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Last updated: October 1, 2015

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Ionut Cadariu

Ionut Cadariu

Unix/Linux System Administrator


Perform routine maintenance (log monitoring, patches, upgrades, hardware monitoring, etc) * Ensure the functioning at peak performance, recommend and implement solutions to improve performance * Perform installation and troubleshooting of systems and/or applications, solving problems as to ensure application consist maintaining and patching the productive servers. Negotiating downtime and preparing the systems. * Maintenance and administration of post-installation configuration scripts

$10.00 /hr
0 hours

Rodney Caston

Rodney Caston Agency Contractor

Systems Engineer

United States - Tests: 3

I have over fifteen years experience in linux systems administration and development, having managed large environments composed of many thousands of systems. I believe I bring with me a valuable perspective on how to provide solutions for efficiently managing extremely large, and distributed environments without scaling headcount. Some of my accomplishments include having built site reliability/network operations centers from the ground up, from the development of the fault and performance management systems to the management of the staff. I have built up and administered large scale email infrastructures which would send and receive millions of emails daily. I have managed datacenter migration projects consisting of thousands of servers running live services. I have extensive experience in the online gaming industry, focusing on adminsitration, server engineering, and DevOps. I have even worked in a creative capacity as a writer and creative designer in the past, having co-created the MegaTokyo™ intellectual properties. Given the variety of roles I've had in my career, I consider myself a jack-of-all-trades. What I enjoy most is being able to provide value to the organizations that I am able to support, regardless of what role that places me in at the time. Specialties: Amazon Web Services, Apache, Backtrack 5, Bind/DNS, Cacti, Chef, Cloud, Drupal, Elasticsearch, Ganglia, Glusterfs, HAProxy, Heartbeat, Kibana, LDirectord, Linux (Ubuntu, Debian, Redhat, CentOS, Kali), Logstash, Memcache, Metasploit, Monit, MongoDB, MRTG, Munin, MySQL Server, Nagios, Netcool, Nginx, Offensive Security, OpenVAS, OpenVPN, OSSEC, OSX, Penetration Testing, Postfix, PowerDNS, Puppet, Ruby, RRDTool, SAN, Samba, Sendmail, Shell Scripting, Splunk, Squid, Syslog, SMTP, SNMP, SSL, Squid, TCP/IP, VMWare, Windows, and Xen.

Associated with: Caston Consulting LLC

$91.11 /hr
1,634 hours

Salman Umar

Salman Umar

Senior Consultant UNIX/Linux/Oracle/Storage Infrastructure


Sun Solaris/HP-UX/Linux/AIX Administration and implementation for Telcom and Large FSI in Pakistan HP/MS/Oracle/Sun/Juniper/Emerson/FalconStor/SAP R2, 10 years’ experience Storage designing, Administration and implementation HP/HDS/EMC. 8 Years’ Experience. Tier 3 & 4 Data Center Operations. 4 Years’ Experience Emerson Network Power Commissioning and Project Management 3 Years MS Windows Servers Administration all version. 15 Years’ Experience HP/SUN/IBM/Oracle enterprise hardware support and services on 24x7 basis 15 Years’ Experience Operating System Oracle Enterprise Linux, RHEL, Solaris, HP-UX , AIX. 9 Years’ Experience Databases Oracle 9i,10g,11g, RAC 11g , Dataguard, Grid Control. 5 Years’ Experience Hardware Platform Oracle Exadata, Oracle ODA, HP Enterprise Hardware, IBM Hardware 2 Years’ Experience. VMware/MS Hyper-V Virtualization Blade systems Matirx Experience 8 Years’ Experience Clustering Software RAC, MC Service Guard. 8 Years’ Experience Cloud and Converge Infrastructure VDI Xendesktop, Citrix Backup Software Data Protector 6.0, Symantec , EMC 8 Years’ Experience Backup Libraries EML, MSL, Autoloader.10 Years’ Experience Storages HP StorageWorks, Enterprise Virtual Array, HP 3PAR, MSA, HDS, EMC VNX. 7-8 Years’ Experience Languages Shell Scripting. 10 Years’ Experience Support and Service 24x7 17 Years Storage Migration 5 Years Fluent in English, Punjabi, Urdu, and Sindhi Education: B.Sc. Final Semester of MCS Computer Science. Certified HP ASE StorageWorks, HPASE Networking, HP technical Architect ArcSight, HP CSE HA/Virtualization/Network Security, Oracle EXADATA, Oracle RAC, Oracle Linux, Sun SPARC T4, MCSE, MCSA, MCTS, SCO CUSA, Juniper JNCIA, JNCIS. Solaris 10 Administration, Trainings: EVA Singapore, Falcon Store CDP Malaysia, Oracle Exadata USA, Juniper Netscreen Firewalls UAE (Dubai) Courses: CISA, PMP, CRM, HP Pre-Sales Academy 2014, ITIL v3, Oracle DBA/Exadata from Oracle University. Project: 40 projects commissioning included MS/HP/SUN/Oracle/Juniper infrastructure from initiation to completion as per PMP/ITIL best practices for IT services industry.

