Cluster Computing Developers & Programmers

Showing 106 freelancers

Cluster Computing Developers & Programmers

Showing 106 freelancers

  • Technical Solution Architect in Linux and Opensource Tech

    Senior (Level IV) Linux System admin with over 8 years of experience in installing, maintaining & troubleshooting of 100’s of Unix/Linux systems, Mailing Solutions, Virtualization, Clustering, security software etc. I am a recognized expert in open source technologies and … more

    Senior (Level IV) Linux System admin with over 8 years of experience in installing, maintaining & troubleshooting of 100’s of Unix/Linux systems, Mailing Solutions, Virtualization, Clustering, security software etc. I am a recognized expert in open source technologies and contributor to the open source mailing system and Heartbeat clusters. I have been with CSC for 3 years. I am responsible for service and project delivery, and have been leading medium/large Infrastructure projects at CSC. As a solutions architect I have good all-round ability to juggle multiple projects and meet deadlines whilst at the same time comprehending complex and interdependent business processes. My technical expertise includes Solaris, Linux, Mail and Messaging technologies, Cluster Services, Virtualization technologies, NOC management, consulting, customer support, and internal help desk support. I have also demonstrated proficiency in optimization of legacy projects, Xen virtualization, software development, mass Red Hat-based deployments, HA Linux cluster design, Qmail clusters and NOC management in 24-hour support environments. I work in a challenging atmosphere for the interest of the company and have ability to identify and then deal with a client’s needs by translating them into appropriate technical solutions. Supports and delivered IT services based on ITIL processes, such as Configuration Management, Change Management, Problem management and Incident Management Specialties: I have extensive and in depth experience on Bind, Qmail, Sendmail, OpenVZ, Xen, LVS, openldap, heartbeat, RHCS and many more.  less

    ldap virtualization nagios linux-system-administration sendmail qmail clustering 00 more less
    • $11.11 HOURLY RATE
    • 5.0
    • 0 HOURS
    • INDIA
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 4 TESTS
  • Server and Network Administration Specialist

    I have been working in Linux and Cisco platforms since 2009. Achieved my RHCE and CCNA certifications. I am currently working towards CCNP. Currently, I'm working in the Data Network of an International Internet Gateway. I have also worked … more

    I have been working in Linux and Cisco platforms since 2009. Achieved my RHCE and CCNA certifications. I am currently working towards CCNP. Currently, I'm working in the Data Network of an International Internet Gateway. I have also worked as a System Admin in a University and managed Servers that provided services for more than 500 hosts. I have worked in one of the largest ISPs in Bangladesh. I have deployed Linux Servers for many organizations and troubleshooted many Server related issues during my work in the ISP.  less

    linux-system-administration cisco-ios nagios iptables clustering samba ospf cisco-routers asterisk postfix 00 more less
    • $16.67 HOURLY RATE
    • 5.0
    • 18 HOURS
    • BANGLADESH
    • LAST ACTIVE
    • 20 PORTFOLIO ITEMS
    • 5 TESTS
  • Cloud Virtualization Engineer

    Chief Engineer, Global Engineering, Virtual Private Cloud VMware ESX/ESXi vSphere4/5, SRM, VUM View3/4/.x, Composer, Connection Server P2V, P2C Cloud Computing/IaaS/PaaS/SaaS Windows NT/2000/2003/2008, MAC, OS2, Novell Blade Server/Enclosure Engineering Project … more

    Chief Engineer, Global Engineering, Virtual Private Cloud VMware ESX/ESXi vSphere4/5, SRM, VUM View3/4/.x, Composer, Connection Server P2V, P2C Cloud Computing/IaaS/PaaS/SaaS Windows NT/2000/2003/2008, MAC, OS2, Novell Blade Server/Enclosure Engineering Project Specialist Active Directory Group Policy DNS/WINS/DHCP Windows Clustering Sharepoint HA/DR Scripting NAS, SAN Storage Exchange Antivirus Expert Security Expert Server/Client Imaging (RDP/Altiris/Ghost) Backups (Arcserve, Tivoli, DP) Design and Implementation C, Cobal, Fortran, Assembler, RPG, VB,Oracle, SQL.  less

    vmware-administration clustering 00 more less
    • $22.21 HOURLY RATE
    • 4.6
    • 0 HOURS
    • IRELAND
    • LAST ACTIVE
    • 5 PORTFOLIO ITEMS
    • 4 TESTS
  • linux system engineer

