Zimbra Administration Freelancers

Browse Zimbra Administration job posts for project examples or post your job on Upwork for free!

Zimbra Administration Job Cost Overview

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

Upwork Zimbra Administration Jobs Completed Quarterly

On average, 8 Zimbra Administration projects are completed every quarter on Upwork.

8

Time to Complete Upwork Zimbra Administration Jobs

Time needed to complete a Zimbra Administration project on Upwork.

Average Zimbra Administration Freelancer Feedback Score

Zimbra Administration Upwork freelancers typically receive a client rating of 4.72.

4.72
Last updated: May 1, 2015
More options
Clear all filters
  1. Md Probal Rahman

    Md Probal Rahman

    Network, Firewall and Linux Systems Engineer

    Bangladesh - Last active: 6 days ago - Tests: 10 - Portfolio: 3

    Network Engineering position that capitalizes on expertise in CISCO Routers/Switches & ASA Firewalls, Linux/Unix (RedHat, Debian, SUSE, BSD, CENTOS, FC, Ubuntu etc), Windows 2000/2003/2012 R2 platform. Dedicated to pursue further challenges in the field of Networking Engineering wherein my skills and knowledge will be highly developed and utilized. Maintain focus on achieving end-results while demonstrating strategic problem solving skills and ability to follow through with multi-tasking job. Can work with any new challenges especially in the Networking and System platform with minimum instructions. I am also experienced with other vendor swithces such as 3Com, LinkSys, Prolink etc. Firewalls from other vendors such as NetScreen, Fortigate 1000FA2, SonicWall, Monowall...Confident in HTML troubleshooting, Mail Servers in Linux Platform, RDS in Windows 2008 & 2012 R2, MySQL, SQUID, DHCP/DNS Servers and Opensource applications in Linux platforms..

    $33.33 /hr
    53 hours
    4.96
  2. Ilya I.

    Ilya I.

    Expert Linux administrator, Devops

    Thailand - Last active: 2 days ago - Tests: 7 - Portfolio: 2

    My goal is customer satisfaction. If you need to get something done - leave it to me. OS: Linux - expert, FreeBSD and Windows Server - proficient Cloud services: AWS, Rackspace SCM: Puppet, Ansible Web servers: Apache, Nginx, Tomcat Database servers: Mysql, Postgresql Atlassian: Jira, Confluence, Crowd, etc - the whole suite Monitoring: Nagios, Groundwork, Zabbix, Monit, Munin, Cacti Virtualization: Openvz, Vmware ESXi/server, Proxmox Mail servers: Zimbra, Exim, Sendmail, Dovecot Backups: Bacula, duplicity, rsnapshot High availability: Corosync/Pacemaker, DRBD Other: standard network services (DNS, DHCP, LDAP, Samba, SVN/Git, http proxy, jabber, VPN, backups, monitoring etc), firewalls and routers (iptables, iproute, VLAN, bridging, bonding). Performance optimization: Magento, Wordpress, etc.

    $95.00 /hr
    2,571 hours
    4.84
  3. Aleksey Maksimenko

    Aleksey Maksimenko

    System and network administrator

    Russia - Last active: 11 days ago - Tests: 2 - Portfolio: 2

    Good day! I am network administrator Aleksey Maksimenko. I have experience in network administration for more than 10 years. I can solve common network tasks, but i can make research work for unique scenario too. My credo always be to meet your needs and deadline. Also i have skill of configuring for Windows and Linux servers. I can configuring mailing services, VoIP, billing app and web servers. Since 2010 i am growing my experience of develop failover and high available systems. Listed below are my experience and skills. Protocols and technologies: OSPF, EIGRP, IS-IS, VRRP, HSRP, RSTP, MSTP, EtherChannels, IGMP snooping, DNS, DHCP, NAT, QoS, Traffic Filters, DMVPN, DynVPN. Platforms: Juniper SRX EX MX, Cisco ASA ISR Catalist. Mikrotik and HP ProCurve Wireless: Ruckus, Aruba, Moxa, Cisco. Seamless roaming. Services: LDAP, Radius, Crypto. Business communications: SMTP, VOiP.

    $22.00 /hr
    0 hours
    5.00
  4. Monowar Hossain

    Monowar Hossain

    Sr. System Engineer

    Singapore - Last active: 2 months ago - Tests: 1

    Qualified IT professional with variety of software, hardware, and networking knowledge. Exceptional teamwork and leadership skills. Efficient troubleshooter with commitment to lifetime learning. I am experienced on Zimbra Collaboration System, Cloud Infrastructure, ClearOS, Docker, VMware, Zenoss, Linux and Mac OS. Implemented a plenty of projects. Leading an engineering and support team in Singapore.

