Network & System Administrators

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  1. Timur Birsh

    Timur Birsh

    Unix Systems Expert and Oracle DBA

    Kazakhstan - Last active: 20 days ago - Tests: 7

    Hello, Over the last 15 years, I am working with the following Unix systems: BSD based systems, Solaris and Linux distributions including Debian, RedHat Enterprise Linux, CentOS, Oracle Linux and Ubuntu. Over the past years I have developed a wide range of solutions: VPN, proxy, mail, web, file, Samba, DNS, DHCP, SSO, database, monitoring, backup, virtualization and high availability servers. I am Oracle DBA with the 5 years of experience. I work for financial institution. On my control a 21 databases. Mission critical and big databases runs on the IBM hardware and AIX operating system. Other databases runs under control of Solaris (SPARC) and Linux operating systems. For data protection we use Data Guard. One of the best products of the Oracle is Enterprise Manager Cloud Control. We use it for the databases and hosts monitoring. Its management repository contains a lot of information. It is very useful in building of custom applications (reports, etc). I have work experience with the following Oracle RDBMS versions: 8i/9i/10g/11g. I am big fan of a tasks automation. For small jobs I use shell scripts. For jobs that have complex logic I use Python or Perl. For complex text processing I use awk, sed and shell scripts as a glue. I have 5+ experience of C language programming for Unix. Hardware administration of the following vendors: Oracle (Sun), HP, Dell. I am contributor of the following free software projects: Debian (http://qa.debian.org/developer.php?login=taem@linukz.org), Transmission Bittorrent Client, inadyn Dyndns client. I maintain the following opensource programs: * sXid - http://linukz.org/sxid.shtml * cd-discid - http://linukz.org/cd-discid.shtml I use Git for source code management. I would be happy to help you. Please do not hesitate to contact me.

    $33.33 /hr
    18 hours
    4.97
  2. Geza Akocsi

    Geza Akocsi

    Windows system and network administration, web development

    Hungary - Last active: 7 days ago - Tests: 4 - Portfolio: 1

    In the last 3 years I'm working as consultant, developer and system administrator in introduction of document management projects based on ELO system. (<a href="<a href="http://www.odesk.com/leaving_odesk.php?ref=http%3A%2F%2Fwww.elo.com"";;;; target="_blank">http://www.odesk.com/leaving_odesk.php?ref=http%3A%2F%2Fwww.elo.com"</a>;;;;; title="You are about to go to a URL outside odesk.com"><a href="http://www.odesk.com/leaving_odesk.php?ref=http%3A%2F%2Fwww.elo.com";;;; title="You are about to go to a URL outside odesk.com">http://www.elo.com</a></a>)I have 15 years of experience in system management in small business area. (Windows based servers and workstations, network planning and management.)In last five years I have designed and developed some websites from scratch, including areas of e-commerce and web-based business management.I have a lot of practice in remote management and it is my new tendency in my support field.

    $11.11 /hr
    17 hours
    4.81
  3. Daniel Yavorovich

    Daniel Yavorovich

    System Administrator

    Ukraine - Last active: 1 month ago - Portfolio: 1

    Operating Systems ● FreeBSD ● Linux Security ● iptables ● openssl ● jail ● clamav ● mod_security ● mod_clamav DNS ● Bind ● PowerDNS (+PostgreSQL / +MySQL) HTTP ● Apache ○ MPM: prefork, worker ○ mod_ssl, mod_php, mod_wsgi ● Nginx ○ Access control ○ Autoindex ○ Fast-CGI ○ uWSGI ○ Proxy ○ Cache ○ SSL ○ upload_progress_module ○ Control panel integration ■ Virtualmin ■ DirectAdmin ■ Plesk Proxy ● squid ○ basic auth ○ transparent proxy ○ cache ● 3proxy ○ http/socks ○ auth Raid ● Linux ○ md(0,1,5,6,10) ● FreeBSD ○ Gmirror / Striping File Systems: ● Ext 2,3,4 ● ReiserFS ● XFS ● OCFS2 ● ZFS (port to FreeBSD) ● CEPH CVS ● SVN ● Mercurial ● GIT ○ GitLab ○ GitoLite Backup ● rsync ● BackupPC ● Bacula FTP ● ProFTPd ● VSFTPD File sharing ● NFS ● SAMBA Control Panel ● Direct Admin ● Webmin+Virtualmin ● CPanel ● ISP-config ● Plesk Automatization ● Puppet ● Saltstack Monitoring ● Zabbix ● Nagios ● Munin ● Monit Network Understanding of theoretical and practical foundations of the networks (Data link, Network, Transport, Application Layers). VPN ● OpenVPN ● PPTP Database (SQL) ● MySQL (+MariaDB, +Percona) ● PostgreSQL Database (NoSQL) ● ElasticSearch ● Riak ● MongoDB ● Cassandra ● Redis Virtualization & Containerization ● KVM ● XEN ● OpenVZ ● LXC ● Docker ● Vagrant Cluster ● DRBD ○ master-slave ○ master-master (+ocfs2) ● Heartbeat ● Pacemaker Development ● actively use: ○ shell (bash, sh) ○ Python ● Frameworks ○ Django ○ Flask ○ Twisted ○ Tornado Cloud Solutions: ● AWS (EC2, S3, CloudFront, Route53) ● DigitalOcean ● RackSpace