    12 years of professional experience in Linux, Debian, RedHat, SuSE, etc.. Apache, Tomcat, Java, Oracle, samba, php, mysql, clustering technologies (LVS, drbd, hb, KeepAlive, VMware cluster, etc.), virtualization (VMware, Xen, KVM), MySQL Tuning and Replicaton/Clustering setup, Server hardening, Performance … more

    12 years of professional experience in Linux, Debian, RedHat, SuSE, etc.. Apache, Tomcat, Java, Oracle, samba, php, mysql, clustering technologies (LVS, drbd, hb, KeepAlive, VMware cluster, etc.), virtualization (VMware, Xen, KVM), MySQL Tuning and Replicaton/Clustering setup, Server hardening, Performance Monitoring and Tuning, Server Monitoring (Nagios, munin) , WebSite Configurations and Migrations, Postfix with spam filter, virus scanner  less

    linux-system-administration clustering 00 more less
    • $20.00 HOURLY RATE
    • 5.0
    • 3 HOURS
    • HUNGARY
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 6 TESTS
  • can't do is not an option

    - Linux maintenance/troubleshooting (RHEL, Centos, Debian), - Cloud hosting (Amazon EC2, AWS, S3), - Networking (dhcp, DNS:powerdns/bind/named, vpn: openvpn/pptp, firewalls: iptables/ipfw, qos, proxies), - Web servers (apache, nginx, lighttpd), - Mail servers (exim, postfix, qmail, antispam/ antivirus: clamav/spamassassin … more

    - Linux maintenance/troubleshooting (RHEL, Centos, Debian), - Cloud hosting (Amazon EC2, AWS, S3), - Networking (dhcp, DNS:powerdns/bind/named, vpn: openvpn/pptp, firewalls: iptables/ipfw, qos, proxies), - Web servers (apache, nginx, lighttpd), - Mail servers (exim, postfix, qmail, antispam/ antivirus: clamav/spamassassin/amavis, courier, dovecot), - Bulk marketing (Dkim, spf, high speed/inboxing, interspire, powermta,returnpath), - Automation (puppet, perl/shell/awk scripting), - Monitoring (nagios, zabbix,cacti), - Database Optimization,Replication (MySQL)  less

    mysql apache-administration lamp-administration postfix amazon-ec2 amazon-web-services squid nginx magento linux-system-administration performance-tuning load-balancing clustering haproxy centos 00 more less
    • $33.33 HOURLY RATE
    • 5.0
    • 97 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 1 TEST
  • System administrator

    16 years of experience in IT, supporting mostly Windows infrastructure (Win 2000, 2003 and 2008) from setup a server, design a complex solution to provide day to day support and solving incidents. For the last 5 years I have been … more

    16 years of experience in IT, supporting mostly Windows infrastructure (Win 2000, 2003 and 2008) from setup a server, design a complex solution to provide day to day support and solving incidents. For the last 5 years I have been working as a 2nd or 3rd level of support for: Windows servers Active directory DHCP DNS Citrix, Xenapp, Provisioning Xendesktop Xenserver VMware servers Veritas cluster Netbackup Disaster recovery solutions Also, I have 3 years of experience in project management, providing solutions and leading the project until is implemented and supported. Certifications ITIL Xenapp 6.5 MCSA Windows 2003 MCTS Active directory Windows 2008 MCTS Network infrastructure in Windows 2008  less

    windows-administration vmware-esx clustering project-management change-management itil data-backup iis technical-support information-architecture disaster-recovery citrix-xenserver 00 more less
    • $11.11 HOURLY RATE
    • 4.6
    • 23 HOURS
    • MEXICO
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 5 TESTS
  • Seasoned linux Administrator - Nginx , apache, cPanel, Shell scripting

