I have 7 years of experience in Linux System Administration, I handle servers based on various distributions and platforms which are as follows; OS : Red Hat Linux, CentOS, Debian, FreeBSD, Ubuntu, Fedora. Platforms : cPanel/WHM, Plesk, Direct Admin, Webmin, Virtualmin, ISPconfig, zPanel. Others : Openvz, Virtuozzo, LAMP, XEN, Solusvm, Veportal, AWS I have extensive experience in end user support via various mediums such as Live Chat, Emails, Tickets.
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Expert in Linux, proficient in BSD, Windows, OS X Red Hat Certified Engineer (RHCE) System and software configuration, installation, optimization System and network administration and security Performance, metrics and monitoring Programming in perl, php, c, shell Packaging rpm and deb, Linux kernel customization Linux Live CD & Live USB creation Linux distributions customization And 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 VPC. 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, Amazon VPC, CloudFront, Route53, etc. Also Management of multiple Control panels like Rackspace Cloud Computing, SoftLayer, GoDaddy, HostGator, dreamhost and MediaTemple. DevOps and Continuous integration: Docker + vagrant, Vagrant + Puppet, Puppet + Git, Docker + Ansible. Continuous integration with Jenkins, travisCI, distelli and more... 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. 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.
For the past 5 year i have developed a variety of web based application using Python/Django based on google app engine and amazon web services using SQL and NoSQL databases.On the frontend side i have used HTML/CSS, CSS3, jQuery, less, twitter bootstrap. I have mostly worked for startups which gives me opportunities to learn new things each day. I am seeking to face new challenges to grow myself as developer and provide solutions for your business.
Over 4 years of IT experience in Server Systems and Network solutions maintenance and support. Proven track record of installation, configuration and migration of High Availability Windows and Linux servers with different flavors (CentOS, Redhat, Ubuntu, Debian, Fedora, Suse. etc) Linux: LAMP system administration, SSL, MySQL, Postgres, Oracle, Apache, Ngnix, Tomcat, Squid, Proxy, VPN, DNS, Zimbra, Monitoring tools and Alerting system (Nagios, Cacti, MRTG, bandwidthd),Mail Servers(Qmail/Postfix/Sendmail/SquirrelMail),iptables, shorewall, samba, NFS, VSFTPD, SVN Windows: Active Directory, Domain, IIS, MS SQL 2005/2008, WSUS,lync,System Center Monitoring and Alerting system My core competency lies in providing complete support of Server administration and User support,Expert in cloud managanement (Amazon, Rackspace, Softlayer), Router config (CISCO, Miktrotik, Cyberoam, SonicWall), cpanels (ispconfig, webmin, Parallel Plex panel, WHM, Directadmin), bash/perl scripting. I have Developed range of Web Sites using CMS (WordPress,Drupal,Joomla). I have Good Skills in Virtuallization (Virtualbox,Xen,ESXI), VOIP (ELASTIX), PABX(Matrix), windows shell. Vtiger CRM, Sugar CRM, osticket
For expert and experience you should hire me as a system administrator or network administrator for your valuable projects. I have a great work experience of lunux Debian, Redhat, Fedora, Amazon cloud AWS EC2 server, amazon cloud RDBS, Rackspace cloud server, Digital ocean cloud server, VPN, CISCO routers and switches, virtual box, VMware, Mikrotik router, Linux Quagga router, HTML, PHP, shell scripting, Windows 2003, 2008 with exchange 2003 and exchange 2007. I have also many years practical experience of linux DNS, Proxy, Mail, Virtual web, FTP, VPN, SAMBA, NFS, NTP, Virtual machine, Mysql and many web based application. I am always ready to start with your journey of projects.
Hey , My name is Alexander. I'm a system administrator with 7+ years of experience. I'm willing to help you with your server or sites migration. In short: * OS: FreeBSD 6.x-10.x, Ubuntu, Debian, CentOS; * Firewall: PF(w. NAT), iptables, FirewallD; * Web-servers: Apache 2.2-2.4, nginx; * DNS: Bind, Unbound; * Backup: Bacula, tartarus, rsync; * Monitoring: Zabbix, NewRelic, Munin, Nagios; * Virtualization: OpenVZ, KVM; * Databases: MySQL + optimization, MariaDB; * VPN: IPSec, MPD; * WHM/cPanel, Plesk, ISPManager, dreamhost panel; * AWS: EC2, EBS, S3, Glacier, Route 53, SES; * Mail servers: Postfix, Sendmail, Dovecote; * Issue tracking system: Redmine, Wrike, Confluence;
I am an applied mathematics researcher seeking part-time freelance programming work. My interests include: Machine learning Linguistics. Particularly natural language and syntactic analysis Financial data analysis Any interesting application of mathematical techniques in a practical setting. My background in mathematics makes me well suited for any task which requires learning and applying complex ideas and techniques; my years of programming experience give me a constantly expanding toolkit and the ability to quickly learn new tools as the need arises; and my experience in an academic environment prepares me to effectively communicate difficult concepts to individuals with any level of experience in the field. If my skills and attitude make me a good fit for your project but I do not have some prerequisite skill listed on my profile, feel free to contact me anyway. I am always willing to pick up new skills and can often do so quickly enough that you will not notice a learning curve.