    $33.33 /hr
    40 hours
    5.00
  4. 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
  5. Sergey Zabolotnikov

    Sergey Zabolotnikov

    Network Administrator

    Russia - Last active: 3 days ago - Tests: 5 - Portfolio: 2

    Hello! My name is Sergey Zabolotnikov. I believe my strong points are my Productivity and Punctuality. My #1 goal will always be to meet your needs and deadline. I'm honest and fair. Since 2004, I'm IT infrastructure administrator at company about 100 employees. Also from 2012 I set up and deploy web-hosting and cloud services. I have a Bachelors in Automation and Software Engineering from South Ural State University in Russia. Listed below are my experience and skills. - Network technologies: TCP/IP stack, VLAN, QoS, LLDP, STP. Network traffic routing, shaping, firewalling based on Linux and FreeBSD. - OS: Linux, Windows, FreeBSD; - LAMP stack, Parallels PLESK Panel, cPanel/WHM, PostgreSQL; - Web-hosting security problems analysis; - Zabbix monitoring system; - Zimbra, Qmail, Exim, Postfix; - Mass email sending systems, email deliverability problems. - Active Directory, Group policy, RDP services, Microsoft SQL server; - DNS, DHCP, PXE, RIS; - Shell scripting and automation on Windows and Linux platforms; - Manual and how-to's creation. Work fast, precisely and attentively. Document all changes to production system. I can create detailed manual for customers to reproduce my work for project by himself.

    $10.00 /hr
    46 hours
    5.00
  6. Sudan D.

    Sudan D.

    Network Engineer : Cisco : Juniper : Fortinet :

    Nepal - Last active: 7 hours ago - Tests: 6 - Portfolio: 4

    Despite the fact I am in young age I have years of experience with computers, networking and system. I am very tenacious and autodiact technical person for Cisco and Juniper Enterprise Network. I love to dig deep into specific technical challenges. 6+ years experience in Enterprise Netwrok. # Hands On Experience # Cisco: ASR 9K, ASR 1K, Nexus 7K, Nexus 5K, 4507R+E, 3900 Series, 2900 Series, 3850 Switches, 3650 Switches, 2960X Switches, ASA 5525X, ASA 5515X, ASA 5512X Juniper: MX40, MX5, SRX 550, SRX 240, SRX 220, SRX 210, SRX 100, EX 4300, EX 4200, EX 3300, EX 2200, MAG 4610, etc. More from Other Vendors # Some Highlights # @ Defining architecture and design for Enterprise customers. @ Lead engineer on some of the big enterprise networking projects. @ Training Internal Employee and customer. Main focus on Cisco and Juniper internetworks at Campus and Enterprise customers http://np.linkedin.com/in/sudandhakal

    $30.00 /hr
    133 hours
    5.00
  7. Jagjeet Singh

    Jagjeet Singh

    Labtech, Kaseya, ConnectWise Consultant

    India - Last active: 6 days ago - Tests: 1

    Technically knowledgeable and service oriented IT professional experienced in providing solutions to customer and end-users with proven technical expertise is seeking for a rewarding, challenging and personal growth where I can best use my knowledge and experiences in implementing, managing and supporting the IT infrastructure and end-users. Specializing in designing, implementing and maintaining Enterprise IT platforms, TRT takes the stress, risk and complexity out of managing core IT systems. Maintain complete control over the environment we take accountability for keeping it running efficiently and securely.

    $22.22 /hr
    1,843 hours
    5.00
  8. 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
  9. Monis Rizvi

    Monis Rizvi

    Experienced Remote Technical and Live Chat Support, Ticket Support.

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

    With more than 2 years of experience in customer service and technical support via live chat and tickets, I'm confident in my ability to find an amiable solution to any challenge I may encounter. As a self-motivated and determined person, with a strong capacity for learning, I thrive in virtual work environments - taking on new challenging and multi-tasking with ease. I've worked hard to foster strong working relationships and if I don't immediately have an answer to a question, I definitely have the skills and resources to know where to find it. As a naturally empathetic person with a solutions oriented attitude, I am able to relate to customers; helping them to feel comfortable and understood, while finding the appropriate solution for all parties involved. I am known for my commitment, superior work ethics, attention to detail and excellence in customer care.

    Groups: Microsoft Certified Professionals

    $6.67 /hr
    2,600 hours
    4.95
  10. 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