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Network Administration Upwork freelancers typically receive a client rating of 4.77.

Last updated: October 1, 2015
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Davit A.

Davit A.

Senior System and Network Administrator

Armenia - Tests: 5 - Portfolio: 2

Over last 7 years of experience I designed & deployed wide range of servers and network using Linux/BSD/Solaris/Windows. Worked on different platforms such as Solaris, Mikrotik, WatchGuard, Cisco. I have installed, configured and administered a variety of IT related systems such as Linux HA (Clustering), DRBD, MongoDB (horizontal sharded cluster), Amazon EC2, Puppet, DNS, Mail, Database, Web server and more. Have extensive experience in information security, Linux hardening and bash scripting. Strong knowledge in networking.

100% Job Success
$30.00 /hr
341 hours

Nikola Nikolaev

Nikola Nikolaev

BI Analyst, Linux Expert


I'm a member of a small team. Most of the companies, especially those that do not have IT as a core business, do not utilize the full potential of its IT staff. Our mission is to help business, by preventing it spend too much money on internal IT services. We believe that the expertise and strong motivation are the keys to successful implementation of any technology at any scale. That is why we built a team of self-driven, self motivated experts, with outstanding professional track. Main activities of the team are in the field of GNU/Linux, networking, system integration, software development and implementation in corporate organisations, business intelligence and business process management, financial management and accounting.

89% Job Success
$25.00 /hr
90 hours

Valery K.

Valery K.

Migration expert\Linux System Administrator

Ukraine - Tests: 2 - Portfolio: 2

Hello. I'm self-motivated Linux system administrator with 7 years experience. I have great experience in: - Infrastructure Management/creation. - Network Infrastructure (Cisco) - Storage managment and data replication - Linux/UNIX maintaince/troubleshooting: Debian, Centos, Gentoo, Ubuntu, RHEL, CoreOS, LFS, freebsd/openbsd, osx servers, openwrt/dd-wrt routers and so on. - Web Servers: Nginx, Apache, Unicorn - IP Telephony services: Asterix, freeswitch, *pbx. - Linux serverside: iptables, rsync, named, OpenVPN and most of common and uncommon tools. - Monitoring: Zabbix, Nagios/Icinga, Munin, Cacti, Monit - Hosting providers and cloud providers: AWS, Digital Ocean, onapp and etc. - DB: MySQL, Percona XtraDB Cluster, PostgreSQL, Redis, MongoDB - Backup/Migration/Server replication/ - Mail servers: Postfix, Exim, Sendmail, Dovecot, Courier - Hosting panels : plesk, whm\cpanel, ISP , DirectAdmin - Virtualization: Xen(solusVM) , KVM, OpenVZ + ovz panel, Proxmox, Vagrant, Docker. - Automation: Server jobs automation, bash scripting, docker + vagrant automation. - CMS Service and debugging (NOT Develop) : Wordpress, drupal, magento. - Ruby/ node.js/ python APPS -Windows services: Windows Server Infrastructure, administration, backuping and all around services.

100% Job Success
$30.00 /hr
1,117 hours

Matt Campbell

Matt Campbell

Expert Systems Engineer, Drupal, Database, VBA & PHP Developer

United States - Portfolio: 9

I specialize in Database Development, VBA, SQL, PHP and Microsoft Access. This includes a broad scope of Web Development with Drupal and Wordpress. I am also a MCSE and MCITP. I work as a Windows System Administrator for a large retail POS company. I am network administrator, Linux server technician, web developer, Access programmer, Excel developer, reporting guru, statistician and an expert systems engineer all around. I graduated with an interest in finance, mathematics and statistics. My initial background is in finance. Creating very robust financial modelling databases, and making countless custom queries and reports. This evolved into front end database application development, multi user network based structures, and dense error handling routines. From there I went into data analysis for a large mailing company. Skyrocketing my knowledge of database structures due to the immense size of the datasets. Overall my knowledge base is very broad, and I enjoy learning!

96% Job Success
$35.00 /hr
8 hours

Nikolay Popov

Nikolay Popov Agency Contractor

Network Administrator

Ukraine - Tests: 5

11 years expirience in ISP network administration Mainly worked with Cisco, HP, Foundry equipment. Linux/FreeBSD servers administration (Hosting services, Traffic Engeneering) VoIP (Cisco CME, Asterisk) Passed Cisco BSCI/BCMSN/TSHOOT trainings.

Associated with: Altima Web Systems

75% Job Success
$22.22 /hr
13 hours

Douglas Crowe

Douglas Crowe

Senior Programmer/Analyst

United States - Tests: 1

Hi, I am a programmer with over 15 years experience in the IT industry. I have successfully migrated many legacy Delphi/VB6 applications over to VB.NET as well as C#. Also in my career I have developed many extensive multi-user, multi-site software systems from the ground up covering areas such as dispatching, document management, sales & executive dashboards and ERP. I look forward to helping you with your own automation and business needs.

$66.67 /hr
34 hours

Dmitry Gorlov

Dmitry Gorlov

Linux Admin / Oracle certified professional

Russia - Tests: 11 - Portfolio: 1

Under construction... I start my IT career since 1992 using FoxBase by IBM-compatible 286AT computer. Today my phone have more powerfull CPU :-) In Linux from 1997, begun from Redhat 6.0 In Oracle from 2003, begun from 8.1.7 10g OCP Certified in 2007. Microsoft MCP in 2007.

100% Job Success
$20.00 /hr
445 hours

Jolly Robes

Jolly Robes

Expert in Network and Systems Administration

Philippines - Tests: 1 - Portfolio: 7

My career has led me to specialize in the management of IT Department's daily operations, projects, and staffs. I have gained extensive experience in: strategic planning and execution; setting up Standard Policies and Procedures to meet & maintain ISO 14001:2004, ISO 27001:2005, ISO 9001:2000, & PCI DSS (Data Security Standards); operating within the tight financial disciplines imposed by ambitious budgets which I have helped to plan; and the application of management and leadership methods through staff motivation and involvement in both decision-making and target-setting, clarity in communication, and easy personal inter-relations. I have been through a lot of prompt decision making, crisis management, and IT issue management. My high analytical and logical skills gave me confidence on providing cost effective solutions and root-cause analysis to every issues that I have encountered

$16.67 /hr
10 hours