Network & System Administrators

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  1. Mykhaylo Dobrovolskyy

    Mykhaylo Dobrovolskyy

    Mykhaylo Dobrovolskyy

    Netherlands - Last active: 3 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
    4,738 hours
    5.00
  2. Bogdan daniel S.

    Bogdan daniel S.

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

    Romania - Last active: 23 hours 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
    2,643 hours
    4.68
  3. Ferenc S.

    Ferenc S.

    Wordpress/HTML/CSS Expert - Linux System Administrator

    Hungary - Last active: 3 days ago - Tests: 7 - Portfolio: 17

    Main areas of my expertise: » CMS systems (Wordpress, Joomla, Drupal, etc.) » HTML and CSS » Linux system administration (Debian, CentOS, Ubuntu, etc.) » Site moving/migration (Wordpress, Joomla, Magento, Prestashop, etc.) » Malware removal / cleaning infected sites » Site speedup / optimization (Improving Pagespeed score, reducing load times, setup caching, CDN, etc.) • Web design/developing: Over the last 5 years i've developed a wide range of websites for startup companies, small businesses and individuals. My favourite platforms are Wordpress and Joomla but i work with other CMS systems too. I'm familiar with the most popular components and plugins and i have very good problem solving skills. Besides that, i'm a HTML and CSS expert and i use these skills every day. You can find some of my work in my portfolio (I'll try to update it often). I also have experience in E-Commerce systems and SEO. • System administration: I installed, configured and managed many servers in the past. I'm familiar with FreeBSD, Debian, Ubuntu, CentOS and almost any other Linux distribution. I know how to install and configure a LAMP server and i'm good with web hosting panels, system security, Apache, E-mail systems and almost everything related to Linux servers. Try me and i won't fail you! I'm a fast, professional and reliable candidate who always stick to deadlines. My first objective is to satisfy my employer not to make money (Look at my ratings and see for yourself). I'm here because i'm seeking the opportunity to find the job(s) which suits me the best, leads me forward and helps me improving my skills.

    $16.67 /hr
    443 hours
    4.99
  4. Marius V.

    Marius V.

    Certified Systems Engineer

    Romania - Last active: 1 day ago - Tests: 2 - Portfolio: 2

    I am a System Administrator focused on Microsoft products with 8+ years of professional experience on IT companies. I have extensive experience installing, configuring, administering and maintaining operating systems (Windows Server 2003, 2008, 2012) and services like AD, DNS, DHCP, WDS, Hyper-V, Exchange, SCCM, SCOM. Time spent working in this area has allowed me to achieve knowledge and improve my skills in computing that would make me well suited to assist you in accomplishing your goals. I work methodically and efficiently to insure that my partner is satisfied with the end result and the cost of job is well justified.

    $25.00 /hr
    127 hours
    4.97
  5. Konstantin Mineev

    Konstantin Mineev

    Expert WEB administrator and developer

    Russia - Last active: 23 hours ago - Tests: 2 - Portfolio: 1

    I have work experience in developing and maintaining web sites based on Microsoft IIS 6/7/7.5 platform, Asp, .Net: Writing PowerShell 2.0 / Quest AD scripts to automate tasks. Scripting expirience with Amazon EC2, S3 services. Adjustment and optimization IIS (including cluster systems). Configuration, optimization, replication of databases MS SQL. Configuring servers in a virtual environment, Hyper-V, VMware, Amazon EC2. Configuring network devices (Kerio, Cisco, Linux). Preparation of specific reports on infrastructure. Maintaining SharePoint applications (MOSS 2007 and SharePoint 2010). I have been involved in major high load web projects and I have the ability to interact with foreign colleagues to meet the challenges of ongoing the projects.

    $10.00 /hr
    63 hours
    5.00
  6. Vladimir Pavlov

    Vladimir Pavlov

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

    Ukraine - Last active: 23 hours 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!

