Database Administration Freelancers

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  1. Giang Le

    Giang Le

    Full-Stack Groovy/Grails Developer

    Vietnam - Last active: 3 days ago - Tests: 5 - Portfolio: 3

    Full stack developer with lots of experience in Grails, Java, J2EE, Hibernate, Spring, Struts, SpringBoot. Professional and academic background on architecting and building Multi-Tenant Software as a Service. I am a member of jcabi team. jcabi is a collection of small and useful Java components, which are not big enough to make their own projects. (http://www.jcabi.com/) I am also proficient in making bots,web crawlers, email scrapers , automation tasks based on selenium web driver/htmlunit and jsoup. I have been heralded as the "bot master" by various clients I have worked with due to my outstanding performance in automation jobs. My skill sets include: * Languages: Java, Groovy, SQL, C, Ruby, CSS, HTML, JavaScript, PHP * Frameworks Grails, Bootstrap, Ruby on Rails, Hibernate, Hadoop, Spring, SpringBoot, YII, Laravel * Libraries/APIs Java Collections, jQuery UI, jQuery, JAX-RS, Google Gson, JavaMail, Amazon API, Asterisk-Java, Selenium, HTMLUnit, Jsoup * Databases: - Relational: Mysql, PostgreSQL, Oracle, DB2; - NoSQL: Redis, Memcached, SimpleDB; In my case, I enjoy working with small businesses and individual decision makers to provide architectural and custom business solutions that help my clients resolve mission-critical problems, grow their business, and improve their revenue stream and profitability.

    $33.33 /hr
    5,952 hours
    5.00
  2. Oleg Vakheta

    Oleg Vakheta

    Go/Golang/Perl/MySQL/JavaScript Developer, Linux Administrator

    Ukraine - Last active: 26 days ago - Tests: 9

    I love Go, Perl and Linux )) Have more then 7 years experience in Perl developing, more then 2 years in Go and I'm also passionate Linux administrator. Now I'm concentrated in developing for Web, using Go, Perl+fastcgi+nginx. I made many parsers, system scripts, web systems. My main directions in work: - Go (Golang), Revel, Martini, pure "net/http" for handling routes; - Perl developing ( web systems, scrapers/parsers, system scripts ); - Web developing, using: Perl, Javascript, Jquery, Ajax, HTML, CSS; - Linux administration; - MySQL server and queries optimization for high loading systems; - PostgreSQL - queries optimization, writing functions, triggers; - security audit; - SEO. I am open for new knowledge and critique.

    $27.78 /hr
    1,605 hours
    4.62
  3. Christopher James

    Christopher James

    PHP Web App Developer: Any Framework, APIs and UI. 15+ years (USA)

    United States - Last active: 1 day ago - Tests: 6 - Portfolio: 12

    Since 1998 I have developed dozens of web applications focusing on a wide-range of industries including custom search engines, affiliate marketing, real estate solutions and worker safety. As an autodidact, I pride myself on learning new technologies and continually improving my skill-set. As a freelancer, I believe in professionalism, clean code and representing my craft to the highest degree possible. On the server-side, Laravel is my current PHP framework of choice, although I am comfortable working with Zend, CodeIgniter, Cake and Yii. For the database layer, I have 14 years of experience with MySQL. On the client-side, I prefer jQuery, Backbone and Twitter Bootstrap. Although I am not a graphic designer, I know my way around the Adobe software suite. I write standard compliant HTML5 and CSS3. I have an eye for useable, clean and obvious functionality. I have experience with many APIs, including Amazon, Box.net, Infusionsoft, Facebook, Twitter, PayPal, eWay, Authorize.net and Google. I can write APIs from scratch and give your application a RESTful interface. I am seeking opportunities to build custom web applications from the ground up or taking an existing code base and improving upon it.

    $110.00 /hr
    6,871 hours
    5.00
  4. Paolo Calvi

    Paolo Calvi

    Django Specialist and Senior Web Developer

    Brazil - Last active: 1 day ago - Tests: 2 - Portfolio: 6

    I love to develop in Django. I can define myself a Senior Programmer and a Technical Leader, specialized in projects that uses Python/Django as backend and Angular JS as frontend. The two frameworks connected through methodologies like RESTful calls, Websocket (socket.io) or traditional HTML server side rendering. As corollary I have robust knowledge of Linux servers management and Python application environment deployment. My particular experience makes me capable of autonomous development on small projects plus a great integration skill with teams on larger ones. An in depth knowledge of all development problematics makes me a competent Project Manager and technical advisor. ✎ Languages & Frameworks - Python : Django - PHP: Yii ☉Databases - PostgreSQL - MySQL, - SQLite, - MongoDB ☺ Frontend - Javascript, JQuery, Angular.js - HTML, CSS - Twitter Bootstrap ♨ Servers - Amazon EC2 - Heroku - Linode - Gentoo - Ubuntu - Fedora Core

    $27.78 /hr
    3,873 hours
    4.28
  5. Andrii K.