    $15.00 /hr
    3 hours
    5.00
  5. Stamatis Kekes

    Stamatis Kekes

    Senior system administrator and PHP - C - Perl developer

    Greece - Last active: 1 day ago - Tests: 11 - Portfolio: 2

    Very skilled Unix system administrator, with lot of experience in Linux ( Centos, Redhat, Fedora, Ubuntu, Debian, Gentoo, Slackware ), Solaris, xBSD ( FreeBSD, OpenBSD), vpn ( openswan - ipsec, openvpn, l2tp, pptp ), clustering ( LInux Virtual Server, Linux HA, vrrp, Solaris Cluster ), cloud computing, load balancing ( f5, haproxy ), VoIP ( asterisk ), databases ( MySQL, PostgreSQL), LDAP, web services ( Apache, Nginx, varnish ), security ( penetration testing, firewall policy design ), control panels ( CPanel, Plesk, Virtualmin, Ensim ), Virtualization ( VMWare Virtual infrastructure - VSphere, amazon EC2 ). As for Developing I am very experienced in C, PHP, Perl, javascript, ajax and many more to list.

    $16.67 /hr
    1,645 hours
    4.79
  6. Ratko B.

    Ratko B.

    Network System Engeener

    Serbia - Last active: 1 day ago - Tests: 4 - Portfolio: 3

    I have 24-years experience in network projects including design, implementation, system administration and in software development. For the first 5 years of my career I worked on software development: coding and especially testing. For the last 18 years I'm working on implementation and maintenance of University of Nis WAN. Last 13 years I'm deeply involved in AMRES (Academic Network of Serbia) project. http://www.linkedin.com/in/ratkobucic Don't fix it if it ain't broken, don't break it if you can't fix it! SKILLS SUMMARY Operating Systems: *nix (SGI IRIX, Linux, SCO, FreeBSD), MS Windows 3.1/9x/Me/2K/NT/XP/2003/Vista/W7/2008 LAN & WAN: Ethernet, Fast Ethernet, Gigabit Ethernet, FDDI and Wireless LANs. T1/T3, SDH/SONET, Frame Relay, WDM, ISDN, ADSL, SHDSL, Cable Modems, Cellular, X.25. Network Protocols: TCP/IP, IPv6, UDP, OSI, CDP, IP Multicast, IPSec, VoIP, Routing, VLANs, Bridging, Trunking, VPN, SNA, DLS Network Services & servers: SMTP/POP3/IMAP, FTP/SFTP, Telnet/SSH, HTTP, DNS, DHCP, NNTP, NTP, LDAP, SNMP, NETBIOS Network Equipment: various types of modems, switches and routers (mostly Cisco). Cisco IOS software. Cisco routers & switches: Catalyst 65xx series, Catalyst 35xx series, Catalyst 29xx series, 16xx series, 17xx series, 25xx series, GBIC, Cisco Access Servers AS36xx. Programming Languages: C, Pascal, MS Visual Basic, Unix Shell scripting, JAVA Script, PHP, HTML, Flash.

    $20.00 /hr
    180 hours
    5.00
  7. Russel R.

    Russel R.

    System Administrator, Cloud and Mail Expert

    Bangladesh - Last active: 1 day ago - Tests: 6 - Portfolio: 6

    Accomplished systems administrator with 10 years of experience on Server management and Security, WHM Hardening, Live Server Migrations, Critical Troubleshooting, Linux and Windows Server Installation and Configuration and Data-Center operations across multiple platforms (Unix, Linux and Windows). Expertise on - AWS - RackSpace - Google Cloud - MS Azure - Zimbra - MS Exchange - Office 365/Hosted Exchange - Postfix and Exim based mail system - Google Apps - Web Security - WHM/cPanel - DNS - vTiger/SugarCRM - Apache - Nginx - MySQL - IPTables