    $11.11 /hr
    14 hours
    5.00
  7. Sergey Golovchenko

    Sergey Golovchenko

    DevOps/System/network administrator

    Ukraine - Last active: 1 day ago - Tests: 4

    My goal is providing only hight quality service. If you have any IT task - ask me, and I'll provide complex solution. Filed of my expierence covers, but not limited to: OS: varios Linux (Ubuntu/Debian/CentOS and other), FreeBSD SCM: Puppet Web servers: Apache, Nginx Database servers: Mysql and clones, Postgresql Monitoring: Nagios, Zabbix (preffered),Cacti Virtualization: Openvz, XEN and XenServer, KVM Cloud services: AWS, Rackspace Scripting: bash, python. Mail servers: postfix, dovecot, exim, sendmail and many others Networking: standard network services (DNS, DHCP, Samba, SVN/Git, http proxy, jabber, VPN, backups, monitoring etc), firewalls and routers (iptables, iproute, VLAN, bridging, bonding, BGP, OSPF), different hardware (Cisco, Extreme networks, mikrotik and many other) PS: This list isn't full, as long lists looks ugly :) Also I'm very interesting in development/DevOps task's, especially python development.

    $35.00 /hr
    227 hours
    5.00
  8. Vikas S.

    Vikas S.

    Expert Web Developer & Designer (Work live in US time zone)

    India - Last active: 5 days ago - Tests: 6 - Portfolio: 76

    + 5 Years experiences in software development + Your passion and my value, It will make great result + Quality-oriented, Enthusiastic-attitude + Deliver guaranteed quality software within deadline + Outstanding problem solving and decision making skills + Unlimited enthusiasm for self-training + Full time available 15+ hours a day, in any timezone like PST and EST + Eager to get new technologies for future My skills are: • Graphics Design • Logo Design • Banner Design • Calligraphy Design • Php/Mysql with ajax & jquery • Wordpress • Joomla • Magento • Opencart • Cakephp • CI • Laravel • Bootstrap • Polymer • SEO • Internet Marketing I am waiting for you! Just write me! Thanks & Regards Ethan Hawke

    $16.67 /hr
    45 hours
    5.00
  9. Vladimir Laskov

    Vladimir Laskov

    Linux and FreeBSD Systems Architect

    Russia - Last active: 4 days ago - Tests: 9 - Portfolio: 1

    Specialties: Architect, RHCE, DevOps, Performance, Scalability, Redundancy / Fault Tolerance, High Availability ( CARP, HSRP, VRRP, DRBD, HAST ), Network Security, Troubleshooting, Solaris, OpenBSD, FreeBSD, Linux ( RHEL, CentOS, Ubuntu, Debian, SUSE ), Nginx, Apache, PostgreSQL, MySQL, Postfix, Dovecot, Asterisk, GIT, Jenkins, iptables, PF, IPFW, Nagios, PHP, Ruby, Java, Python, Perl, IPSEC, SSL, VPN, VMWare, SAN, ZFS ... Started out with a Sinclair ZX-Spectrum. Over 10 years of experience in IT area, including 6 years in Senior System Administrator. positions. Expert in Unix-based systems (5 years), advanced person in database administration (3 years). Person with strong analytical and troubleshooting skills, strong team building skills, well developed management skills, interpersonal skills.

    $25.00 /hr
    0 hours
    5.00
  10. Grigory Kuznetsov

    Grigory Kuznetsov

    System Engineer

    Russia - Last active: 15 days ago - Tests: 4

    Qualified Cisco Academy Instructor (CCNA). 14+ years of work in field of IT. My main skills are: LAN & WAN design and deployment. Network equipment management - CISCO, HP, D-Link; network design, load balancing, backup strategy, monitoring. Data Center equipment management – computing systems, power distribution, cabling, air preparing. Administration of Microsoft Windows NT/2000/2003/2008/2008R2/2012 server OS (AD, DNS, DFS, DHCP, WDS, RDP, TS, clustering and load balancing). Administration of all Microsoft Windows client OS. Administration of Linux Red Hat/Cent OS (iptables, samba, squid, nginx, apache+mysql(optimization, DDoS mitigation)). Administration of VMware vSphere (ESXi + vCenter). Comprehensive monitoring using Zabbix.

    $15.00 /hr
    9 hours
    5.00