    Andrii K.

    System Administrator

    Ukraine - Last active: 1 day ago - Tests: 5 - Portfolio: 5

    Last 6 years I have engaged in system administration using Apache2, Nginx, PHP, Perl, Python and MySQL including sites for startup companies and small businesses. extensive experience in the deployment of sites and projects of varying complexity, and I am seeking opportunities help you to build your business. I have great experience in: - Linux maintaince/troubleshooting: Debian, CentOS, Gentoo, Ubuntu, RHEL etc - Apache2 + Nginx, Nginx + PHP-fpm, Nginx + PHP-fastcgi, MySQL, Varnish, Memcached. - Linux serverside: iptables, rsync, Bind, OpenVPN, - Mail: Exim, Dovecot, Postfix. - Cloud Hosting: Digitalocean, RackSpace, Amazon (EC2, AWS, S3), Linode, GoDaddy - Hosting providers : Softlayer, Hetzner. - Backup/Migration - Hosting panels : Plesk, whm\cPanel, ISP , DirectAdmin, Virtualmin - Virtualization: Xen, KVM, OpenVZ, Proxmox - Monitoring: Zabbix, Munin, Cacti, Nagios - CMS : Wordpress, Drupal, Magento, Joomla, CS-Cart

    $30.00 /hr
    1,997 hours
    4.99
  6. Aaron Summers

    Aaron Summers

    Linux Cloud Engineer / 14 Years Real World Experience

    United States - Last active: 1 day ago - Tests: 7 - Portfolio: 2

    Daily engineering and administration of OpenBSD, FreeBSD, Linux and Windows based operating environments. LAN/WAN: Experience identifying a large number of network and host based security problems. Stabilized the bandwidth billing system for accuracy and provided assistance to the web development team. UNX(tm)/Linux/BSD: Designed and built a custom Enterprises Data Ware House utilizing RedHat Enterprise Linux, IBM Information Server, and the Sun N1 toolkit. Back ported the RedHat clustering tools and GFS modules for RedHat Enterprise Linux 4. Customized the operating environment for running the IBM Information Server 8 family of applications, consisting of IBM DB2 V 9.3, IBM WebSphere 6.0, IBM DataStage and IBM QualityStage. Was the single onsite operations point for the HP-UX, Solaris, FreeBSD, MacOS X, and Linux machines. Wrote custom tools for monitoring and metrics. Fluent in the change management process as it relates to Sarbanes Oxley, internal, and external audits. Extensive documentation of custom applications, primarily our custom data warehouse solution. Designed and implemented the company's external web presence using Solaris 10. Utilized zones, the ZFS file system, and hardware RAID on the T2000 platform. Wrote my own tools in Perl, C, and the Bourne shell. Debugged many complex operational problems. Specialties Started running Linux around 1993, kernel was 0.99 Moved onto SunOS and Open/FreeBSD. Since have worked with HP-UX and SCO extensively. Currently work with RHEL, AMI Linux, CentOS, OpenBSD, EC2, Parallels, and Rackspace.

    $30.00 /hr
    5,798 hours
    4.97
  7. Boian M.

    Boian M.

