Network & System Administrators

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  1. Esteban Hernandez

    Esteban Hernandez

    Esteban Hernandez

    Costa Rica - Last active: 10/09/2014 - Tests: 5

    General Overview Linux Administrator with 5 years experience I am seasoned enough to know to acknowledge when I do not know something, or do not have the answer. There is never “one way” to do something, and no matter how a problem is solved, there is always a better solution. Enjoy challenges and learning. I will not charge for learning general technologies that have application beyond a contracted project. I believe in the power of the web. I believe in the power of cloud computing, and SaaS. Willing to do oncall 24x7 immediate availability. Experience Cloud Services: Amazon Web Services EC2 Elastic IP Console Manager I have recently completed a number of production server deployments to Amazon Web Service (AWS). Each migration included building a new AMI as well as exports/imports of production data. SVN migration to AWS (centOS) dotProject migration to AWS (centOS) Bugzilla migration to AWS Linux (Centos, Ubuntu, Solaris, Suse, Red Hat) Worked for software development company for 4 years maintaining and deploying a wide variety of systems and applications including: LAMP, Bind DNS, PHP, apache, mysql, LDAP, Nagios, Cacti, fortigate firewalls, Joomla, wordpress, Plesk, Jboss4, Tomcat, Oracle, PXE Installs, Vmware, Virtual Box, red hat spacewalk, Bacula, Oracle and Mysql migrations, shell scripting and general sys admin work maintaining and monitoring the data center with over a 100 servers. HP (Technical Account Manager): 1 year experience handling Level 3 linux cases with US based customers, main point of contact between HP and the clients communicating via Email, phone or video chat, helping them resolve the cases from beginning to end engaging engineers from 3rd party software if required and keeping constant communication between the parties.

    $22.22 /hr
    71 hours
    5.00
  2. Jozef Knaperek

    Jozef Knaperek

    Full-stack SW developer and security specialist

    Sweden - Last active: 06/20/2014

    I'm an engineer with master's degree in Computer and Communication Systems and Networks, with the following experience: - software design & development - network design, configuration, troubleshooting - linux administration - IT security I'm an expert in C, C++, Python, Django and have a good understanding of other common languages. I believe that code should be clean and optimal, which is always my priority. I'm a big fan of digital currencies (Bitcoin) and love to work on projects related to this topic. I speak English, Slovak and Czech.

    $44.44 /hr
    130 hours
    5.00
  3. Karolina K.

    Karolina K.

    HR Strategist/ Personal Assistant-experience with 3 major corporations

    Slovakia - Last active: 01/05/2014 - Tests: 3 - Portfolio: 1

    Recruitment and Training Specialist with extensive experience in Human Resources I have been employed as a telecommuter, salaried employee, working out of my home for 3 different companies for 5 years very successfully. Currently looking to expand and take on independent clients and new projects. Proficient in all major business/office admin duties, fluent in English, Romanian, Slovakian ... also, moderate to fluent in Italian, Spanish, Hungarian. Skill sets and tasks worked on are extensive. Please contact me with the specifics of your company needs and I'd be happy to let you know whether I feel I can confidently fulfill the necessary tasks efficiently, quickly and profitably.

    $16.67 /hr
    188 hours
    5.00
  4. Robert M.

    Robert M.

    Networking/VoIP/Build/Test/SQA Professional

    United States - Last active: 11/22/2014 - Tests: 4 - Portfolio: 1

    I'm proficient in networking (Cisco - working on CCNA), operating systems (Linux, UNIX, Windows, MacOS and a few others) as well as Open Source PBX systems such as Asterisk, Trixbox, FreePBX, Elastix and PBXInAFlash. I have done extensive SQA (software testing) as well as scripting (bash) for administration of various servers. I can code in Python, PHP and some Java and Java Enterprise. I've worked extensively with Jenkins for build/deployment environments. I'm quite skilled with web application type servers, including Apache, Tomcat, JBoss, as well as various mail relays - Postfix and Sendmail. When it comes to security, I'm quite proficient at the command line with iptables as well as some open source type firewalls (Sonicwall). I am no stranger to packet analysis/sniffing a network with tools such as Wireshark, ettercap and nmap.

    $25.56 /hr
    118 hours
    4.60
  5. Faisal Naeem

    Faisal Naeem

    Linux/Web Hosting/Mail/DNS/NMS Server Administrator, IT Support

    Pakistan - Last active: 12/07/2014 - Tests: 17 - Portfolio: 8

    An experienced Linux System Administrator with skills in CentOS/RHEL/Ubuntu/Fedora Server/VPS Configuration, Administration and Troubleshooting plus L2/L3 support expertise. I am having hands-on expertise to Mail / Web Hosting / Virtualization / Network Monitoring / Media Streaming / OpenGTS / DNS / FTP / Backup / Firewall Servers, Data center Administration and Server Security measures. My exposure to Amazon EC2, Linode, GoDaddy and Hostgator physical/virtual server environment is quite good. I am looking forward to utilize my experience and technical skills to offer quality work with client’s contentment. Possessing 08 years experience in Information Technology including 3.5 years experience in as System Administrator in Data Center (Systems Team) and currently working as Manager (Linux Systems). I have experience in administration of heterogeneous network with a variety of open source tools to provide an excellent IT infrastructure for organizations.

