Network & System Administrators

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  1. Muhammad Ikram

    Muhammad Ikram

    OpenX, JIRA Expert and Systems Engineer

    Pakistan - Last active: 1 day ago - Tests: 4 - Portfolio: 4

    A highly efficient, methodical and talented IT professional having considerable experience of developing, implementing and managing networks, data centres, servers and virtual servers. Possessing a broad range of developed skills gained through establishing full IT projects, networks and infrastructures, website design and development from initial conception to completion, including customer liaison, design, testing and successful implementation within budget, scope, timescales and process limitations in a customer focused, multi-site business environment. Extensive LAN/ WAN/ Hardware/ Software experience. Pro-active approach to working cross-functionally, maintaining the delivery of I.T. services and technology projects. I have extensive experience particularly in OpenX (Revive Adserver), AWS, JIRA and Server Administration.

    $30.00 /hr
    1,448 hours
    4.99
  2. Mykhaylo Dobrovolskyy

    Mykhaylo Dobrovolskyy

    Mykhaylo Dobrovolskyy

    Netherlands - Last active: 2 days ago - Tests: 7

    10+ years of Linux/Network experience with different systems. Finished and delivered SMB solutions to big corporate companies lie BNP Paribas, ABN AMRO or RBS. My main areas of knowledge are: 1) Networking (Cisco/Juniper/F5/BlueCoat and Linux/FreeBSD based solutions like vyatta/pfsense etc) 2) Security - Cisco IPS/IDS, CheckPoint, Linux/FreeBSD based, Juniper etc 3) Linux administration - mail system, database (mysql/mysql cluster), server with high load average, load balancers for server farms (Cisco/F5 based and Linux based like keepalived or apache/nginx with reverse proxy) 4) VoIP - Cisco/OpenSource(Asterisk and different installations based on asterisks like freepbx/elastix etc) There is a very small piece of my knowledge, I'm always looking for opportunity to grow and I'm pretty sure that if you give me tasks - I'll find out best way howto get it done.

    $27.78 /hr
    4,749 hours
    5.00
  3. Roman Gorokhov

    Roman Gorokhov

    Expert FreeBSD/Linux Administrator

    Spain - Last active: 1 day ago - Tests: 6

    • 15+ year’s experience in the IT field. • Deadline conscious on all projects and assignments. Resolved IT related issues and concerns under strict deadlines. • Proactively implemented enterprise project deliverables at basic to intermediate levels. • Provided installation, configuration and maintenance of UNIX -based systems for different tasks: http, mail, ftp, dns, proxy, firewalls, smb, backup; web applications – from postfixadmin tо sugarcrm. BSD, Linux, Solaris, QNX. FreeBSD is my favorite. • FreeBSD Port contributor.

    $25.00 /hr
    111 hours
    4.82
  4. Bogdan daniel S.

    Bogdan daniel S.

    VCP, MCSA, Exchange, Vmware, HyperV, Servers Expert Admin

    Romania - Last active: 1 day ago - Tests: 8 - Portfolio: 1

    10+ years experience in Information Technology (IT) Major areas of expertise: VMware and Microsoft virtualization technologies. Designing and implementing fault-tolerant virtualization clusters SAN and NAS systems (iSCSI, FC) Windows 2003 / 2008 / 2012 Server * Active Directory * Microsoft ISA Server and TMG * Clustering * MS Windows XP/Vista/7/8 desktop/workstation operating systems * Centralized anitivirus systems WSUS * TCP/IP, Switching and Routing * Firewalls IBM, HP, Dell Servers * DNS, DHCP, Wins * Print Server * File Server * Network and Servers documentation * LAN hardware/software administration, design, installation and configuration * Print Server * LAMP Administration * Linux services : squid, postfix, dovecot, firewall, ldap, mysql, nagios, dhcp, bind etc Certifications: MCP - Microsoft Certified Professional MCSA - Microsoft Certified Systems Administrator VCP - Vmware Certified Professional VCP-510 * VCA-DCV - Vmware Certified Associate Data Center Virtualization.

    Groups: Microsoft Certified Professionals

    $22.22 /hr
    2,644 hours
    4.68
  5. Sergey Kogut

    Sergey Kogut

    Sr Windows and Linux Systems Admininstrator

    Ukraine - Last active: 2 days ago - Tests: 1

    Hello, I'm a System Administrator with 11+ years experience. I have worked earlier with hosting companies like hostpro.ua, 1gb.ua, hostclear.com, justhost.com and SingleHop.com. I've great experience with WordPress, cPanel/WHM, Plesk and server configuration (Bind, Postfix, Apache, MySQL, FTP and etc) + Virtualization OpenVZ Also I know CentOS and Ubuntu rather good (installation and configuration of software like ffmpeg, 3dproxy, Maldet, OpenVPN, Bugzilla and etc) Also I've a good experience with Nginx + PHP-FPM + Nginx Cache + Varnish Cache Currently I work remotely as a system/server administrator at RipaMedia Inc. I love my job and also I like to help people like you :)

    Groups: Bluehost Developers and Designers

    $22.22 /hr
    138 hours
    4.90
  6. Andrey Semenischev

    Andrey Semenischev

    Expert in PHP coding and MySQL optimisation

    Russia - Last active: 2 days ago - Tests: 14

    I'm WEB programmer. I have more than 12 years expierence in site-creation field. I work with PHP, Smarty, MySQL, JS, HTML, Linux adminstration (httpd, mysqld, iptables etc.). I have developed and changed a wide range of websites and backend systems. I also have a rich experience in AJAX, OOP, software testing. Feel free to work.

