Network & System Administrators

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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

Oleksii A.

JavaSE/JavaEE Developer, PhD in Information Security

Ukraine - Tests: 5

Enterprise and Web Application Developer. PhD in Information Security. Especially interested in building complex (transactional, concurrent, secured, scalable etc) Java/J2EE based systems. Strive for creating systems based on sound technical designs by applying OO design concepts and software patterns.

$38.89 /hr
1,277 hours

Wilson P.

Wilson P. Agency Contractor

C/C++/OpenGL/Network Programmer

India - Tests: 3 - Portfolio: 5

I am a C/C++ programmer with fair experience in Java and HTML/CSS/Javascript. I specialize in algorithm intensive game physics and ai, desktop applications using wxWidgets, machine learning and C++ based web development targetted for ASPs. Over past 2 years I have 1) Developed from scratch the physics and character maker for a 2D massively multiplayer game. 2) Developed Opensource web application framework in C++ which implements the fastcgi protocol and is designed to solve the c10k problem. 3) GUI for several desktop trading applications using wxWidgets.

Associated with: Kefas Softwares

$22.22 /hr
2,752 hours

Robert Nicholas

Robert Nicholas

Computer Science Student

United States - Tests: 2

I am an up and coming computer science student looking for possible data entry and or computer science entry level jobs I can do online. I have a basic understanding of Java, C++, and have used some OpenGL.

$10.89 /hr
2,213 hours

Juan Manuel Mejia Correa

Juan Manuel Mejia Correa

WEB and DBA professional

Colombia - Tests: 1

Over the last 4 years, I've been working as a software developer and consultant which gives me knowledge and experience in some of the most cutting edge technologies and methodologies. I have experience working with .Net C#, JQuery, Javascript, Ajax, LinQ to SQL, Spring, HTML, XML, Bizagi, BPM and many more. I also have worked with several design patterns approachs such as MVP and MVC. I'm fully compromised with following the best practices in all scenarios in my work to achieve the best quality and deliver excellent products.

$22.22 /hr
1,970 hours

Miguel G.

Miguel G.


Dominican Republic - Tests: 2 - Portfolio: 1

I am a salesforce administrator-developer wanting to learn and resolve problems. I am a very proficient English speaker,writer,and reader. I like to resolve users concerns and issues, making them feel satisfied with the work and I like to continuously keep up with the projects that I'm doing trying to find a way to better them and make the user feel comfortable. I am an experienced programmer in Java,C,and C#. Also I have managed different type of database managers like Oracle,MySql,Postgresql,and SQL. I also have skills as System Administrator in Linux Operating system.

$25.00 /hr
2,085 hours

Samer Saad

Samer Saad

Windows Server Administrator , Web Hosting , Parallels plesk

Egypt - Tests: 9

Over the last 12 years, i have been CEO "admin" for 2 web hosting companies , I am responsible for over 100 Windows ( 2008 & 2012 ) servers as windows administrator , managing webservers (IIS 6 , 7.5 & 8) , i have very good experience with windows servers administration "troubleshooting advanced IIS/Windows problems" and Parallels Plesk automation , i am looking for Windows servers administration jobs , seeking opportunities to manage web hosting business for both linux and windows servers running Cpanel and Parallels Plesk (Odin) . Microsoft Windows Server Certified Microsoft Networking Certified Windows Server 2008 Administration Certified Windows Server 2012 Administration Certified Field of experience : Windows Servers 2008, 2008 R2 & 2012 Web Servers: IIS Web server 6/7/8 Networking: TCP/IP, UDP, DNS, SMTP, FTP , DHCP, SSL, HTTP, HTTPS. DNS Services VMware Virtualization Active Directory, user and computer management Active Directory setup and maintenance Database: SQL 2005/2008/2012 . Group Policy Management Console (GPMC) NTFS File and Share permissions Windows Server Migrations Windows Server security Software Install Configuration: VB.NET, .NET 3.5 & 4.5 , SQL Server, Outlook Express .

$20.00 /hr
1,179 hours

Ivan S.

Ivan S.

Network Specialist

Croatia - Tests: 6 - Portfolio: 1

I work for Cisco Gold Partner as Network Security Specialist and have 8 years of experience in networking. My primary focus is Network security where i do design, implementation and maintenance of security products. - CCNA - CCNP Security - Expert knowledge of network security - Expert knowledge of routing and switching Experience with Cisco routers, switches and security solutions: c800, c1800, c2800, c3800, c4500, c6500, c7600, c12000, c2960, c3560, c3750, ASA, PIX, SCE Experience with PaloAlto firewalls: PA- 200, PA-500, PA-2000, PA-3000, PA-4000, PA-5000 Experience with technologies: NAT, HSRP, VTP, STP, VLAN, RIP, IGRP, EIGRP, OSPF, BGP, MPLS, IPSec, VPN Other vendors: Fortinet, Sonicwall, Dell, Sophos UTM

$27.78 /hr
1,059 hours