Security Freelancers

Showing 277 freelancers

Security Freelancers

Showing 277 freelancers

  • Professional Solutions

    I specialize in website security (over 500 secured websites and malicious code removals), Linux administration/automation, cPanel/WHM expertise, installation and troubleshooting of different types of open source applications. I have over 5 years (and counting) experience in a web hosting company. I do not bid for projects I am not confident I can complete.

    security bash 00 more less
    • $22.22 HOURLY RATE
    • 4.9
    • 3 HOURS
    • BULGARIA
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 4 TESTS
  • Network / Cisco / Linux Administrator / Cloud Expert / AWS / DevOps

    Self-motivated professional with strong work ethic and productive self-starter – proven with success being a freelancer at oDesk. Team player - Participated in multiple projects, joining large teams, effectively co-working with other professionals Effective leader - Took over leadership and managed team resources … more

    Self-motivated professional with strong work ethic and productive self-starter – proven with success being a freelancer at oDesk. Team player - Participated in multiple projects, joining large teams, effectively co-working with other professionals Effective leader - Took over leadership and managed team resources to achieve goals meeting deadlines 16+ years as an Systems Administrator 10+ years as Network Engineer 6+ years as Cloud Expert and SaaS Architect 3+ years @ DevOps Freelancer for last 5 years (over 20,000hrs worked @oDesk)  less

    amazon-ec2 perl python sql mysql unix-shell amazon-web-services postfix linux-system-administration network-administration network-security security cisco-routers cisco-asa firewalls vpn devops 00 more less
    • $55.56 HOURLY RATE
    • 4.9
    • 23226 HOURS
    • RUSSIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 10 TESTS
  • Sphinx Search, Solr, Performance/MySQL Optimization, PHP Scalability

    Summary: Expert in Sphinx Search, Solr, high traffic sites, performance optimization, Mysql & query optimization, PHP, scalability, web security, large mysql databases Sphinx: Expert in implementing large scale, relevant, fast search & recommendation engines using Sphinx Search and Solr. Have 5 years … more

    Summary: Expert in Sphinx Search, Solr, high traffic sites, performance optimization, Mysql & query optimization, PHP, scalability, web security, large mysql databases Sphinx: Expert in implementing large scale, relevant, fast search & recommendation engines using Sphinx Search and Solr. Have 5 years working experience with Sphinx implementation, optimization, search algorithms & design. Have implemented several large scale Sphinx instances, including TradeKey.com, CityBase.com, TheReadingRoom.com, eComfort.com, Bolee.com, SatelliteVoter.com & more. Can also help improving results for existing sphinx implementations. If you are having any sort of issues with Sphinx or Solr, you should contact. Performance Optimization: I provide end to end solution for website performance improvements which include optimization for queries, mysql server, php, apache, varnish, nginx etc. I specialize improving performance for WordPress, Drupal, Magento, Prestashop, Joomla and many other open source cms. Also expert in improving front end performance by applying best practices for Front End Optimization (FEO). My services will improve speed of website & reduce hardware costs. Scalability: My services will help your site grow by handling more and more traffic efficiently. If you site is unable to handle growing traffic because of hardware or programming than I can help. Have worked with many high traffic sites like TradeKey.com (world's 2nd largest b2b portal), CityBase.com, Gamezebo.com, Bolee.com, TheReadingRoom.com, eComfort.com, i-phoney.com, Markify.com, AllergyTrails.com and many more. See SphinxConsultant.com for more details.  less

    sphinx php mysql wordpress magento drupal creloaded load-balancing prestashop apache-solr zencart nginx memcached database-administration lamp-administration apache-administration security performance-tuning 00 more less
    • $40.00 HOURLY RATE
    • 5.0
    • 615 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 15 PORTFOLIO ITEMS
    • 7 TESTS
    GROUPS:
  • Hacking&security , Web programmer,Web Designer , Softwar&script

    Over the last 5 years, I have developed a wide range of websites using HTML,CSS, PHP, and MySQL including sites for startup companies and small businesses. My core competency lies in complete end-end management of a new website development … more

    Over the last 5 years, I have developed a wide range of websites using HTML,CSS, PHP, and MySQL including sites for startup companies and small businesses. My core competency lies in complete end-end management of a new website development project, and I am seeking opportunities to build websites from the ground up for you or your business. Fast Developer : PHP,HTML/xHTML,CSS,MYSQL,JAVASCRIPT,AJAX -PSD to XHTML / HTML5 -Website Development with html5 & css3 for all browser Softwar & script: - PHP scripts - Python scripts (iRC Bots, web bots ,...) - Security and penetration testing - C++ and Qt lib  less

    php security c++ html css python c javascript adobe-photoshop mysql sql psd-to-html network-security qt database-administration penetration-testing arabic french 00 more less
    • $25.00 HOURLY RATE
    • 4.9
    • 22 HOURS
    • ALGERIA
    • LAST ACTIVE
    • 3 PORTFOLIO ITEMS
    • 5 TESTS
  • PHP/Wordpress/Joomla/Designing/HTML/CSS/Jquery/JavaScript/Logo

    I am webdeveloper , I also have some experience in the following areas : php, html, css, wordpress, joomla, phpFox, Dating Sites, Social Networking, website livechat script. Moreover, I know that to create WordPress themes, WordPress coding, Basic plug-made, made ​​in complete … more