    $38.89 /hr
    1,670 hours
    5.00
  7. Asif Gohar

    Asif Gohar

    System, Network, Active Directory, Exchange, Backupexec, System Center

    Bahrain - Last active: 1 month ago - Tests: 5 - Portfolio: 5

    Knowledgeable and skilled IT professional with encompassing work experience spanning more than 8 years in systems administration with compliance as per industry standards. Possess excellent interpersonal skills to liaise amicably with diverse groups of people, different departments, vendors and agencies. With extensive exposure to different cultures and work environments and has worked effectively with multinational individuals and professionals from all organizational levels. Certifications: MCITP (Server 2008, Exchange 2010, Lync 2010) Expertise: Exchange 2007/2010, Active Directory 2003/2008, SCCM, SCOM, DPM, SCVMM, BackupExec,Enterprise Vault, WSUS, Lync, Server 2003/2008, ADRMS, SQL Server, SAN/NAS.

    Groups: Microsoft Certified Professionals

    $20.00 /hr
    270 hours
    4.95
  8. Vladimir Pavlov

    Vladimir Pavlov

    Expert Web Developer - PHP/MySQL/AJAX/CodeIgniter/Jquery

    Ukraine - Last active: 2 days ago - Tests: 1 - Portfolio: 2

    I'm experienced PHP Developer (8+ years) in IT industry. I'm looking for opportunities to work with possible clients for challenging projects using PHP/Mysql, PHP OOP programming, AngularJS, Ajax, RESTful API Implementation, Data Visualization, jQuery etc. I know it's frustrating to work with flakes, frauds and poor communicators; that's why I'm dedicated to reliability, clear communication and professionalism. I hope you to understand that your project is important to me and deserves my attention and dedication. I have powerful skills in PHP, MySQL, AJAX, javascript. Known frameworks php: Codeigniter, Kohana, Symfony2 Known frameworks js: Angular.js I create and upgrade corporate billing system. Development softwares for SetTopBoxes. Creating Samsung SmartTV apps. I have beginner knowledge on android sdk. Knowledges on creating multithreading php scripts knowledges on node.js. Development standalone service on node.js for contol multicast channels. Mysql database administration and etc. Thanks, for your attention!

    $15.00 /hr
    14 hours
    5.00
  9. Joshua C.

    Joshua C.

    Security-focused IT Admin & Developer

    United States - Last active: 9 days ago - Tests: 1

    I worked as senior software developer for a high-tech security corporation for 2 years (and still do consulting with them) and have been a developer for 6 years. I was responsible for their security audits and testing of their SaaS apps. I developed many cryptography-focused applications and wrote dozens of integration projects for cryptographic hardware tokens. I'm familiar, and up to date, with modern hash schemes (ie. SHA2, MD5), symmetric/block algorithms (ie. AES), and asymmetric algorithms (ie. RSA) and best practices. I practice secure programming in all of my projects and always follow best practices to ensure the final result is of the highest quality. I'm well-versed in PHP, HTML5, CSS, JavaScript (including jQuery, Angular, and Node), Bootstrap, PhoneGap / Cordova, WordPress, and ASP.NET. I also run a security-focused blog (https://joscor.com) and provide security audits for large state agencies in the area.

    $60.00 /hr
    62 hours
    5.00
  10. Don Blake

    Don Blake

    Virtualization / Citrix Expert

    United States - Last active: 3 days ago - Tests: 3

    Hi, my name is Don Blake, I am US-BASED and have been in the IT field for 17 years. During that time I have been a Senior Solution Architect for some of the big name consulting companies Architecting and Configuring solutions around VMware (View, vCloud, Site Recovery Manager), Citrix (XenDesktop, XenApp, Netscaler, PVS) and Microsoft (Hyper-V, System Center Suite, Exchange, AD, Sharepoint, many more). I have worked for Big Enterprise size companies to small start up companies. My expertise is in the Virtualization arena with knowledge ranging from Storage to Microsoft products. I not only like to help clients design and troubleshoot any issues, but also like to teach them the ins and outs so they understand what is happening. I am also very big into documentation and communication. I want to make sure you are comfortable and have more information than you need. Look forward to working with you. Specialties: VMware vSphere Design and Architect VMWare vCloud Design and Architect Citrix Xenapp Design and Architect Citrix XenDesktop Design and Architect Citrix XenServer Design and Architect VMWare View Design and Architect Microsoft System Center Design and Architect Microsoft Hyper-V Design and Architect Quest vWorkspace Design and Architect Microsoft Technologies

    $66.67 /hr
    171 hours
    5.00