    $18.00 /hr
    12 hours
    4.70
  6. John Kattenhorn

    John Kattenhorn

    Highly motivated software architect, multi-disciplined .NET developer

    United Kingdom - Last active: 3 months ago - Tests: 1 - Portfolio: 9

    Highly motivated software architect, multi-disciplined developer and entrepreneur experienced in delivering creative, software applications using .NET on the Web, Mobile and Cloud. Passionate about building world-class applications using Microsoft technology. An experienced technical leader using modern software technologies, methodologies and best practice, to solve business problems whilst lowering software lifetime costs. Skills: .NET, Windows Azure, Xamarin Specialties: Software Architecture, Software Development, Cloud and Mobile Computing, Devops, Technical Governance, Best Practices and Principals, Agile Methodologies.

    $100.00 /hr
    1,613 hours
    4.63
  7. Giorgi Javakhidze

    Giorgi Javakhidze

    MCITP | Vmware | Windows - Linux Systems Administrator

    Georgia - Last active: 12/17/2013 - Tests: 6

    In the last 3 years, I have administered many IT networks, managing over 1000+ users. My core competency lies in complete managing of windows - linux based networks, including Active Directory, Exchange, MS-SQL, virtual clouds, based on VMware / Hyper-V and EVA Storage Area Network. I have deep experience in the following software solutions: Basic server services ( DNS, DHCP, WSUS, Vpn, etc. ) Windows 2003/2008 Server Windows 2003/2008 Active Directory Lync Server, Exchange Server, SharePoint Server. Monitoring: SCOM, Nagios Web Server: IIS, Apache Mail Servers : MDaemon, Postfix. Database: MSSQL, MySQL. Proxy / firewall solutions ( Squid, TMG, ISA ) VMware vShere and vCloud: ESXi, vCenter, vCloud Director, vShield

    $15.00 /hr
    183 hours
    5.00
  8. Avi Lugassy

    Avi Lugassy

    Competent Web developer

    United Kingdom - Last active: 2 months ago - Tests: 1 - Portfolio: 7

    My objective in web development is to create cutting edge web technology at affordable costs. Ensuring the highest possible quality I am able to build from scratch for any need. Owning my own large PHP, dynamically driven website I am always writing content and pushing our technology forward. I want to expand my services to you. I am able to offer skills in the following areas: PHP SQL Javascript (JQuery) Ajax Json Css html xml Server management. VPS (setup and management.) Application installation for Linux based servers Domain name management Name server and MX server management SEO

    $50.00 /hr
    44 hours
    4.60
  9. Nitesh P.

    Nitesh P.

    Full-Stack Web Developer

    Nepal - Last active: 11/26/2014 - Tests: 8 - Portfolio: 1

    I have been a professional web developer since 3 years now and a freelancer since 6 years. I have myriad of experience on sites big and small. I use the best of technologies to deliver solution quickly, reliably and in a cost effective manner. I am driven and motivated and can handle responsibilities well. I am only available for short term projects that do not require full time availability.

    $27.78 /hr
    489 hours
    4.97
  10. Omar Valadez

    Omar Valadez

    Software Architect

    Mexico - Last active: 2 months ago - Tests: 5 - Portfolio: 1

    13 years of professional experience in the full life cycle of software development projects for financial, insurance, and government companies. Client-server core banking, Insurance systems experience, CRM systems. Software Architect and Project manager in Java and Microsoft Development Tools, including desktop and web apps. I also have some experience in the following areas: - OOP, Web Services. - Microsoft .Net Frameworks ASP .Net,VB .Net, C#, MVC, WCF, WPF. - Java - PHP and MySQL. - Databases Administration in : MySql 5, Microsoft SQL Server 2005, 2008 and SyBase 11, Oracle 11. - Window Server Administrator 2003,2008 VPN, IIS,Active Directory, - Exchange Server. - Linux Server Administrator for services :FTP,DNS, OpenVPN, Samba,Firewall in distributions : Mandriva, OpenSUSE, Fedora. - Automatic testing with Smartbear TestComplete automation software. - jQuery and Prototype Javascript - VPS, shared hosting, DNS configuration, Cloud computing.

    $22.22 /hr
    6,568 hours
    5.00