Network & System Administrators

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  1. Abdullah Bin Hussain

    Abdullah Bin Hussain

    Expert Virtual Assistant & Web Researcher

    Bangladesh - Last active: 1 day ago - Tests: 15 - Portfolio: 54

    Are you spending too much time managing projects, instead of growing your business? Can't afford full-time staff? Well, if the answer is yes...then let the expert do the work for you. CONGRATS!!! YOU ARE AT THE RIGHT PLACE.... I am the ONE probably you are looking for your project. I can provide you the following services: 1. Virtual Assistance 2. Web Research 3. Data Entry 4. Data Processing 5. Data Mining 6. Web Design 7. Website Management 8. SEO Consultancy 9. Social Media Marketing 10. E-mail Marketing and so on... Areas of my expertise are: 1. Research, Data Collection/Data Mining 2. Data Entry/Data Processing 3. HTML+CSS, Wordpress 4. Magento. Shopify, Opencart, Zencart, Amazon, eBay 5. Open CRM, Zoho CRM 6. Mailchimp, Aweber 7. Photoshop, Illustrator 8. MS Office, Open Office 9. Online File Management System 10. Team Collaboration: Open Atrium, Teamlab etc.

    Groups: Bluehost Developers and Designers

    $15.00 /hr
    3,964 hours
    5.00
  2. 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
  3. 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
  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. 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
  6. 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
  7. 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
  8. Anatoly Yuzefovich

    Anatoly Yuzefovich Agency Contractor

    Linux/FreeBSD/Administrator/Perl/Web-programing

    Russia - Last active: 11 hours 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
    314 hours
    5.00
  9. William Grzybowski

    William Grzybowski

    (Web)Development and Unix-like Consultant

    Brazil - Last active: 07/09/2014 - Tests: 7 - Portfolio: 2

    Before I even go to university i started working with Web-development. My first experience was about 6 years ago with pure HTML using frames in Dreamweaver 3. Since then I have worked hard to improve my skills in every way possible, not just as a web-developer but as a general programmer, and now I work essentially with Open Source software like Python(+Django), PHP, Linux/FreeBSD, PostgreSQL, etc.My degree in computer science helped me to understand the basics of a computer from the bits in the processor instructions to multimedia, and thus can be used everywhere to improve the final result of a project.

    $33.33 /hr
    3,500 hours
    5.00
  10. Oleksandr Moskalenko

    Oleksandr Moskalenko

    Operations Engineer

    Ukraine - Last active: 10/17/2014 - Tests: 7 - Portfolio: 5

    Over last years i worked as Operations Engineer, Team Lead. I was involved into several network, web and mobile projects. Worked for large enterprises and startups. Have an experience working with different network equipment, OS and software. I use different technologies in my work and open to discuss on what to use and why.

    $33.33 /hr
    53 hours
    5.00