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Post your Linux system administration project on Upwork and find Linux experts and system administrators to assist you with your Linux server installation, configuration, maintenance and technical support tasks. These experienced consultants can manage your Linux network and infrastructure security or perform backups and security scans or updates and identify threats on your Linux OS system. They can also deploy web applications, eCommerce systems and content management systems on your Linux server, or migrate your virtual machine to a physical Linux server. You can also find a professional Linux sysadmin, experienced in system monitoring and control tools, to manage and optimize your Linux-based server farm.

Linux is a collection of free and open-source, cross-platform, Unix-like operating system distributions, among which the most widely known are Ubuntu, Red Hat and Slackware. On Upwork, the world’s largest online workplace, you can find experienced Linux system administrators to set up dedicated Linux web servers, install web hosting control panels (like ZPanel, Plesk, cPanel or DirectAdmin), set up SQL databases and file managers or configure Linux server security and accounts.

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Last updated: October 1, 2015
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Murilo Goulart

Murilo Goulart

Systems Administrator


A highly competent Systems Administrator with 16 years of practical experience in designing, maintaining and deploying ICT infrastructure solutions, certified by major software companies such as VMware and Microsoft and highly regarded by well-known companies from a diverse range of industry sectors due to important contributions and unconditional commitment to many projects. My areas of expertise are: - Infrastructure Architecture - Virtualization .............................. (VMware, Hyper-V) - Cloud Computing ..................... (SaaS: Google Apps, Office 365; IaaS: Amazon AWS, MS Azure) - Operating Systems ................... (Linux, Windows, OpenBSD, OS X) - Server and Storage Admin .... (IBM, HP, 3PAR, Dell) - Web and App Servers ............. (WildFly/JBoss, Glassfish, Tomcat, Jetty, Apache HTTPD, Nginx) - Networking Peripherals .......... (Cisco, H3C/3COM, D-Link, Brocade) - Network Services ..................... (DHCP, DNS, Caching Proxy, FTP, VPN, IPSec, MS AD, WSUS) - Cybersecurity ............................ (PF, OpenBSD; Iptables, Linux; Forefront TMG/ISA, Microsoft) - Collaboration Suite .................. (Zimbra, MS Exchange, MS SharePoint) - Backup & Recovery .................. (HP Data Protector, IBM TSM, Bacula) - High Availability ........................ (VMware SRM, MS Cluster Service, Oracle Clusterware/RAC) - Scripting & Query Language . (Bash, SQL) I also have significant experience in and huge curiosity about: - Relational Database Management Systems . (Oracle, MS-SQL, PostgreSQL, MySQL) - NoSQL ...................................................................... (Couchbase, Cassandra) - Web Application Development ........................ (Java, JSF, JPA, EJB, JAAS) - JEE Application Servers ..................................... (WildFly/JBoss, Glassfish) Feel free to get in touch with me, it would be great hear from you!

$13.00 /hr
0 hours

Yuriy Georgiev

Yuriy Georgiev

Windows Administrator

Bulgaria - Tests: 1

I'm a Windows Administrator with more than 10 years of experience. My computer skills covers high variety of operating systems and hardware platforms. I’ve started working in DOS environment then I went through almost all Windows OS including Window Server 2000, 2003, 2008 and Window 2012 server. I was working with Slackware and SuSe Linux also. I have deep knowledge and experience with x86 platform, storages and networking. I was maintaining Windows Environment including GPO, DFS and the share access. I was creating and managing Xen virtual machines, Web and Mail servers with Apache, Qmail and Postfix. I was responsible for the management of the customer network environment including the Firewalls, Routers and VPN's. I was participating in several projects including: 1. Building of DR site, 2. Improving cluster performance 3. Disaster recovery trainings 4. Creating and managing GPO's 5. Building MAN network 6. Implementing ISO 27001

$16.67 /hr
0 hours

Marcel Verspuij

Marcel Verspuij

Social WiFi specialist

Netherlands - Tests: 1 - Portfolio: 2

For different customers I build social WiFi solutions. From city free WiFi solutions to small business plug & play social WiFi solutions. This for MikroTik en OpenWrt routers. The cloud WiFi CRM is brand independent. It can serve the social WiFi landing page for many different captive portal and hotspot solutions. The cloud WiFi CRM is white label. Each customer can have his own look and feel. Customers can add their own functionalities and reports in the CMS. Because of the different international customers solutions are build in Amazon cloud or on their private server. Linux and Radius experience is high.

$33.33 /hr
4 hours

Rodney Caston

Rodney Caston Agency Contractor

Systems Engineer

United States - Tests: 3

I have over fifteen years experience in linux systems administration and development, having managed large environments composed of many thousands of systems. I believe I bring with me a valuable perspective on how to provide solutions for efficiently managing extremely large, and distributed environments without scaling headcount. Some of my accomplishments include having built site reliability/network operations centers from the ground up, from the development of the fault and performance management systems to the management of the staff. I have built up and administered large scale email infrastructures which would send and receive millions of emails daily. I have managed datacenter migration projects consisting of thousands of servers running live services. I have extensive experience in the online gaming industry, focusing on adminsitration, server engineering, and DevOps. I have even worked in a creative capacity as a writer and creative designer in the past, having co-created the MegaTokyo™ intellectual properties. Given the variety of roles I've had in my career, I consider myself a jack-of-all-trades. What I enjoy most is being able to provide value to the organizations that I am able to support, regardless of what role that places me in at the time. Specialties: Amazon Web Services, Apache, Backtrack 5, Bind/DNS, Cacti, Chef, Cloud, Drupal, Elasticsearch, Ganglia, Glusterfs, HAProxy, Heartbeat, Kibana, LDirectord, Linux (Ubuntu, Debian, Redhat, CentOS, Kali), Logstash, Memcache, Metasploit, Monit, MongoDB, MRTG, Munin, MySQL Server, Nagios, Netcool, Nginx, Offensive Security, OpenVAS, OpenVPN, OSSEC, OSX, Penetration Testing, Postfix, PowerDNS, Puppet, Ruby, RRDTool, SAN, Samba, Sendmail, Shell Scripting, Splunk, Squid, Syslog, SMTP, SNMP, SSL, Squid, TCP/IP, VMWare, Windows, and Xen.

Associated with: Caston Consulting LLC

$91.11 /hr
1,634 hours

Andriy Ivashchenko

Andriy Ivashchenko

IP PBX Specialist, Asterisk, VoIP, Debian Linux

Ukraine - Tests: 2 - Portfolio: 10

Over 15 years of Debian Linux expertise, VoIP Access Servers, Linux Routers. Customization of Asterisk packages for Debian. Full support for DAHDI channel Digium hardware. Dialplan programming and customization. GSM and mobile services for Asterisk, including Huawei USB technology. Linux System optimization for VoIP and IP PBX.

$22.22 /hr
0 hours