$22.22 /hr
0 hours

Pavel Mlejnek

Pavel Mlejnek

System support analyst 4 years experience.

Czech Republic - Tests: 2

Hello, I can offer you high quality Customer/Technical service, server and network administration. At the age of 18 I started to work as a desk clerk in Hotel where acquired my communication skills as I was dealing with customers every day whether on the phone, Skype or in person. Two years later I began my IT career as a system administrator in small company, administrating local network consisting few machines with Windows XP, Windows 7 , Debian operating systems, and Windows Server 2003. Two years later I moved to Athens, Greece in order to work for Microsoft as a 2nd line Technical/Customer support, resolving issues with applications, performing software upgrades, analyzing crash dumps, migrating user accounts etc... Most of the time I spent on phone/chat with customer while remotely managing customers machine. Apart from that I was official MS Social Media and forum moderator and quality controller of the rest of Czech Technical support department staff. Currently I am working as Windows, Linux and HPUX Server Administrator in enviroment hosting more than 5000 servers. My main tasks are maintenance of servers (including configuration of new servers), run OATs, perform backups and restores and resolving services and application issues. Apart from that I am also responsible for patching and server security.

$15.00 /hr
0 hours

Vishal K.

Vishal K.

Linux Admin

India - Tests: 4

Linux Admin with more then five years of experiences. I worked with hosting company, corporate Training company and some live migrations. 1. Client :- Venus Garments (INDIA) Ltd. Migration from Windows Active Directory to Open Ldap Migration of 150 Windows Clients to Linux Migration of NComputing Devices from Windows to Linux 150 Clients Data Migration From Windows to Linux Configure open stack server Configure virtualizations server (KVM. VMWARE) 2. NIC (National Informatics Centre) PUNE Red Hat Enterprise Virtualization (RHEV 2.2 to RHEV 3.0) Migration Done In NIC (National Informatics Centre) Done Clustering Active/Passive over 2nodes Done Installation,Deployment and Troubleshooting of Hypervisors Live Migration Testing Network Bonding Done for Network Fail-over Device Multipating with SAN Storage Red Hat Clustering Done with HA LVM on RHEV manager Data Center Create for Testing , Production and Database

$5.00 /hr
0 hours

Valeriy Vilhovoy

Valeriy Vilhovoy

Network / Cisco / Linux Administrator / Cloud Expert / AWS / DevOps

Poland - Tests: 2 - Portfolio: 4

PROVIDES 24/7 SUPPORT IN REMOTE SERVER ADMINISTRATION, Having 7 Years of Experience in AWS / Linux / Server Administration with experience in ( EC2, S3, ELB, High Availability Architecture , EBS, Beanstalk, Security Groups, Route53, Cloud Front, (CDN) , RDS VPC, Cloud watch, Autoscalling etc Having 7 years of Experienced in Linux ( Red hat , Fedora, Cent OS , Ubuntu ), , Windows Server 2008 , Lampp Server Administration , Apache , IIS , Microsoft SQL Server (2005,2008) Administration , MySQL Server , DNS Server , SSL , Zimbra Collaboration Suite , Scalix , Axigen ,Open fire , Iptables , Linux Based Firewall , Subversion , Endian Firewall , VMWARE Work Station , VMWARE ESXI , Citrix Xen Server , Microsoft Hyper -V , PBX (Asterisk ,Sip exec) , Apache , LAMP , virtualization etc.. Networking skills: OSPF; RIP, STP, BGP, RSTP, TCP/IP, IPv6, NAT, MSTP, PAT, VLAN, Private vlan, ACL. VPN Servers: OpenVPN, PPP, PPTP, PPOE, Site-to-Site VPN IPSEC, L2TP. Network equipment: Cissco ASA, BDCOM OLT P3310-AC, Cisco 2950, 3550, 3650, 2911, Juniper, Allied Telesis, D-Link, TP-link, Ubiquiti Networks, Extreme, Motorola AP-6521, Monitoring and control: of wireless subscribers 500 Air Control 2 Billing Systems: Installation and configuration of servers ABillS billing.

$20.00 /hr
111 hours