    16yr exp - Linux Systems Architect / ISP / IT Consultant -

    Bulgaria - Last active: 1 day ago - Tests: 3 - Portfolio: 3

    * gathering customer's requirements (type of applications deployed) * specifying hardware * deploying (software and hardware installation, including in data centers) * technical writing on cloud-computing topics, security, High-availability, clusters and others * monitoring / profiling * management * architecture audits * virtual infrastructures based on KVM / OpenVZ / VMware / XEN / Sun Ray + Virtualbox * Fully-virtualized and HA architectures deployment (Proxmox, ESX, OpenStack) and network virtualization (Neutron); * network solutions based on Brocade / Cisco / HP / Mikrotik products * full internet provider development * providing adequate documentation in each stage (doc/pdf/Visio) of Linux/UNIX based systems, also managing small IT teams, looking for new challenging projects. * BIND, djbdns, mydns, ndns based DNS architectures; * Qmail / Exim / Postfix-based mail systems; * Websystems to include Apache / MySQL / PostgreSQL / PHP / Perl configurations; * Rails solutions; * Complete webhosting managment - Cpanel/WHCMS /Plesk etc.; * Backup solutions (EMC Retrospect, Open source solutions - Bacula, Amanda, ZRM etc.); * Cloud computing IAAS and PAAS(Amazon EC2, OpenStack) and related ecosystems (Ceph); * HA solutions : Pacemaker, Corosync, GlusterFS, MooseFS, DRBD, Ceph * Load testing (jMeter, Tsung, iozone, vdbench, ab, siege); * MySQL - single servers, Master/Slave configurations or Master/Master; * Tomcat/Resin based Java application servers; * Monitoring deployment and administration (Zabbix, Nagios); * Nagios / MRTG / Cacti monitoring and data acquisition; * Design/development and modification of PHP/Ruby/Perl-based web systems; * MVC framework development on Rais / CakePHP / Codeigniter; * Zibra, Zarafa, iRedMail, phplist, google apps, Also extensive experience in deployment and management of server configurations in data centers.

    $44.44 /hr
    6,408 hours
    4.97
  8. Adeeb A.

    Adeeb A.

    Quickbase Applications Architect

    United States - Last active: 1 day ago - Tests: 11 - Portfolio: 3

    -Over 12+ years of experience in IT concentrating on Database (SQL) and Quickbase development. Quickbase Expertise: -Systems Analysis and design -Process workflows -Dashboards and reports -Custom forms (JS, HTML) -Custom Coding -3rd party application integration (client and server side) -Quenect ODBC integration Other Programming:expertise: Java, JavaScript, PHP, SQL, Ruby, C++,C, VB Please invite me for an interview to discuss my skills and experience in more detail.

    $85.00 /hr
    3,978 hours
    4.25
  9. Mahesh Y.

    Mahesh Y.

    Mailchimp YII CodeIgniter Wordpress Interspire jQuery responsive

    India - Last active: 2 days ago - Tests: 1 - Portfolio: 16

    I am a PHP Programmer having worked in HTML5/CSS3/jQuery, UI/Frontend/Backend, Codeigniter, YII, Kohana, Mailchimp, Mandril, socket layer, SOAP/REST API, Social Media API, JSON, Interspire, clickbank API, Google API, Social Media API, Paypal Integration. I have developed few online systems, responsive websites and portals. I am working as a web application programmer since 7 years and having very good exp in leads generation areas, I have developed few application to see revenue report, conversion report, leads generated report, leads sold report, affiliate revenue report, profit earned reports and many more.

    $16.67 /hr
    1,499 hours
    4.78
  10. Ivan Ershov

    Ivan Ershov

    Cloud Architect/Engineer/Devops / Linux Admin

    Russia - Last active: 1 day ago - Tests: 11 - Portfolio: 2

    Over the last 10 years, I have been working as technical support engineer/team leader/infrastructure architect for the different companies with on-premise/cloud hosting. My competency lies in planning, development, deployment and setup of the environments from scratch, troubleshooting/support/improvement of existing production systems based on Linux/Unix with the focus on automation and high availability. 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. Operating systems: Debian/Ubuntu, Redhat(Fedora, RHEL, Centos), Suse, AmazonLinux Level of skill with Unix/Linux: RHCE MailServers: qmail, postfix, sendmail etc Databases: Postgresql, Oracle, Mysql, noSQL databases (Mongodb, Cassandra, Couchbase, Redis etc) Clustering: RHCS, terracotta, heartbeat, pacemaker, distributed balanced setups Programming, scripting languages: Bash, PL/SQL, Ruby Clouds: AWS/Tata/RackSpace/CloudStack/Openstack/Azure Automation: Chef/Puppet, RightScale, AWS Opsworks,CloudFormation etc Continuous integration/deployment: Docker, Atlassian tools, Jenkins, SVN/Git, Codebase etc. Loadbalancers/proxies: Clouds LBs, Haproxy, mod_jk, Squid, Apache, Nginx Application servers: tomcat, jetty, jboss, Apache, Nginx, different PHP-based servers Monitoring: Nagios, Zabbix, Newrelic, OMD etc English: fluent Availability: up to 30hrs/week

    $38.89 /hr
    1,850 hours
    4.96