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  1. Alex Efros

    Alex Efros

    Perl Developer, Systems Architect, Linux Admin

    Ukraine - Last active: 01/22/2014 - Tests: 9 - Portfolio: 15

    Experienced in developing distributed systems, network services and backends for websites in Perl. I can develop complete website solution from Linux server installation and administration to complex modern web-interface in JavaScript (except graphical design). I'm developing software since 1989. I work as Perl/Web Developer since 1997. Development priorities: code simplicity and clarity, reliability, security, efficiency. I've experience with Apache and Nginx web servers, MySQL and NoSQL databases, Mojolicious and Backbone.js frameworks, Perl/HTML/JavaScript/CSS, FastCGI, non-blocking I/O, event-oriented and concurrent programming, complex parsing (fetching, parsing and processing complex data from thousands pages on hundreds websites every minute), service-oriented architecture, distributed computing, developing Perl modules, automated testing, … I work as Linux admin since 1994. Experienced in developing own Linux distribution from scratch (2001-2004). I've strong focus on security and since 2004 use Hardened Gentoo Linux. Experienced in developing large systems (50000+ man/hours) as Systems Architect and Senior Developer. Experienced Team Leader and Manager for small team (about 10 developers/testers). Also I'm author of many articles (mostly in Russian) and have small experience (about 6 months) as Top Manager in software company (about 200 employee). Since 2001 I'm working as full-time freelancer. I never agree to work which must be done quickly in exchange for quality. I like to do things in the Right Way and prefer simplicity and minimalism. I'm interested in tasks which should be implemented using OS Inferno and language Limbo (which usually mean distributed and/or highly concurrent systems). I'm looking for long-term business relationships with customers. More details (a lot of my open source software, perl modules, articles, links to LinkedIn/GitHub/etc. profiles) available on my website: http://powerman.name/

    $30.00 /hr
    0 hours
    5.00
  2. Sabin S

    Sabin S

    WordPress Expert, Web Developer, Sr. Web Server / Database Admin/Guru

    Nepal - Last active: 09/22/2013 - Tests: 14 - Portfolio: 18

    Over 14 years of SysAdmin / Web Hosting / Web Developer experience I believe that Communication, Deadline, Integrity and Commitment are vital to a project success. I am RHCE Certified. My Expertise are Install, Optimise, Tuning , Hardening Security & Troubleshooting 1) Linux Server: Centos, Redhat, Ubuntu, Debain, Fedora, Freebsd, Sun Solaris, Vmware ESXI V4/5, Xen etc. with Bash, Perl. 2) Amazon: AWS, S3, EC2, VPC, RDS, SQS, FPS, Simple DB, Load-Balance, Scaling, EBS, Route53, Webservices etc 3) VPS / Dedicated Servers Setup Secure Hardening Security : Godaddy, MediaTemple, Rackspace, Bluehost, Cloudfoundry etc. 4) Web / Application Server: Apache 2, PHP, suPHP, Python, Perl, Nginx, Lighthttpd, Tomcat 5.5/6/7, Oracle Application,IIS Server etc 5) Others: SSL Certificate, Bind DNS, Vsftpd/Proftpd FTP, Squid, GIT, SVN, Varnish, Memcache, eAccelators, Cloudflare, CFS, Fail2ban, (D)DoS Deflate, IPTABLES etc. 6) Database: MySql 4.1/5/5.5/6 , Postgresql 8/9.1, MSSql, Oracle11g Setup, Secure, Tunning performance, Troubleshoot, Repair, Replication, Cluster etc. 7) Control Panels & Graph: Plesk 8-11.x, WHM 11.x, Webmin 1.x, ISPCONFIG, DirectAdmin, PhpMyAdmin , PhpPgAdmin, MRTG, Cacti, Nagious, NewRelic, Boundary etc. 8) Mail Server: Qmail, POSTFIX, Exim, Sendmail, Exchange Server 2005/2007, Squirrelmail, Horde, PHPlist 2.10.x 9) CMS: WordPress, Magento, SugarCRM, Joomla, Drupal, Zencart, SocialEngine, Zen Cart, OS Commerce, vBulletin etc. 10) Backup Upgrade and Migrate Sites & Server: Wordpress, Drupal, Magneto, Joomla, Magento, PHP Mysql Sites, others Domain Name Server Setup, Domain Transfer with zero DownTime, Google Apps setup etc. 11) Clean Virus, Malware and Secure Servers and the Sites like WordPress,Drupal, Joomla, Magento, PHP Mysql site, etc. 12) Windows Server 2003/2008R2 IIS, DNS, Active Directory, VPN, MS SQL 2005/2008, FTP, Plesk etc. I have over 8 years of Expertise Designing UI, Coding WordPress and also developed and customised lot of PLUGINS, Themes, Widget, Feed, SEO, Cacheing and can also work with WordPress VIP Standard. I have also good knowledge of Genesis, Woo themes & ecommerce, Thesis, Canvas, PageLines DMS, Catalyst, Gantry, Elegant, Headway, iThemes, Themify, Seed etc framework. I code, secure and design a wide range of websites and software using Web 2.0 Strategist, HMTL , XHTML, JAVA SCRIPT, JQUERY, DHTML, AJAX, SEO, PERL, PHP 5 , MySQL 5, SMARTY, PHOTOSHOP, ILLUSTRATOR, JAVA 6, J2EE, Wordpress 3, JOOMLA, DURPAL, Magneto, Zen Cart, OS Commerce, vBulletin, SocialEngine 2 & 3, Clip-share etc You can see my experience details in my ODESK profile. If you need more about my experience please message me. Please feel free to contact me to discuss the project any time. I look forward to work with you in near future. Thank you, Regards, Sabin Shrestha

