Cluster Computing Developers & Programmers

Showing 76 freelancers

Cluster Computing Developers & Programmers

Showing 76 freelancers

  • 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
    • 16 HOURS
    • BANGLADESH
    • LAST ACTIVE
    • 20 PORTFOLIO ITEMS
    • 5 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
    • 661 HOURS
    • INDIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 7 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
    • 169 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
    • 4659 HOURS
    • MEXICO
    • LAST ACTIVE
    • 6 PORTFOLIO ITEMS
    • 4 TESTS
  • System and Network Administrator

    I have experience with Nginx (as web server, balancer, proxy and fastccgi proxy), Apache as web server and proxy, setting up php (as mod_php and fpm) and variety of php modules and runnig php , postgres, mysql and redis databases and … more

    I have experience with Nginx (as web server, balancer, proxy and fastccgi proxy), Apache as web server and proxy, setting up php (as mod_php and fpm) and variety of php modules and runnig php , postgres, mysql and redis databases and their backup solutions, replication and quick changes in databases, openvpn, cron jobs, ssl certificates, postfix, exim, securing ssh access, iptables, optimising db and web servers (varnish, memcached, caching content, setting expirations, apc, etc), setting permissions and users etc, tunning kernel parameters, setting puppet for centralized automated server deployment, using git, svn and mercurial repositories and to setup gerrit and make deployment automation, Jenkins, setting Symfony and Composer environments, Ruby (through rubyenv or system-wide). I also know to manage dns (clear bind9 or hosted dns solutions) and cdn services (liquidweb, cloudflare). About hosting solutions I have used since now AWS, storm-on-demand, server4you, hostgator, liquidweb. I am good with different cluster setups, separate db, app, balancer and other servers, securing connections between them etc. I also know to setup network file and printer sharing between different operating systems. I know to work with KVM, OpenVZ and VMWare virtualization. Provisioning, backup solutions, system setup, moving machines from one platform to other etc. About VPN I have experience with OpenVPN (with or without keys, LDAP auth, etc) and with Mikrotik PPTP VPN. Also I know to work with and to setup dynamic routing, dns, dhcp, access lists, static, routing, multi wan with failover, BGP, long distance wireless links, QoS, queues etc with mikrotik systems. I am head Network and System administrator at NSWireless community network located in Novi Sad, Serbia. I have experience with Debian, Ubuntu, Fedora, Red Hat, Centos, Arch, SUSE and other linux platforms. Complete setup and maintenance. I also have some experience with Mac OS X. About premade systems, I can set Worpress, Joomla, Magento, Redmine etc and tune their parameters and suggest environments for best performance. About panel solutions, I know to work with Plesk, WHM, CPanel, etc, but I prefer to use servers without these panels, so I use them only if it is your wish. I know to setup zabbix server for real time server and services monitoring, and munin for graphing. Thank you for reading, I hope that we will have good cooperation in administrating your servers.  less

    nginx apache-administration postgresql mysql database-administration clustering mono openvpn ssh data-backup virtualization dns puppet-administration load-balancing git linux-system-administration postfix unix-system-administration unix-shell bash centos ubuntu fedora opensuse amazon-ec2 amazon-s3 00 more less
    • $16.67 HOURLY RATE
    • 4.3
    • 145 HOURS
    • SERBIA
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 3 TESTS
  • US based Project Manager/Business Analyst/Statistical Analyst

    • Dedicated and result oriented Business Analyst / Data Analyst with Six years of experience in diverse domains such Finance, insurance, E-commerce, government with in depth knowledge in Statistical Analysis, Data mining, SPSS and Data Analysis. • Proficient in Creating and Transforming Business … more

    • Dedicated and result oriented Business Analyst / Data Analyst with Six years of experience in diverse domains such Finance, insurance, E-commerce, government with in depth knowledge in Statistical Analysis, Data mining, SPSS and Data Analysis. • Proficient in Creating and Transforming Business Requirements into software requirement specification (SRS) using MS Word. • Expert in creating Risk Management Plan, User requirement Specification (URS), Functional Requirement Specification (FRS), Business Requirement Documents (BRDs). • Extensive experience in Agile and Waterfall methodology. • Proficiency in analyzing and Creating Use cases, Use Case Diagrams, Activity diagrams, Business Flow Diagrams and Sequence diagrams using MS Visio. • Expertise in MS Office Suite, MS Visio, SPSS, Statistical Tools, Financial Tools, Dividend Discount model and HP Quality Center. • Organized many Joint Application developments (JAD) and Joint Requirement Planning sessions (JRP), Interviews, workshops and requirement Elicitation sessions with end-user/clients/stake holders and the development group. • Extensively interacted with the QA Team in creation of the Test Plans, Providing Test Data, Creating and Test Cases. • Experience in Black Box Testing and User Acceptance Testing (UAT). • Strong business acumen, strategic thinking, interpersonal and presentation skills, adept at creating, editing, and coordinating extensive communication networks with excellent communication, analytical skills and conflict resolution skills. • Comprehensive experience in designing of customized system development methodology. • Extensive experience in working with AIG data collection methodology that consist of complex data collection template, data storage and report generation. TECHNICAL SKILLS • System Development Life Cycle (SDLC), Microsoft Access, Excel, Word, Power Point, Visio, Macro, Vlook-up, Hlook-up, Pivot table, Waterfall Methodology, Microsoft Visio, SPSS, Filemaker Pro, Agile Methodology, Product backlog, Sprint Planning, Retrospective meeting, Scrum practice, JAVA, SQL , EMC Documentum, Pre-UAT testing, Functional Specification, HP Quality Center, Data mining,  less

    business-analysis statistics php website-development ibm-spss accounting microsoft-sccm microsoft-scvmm microsoft-visio clustering rapid-miner .net-framework java-servlets-development project-management sharepoint-designer automated-testing microsoft-sql-server-administration human-resource-management 00 more less
    • $27.78 HOURLY RATE
    • 4.5
    • 731 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 3 PORTFOLIO ITEMS
    • 1 TEST
    ASSOCIATED WITH:
  • AWS Architect/Engineer/Devops

    Over the last 9 years, I have been working as technical support engineer/team leader/infrastructure architect for several large companies (hosting companies with more than 1000 of dedicated and several dozens of VPS servers, ecommerce application companies, small and … more

    Over the last 9 years, I have been working as technical support engineer/team leader/infrastructure architect for several large companies (hosting companies with more than 1000 of dedicated and several dozens of VPS servers, ecommerce application companies, small and large companies with different cloud setups from several to several hundreds of instances) My competency lies in planning, development, deployment and setup of new production environments, troubleshooting/support/improvement of existing production systems based on Linux/Unix. Have a lot of experience in automation/monitoring/backup of different distributed environments with LAMP stack and other applications, different clustering, scalability and high-availability techniques.  less

    linux-system-administration amazon-ec2 clustering bash apache-tomcat ftp dns centos ubuntu subversion atlassian-jira mysql nagios lamp-administration memcached git rightscale amazon-web-services unix-shell redis squid haproxy mail-server-implementation postfix qmail apache-administration project-management github version-control plesk load-testing devops 00 more less
    • $33.33 HOURLY RATE
    • 5.0
    • 1139 HOURS
    • RUSSIA
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 11 TESTS
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