Network & System Administrators

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  1. Eugene Shershen

    Eugene Shershen Agency Contractor

    Python/Django/Node.js Developer

    Ukraine - Portfolio: 4

    - Python (Django, Flask, twisted, tornado, gevent) - Node.js (Express, sailsjs, socket.io) - Golang - Experience in developing of highload REST-services - Excellent knowledges and experience in developing in Linux/FreeBSD/OS X - MongoDB, PostgreSQL, MySQL, Firebird, SQLite, redis, memcachedb, tarantool - Experience in developing of multithreading (pthereads) and asynchronus servers and daemons - Development with git version control systems

    Associated with: SOFTREACTOR LLC

    $15.56 /hr
    0 hours
    0.00
  2. GABRIEL MEDRANO

    GABRIEL MEDRANO

    VMware Systems Engineer

    United States

    • Design and administration of VMware vSphere 4 & 5 Enterprise Plus hosting 1000+ Linux and Windows virtual machines on hosts across multiple sites • Design and configure VMware vSphere 5 components such as High Availability (HA), Distributed Resource Scheduler (DRS), vMotion, Distributed Virtual Switch (DVS), Host Profiles, Storage I/O Control (SIOC) and Network I/O Control (NIOC) • Design and administration of Lab Manager 4.x to support 400+ virtual machines • Understanding of SAN architecture and implementation as it relates to virtualization (NetApp, IBM XIV, EMC Clariion and VMAX) • Design and Administration of 25+ HP C7000 blade chassis, Virtual Connect Flex-10 configuration in support of Linux, Windows, and VMware blades • Citrix XenApp 5 & 6.5 (Windows 2003/2008) administration hosting 90+ applications utilizing Web Interface , Netscaler, and SQL datastore backend for internal and external customers • Design and Administration of Citrix XenDesktop 5.5 integrated with XenApp, Netscaler, and Access Gateway • Citrix farm consolidation and decommission • Create and manage Active Directory and Group Policy Objects to include DNS • All manners of Windows 2003 and 2008 Windows Server administration • Produce processes and procedures for system administration • Troubleshoot and resolve utilizing analytical skill set amongst a distributed and complex environment to include DNS, Firewall, Active Directory, SMTP, TCP/IP, and various network related issues • Excellent communications skills and rapport with fellow teammates. Ability to work as a team or independently

    $88.89 /hr
    153 hours
    0.00
  3. Gerry Litwin

    Gerry Litwin

    Senior Application Developer

    United States - Tests: 1

    Highlights: Demonstrated record of high performance standards, including attention to detail, schedules, deadlines, budgets and quality work. Extensive experience in: Visual Studio (2005-2013) ASP.NET (2.0 - 4.5.1) SQL Server (2000-2014) DevExpress Excel C# ASP JavaScript Object Oriented Programming .NET Compact Framework SQLLite MySQL Oracle Sybase HTML DHTML XML MS Visual Studio 6 MS Visual Studio .NET 2002/2003/2005/2008/2010/2012/2013 MS TFS MS IIS MS Project MS Visio MS SQL Server SQL Azure Windows Azure Adobe Photoshop. Freelance -Application Development -Database Administration

    $38.89 /hr
    50 hours
    0.00
  4. Geancarlos Sosa Ortiz

    Geancarlos Sosa Ortiz

    IT Engineer

    Dominican Republic - Tests: 4

    I have an extensive experience in Systems and Network solutions, design and implementation, over the last 4 years i've had the opportunity to work and lead many projects that helped me develop an strong IT field knowledge and customer interaction skills. Clear communication, fast working and job quality are my top priorities to get the work done. My specialties are network core redundancy and routing protocols design, with a extended knowledge on layer 2/3 troubleshooting, I am proficient in the following technologies and techniques: Networking: TCP/IP, IPv6, OSPF, BGP, EIGRP, HSRP, VRRP, GLBP, IPSec, NAT, Path Control, IP SLA, MPLS, Load Balancing, STP, VLAN trunking, Layer 2/3 Security, remote access. System Administration: VMware, Hyper-V, Windows Server, Active Directory, Exchange Server, IIS, Forefront TMG, Elastix.