    I am webdeveloper , I also have some experience in the following areas : php, html, css, wordpress, joomla, phpFox, Dating Sites, Social Networking, website livechat script. Moreover, I know that to create WordPress themes, WordPress coding, Basic plug-made, made ​​in complete wordpress theme, I have over 4 years experience I am mostly online on yahoo messenger and skype. We can discuss there in details in a quick way and i provide good domain & hosting services from godaddy company  less

    wordpress phpfox html css3 internet-marketing psd-to-html seo php security 00 more less
    • $5.56 HOURLY RATE
    • 4.5
    • 0 HOURS
    • BANGLADESH
    • LAST ACTIVE
    • 10 PORTFOLIO ITEMS
    • 14 TESTS
    ASSOCIATED WITH:
  • Ruby on Rails Developer and Consultant

    I'm seeking opportunities to build high-quality dynamic web solutions in Ruby on Rails. I've got a solid programming background with over 15 years experience. I'm a self-organized, disciplined and quality-oriented performer with good team management skills. A … more

    I'm seeking opportunities to build high-quality dynamic web solutions in Ruby on Rails. I've got a solid programming background with over 15 years experience. I'm a self-organized, disciplined and quality-oriented performer with good team management skills. A list of skills/features follows. * Passion for programming. * 15+ years overall development experience in 10+ languages. * 10+ years team leadership experience. * 10+ years Unix admin and TCP/IP networking experience. * 7+ years Ruby experience. * 5+ years Ruby on Rails experience. * Contributing to Ruby/Rails open source community (https://github.com/dadooda). * Clean, distinct, well-documented and reusable code is a *MUST*. * Solid understanding and everyday use of TDD (RSpec). * Strong JavaScript: raw language, jQuery, frameworks. * Everyday Git usage. * Practical programmer’s knowledge of HTML/CSS. * Hands-on experience of building high-traffic web applications in Unix environment (nginx, memcached, SQL server tuning, load testing tools, etc.). * 10+ years LAMP experience.  less

    ruby-on-rails unix-shell ruby tcp-ip amazon-web-services php javascript jquery css mysql linux-system-administration apache-administration nginx security vpn amazon-s3 amazon-ec2 firewalls postgresql c++ centos coffeescript 00 more less
    • $33.00 HOURLY RATE
    • 4.6
    • 2367 HOURS
    • RUSSIA
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 9 TESTS
  • 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
    • 4661 HOURS
    • MEXICO
    • LAST ACTIVE
    • 6 PORTFOLIO ITEMS
    • 4 TESTS
  • Senior system administrator and PHP - C - Perl developer

    Very skilled Unix system administrator, with lot of experience in Linux ( Centos, Redhat, Fedora, Ubuntu, Debian, Gentoo, Slackware ), Solaris, xBSD ( FreeBSD, OpenBSD), vpn ( openswan - ipsec, openvpn, l2tp, pptp ), clustering ( LInux Virtual Server, Linux HA, vrrp, Solaris Cluster ), cloud computing, load … more

    Very skilled Unix system administrator, with lot of experience in Linux ( Centos, Redhat, Fedora, Ubuntu, Debian, Gentoo, Slackware ), Solaris, xBSD ( FreeBSD, OpenBSD), vpn ( openswan - ipsec, openvpn, l2tp, pptp ), clustering ( LInux Virtual Server, Linux HA, vrrp, Solaris Cluster ), cloud computing, load balancing ( f5, haproxy ), VoIP ( asterisk ), databases ( MySQL, PostgreSQL), LDAP, web services ( Apache, Nginx, varnish ), security ( penetration testing, firewall policy design ), control panels ( CPanel, Plesk, Virtualmin, Ensim ), Virtualization ( VMWare Virtual infrastructure - VSphere, amazon EC2 ). As for Developing I am very experienced in C, PHP, Perl, javascript, ajax and many more to list.  less

    linux-system-administration mysql php asterisk audio-mixing audio-editing html css perl varnish-cache firewalls security network-security ipsec openvpn iptables penetration-testing postfix load-balancing pci-compliance cpanel zimbra-administration voip-administration 00 more less
    • $20.00 HOURLY RATE
    • 5.0
    • 774 HOURS
    • GREECE
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 11 TESTS
  • system administrator, python developer, IT-security specialist

    Dear potential client! I am a highly qualified professional with extensive experience. The area of my interests - Unix / Linux systems, security, and automation. I have many projects in the field of security, automation, installation and configuration of various web services … more

    Dear potential client! I am a highly qualified professional with extensive experience. The area of my interests - Unix / Linux systems, security, and automation. I have many projects in the field of security, automation, installation and configuration of various web services. I know several programming languages, but my favorite language now is Python. Self-motivated and responsible, I trying always to achieve goals that have been set.  less

    unix-system-administration python security ms-dos-administration lamp-administration centos windows-administration zabbix ubuntu firewalls autoit snort unix-shell selenium-webdriver linux-system-administration network-security puppet-administration microsoft-excel openbsd freebsd web-scraping arduino 00 more less
    • $18.89 HOURLY RATE
    • 5.0
    • 27 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 15 TESTS
loading