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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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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

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

Tyrel Richey

Tyrel Richey Agency Contractor

Business Process and Software Engineer

United States - Portfolio: 12

I have been programming and studying computer systems for 15 years. I am also very skilled in communicating with business owners and operators in non technical terms, in order to diagnose problems and offer viable solution sets. I have completed many projects. I am extremely efficient and have a wide array of tools on my belt to easily solve any problem. My portfolio can be found

Associated with: The Tyrel Corporation

$82.00 /hr
0 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

Srikant P

Srikant P Agency Contractor

OpenERP/ODOO Expert

India - Tests: 2

OpenERP expert company having customer base through out the globe. With its well experienced team in OpenERP, provides consultancy, development, customization, training, support and maintenance to partners and customers across the globe. Apart from Odoo/OpenERP solutions company also provides web content management, Cloud Solutions, Server Security like penetration testing etc & Infrastructure services

Associated with: Onchange IT Solutions Pvt Ltd

$27.78 /hr
0 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

Daniel Guillermo Bareiro

Daniel Guillermo Bareiro

GNU/Linux and Unix system administrator

Argentina - Tests: 2 - Portfolio: 2

I manage and use free/open source software and GNU/Linux (most experienced Debian) since 2000. I have also participated in numerous conventions related to these themes (some of them as speaker) and collaborating with the discovery of bugs in applications for contribute with the community. Specialties: Networks and operating systems security, monitoring technologies. Advanced knowledge of GNU/Linux environments and virtualization platforms. LANs, WANs, VPNs, Firewalls, TCP/IP. Description of services: ---------------------------------- Servers: ====== Installations, configurations and maintenance plans for servers running GNU/Linux or free BSD operating systems range. * Planning, installation and configuration of GNU/Linux systems as both free and open source systems. * Installation, configuration and maintenance of servers of BSD range: FreeBSD and OpenBSD. * Print servers. * Mail servers with spam and virus filters. * Proxy servers. * Fax servers. * Corporate instant messaging servers. * Install and configure DNS servers. Procedures for domain management. * Management servers for uninterruptible power supplies. * Web servers (Apache, PHP, MySQL and PostgreSQL). * Database servers (MySQL and PostgreSQL). * DHCP servers. Networks and Infrastructure: ===================== Installation, maintenance and failure analysis of networks. High-availability systems, mass storage, remote backup, and monitoring equipment and services. * Installation and maintenance. * Firewalls. * VPNs. * DMZs. * RAID, SAN and NAS systems. * Implementation of VoIP telephony systems. * Virtualization systems (for production systems, development and testing). * Remote backup systems. * Monitoring systems. * Control, preventive analysis and resolution of faults in networks. * Installing and configuring high availability clusters. Consultancy: ========== My main goal is to provide a work environment based on trust, integrity and transparency, in order to become your strategic partner to help you realize your projects. My experience in the field of free/open source technologies allows me to offer a wide range of consulting services for your business, which include audit and analysis of systems, applications and networks, migration to free and open source systems, and systems integration, among others. * Migrating to free and open source systems. * Network analysis. * Security analysis. * Configuring applications. * Systems integration.

100% Job Success
$36.67 /hr
64 hours

Oleg Burca

Oleg Burca

System, Network and Hosting administrator. Wordpress Specialist.

Moldova - Tests: 5 - Portfolio: 2

Hi, I am Linux and Windows administrator, with more than 8 years experience. Currently I'm working as DevOps specialist and SysAdmin for a development company. We create websites, online shops, APIs, applications and much more. I manage about 50 virtual and dedicated servers hosted on AWS, in our DataCenter and all around the world, runing on Windows Server 2008/2012 and Linux Ubuntu/Debian/CentOS. Most of them are Web Servers, but there are also DataBase servers, Mail, FTP and Application servers. Previously worked as engineer in a hosting company and was responsable for installing new services, configuring hosting servers, backup configuration, monitoring and clients support. Managed about 70 servers. I have good network administration skills and a lot of experience with WordPress. Worked a lot wit different panel for hosting, billing, datacenter administration, virtualization, VoIP and other. Latest year, most of projects managed by were hosted on AWS (Amazon Web Services). I am familiar with technologies, the abbreviations of names of those could scare many people: RDS, EC2, Reserved Instances, ELB, SES, SNS, AMI, IAM, S3, VPC, Elasticache, Route53, CloudWatch and others. I can help you plan, configure, scale, monitor, reduce costs of your AWS services. So, what can I do for you?! * First of all I can setup for you a Web Server. IIS on Windows, or Apache/Nginx on Linux. It can be also a mixed configuration with Nginx as frontend and apache for backend. It can be proxy, caching or load balancing configuration. Configure SSL certificates. * I can setup a mail server based on Postfix/Dovecot with antispam and antivirus functionality, with SSL/STARTTLS security. You will be able to use a webmail or dedicated client. * I can setup a File/FTP/WebDav server. * I can setup a MySQL server with PHPMyAdmin. * I can setup a backup solution for your server(s). * I can setup a DNS Server and solve all messing with domains and records for different purposes. * I can setup a virtualization server. * I can setup VoIP server (based on Asterisk/FreePBX). Configure trunks, extensions, conferencies and caller groups. * I can setup a Firewall or/and Gateway server, routers and switches. * I can setup or improve security for your server(s). * I can help you design scalable and reduntant cluster for web, database or application. * I can configure hosting services on AWS, estimate and optimize costs (Most experienced with EC2, RDS, ELB, Route53, SES, SNS). * I can setup Windows Exchange server. * I can setup Windows SharePoint server. * I can configure any business services offered by Google, Microsoft, Yandex or other. * I can migrate your site(s) to another hosting account or server. * I can improve your WordPress website performance and secure it. * I can assist or train you on all stuff about.

$27.78 /hr
0 hours