    Hello, I am Vinod and I have more than 7 year experience in managing Linux and cPanel servers. I have versatile experience in setting up and managing servers, optimizing them for the best usage and fine tuning the security aspects … more

    Hello, I am Vinod and I have more than 7 year experience in managing Linux and cPanel servers. I have versatile experience in setting up and managing servers, optimizing them for the best usage and fine tuning the security aspects. I am very good in migrating websites or applications from one server to another with lowest possible downtime. Along with that I use shell scripting to automate day-to-day activities. I have set up and maintained clusters of DNS servers, web servers using Apache / Nginx controlled by a Load Balancer, Db servers using MySQL / Percona /MariaDB with Master - Slave replication. I have also experience in setting up NFS server for remote storage. I can be available any time on all weekdays and can provide industry references if needed. Why you wont regret for hiring me. 1. I love what I do and I insist on doing it well. 2. I follow certain work ethics and 100 % privacy and confidentiality is promised. 3. I do not outsource my projects. 4. I use Linux PC and Laptop and hence my computer is free from virus. 5. Have more than 3 active internet connections. DSL, WiMAX, 3G x 2 . So no ISP issue I am 1. True professional. An engineer by profession and education. 2. I am honest. I don't boast on what I don't know. I know Linux and I know it well. 3. I would rather ask 100 questions than making mistakes. 4. NDA is fine. Can send it as a hard copy / fax / email. 5. I have many other things to do too and I value my personal life too. So no lame excuses or delay projects. I am efficient in my work. I believe " a stitch in time saves nine " completely. 6. I understand that what you are spending is your hard earned money. 7. I will be online on Skype / Gtalk / Yahoo / AIM and I will be available on email / phone. With my 8.5 year experience, I believe I can understand what is the requirement completely. I have been a help desk (Kayako, Perlbill, WHMCS, Cereberus ) tech for the last 6 and half years and I have been dealing with a lot of people ranging from technically sound server / network administrators and architects to laymen. I can effectively communicate in a language which is understandable to whom I am dealing with. Pasting below a briefing about my skills. my experiences include --Centos, FreeBSD, Ubuntu , Redhat -- PCI -- Nagios -- Apache , Nginx , Lighttpd -- Exim -- MySQL , Percona , MariaDB -- Bind -- NFS -- Shell scripting, Working over command line. -- Control panels like cPanel, Plesk, Webmin, -- Cloud operating systems like Applogic, Onapp. -- Working on KVM switch ( for installing OS / networking issue trouble shooting etc ) -- Server security , Firewalls, Mod Security -- Documentation Skills And many other services / applications which are necessary for managing linux based servers and applications.  less

    unix-shell whm apache-administration nginx dns mysql mail-server-implementation cpanel email-technical-support pci-compliance load-balancing database-administration clustering virtualization virtuoso exim helpdesk-support email-deliverability-consulting 00 more less
    • $16.67 HOURLY RATE
    • 5.0
    • 671 HOURS
    • INDIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 7 TESTS
  • RHCE/IBM-AIX Cert/ VMware, SAN-NAS Storage Admin, Qmail, Apache .

    Summary: • 8 Years of experience in the Unix(Linux and IBM AIX), Storage, Virtualization( VMware ESx and AIX LPAR, DLPAR) Administration. • Currently started working as Freelance Engineer and available full time also. • Having experience of supporting Production Environment. I Was … more

