta 1.2  less

    telephone-skills sales website-development music-composition game-testing 00 more less
    • $22.22 HOURLY RATE
    • 5.0
    • 48 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 4 TESTS
  • Advanced linux administrator and system automator

    In the world of 24/7 available services, giving to the customer best stable and optimized Linux environment is the primary role of every System Administrator, my role too. I've 5 years of experience in automation, installation and maintenance … more

    In the world of 24/7 available services, giving to the customer best stable and optimized Linux environment is the primary role of every System Administrator, my role too. I've 5 years of experience in automation, installation and maintenance of Linux servers based on RHEL, CentOS, Fedora, Debian and Slackware distributions. Also I'm managing a lot of live servers for the biggest Telcos in the Middle east and Africa using new technologies, and also proven old ones.  less

    perl awk 00 more less
    • $22.22 HOURLY RATE
    • 4.6
    • 207 HOURS
    • BULGARIA
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 6 TESTS
  • ColdFusion Developer / Technical Support

    I am a freelance web programmer, based in Karachi, Pakistan. I had spent 6 years in the corporate world as a web/software developer, working both in the office and remotely. Three years ago I left transitioned to freelance web … more

    I am a freelance web programmer, based in Karachi, Pakistan. I had spent 6 years in the corporate world as a web/software developer, working both in the office and remotely. Three years ago I left transitioned to freelance web programming and open source application customization. I feel I have been successful, not just because of my ColdFusion/ASP/ASP.net/PHP programming/ Troubleshooting skills, but because of my honesty and strong work ethic. I enjoy working one on one with my clients, rather than having project managers involved. Because of this, most of my clients are individuals and small business owners. I am able to effectively communicate via email and IM (Yahoo, MSN, Gtalk) to complete projects to client’s specification. I have worked on hundreds of dynamic websites, programming them with ASP/ColdFusion/PHP. I have done everything from debugging code, to upgrades, custom development and customizations to open source software. I am well experienced in various open source and commercial applications like WordPress, Joomla, SugarCRM, phpBB, vBulletin, SMF, Moveable, Snitz, Moodle and OScommerce etc...  less

    coldfusion technical-support 00 more less
    • $15.56 HOURLY RATE
    • 4.6
    • 19 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 3 PORTFOLIO ITEMS
    • 4 TESTS
  • Programmer / Developer

    I would like to build my career at oDesk and prove myself as a proud member of oDesk Family . I am interested to work with a company or individual and would like to get committed for a long term collaboration … more

    I would like to build my career at oDesk and prove myself as a proud member of oDesk Family . I am interested to work with a company or individual and would like to get committed for a long term collaboration with a reliable service buyer. Experienced in the following areas: 1) Web Design & Development HTML || HTML5 || CSS || CSS3 || Java Script || PHP || MySQL || jQuery || Json 2) Database Design & Development Oracle 9i ,10g Database || Oracle 6i, 9i, 10g Developer || Oracle 9i Discoverer Desktop || MySql 3) CMS Wordpress || Joomla 4) SAP ABAP (Advance Business Application Programing ) I am hardworking, reliable, fast, dedicated & responsive to my task. I am here for you to support using my IT related skills, morality and honesty. So just knock me and get me to work with you. Thank you very much for visiting my profile.  less

    html5 css3 javascript php wordpress sql oracle-pl/sql oracle-database oracle-forms sap-abap 00 more less
    • $7.78 HOURLY RATE
    • 4.9
    • 141 HOURS
    • BANGLADESH
    • LAST ACTIVE
    • 5 PORTFOLIO ITEMS
    • 3 TESTS
    GROUPS:
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