Network & System Administrators

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  1. 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
  2. Ambiorix Rodriguez Placencio

    Ambiorix Rodriguez Placencio

    Asterisk/PHP/MYSQL/Vicidial/FreePBX/Linux/Expert

    Dominican Republic - Last active: 1 day ago - Tests: 1 - Portfolio: 5

    Extensive, practical and relevant industry experience in the following area : -> Asterisk and FreePBX customizations. -> Custom Asterisk Development (PHPAGI,Bash Scripting). -> Hosted PBX Solutions (Amazon AWS, DIgitalOcean, SolarVPS). -> Complex IVR Solutions (Databases Integrations, Web App Integration). -> Call Center Solutions (Vicidial,Goautodial). -> Customized Broadcasting solutions. -> Technical Consultancy. -> Asterisk & MYSQL-PHP Integration. -> Asterisk Security (Fail2ban, IPTABLES). -> PHP&MYSQL Developer.

    $35.00 /hr
    14 hours
    5.00
  3. 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
  4. Alexander S.

    Alexander S.

    Windows, Linux, virtualization engineer

    Russia - Last active: 1 day ago - Tests: 4 - Portfolio: 10

    I specialize in servers administration (Microsoft, Linux) and virtualization technologies (Hyper-V, VMWare,Parallels), with clouds (Office 365, AWS, Azure) I can offer you not only the technical skills (in-depth knowledge of Windows and Linux architectures, local area networks), but also ideas that will contribute to raising the quality of your internal IT-structure. I believe that I can be helpful for your project. • Overall 12 years of work experience in IT. • Experience in building, upgrading and supporting virtual infrastructure based on VMware vSphere (ESXi, vCenter, VCOPS, etc.), Microsoft Hyper-V, VMware View. • Strong knowledge of the principles and technologies of providing High Availability and Disaster Recovery virtual infrastructure such as VMware HA, Fault Tolerance, (S)vMotion, Site Recovery Manager. • Rich experience in P2V (Physical to Virtual) and V2V (Virtual to Virtual) migrations of production customer’s services based on Linux and Windows using VMware vCenter Converter. • Experience in building physical server infrastructure based on HP and IBM server equipment (blade, rack-mount, storage). • Knowledge of the principles SAN and Ethernet networks. • Experience in auditing, troubleshooting and upgrading customer’s server infrastructure. • Working experience with technical documentation (writing and using). Last 8 years I worked in Oil company and Cloud provider company as one of the key specialists on the Teamlead and Senior System Engineer position. My skills can be divided to three main specializations: First of all, my strongest point is enterprise-level virtualization technologies VMware/Microsoft/Parallels: - VMware vSphere 4.0-5.5 - VMware (Horizon) View 4.6/5.0/5.2/6.0 - VMware vCloud Suite - MS Hyper-V 2008/2012 - Parallels Virtuozzo Second area it's Windows/Linux-based services administration: - Microsoft OS and Services: Windows 2003-2012(R2), Active Directory, DNS, DHCP, MS SQL, MS Exchange, Office 365, MS System Center series, Sharepoint - Enterprise infrastructure systems - Symnatec Netbackup, HP Insight Control, Parallels Automation - Service Desk systems OTRS, Kayako, MS Service manager, HP Service Desk - Unix-like OS and Services: CentOS, RHEL, Zabbix, DHCP, DNS, iptables, Apache, Nginx, PHP, MySQL, FTP, Samba The third area is enterprise-level server equipment HP/IBM: - HP Proliant, Blade system, SAN P-series - IBM System X - APC equipment

    $25.00 /hr
    2 hours
    5.00
  5. Anatoly Yuzefovich

    Anatoly Yuzefovich Agency Contractor

    Linux/FreeBSD/Administrator/Perl/Web-programing

    Russia - Last active: 1 day ago - Tests: 1

    I'm skilled Nix-administrator and perl developer with 10-year old experience. Administration: Linux, FreeBSD. Services ftp(proftpd,vsftpd,pure-ftpd), http(apache,nginx,lighttpd),dns,email,mysql and other services. Networking: Cisco systems devices (routing & switching). Network architecture. NAS/SAN: IBM, HP, NetAPP and work with Blade Systems (IBM, HP) VmWare vSphere virtualization. Perl programming: Web-programming - DBIx, dancer, plack, templates, modern perl, mojolicious. JavaScript - extjs, jquery, node.js, angular.js