    $12.00 /hr
    0 hours
    0.00
  5. Yavor Yanakiev

    Yavor Yanakiev

    System Network Engineer

    Bulgaria - Tests: 2 - Portfolio: 1

    An IT Professional with CCIE(Lab Attempted),CCNA,CCDA, CCNP,JNCIA, JNCIS-Security and more than 10 years of experience in Network designing, planning, and implementation. Possess extensive experience with hands on products like Routers, Switches, Firewalls(UTM Devices), Servers, Link Balancers, PABXs(Telephony Systems). I was involved in a complete setup of Data Center in my career - design, implementation and support. SYSADMIN: Debian Linux / Ubuntu Linux / Red Hat ES Linux / CentOS Linux / FreeBSD Unix /pfSense Unix / Cisco Routers & Switches FTP SERVICES: proftpd, vsftpd, pure-ftpd, sftpd, tftpd FILE SHARING SERVICES: Samba, NFS PRINTING SERVICES: Cups CACHE SERVICES: Varnish, Memcache, MemcacheDB, eAccelerator WEB SERVICES: Apache v1/2, Nginx, PHP v4/5, Suhosin MAIL SERVICES: Postfix, dovecot, courier, RBL, postgrey, spamassassin, amavis, razor, pyzor, clamav, dcc DB SERVICES: mysql v4/5, phpmyadmin, mysqlcluster, postgresql v7/8, phppgadmin DNS SERVICES: bind9, tinyDNS, powerDNS PROXY SERVICES: Squid, SquidGuard, DansGuardian, URLFilter, haproxy, pond FIREWALL SERVICES: iptables, ipfwadm, netfilter VERSIONING SERVICES: SVN, CVS, GIT IDS SERVICES: Snort, PortSentry, Fail2ban, Bastille, Chkrootkit, Rkhunter, Tiger, Tripwire, Aide MONIT SERVICES: Nagios, Cacti, Zabbix, Mon, Monit, Zenoss, Ntop, Munin KERNEL SERVICES: kernel v2.4/2.6, grsecurity, openwall, other patches STATISTIC SERVICES: Awstats, MRTG, Vnstat, Htop, Bwm-ng NETWORK PROTOCOLS: TCP/IPv4 IPv6, IPX, ROUTING: Static Routing, Rip v1/2, (E)IGRP, OSPF(V3) SWITCHING: VLAN, VTP, STP, Inter VLAN Routing WAN: PPP, FR, Network Security, ACLs, IP Addressing, NAT NETWORK MANAGEMENT -Planning, designing, configuring and managing LAN/WAN ensuring maximum network uptime. - Carrying out installation & configuration of network, troubleshooting network problems. - Monitoring and analysing the network including Netflow products(Manage Engine Netflow), Solar Wind Orion, Wire Shark, Sniffer Pro, MRTG ,Cacti, Ethereal, Deep9s Edge Security Profiler, Nmap, Kiwi Syslog Server Possess sound knowledge of: - Cisco IOS up to and including version 12.4 – Advanced Enterprise Services. - Catalyst Switches IOS up to and including version 12.4 - Advanced IP Services. - Catalyst Switches including 1900, 2950, 2960, 3550, 3560, 3750, 4506 and 6509. - Cisco Routers – ISR800,1700, 3600, ISR 2801,ISR2821, 7609, ASR1002 - Routing protocols RIP, OSPF, IGRP, EIGRP, IS-IS, BGP, static & default routing. - IP Multicast technology – PIM implementation, IGMP -VLSM, PPP, IP Addressing, Redistribution, Network Address Translation, TCP/IP, DNS, DHCP, Network Aggregation - Switching technologies like VLAN, Inter-VLAN Routing, Ether Channel, VTP, MLS, HSRP, VRRP, UDLD, STP 802.1d and 802.1w - Remote Access Solution like ISDN, Frame- Relay, PPP and HDLC. - Network designing and trouble-shooting. Network Cabling and Infrastructure. - Elfiq link balancer basic experience http://www.elfiq.com/ - Basic experience with MPLS VPN configuration and implementation with PE-CE routing protocol configuration Network Security - Implementing & configuring VPN ( Open VPN, Site to Site VPN,PPTP, Mobile IPsec VPN) - Cisco Firewall - PIX 506e, ASA 5505, 5510,5520 – experience in maintenance and configuration - Cisco IPS/IDS Firewall - ASA 5505 with AIP SSC-5 - Linux IPS/IDS Firewall - Deep9s - basic experience in maintenance and configuration - Linux Firewall - Pfsense - FreeBSD based firewall in VMware environment - Handling security of Cisco IOS - Zone-based Firewall - Managing Access Control (ACL), Traffic Filtering - Implementing and monitoring information security policies. - Handling network and information security audits. VOICE SERVICES - Cisco ISR 2821 with CUE – configuration of Auto attendant system, Dialling plans, Voice Mail, Fax services, E1, Pots, configuration of IP telephony, Accounting and Billing, Conference Service; - Cisco Unified Communications 520,540 – Dialling plans, Fax services, E1, Pots, IP telephony, Voice Mail; - Intercom – Helios IP; Operating System Knowledge - System administrator experience with various operating systems - Windows 3.11/95/98/2000/2003/XP,Vista,Win7, DOS, FreeBSD(basic), Debian(basic), Windows server editions(Windows 2003,Windows 2008 R2,Windows SBS2011;) Special Services - SMS gateway Ozeki NG http://www.ozekisms.com/ - Nextiva and Loronix video server and client software; Verint Networking appliances – encoders and decoders http://verint.com/ - Axis video software and encoders http://www.axis.com/ Virtualization - VMware ESXi 4.1, ESXi5 - Microsoft virtualization – Hyper V server - Blade Centre H, HS22

