Network & System Administrators

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  1. Bogdan daniel S.

    Bogdan daniel S.

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

    Romania - Last active: 19 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
    2,642 hours
    4.68
  2. 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
  3. 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
  4. Konstantin Mineev

    Konstantin Mineev

    Expert WEB administrator and developer

    Russia - Last active: 2 days 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
    62 hours
    5.00
  5. 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
  6. 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
  7. Sergey Aleynik

    Sergey Aleynik

    Android developer and network engineer

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

    Software and network engineer with 11+ years experience. Highly motivated self-organized professional. Mobile Apps Development (Android) Comprehensive knowledge of network client-server communication. Quick learner, able to integrate easily into teams, has the ability to design and implement solutions to complex problems. Technical skills include: - Core Java programming - Java collections, java concurrent - Multi-threading - Android SDK (Fragments API, SQLite, UI, Widgets, etc…) - ORMLite - Volley - Roboguice - Material design - Animations - Custom UI components - Git - Google Play - AdMob - Linux - FreeBSD - LAMP - xen-hypervisor - Postfix mail server - Bacula - Cisco ( routers, switches, VoIP, WIFI ) - Avaya(VoIP, DECT) - Asterisk - network protocols(SMTP, HTTP, FTP, etc.) and formats(JSON, XML, etc.) - Windows network services. - Windows OS.

    $20.00 /hr
    0 hours
    5.00
  8. 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
  9. 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
  10. Ioan alexandru T.

    Ioan alexandru T. Agency Contractor

    Network and System Engineer

    Romania - Last active: 1 day ago - Tests: 7 - Portfolio: 4

    I am an energetic, well-spoken and capable Network & System Administrator with expertise in Linux Server Administration and Network equipments. I enjoy working on all things IT related, and I have extensive experience of resolving Linux server problem and also network related problems. My key strengths include, but are not limited to: - WebServers: Nginx, Apache, Tomcat; - Databases: MySQL, MariaDB, CouchDB; - Mail Servers : Postfix, Dovecot, Qmail, DBMAIL; - FTP: Vsftpd, ProFTPD, Pure-FTPD; - VPN: OpenVPN, PPTP; - Firewall: csf, afp, custom iptables firewall; - Backup Solutions; - Proxy Servers; - Bash Shell Scripting; - Web Security (PHP Security php_suhosin, Apache Security mod_Security, OS Security (malware detection), Antivirus (clamav)); - - Traffic Control Scripts based on TC; - Monitor Technologies; - TCP/IP, VLANS, Routing Protocols - (RIP, EIGRP, OSPF) I have CCNA Certification and during time I had participate to online courses to improve my experience in Linux, Security, Firewalls. I will bring to your company or project fresh ideas, new perspectives, a diversity of experiences, and a dedication to service.

    Associated with: MoonQuake Agency

    $11.11 /hr
    2,586 hours
    5.00