    Summary: • 8 Years of experience in the Unix(Linux and IBM AIX), Storage, Virtualization( VMware ESx and AIX LPAR, DLPAR) Administration. • Currently started working as Freelance Engineer and available full time also. • Having experience of supporting Production Environment. I Was L3 support Unix Administrator and supported (3000 Server) at IBM Data Centre UK. • Having Experience of supporting Unix Clusters ( AIX HACMP Cluster) • Having Experience of supporting Storage Device Familiar with External Storage :- SAN, FASTt, DS4000, Analyzing Fast logs, coordinating with Storage team and providing HBA, FC details, WWPN details, and configuring LUNs in AIX host using SDD and AIX commands. Building Storage Device using Open Source software Like FreeNAS and Openfiler. • Familiar with VMware:- Installing and upgrading the ESX server (ESX 3, 3.2, 3.5. Installation of Virtual Infrastructure client and Virtual Center. Managing Virtual Machines using VI client, Managing ESX server using Virtual Center. Creating Virtual Machines, template, cloning. Moving VMs one ESX to another ESX host. Troubleshooting ESX server and Providing RCA for ESX server and coordinating with VMware support team over email/phone. ESX storage management. Familiar with ESX cluster. • Familiar with AIX Virtualization LPAR & DLPAR:- Creating LPAR Profile, assigning Memory, CPU etc… dynamically using Hardware Management Console • Familiar with AIX HACMP 5.3 Cluster: - Troubleshooting 3 node and 2 node cluster, cluster verification and synchronization, creating and increasing cluster file system, doing resource group failover using C-SPOC. If cluster service failed to make resource group online then manually making resource group online. • Familiar with AIX Virtualization LPAR & DLPAR:- Creating LPAR Profile, assigning Memory, CPU etc… dynamically using Hardware Management Console • Familiar with Advance Networking: Router Configuration, Firewall Configuration (IPcop). Designed and implementation Network for Web and Email Hosting Project. Current Project • Currently implementing Web and email hosting from the scratch. • Disaster Recovery Management :- Build Storage Device In Linux. • Built Qmail Server from Scratch • Built Web Server from the Scratch • Configured Call management using OS Ticketing System. • Developing onlinedigitallibrary web site. • Configuring OpenEMR for Hospital Management • Also I have well equipped LAB. Education: BCA, PGDCA, (MSc-IT) Professional Certification: RHCE and IBM AIX  less

    aix qmail mysql vmware-esx ibm-pseries firewalls linux-system-administration database-administration mail-server-implementation clustering network-administration ibm-storage 00 more less
    • $16.67 HOURLY RATE
    • 4.6
    • 0 HOURS
    • INDIA
    • LAST ACTIVE
    • 6 PORTFOLIO ITEMS
    • 5 TESTS
  • MCITP Virtualization Administrator/Exhange/ISA(TMG)/Lync/SystemCenter

    System Engineer in Microsoft Technologies from Russia. My Skills: Server OS: Windows Server 2003, 2008, 2008R2, 2012 Desktop OS: Windows XP, Vista, 7, 8 Roles: AD, DNS, GPO, DHCP, IIS, WDS, WSUS Products: Virtualisation: Hyper-V, VMWare, failover cluster, MSSQL Cluster … more

    System Engineer in Microsoft Technologies from Russia. My Skills: Server OS: Windows Server 2003, 2008, 2008R2, 2012 Desktop OS: Windows XP, Vista, 7, 8 Roles: AD, DNS, GPO, DHCP, IIS, WDS, WSUS Products: Virtualisation: Hyper-V, VMWare, failover cluster, MSSQL Cluster, VDI, FC, ISCSI, RD Farm, SCVMM 2008R2-2012 Exchange 2007, 2010, 2013 Lync front end server, Lync edge server, Lync mobility ISA 2004-2006, TMG 2010, TMG Enterprise Arrays Hardware: HP Storage Systems (MSA P2000, EVA P6000), HP Blade Systems HP Proliant Servers, HP Switches and SUN Switches.  less

    windows-administration windows-xp-administration network-administration virtualization microsoft-hyper-v microsoft-hyper-v-server clustering vmware-administration vmware-esx network-security isa-server microsoft-exchange-server data-backup microsoft-scvmm microsoft-sccm microsoft-lync-server microsoft-small-business-server-administration vpn iis dhcp dns microsoft-virtual-server ad-servers 00 more less
    • $20.00 HOURLY RATE
    • 5.0
    • 173 HOURS
    • RUSSIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 1 TEST
  • Sr Linux / Amazon EC2 / Migrations / Nginx / Security / DevOps