    Groups: Red Hat Certified, SocialEngine

    $22.22 /hr
    775 hours
    5.00
  3. Werner Gillmer

    Werner Gillmer

    Senior Linux / UNIX system administrator

    South Africa - Last active: 11/14/2013 - Tests: 2

    I have over 12 years Linux and UNIX (BSD, Solaris, HP-UX) experience working for various corporate clients. My core skills are but not limited to : * Setting up and adminstrating HA (high availibility / load balanced)/ Cloud Linux/UNIX envirouments. * Setting up commercial cloud envirouments (Amazon, Heroku, Azure, etc.) * Configuration of Web services (Apache, nginx, lighthttp, tomcat, glassfish, jboss, etc.) * Setting up DHCP, DNS, ftp, ssh, proxy servers etc. * Security (iptables firewall, snort IDS, Nessus and OpenVAS scanners) * Setting up honeypots using honeyd * System auditing (security penetration testing) * System scripting and automation in Bash, Ruby, Perl, Python, Awk, Sed. * System automation with puppet and chef * Monitoring solutions with Zabbix, Nagios * Setting up CMS systems, Drupal, Wordpress, and all the other well known cms's. * MySQL and PostgreSQL * Setup and configure various network topology's and services using Linux/UNIX servers. * Technical support.

    $27.78 /hr
    7 hours
    5.00
  4. Sameera S.

    Sameera S.

    Server/System Administrator - Linux - 6.7 Years of Experience

    India - Last active: 26 days ago - Tests: 3

    Objective :- Seeking a technically challenging position as Server Administrator / Systems Engineer, providing a highly motivated, progressive, friendly environment, offering opportunities for career advancement and enables me to enhance my knowledge and skills by keeping abreast with the latest technologies and developments. Relevant Experience:- •6.7 Years of experience in Linux Server / Systems Administration and 3 years of experience in Windows Server / Systems Administration. •Expertise knowledge (Level 2 and Level 3) in supporting Servers / Systems related issues for Data Centers and for various hosting clients in the Internet Industry. . Performing server migrations, setting up new servers for production according to the requirements Designing the backup strategy for the sites and ensuring scheduled/unscheduled backups as per backup plan and restoration. Addressing and resolving performance bottlenecks and service uptime •Expertise level of knowledge and experience in configuring Application Servers (Apache, MySQL, DNS, Mail, FTP). •Expertise knowledge in Linux /windows Web hosting Services/Applications and various control panels. •Experience in configuring, monitoring and supporting Servers for various roles that meets customer requirements. •Working knowledge in technologies like Load Balancing, Cloud Layer Computing. •Working knowledge with Storage Layers like NAS, Lockbox, Cloud Layer Storage. •Working knowledge in Backup Solutions like eVault. •Expertise in Server audit and Server Security Hardening. Technical Purview ++++++++++++ Platforms : GNU/Linux, Windows 2003, Windows 2008 Networking : HTTP, DNS, SMTP, FTP, SSH Web Servers : Apache 1.x / 2.0, IIS6, IIS7 Databases : MySQL, MSSQL 2005, MSSQL 2008 Firewalls : IPTABLES, Windows firewall, CSF, APF Server Control Panels : Cpanel, Parallels Plesk, Parallels Pro [Ensim], Xen Centre, Helm, Hsphere, HSPC Mail Servers : Exim, Sendmail, MailEnable, Qmail My expertise level in the topics listed below would range from basic to medium to advanced.

    $13.33 /hr
    0 hours
    0.00
  5. John bernard A.

    PHP/MySQL Developer, Systems administrator, CakePHP Expert

    Singapore - Last active: 5 months ago - Tests: 3 - Portfolio: 2

    For over 10 years, Ive work as a Linux Systems Adminstrator (WebHosting) and PHP developer. As a PHP Developer i have made same web sites that uses Static Sites, CMS driven Site, also frameworks such as CodeIgniter and CakePHP. As a Systems Administrator i work on several software such as CentOS, openVZ, Virtuozzo, Hyper-VPlesk, WHM, cPanel, webmin, Usermin, ISPConfig,Plesk. I can use this knowledge to render service to your company/business.

    $16.67 /hr
    130 hours
    3.83
  6. Sandeil T.