    $15.11 /hr
    0 hours
    0.00
  6. Yuriy Samorodov

    Yuriy Samorodov

    Microsoft Systems Administrator

    Russia - Tests: 2

    During the last 5 years I have been working on pop/imap to Exchange; Exchange to Office 365 ; Office 365 to Exchange 2010/2013 ; Exchange 2003/2007/2010 to Exchange 2010/2013 migrations. Very well experienced in PowerShell scripting Microsoft Server 2008, Active Directory, PowerShell, Basic Bash, SSH, Exchange Server, SharePoint, Blackberry, ActiveSync, Administration, Support, MCP Exchange Server, MCITP Messaging, MSCE Messaging MCP Transcript: 1021953/SamorodovYS

    $22.22 /hr
    0 hours
    0.00
  7. Manuel Ramirez

    Manuel Ramirez

    Software and ETL Developer

    Mexico - Portfolio: 4

    Experience in ETL jobs using Talend Open Studio, data is load into a data warehouse for reporting purposes. Example data sources are: Excel files, SQL server, MySQL, Access files, etc. Design and deployment of Jasper Reports into a Jasper Server instance. Coding experience in Java, PHP, Javascript, VB.Net, open to learn new languages. Automated file managment, FTP download, move, organize, etc.

    $12.00 /hr
    0 hours
    0.00
  8. Anton Piskunov

    Anton Piskunov

    Team Lead, Web Developer

    Russia - Tests: 1

    Hello, my name is Anton I have more than 6 years experience in web development and project management. I've developed more than 300 websites and other web-related projects. I have a lot of experience in following areas: - Programming Languages: HTML, CSS, JavaScript, PHP, Golang, Java - Backend Frameworks: Symfony, Laravel, Yii, Kohana, CodeIgniter - Frontend Frameworks: jquery, backbone, angular, ember, lodash, underscore, twitter flight - Pre-processors: LESS, SASS (SCSS), Jade - Databases and Storages: mysql, postgresql, mariadb, percona, redis, mongodb, riak, tarantool, zookeeper, memcache (-d), elasticsearch, logstash - Mobile Development: iOS, Android, Windows Phone - System Administration: Debian and debian-based OS, LAMP/LEMP stack's - VCS: Git, SVN - Team Leading

    $16.67 /hr
    0 hours
    0.00
  9. Vladimir E.

    Vladimir E.

    Lotus Notes/Domino Web developer

    Russia

    I have experience designing solutions based Lotus Notes/Domino platform, geographically distributed systems, RDBMS store data systems (DB2). My core competency lies in Web based development (XPages, DHTML), but I have a rich-client development experience also. Also I good in: Lotus Notes/Domino system administration, deployment, SQL-query optimization, project management. I use languages and technologies: Lotus Script, @formula, Java, Java Script, SQL, XPages, Ajax. I can work about 20 hours in a week.

    $17.00 /hr
    0 hours
    0.00
  10. Xavier Canal

    Xavier Canal

    Ruby on Rails Developer

    Spain - Tests: 3 - Portfolio: 4

    Ruby on Rails back-end developer since 2011 based on BCN. Really like care details and also talk about design and usability. I've been working on itnig, a business accelerator helping startup's to succeed in lean way. Since February 2014, working in Playfulbet as a pure backender. In my daily tasks I deal with redis, elastic-search, sidekiq, memcache, mysql, capistrano, jenkins, semaphore, TDD, and so on. And also working with Git, Vim. I've studied 5years of bachelor (spanish system) and working on production webs since 2010.

    $25.00 /hr
    0 hours
    0.00