Unix System Administration Freelancers

Showing 73 freelancers

Unix System Administration Freelancers

Showing 73 freelancers

  • Senior software engineer

    Over the last years, I have developed a wide range of solutions: Mobile applications, in Lua (for both iOS and Android operating systems) Desktop solutions, in C#, C++ Client-server solutions in C#, C++, Perl, PHP Web solutions in ASP.NET … more

    Over the last years, I have developed a wide range of solutions: Mobile applications, in Lua (for both iOS and Android operating systems) Desktop solutions, in C#, C++ Client-server solutions in C#, C++, Perl, PHP Web solutions in ASP.NET / C#, PHP and Perl CGI. I used various kinds of relational databases, such as SQLite, MySQL, PostgresSQL, MSSQL, Sybase and Oracle, and various data representation languages, such as XML, HTML and XHTML. My freelance clients included all kinds of companies and business setups and I was employed in various different business settings described in more details in my employment history. I was employed as a C / C++ software engineer in a world-leading software publisher in financial risk management, and as a senior technical consultant for a world leader in sustainability software. My core competencies lie in complete end-to-end solution development, management and analysis and I am seeking opportunities to help you build solutions for you or your business.  less

    corona-sdk ios-development android-app-development php mysql javascript c# .net-framework project-management unix-system-administration 00 more less
    • $74.44 HOURLY RATE
    • 5.0
    • 1590 HOURS
    • UNITED KINGDOM
    • LAST ACTIVE
    • 8 PORTFOLIO ITEMS
    • 5 TESTS
    GROUPS:
  • Systems Administrator, Technical Support, and Sharepoint

    I am seeking opportunities where I can apply my skills on PC, server, network and technical support. I am here to provide solutions remotely (using various remote desktop sharing tools). I am knowledgeable in the following areas as well: HTML, CSS, Sharepoint, PHP, Joomla, Drupal, Wordpress and databases such as MS SQL, MySQL and Oracle.

    windows-administration linux-system-administration unix-system-administration network-administration sql microsoft-sharepoint-administration helpdesk-support html css wordpress 00 more less
    • $15.00 HOURLY RATE
    • 5.0
    • 2959 HOURS
    • PHILIPPINES
    • LAST ACTIVE
    • 19 PORTFOLIO ITEMS
    • 8 TESTS
    GROUPS:
  • PostgreSQL Administration, Design and Automation

    I'm offering Administrative and Design services for the projects using PostgreSQL. I have more then 10 years experience in projects including: parser, client/server, network application development (C / Bison / Flex); real-time payment card authorization (C / ISO8583 protocol); web-development (HTML … more

    I'm offering Administrative and Design services for the projects using PostgreSQL. I have more then 10 years experience in projects including: parser, client/server, network application development (C / Bison / Flex); real-time payment card authorization (C / ISO8583 protocol); web-development (HTML, CSS, PHP, Python); database administration (ORACLE / PostgreSQL); tasks automation (shell: bash / ksh). My current assignments include: DBA and Environment administrator's team management, PostgreSQL database administration in the sharded setup, distributed OLAP application design.  less

    postgresql database-administration database-modeling unix-system-administration linux-system-administration database-design database-testing oracle-database nosql unix-shell ksh-korn-shell 00 more less
    • $29.50 HOURLY RATE
    • 4.9
    • 1519 HOURS
    • LATVIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 3 TESTS
  • Linux programmer

    Linux programmer with over then 10 years old experience. Skills: Linux (Debian) administration Web development: PHP OOP, MySQL, HTML5/DHTML, JavaScript Data mining: Java webdriver, PHP Curl regex System administration: Bash and Perl scripting AWS EC2: build new LAMP AMI , AWS PHP SDK, PVGRUB AMI, EBS, snapshot management. Android: Java, PhoneGap

    linux-system-administration php mysql java javascript perl amazon-ec2 selenium-webdriver git unix-system-administration lamp-administration 00 more less
    • $22.22 HOURLY RATE
    • 5.0
    • 1510 HOURS
    • RUSSIA
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 8 TESTS
  • Expert in GNU/Linux/Opensource/Embedded software

    Looking for challenging new projects which can effectively use my talents and creativity, to generate cost effective software solutions. I'm a world class C programmer (primarily on Unix/Linux) and I'm used to making "impossible" tasks "possible". I … more

    Looking for challenging new projects which can effectively use my talents and creativity, to generate cost effective software solutions. I'm a world class C programmer (primarily on Unix/Linux) and I'm used to making "impossible" tasks "possible". I have a great deal of expertise in: * real time embedded systems * cross compilation/software construction * source control * network programming * system administration * kernel level programming/device drivers * image processing * performance and metrics  less

    c unix-system-administration embedded-linux linux-system-administration tcp-ip driver-development assembly-language agile-software-development object-oriented-design image-processing version-control freebsd dhcp git subversion reverse-engineering make-build-script 00 more less
    • $83.33 HOURLY RATE
    • 4.8
    • 3026 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 4 TESTS
  • Expert Python developer specialized in Web

    Hello there! I'm a good Python-developer. And it's not just my opinion. I have experience with almost all uses of Python - from system to web developing, so i always can help you with your problems. I'm specialized … more

