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Last updated: October 1, 2015
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Roman T.

Roman T.

System administrator/Web optimizator

Russia - Tests: 6 - Portfolio: 1

Project management, magento development, magento speed optimization, mysql optimization, cacti, nginx, zabbix, openvpn, bgp, centos, debian, ubuntu, windows server 2003-2008-2012, MSSQL server, iis, asp, aws, amazon ec2, red5 installator, proxmox, mongodb, virtualization, proxmox, xenserver, openx, highload projects.

92% Job Success
$88.89 /hr
1,908 hours

Diego Gutierrez

Diego Gutierrez

Systems admin, DBA, developer, application architect

Argentina - Tests: 19 - Portfolio: 2

During my 20+ years of experience, I've gone through several different IT roles: developer, analyst, database designer, database admin, systems administrator, network designer, team leader, architect, CTO. This background allows me to understand all aspects involved in application development, being able to design a complex multi platform app from the ground up as well as help troubleshooting an existing app's problems or weird system behaviour.

100% Job Success
$33.33 /hr
4,734 hours

Bhushan Kumar Sharma

Bhushan Kumar Sharma

Linux Servers AWS Cloud Hosting Security CPanel Plesk VOIP PenTest

India - Tests: 4 - Portfolio: 14

Since 2001, I have been dedicatedly working with Linux Operating Systems & Open Source. Services Provided ::- Deployment, Configuration, Security, Hardening, Monitoring, Performance Tuning, Troubleshooting of Linux Server Roles AWS – Amazon Web Services Migration of Servers Hosting Panels like WHM/CPanel, Plesk etc Asterisk Dialers, VOIP and Call Center Solutions Customization of Linux Kernel & Distro with Rebranding Faculty of Post-Graduate Degree in Computer Sciences. Firewalls & Gateways Linux HPC - High Preformance Clusters Remote Server Support & Troubleshooting L3/L4 Security Auditing of Servers & Websites Cloud & Virtualization Technical Writing VPN - Site-to-Site, Road-warrior Vulnerability Assessment & Penetration Testing Kayako

100% Job Success
$16.67 /hr
4,001 hours

Alexander C.

Alexander C.

Scala / Java / Haskell developer, Full Stack Engineer, Consultant

Russia - Tests: 2 - Portfolio: 2

Java developer with 8 years of experience. Now also Groovy(2 years) and Scala(1.5 years) developer. Java: Hadoop, Nutch , Lucene/SOLR/ElasticSearch, Morphia(MongoDB ORM), parsers/crawlers(using Apache Httpclient, HtmlUnit and own microframework), Web MVC(Struts 1.x/Grails), Java Desktop Applicatins(Swing) / Applets, webservices (w. Restlet framework), RabbitMQ Java client, Riak Java Client Scala: PlayFramework 2.x, Lift, Akka, ReactiveMongo Groovy: Groovy scripts / Gant build scripts / Gradle Databases: SQL(PostgreSQL/MySQL), MongoDB, Riak, SOLR/ElasticSearch PHP scripts, linux(fedora/centos/ubuntu) server administration, SVN / Git, SEO methods/scripts, affiliate marketing. Check my blog( also.

100% Job Success
$60.00 /hr
1,026 hours

Sergey A.

Sergey A.

VoIP CallXML developer

Russia - Tests: 10 - Portfolio: 9

I am focused on efficiency of software development. I am improving my efficiency every day with great success. I am independent freelance developer with 10+ years experience, I can be responsible for your project. High quality of code is guaranteed. My favourite technologies are StarTrinity CallXML (VoIP scripts), WPF, AJAX, WPF, MVVM, Entities Framework. Over last 13 years I have successfully developed a wide range of applications for various businesses using C#, WPF, audio/video media processing and streaming, voice/text chats, Text-to-speech, C++, SIP, RTP, TCP/IP, HTTP. Now I am willing to help you with your project fulfilling if you know what you want and if you have good understanding of what you need. With current employers I work trying to save their money and time by telling them about possible problems before the problems happen.

100% Job Success
$10.00 /hr
5,942 hours

Andres Vergara

Andres Vergara

Software Engineer + Expert Developer [English-Spanish]

Colombia - Tests: 6 - Portfolio: 14

I'm software engineer/developer. I have around 5 years of experience in the area, managing IT projects and developing a wide range and variety of applications, including: web portals, information systems and other custom solutions as scripts & templates. In this way I have worked with a variety of technologies & platforms at the back, middle and front end such as: Java, JEE, Spring, PHP, Zend Framework, CSS, HTML, JavaScript, JQuery, Ajax, Flash + Action Script SQL, PLSQL, Oracle, MySQL, Postgres SQL, SQL Server. I also have experience developing for Moodle LMS and apps for Android devices & tablets. I am seeking to build opportunities for you and your business. Thanks & regards

$15.60 /hr
1,370 hours

Micheal S.

Micheal S.

Groovy & Grails, Java - Freelance Developer

Australia - Tests: 2 - Portfolio: 2

On the author list of bitcoinj project . However I did only contribute one patch, nonetheless this required reading c code and translating functionality into java. Worked with linux for 4 years, primarily Ubuntu. Eclipse is my primary Integrated Development Environment(IDE). Initially began programming with python, learnt a little bit of C++, including integration of python and C++. Unfortunately it has been at least 2 years since working with python and C++, so my knowledge of libraries and the languages has diminished. Currently spending a lot of time with Groovy and GRails. In the last two years programmed primarily in Java. Have experimented with github. Proficient in HTML5, CSS3, and javascript. Can read and write UML diagrams. Familiar with conventional Cryptography techniques, SHA, AES. Familiar with some Zero-Knowledge Cryptographic protocols. Available for video chat.

100% Job Success
$44.44 /hr
1,176 hours

Alexander M.

Alexander M.

Software Developer C++/Qt

Ukraine - Tests: 2 - Portfolio: 5

Software Engineer with 10+ years of diverse experience in software development, systems administration, and database administration. Developer of the opensource report solution CuteReport:

$45.00 /hr
1,307 hours

Jayson Cena

Jayson Cena Agency Contractor

Linux(Debian/Red Hat),Oracle DBA, Linux Cluster Admin,Virtualization-H

Philippines - Tests: 4

To obtain a position that will enable me to experience and learn new ideas on system administration like complicated enterprise infrastructure design specially high-availability and fault-tolerant infrastructres. My core competency lies in designing new system infrastructure using open-source software. I also have some experience in VB6, ASP, PHP.

Associated with: ClusterFoundry Agency

$26.67 /hr
1,137 hours

Julio Herrera

Julio Herrera

Web Developer

Venezuela - Tests: 5

+5 years using PHP4/PHP5 and MySql. Javascript, jQuery, CSS, Twitter-Bootstrap with Less/SAAS UNIX/Linux, MVC, Git / Subversion, and LAMP toolset PSD to Wordpress theme design. Wordpress installation/migration, theme and plugin customization. Osclass customization Over 5 years developing for the Internet Object Oriented Web Developer. Strong back end developer with wide front-end skill set More than 20 years enterprise developing experience Native Spanish speaker, English (very good reading and writing skills). About 6 months of C# and ASP .Net Learning Proactive, autodidact, objectives achievement focus.

90% Job Success
$22.22 /hr
1,482 hours