    Associated with: Coderunes

    $33.33 /hr
    311 hours
    5.00
  6. Aleksey Zhuravlev

    Aleksey Zhuravlev

    Responsible skilled Web Developer, Javascript and PHP expert

    Russia - Last active: 4 months ago - Tests: 4 - Portfolio: 1

    I have over 5 years of experience in Software Development. Excellent in web application and data warehousing. • Deep knowledge of JavaScript, PHP and HTML/CSS (jQuery, Backbone, Handlebars, Express, Silex, Kohana, Smarty, Twig) • High experience in SQL and PL/SQL (MySQL, Oracle 11g) • High experience in VCS (subversion and git) • Experience in node.js • Experience in Apache httpd and nginx • Experience in mongoDB • Experience UNIX/Linux and Windows operating systems administration

    $27.99 /hr
    354 hours
    5.00
  7. Peter Hanna

    Peter Hanna

    SharePoint Architect, Workflow, Office 365 Expert

    Egypt - Last active: 2 months ago - Tests: 4

    Need some IT Magic, I'm your guy. ;) With my 8 years of experience in both the development and administration sides of IT business, I've learned to combine both skill sets with a strong analytical mind to create almost magical solutions to issues no one else could solve. I'm an 8 years of experience IT professional, I've administered and developed for almost all of Microsoft systems with most of its recent versions (OSC, Lync, Sharepoint, SQL, IIS, Active Directory, Exchange, Hyper-V....) I have been working on SharePoint development and SharePoint architecture for more than 8 years and I am very experienced with developing SharePoint features, SharePoint workflows, SharePoint web parts, SharePoint scheduling, SharePoint reporting, SharePoint customization, SharePoint configuration and SharePoint solutions. I also have been working on a lot of important SharePoint products and web portals. So, If you need to develop SharePoint portal, SharePoint workflows, SharePoint customization, SharePoint integration, or SharePoint solutions please feel free to contact to me. I'm also specialized in SQL administration and development.

    $20.00 /hr
    292 hours
    5.00
  8. Syed M.

    Syed M.

    Java EE Developer

    India - Last active: 03/28/2012 - Tests: 2

    I have seven years of experience working as a Software Engineer and System Administrator in the United States. During this time, I have played a leading role in every aspect of the software development lifecycle, from requirements gathering and design to deployment and maintenance. I have developed both desktop and web applications. I am also a Sun Certified Java Programmer and OMG-Certified UML Specialist.

    $33.33 /hr
    588 hours
    5.00
  9. Mihail K.

    Mihail K.

    UNIX/Linux administrator

    Belarus - Last active: 3 months ago - Tests: 5

    I love UNIX! I love one-line shell scripts! I work with Debian, RedHat, HP-UX. Little with OpenSolaris and FreeBSD. I have experience in creating and supporting monitoring systems based on Zabbix and Nagios (several tens of servers with different OS). I am well familiar with network protocols and tools for testing and troubleshooting (wireshark, tcpdump, nmap, traceroute, etc.). I have experience in creating secure VPN tunnels based on OpenVPN, IPSec, L2TP/IPSec, GRE and PPTP. I was installing and configuring lighttpd, apache httpd, nginx, exim4, dovecot, samba, OpenLDAP, etc. I have experience with creating mail servers used in hosting company for many customers. I was working with virtualization Xen, KVM, VMware. Have experience with cloud services like Amazon EC2. I have experience in installing and configuring Oracle 10g, 11g, PostgreSQL, MySQL.

    $16.67 /hr
    88 hours
    4.97
  10. Juan Manuel García Del Moral

    Juan Manuel García Del Moral

    Sr Unix/Linux Management and Infrastructure Expert

    Argentina - Last active: 11/09/2014 - Tests: 2 - Portfolio: 6

    I have 12 years of experience in Unix/Linux Administration and Development. During this time, I've developed professional solutions using the following technologies: Linux, Unix, Perl/Bash Scripting, Apache, MySQL, PHP, Tungsten Replicator, XEN, VMWARE and more. My main goal is to become your preferred IT partner when you need to get any project done. I want to build a strong and long term working relationship with increasing benefits to both parties. I strive on customer satisfaction regarding: - Time and Cost Effectiveness - Quality Assurance - Outstanding product performance - Fluent and Friendly Communication - Availability.

    $25.56 /hr
    329 hours
    4.92