    A self-motivated System and Network security administrator with more than 10 years in the management and analysis of Linux/Unix enterprise Servers (60- 70 servers). With deep and advance knowledge of highly scalable servers, Cloud Computing, High performance, Hardening Servers … more

    A self-motivated System and Network security administrator with more than 10 years in the management and analysis of Linux/Unix enterprise Servers (60- 70 servers). With deep and advance knowledge of highly scalable servers, Cloud Computing, High performance, Hardening Servers, Migrations, Ethical hacking, Development Operations - DevOps, Open Source services and Server optimization. Certifications such as: Certified Ethical Hacker - Red Hat Certified Engineer - Cisco CCNA. Expertise in: MIGRATIONS: AMAZON/Wordpress/Magento/LAMP/Cpanel migration plans and implementation, backup-restore and recovery plans. I have helped dozens of clients migrate their web sites and applications into the CLOUD. Design and build Web Servers with HIGH PERFORMANCE (LAMP, NGINX/python, Nginx/Varnish, Nginx/php-fpm, Jboss, Apache tomcat and Varnish) - Improve and Fix performance issues, service optimization, security issues and deployments. MALWARE removal and analysis: WordPress / Magento / Joomla Malware removal and remediation, Incident handling and Forensics analysis. BOOST and optimize websites with: NGINX, Varnish, REDIS, Amazon S3, Memcached, APC, apache tunning and mysql tunning, Amazon CloudFront and more. Amazon Cloud Computing (AWS) - AMAZON EC2, amazon CDN S3, amazon RDS, amazon ELB, Amazon AutoScaling, VPC, CloudFront, Route53, etc. Also Management of multiple Control panels like Rackspace Cloud Computing, SoftLayer, GoDaddy, HostGator, dreamhost and MediaTemple. Designing and deploying scalable & Highly available systems such as: Amazon Load Balancing (ELB), Hearbeat, HAProxy, mysql cluster, apache cluster... Network and web security such as: Vulnerability Assessments, Hardening servers, security audits, Penetration testing, Virus/Malware/Threats/Vulnerabilities countermeasures, web security, fail2ban, Tripwire-AIDE-OSSEC, mod_security, mod_evasive, Denial of Services (DDOS) countermeasures, Firewalls (iptables, CSF and apf), etc. VPS: Cpanel / WHM / Plesk / DirectAdmin / Webadmin - Migrations, management, hardening, configuration, maintenance and high level of Administration. Databases Administration such as: Mysql tweaking and tunning, MongoDB, load balancing and Mysql replication (Master & Slave) for High traffic. Database: Mysql tweaking and tunning, MongoDB, ElasticSearch, Apache Solr, Sphinx, lucene, MariaDB, Postgresql replication & Pgpool, Mysql load balancing and Mysql replication (Master & Slave) for High traffic. Continuous integration (CI) and Automated configurations with: Puppet, Capistrano, GIT and Fabric. Jenkins + github, Jenkins + nginx... Networking: TCP/IP high expertise, NAT, FIREWALLS, CISCO routing and switching and Packet analysis with tcpdump and wireshark. Storage solutions and Directory management: SAMBA, NFS, FTP and sftp. LVM and RAID*. SCRIPTING: Bash and python. Proficient with MAIL Servers: postfix, sendmail and Zimbra. Source control versioning: GIT and SVN. Deploying and maintaining Monitoring systems such as: nagios, ZAbbix, cacti and Jboss Operation Network (JON). Backups solutions: amanda, rsync, Amazon backups and rsnapshot. Research & development (R & D) for any open source service and technology.  less

    network-security amazon-ec2 nginx linux-system-administration penetration-testing apache-administration jboss ubuntu virtualization samba security bash mysql amazon-rds amazon-web-services nagios rackspace-cloudservers clustering iptables centos git apache-tomcat unix-system-administration varnish-cache django-framework 00 more less
    • $24.99 HOURLY RATE
    • 4.9
    • 4676 HOURS
    • MEXICO
    • LAST ACTIVE
    • 6 PORTFOLIO ITEMS
    • 4 TESTS
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