    $13.33 /hr
    769 hours
    4.92
  8. Anoop Sikhwal

    Anoop Sikhwal Agency Contractor

    System Engineer / CCNA/ CCNP / RHCE / RHCSA / Nagios / Security

    India - Last active: 3 months ago - Tests: 4 - Portfolio: 4

    I have significant knowledge through 5 years of work experience in a variety of fields including network administration, hardware maintenance and Server security, working with data centers. Successfully completed the following trainings: ●Network & Server monitering tool (nagios, Cacti, OpesView). ●LDAP Server, JBoss server, Java Hostings ●Application Server Installation, configuration (Tomcat, GlassFish) ●Firewall (Hardware and Open Source Firewall) ●SVN,CVS configuration and troubleshooting. ●Environment VMware, Esxi, KVM, HyperV, Azure ●Email server configuration for Enterprise with Mass Mailing ●Task Automation with Perl and Shell scripting. ●Database installation, performance tuning (MySQL, PostgreSQL Oracle). ●Database Replication, Load Balancing. ●Windows Active directory configuration with centralized login. ●Web Server IIS installation and configuration. ●MS SQL Server Installation, Configuration and Optimization. ●Open Source CRM configuration (Vtiger, SugarCRM) ●Automate Server and System Backup and Restoration. ●IM (Instant messaging) BigBlueButton for Chat and Video Chat ●WHM control Panel and managing 160 clients on our server ●Hosted 150 Websites on our servers providing 99.99 percent, ●Providing Security on Servers and Local Network

    Associated with: eBABU INC, EngineerBabu Team

    $10.00 /hr
    5 hours
    4.89
  9. Vijay Kumar N

    Vijay Kumar N Agency Contractor

    AWS Cloud & System Admin

    India - Last active: 23 days ago - Tests: 3 - Portfolio: 14

    Having 2+ yrs of experience work on installation, configuration, monitoring of cloud based Infrastructure for various enterprise products and systems. Below is the quick summary of my career: ============================== Having good knowledge in Hadoop, NOSQL, AWS Having good experience and knowledge on LDAP and Identity Management Installation Experience in Automation ,Monitoring and Infrastructure management Good knowledge on Public and Private Cloud Exposure of SAAS,PAAS and IAAS Good knowledge on Application servers and web servers Well Experienced in email services and installation Having Experience in Middleware Technologies Good Experience in different OS installations Having knowledge on Ruby on rails Having good experience in installation of CMS and DMS Well experienced in installation of Version Control tools Having experience in installing Webmin, Puppet Technical Skills =========== Virtualization: ESXi, VCenter, Xencenter, Xenserver. PAAS Infrastructure : openshift Bigdata: Hadoop, Pig,Hive, DBMongo Cloud and Virtualization: Amazon,Ec2,VPC,Load Balancing, Private Cloud: Openstack,Cloudstack Public Cloud: Openshift,Stratos,Heroku,Engine-Yard,Startos FTP: NAS, Samba,Confluence,Jira,Juju. Integration : WSO2 ESB and Apache Camel Email service : atmail,zimbra Middleware: Jbpm (JPDL and BPEL),wso2 process server), RabbitMQ, JCA, SCA Application : Web services (WS-*), SOAP,wso2 application server CMS & DMS : Joomla,Drupal,Magento,Wordpress,Alfresco Web & Portal : Liferay Version control and continuous integration: Jenkins,SVN,Maven Identity and Security mgmt : WSO2 ,SSO, openLdap,fortress, openIDM,wso2 identity server Application Server: Jboss,Wso2 Monitoring: Nagios,cpanel,Plesk Load Balancing: Mod_jk,Apache Tomcat,Nginx Project & Project Management Experience: =============================== Bizruntime IT Services Pvt Ltd: Internally projects with WEH and GCS Infotech Pvt Ltd. WEH: Software Engineer Work on LDAP and Identity Management Work on Amazon, EC2,VPC,Load Balancing,Route53. LDAP Synchronization with Liferay Worked on AWS instances. Worked on SSH-keygen Worked on Cloning the instance from one region to another region. GCS Infotech Pvt Ltd: Software Engineer Worked on Load balancer using Mod_jk,Apache tomcat,Nginx Worked on email services like atmail,zimbra Worked on mysql clustering,postgres Installation of Puppet and Webmine Worked on RabbitMQ Server BizRuntime IT Services Pvt Ltd: Software Engineer Work on Cloudera Installation Installation of Different OS Worked on Version Controllers Worked on SSH-keygen Working on Private Cloud Like..Openstack,Cloudstack, Virtualization of servers Worked on local installation of atmail and Zimbra configured email services. Working on Monitoring tools Like..Cpanel,Nagios,Plesk Worked on OSB for Virtualization purpose Working on Oracle Fusion Middleware Like..SOA using JDeveloper

    Associated with: HRO IT Services Pvt Ltd, Bizruntime IT Sevices Pvt Ltd

    $22.22 /hr
    1,584 hours
    5.00