    Sandeil T. Agency Contractor

    Systems and Network Administrator

    Philippines - Last active: 03/31/2014 - Tests: 4 - Portfolio: 3

    I have had the opportunity to work with companies which help me grow and improve my skills by sending me to trainings, seminars, and exposed me to scenarios which requires critical problem solving skills.A part of the hands-on trainings are Basic systems security, Linux systems administration, Oracle database administration, and Oracle performance tuning.On the job experience that enhances my skills are email system setup and maintenance, Linux system and firewall, DNS, OpenBSD/FreeBSD and packet filter, Windows system, and hardware and software trouble shooting.These skills and knowledge I want to share and further improve by providing competitive service and expertise to employers.

    Associated with: Hyperbuddies Expedienet, RYVentures, LLC

    $7.78 /hr
    2,792 hours
    5.00
  7. Rajat Gupta

    Rajat Gupta

    Linux Administrator

    India - Last active: 2 days ago - Tests: 1 - Portfolio: 1

    I'm fully working from the last 3+ years as a Linux Administrator in remote server management and administration. I have knowledge of:Database Administration (MySQL, PostgreSQL);Firewall Configuratio ;Web services configuration (Apache, Nginx and others) configuration;Mail Services management (Exim, Sendmail, Qmail, Postfix);Virtualization (OpenVZ, Virtuozzo, Xen, VMWare Controal Palel : cPanel/Whm , Plesk and other

    $13.00 /hr
    147 hours
    4.94
  8. Hilal Afridi

    Hilal Afridi

    Experienced System & Network Administrator (Linux/Unix/Windows)

    Pakistan - Last active: 11/03/2014 - Tests: 6 - Portfolio: 16

    With more than 10 years of System administration, network administration and management experience ranging from infrastructure build out for a few users to systems supporting hundreds of thousands of customers I can be your safe bet while choosing a system administrator. During these 10 years i have gained experience with various Unix and Linux platforms including but not limited to Redhat, Debian, Slackware, Freebsd, OpenBSD, NetBSD, Solaris etc. My experience with ISP and Telecom background also gained me hands on experience on network equipment such as Cisco, Juniper, Brocade, Foundry, A10, etc.

    $44.44 /hr
    104 hours
    4.74
  9. Kundan S.

    Kundan S.

    System/Network Engineer

    Nepal - Last active: 10 days ago - Tests: 4 - Portfolio: 1

    I have been doing the system/network administration for last 6 years. My core area of work involves setup, maintain and troubleshoot system and network administration. I had successfully implemented and troubleshoot various system and network administration. My work platform includes (but not limited to ) Microsoft, Cisco, VMware, Citrix, Linux, IBM, SAN, Veritas etc. Below are the services which i have been providing to the organizations Microsoft platform : Active directory on w2k/w2k3/w2k8. IIS 6/7 web server/application server/file server/ smtp component for relaying. Certificate services as PKI in w2k/w2k3/s2k8. Visual SVN as subversioning and repository. Exchange 2003/2007/2010 and MDaemon for messaging solutions. WSUS, RDS, Terminal Services, Hyper-V DNS, DHCP, RRAS, Network Policy services. IPSec services PPTP and L2TP VPN Server. Kernel Debugging with Microsoft Debugger and kd tools SQL server 2008 Database administration. VBscripting for standalone and Active Directory environment. Linux services: LDAP with and without samba server. Qmail, postfix, Exim and sendmail as message transfer agent. Dovecot and courier as IMAP and POP3 server. smtp-auth, spamassasin, SPF with linux MTAs. Apache as webserver, apache and git as version control server . ssh server with and without password (with certificates and passphrase). VNC , screen as terminal services. oracle, mysql and postgresql on linux/unix. IPsec site to site and ssl vpn using freeswan, openswan and racoon. linux as firewall gateway using bash/perl gateway along with iptables, psad, and snort. bandwidth shaping policing services using htb and tcng. Voice server based on sip with h.323 support based on asterisk (trixbox, elastix, go-autodial ) with vicidial. quagga/zebra as advanced routing solutions. squid 2/3 cpanel/whm Amanda/zamanda/Bakula/rsync for backup services TCP Wrappers for hardening linux security. ext3/ext4/JFS on linux. puppet as configuration management. clonezilla. Debugging linux problems with signal trapping using bash scripts Networking : OSPF,EIGRP,RIP,BGP routing on cisco, juniper and open source in linux. Acess lists on cisco routers and security appliances (pix/asa). static and Dynamic NAT on cisco, juniper and open source linux/unix. L3 routing in cisco switches. SCCP/SIP in cisco CME, and call manager. INter vlan routing, site to site vpn, PPP/HDLC wan protocols, route summarization, equal/non equal cost load balancing. server virtualization on openvz, proxmox VE, KVM, XEN, citrix, vmware etc. desktop virtualization using citrix xendesktop and vmware view. App virtualization using citrix xenapp and vmware thinapp. user virtualization using citrix profile unity and appsense environment manager. ISCSI and Fiber channel based storage. IBM infosphere guardium for database security and data compliance CA identity minder and site minder. ...

    $11.11 /hr
    27 hours
    0.00