    Hello there! I'm a good Python-developer. And it's not just my opinion. I have experience with almost all uses of Python - from system to web developing, so i always can help you with your problems. I'm specialized in the following technologies: Frameworks: Django, Flask, Tipfy, webapp, jQuery Data storing: MySQL, Postgres, sqlite, MongoDB Object-relational mappers: SQLAlchemy, Django, Mongoengine, Mongokit Markup and templates: Jinja2, Mako, Cheetah, Django, XHTML, XML, XSLT Public services' APIs: Twitter, Tumblr, OpenSocial, Facebook Don't worry if you want me to use something else - it's not a complete list and i'm totally open to learning new things and i do it very quick:) Give me a chance to make good solutions for you!  less

    python django-framework flask twitter-api google-app-engine unix-system-administration mongodb postgresql mysql facebook-api rest soap website-development sqlite database-programming ecommerce-consulting mac-os-app-development linux-system-administration windows-administration nginx apache-administration lighttpd 00 more less
    • $33.33 HOURLY RATE
    • 4.6
    • 2509 HOURS
    • RUSSIA
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 11 TESTS
    GROUPS:
  • Professional Web Scraper- Data Scientists(Extraction & Parsing Expert)

    I specialize at Web scraping & Reporting Services, with emphasis on a tight feedback loop with clients. Providing best quality Web Scraping services and EXPERT in data mining / extraction / crawling / screen scraping, parsing & Reporting Services. I have scraped data from websites … more

    I specialize at Web scraping & Reporting Services, with emphasis on a tight feedback loop with clients. Providing best quality Web Scraping services and EXPERT in data mining / extraction / crawling / screen scraping, parsing & Reporting Services. I have scraped data from websites that require parsing JavaScript/AJAX. I use HP and Amazon's EC2 & S3 for my web crawling infrastructure. I can provide scraped data in whatever format is required: CSV, XML,JSON MySQL,TXT etc. (Most clients prefer CSV) I am a pretty fast learner who is able to find simple solutions for seemingly complex problems. As for the technical side: I have professional experience mainly in PHP and server(Ubuntu) and client-side javascript as well as Python, and a couple of different relational and non-relational databases. Anything else you want to know? The ball is in your court.  less

    crawlers web-scraping data-scraping data-mining php curl mysql amazon-ec2 google-analytics-api amazon-s3 regular-expressions data-warehousing web-content-management data-entry tortoise-svn unix-system-administration ubuntu phpmyadmin internet-research amazon-web-services website-development facebook-api 00 more less
    • $20.00 HOURLY RATE
    • 5.0
    • 2985 HOURS
    • BANGLADESH
    • LAST ACTIVE
    • 13 PORTFOLIO ITEMS
    • 2 TESTS
    GROUPS:
  • 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
    • 4663 HOURS
    • MEXICO
    • LAST ACTIVE
    • 6 PORTFOLIO ITEMS
    • 4 TESTS
  • Software Engineer specialised in Desktop Software for Windows/Linux

    I have a degree in Computer Science B.Sc from the university of Manchester and was one of the top of my class in all of the programming courses (Java, C, C++, C with OpenGL) I have worked in the … more

    I have a degree in Computer Science B.Sc from the university of Manchester and was one of the top of my class in all of the programming courses (Java, C, C++, C with OpenGL) I have worked in the defence industry working on UAVs (aka Drones) and on the Julius Chinook helicopter and both of these were coded in C++ and Microsoft Visual Studio 2008. I spent a period of my time working on a legacy system written in Borlund C++ and converting it to a new system using Visual Studio. I also spent a period of time writing C in Eclipse on an embedded system (this was for the JULIUS Chinook project) I am extremely willing to negotiate on price and for English projects the language barrier certainly won't be a problem. I am extremely flexible and am always willing to work late or make additional changes or fixes as and when required. Fixes to problems can certainly be negotiated on price/time wise.  less

    c c++ java c# microsoft-visual-studio eclipse linux-system-administration atlassian-jira unix-system-administration subversion irc-server-administration 00 more less
    • $30.00 HOURLY RATE
    • 4.8
    • 3650 HOURS
    • UNITED KINGDOM
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 14 TESTS
    ASSOCIATED WITH:
  • 3D Graphics, Animation and Web Development

    We are a full service company with the experience and expertise to deliver exceptional quality video production to any project whether it be corporate or promotional videos, training videos, music videos, commericals, documentaries or full production television shows. For video … more

    We are a full service company with the experience and expertise to deliver exceptional quality video production to any project whether it be corporate or promotional videos, training videos, music videos, commericals, documentaries or full production television shows. For video, television or film, our broadcast motion graphic service can deliver anything from logos, animations, lower-thirds, 3D graphics and complete brand packages. We are skilled and experienced in all aspects of the video production process from start to finish. More than 7 years of experience in software development. Created complex back-end management systems including content management, e-commerce, customer relations and communication interfaces. The projects based on PHP in conjunction with various other web development technologies. PHP (pure PHP, PHP with OOP, PHP with frameworks), SQL (generic SQL, MySQL, PostgreSQL, ORM), JavaScript (generic JavaScript, JQuery, AJAX), Comet server (real-time data streaming), XHTML, CSS, XML and SVN are used. Designed layouts and templates for various small companies and individuals. I have worked in the following Areas: web site development with security access, supplier order form, category manager, supplier and retailer registration forms network troubleshooting/maintenance user software support software testing intranet database applications dynamic content applications internet marketing e-commerce applications multi-level affiliate systems ads/clicks network systems content management systems file upload/download management systems management systems in general  less

    adobe-after-effects adobe-photoshop javascript ajax actionscript-2 zend-framework jquery autodesk-3d-studio-max mysql html xml css ssl apache-administration unix-system-administration python 00 more less
    • $33.33 HOURLY RATE
    • 4.9
    • 1356 HOURS
    • ARMENIA
    • LAST ACTIVE
    • 55 PORTFOLIO ITEMS
    • 4 TESTS
    ASSOCIATED WITH:
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