Comet Freelancers

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Comet Job Cost Overview

Typical total cost of Upwork Comet projects based on completed and fixed-price jobs.

Upwork Comet Jobs Completed Quarterly

On average, 4 Comet projects are completed every quarter on Upwork.

4

Time to Complete Upwork Comet Jobs

Time needed to complete a Comet project on Upwork.

Average Comet Freelancer Feedback Score

Comet Upwork freelancers typically receive a client rating of 4.31.

4.31
Last updated: June 1, 2015
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  1. Nikolay C.

    Nikolay C.

    Brainbench certified JSE/JEE dev, DB dev, Sys-Arch

    Ukraine - Last active: 21 hours ago - Tests: 2 - Portfolio: 11

    Would you like to find a powerful Java-dev? If so, please read further... 1. Intentions I'm working as a free-lancer more than 2 years already, and worked > 12 years in scientific and software engineering areas. I'm here because I'm looking worldwide for interesting work related to software development using the following technologies (some or all): - Java 5/6/7 (JSE, Swing, CORBA, Web Services, etc.) - JEE5/6 (EJB3, JSF, Hibernate, etc.) - GWT, Spring, Struts, etc. - And other JSE/JEE-related frameworks - GlassFish, Tomcat, JBoss, Jetty, etc. - JME (CLDC 1.1, MIDP 2.0) and Android - Maven, Ant, etc. - Oracle, MySQL, PostgreSQL and other DBMS - Some sub-tasks could be related to C/C++ with STL (but NOT the whole project!) - UML and/or Agile Modeling - Well-organized Agile processes - Etc. It would be nice to be involved into software concepts and architecture development. Also it would be nice to have possibilities for applying my initiative and creativity. I'm ready to work as a free-lancer for the beginning up to 40+ hours per week), and you may hire me as a full-time employee as well. I'm ready to move mostly to any country or city. In such case I'm ready to start as a developer (or senior developer), but with possibility to grow up to TL, and further up to SA or PM (of course, starting from TL or SA would be nice). 2. Education - University Master Degree in the area of Informatics and Computer Systems 3. General Skills I have a wide working and scientific experience with dozens of technologies (> 14 years). The most deep experience I have with the following techs: - JSE5/6 and J2SE (Java Core, Multithreading, AWT, Java2D, Swing, CORBA, WebServices, Networking, etc.) - since 1998 - JEE5 (EJB3, Hibernate3, JSF, CometD, Jetty, Tomcat, JBoss, GlassFish) - about of 5 years - J2ME (CLDC 1.1, MIDP 2.0, WMA) - about a year - Other Java techs (Jakarta Commons, Log4J, Velocity, Maven, Ant, etc.) - many years - Android development (support about 0.5 years) - C/C++ and STL - since 1995 (STL from 2001) - Oracle 9i/10g, MySQL, PostgreSQL, InterBase - since 2000 - OOA/OOD/OOP and UML Modeling - since 1995 (UML from 2001) Large experience with the following platforms and tools: - Windows - since 1995 - Linux/UNIX - since 1997 - MS Office (incl. Visio and Project) and Star/OpenOffice - since 1997 - IntelliJ IDEA, NetBeans, Eclipse - since 2001 - C++Builder and Delphi - since 2000 - PL/SQL Developer - since 2005 - Enterprise Architect and other UML tools (Rational Rose, Poseidon, etc.) - since 2001 Git, SVN and CVS - since 2001 Management Skills - since 2004 (worked on TL and PM positions) Architect Skills - since 2000 (designing concepts, business models and architectures for quite complex scientific, B2C and B2B applications) Language Skills: - Russian - native - English - fluent, working language since 2001, ~1000 pages of docs written - German - intermediate (quite fluent, but non-perfect) - Ukrainian - can understand in 100%, cannot speak/write fluently 4. Contacts - You can contact me via oDesk. Usually online (GMT): - 10:00am - 5:00pm - 7:00pm - 10:00pm

    $40.00 /hr
    14,282 hours
    5.00
  2. Igor S.

    Igor S. Agency Contractor

    C#/JS Web Developer

    Russia - Last active: 21 hours ago - Tests: 5 - Portfolio: 1

    Web/desktop/mobile full-stack application developer. PhD in computer science. Microsoft certified developer. 13 years in software development. I'm fluent in written and spoken English, and got second degree as an interpreter. I used to be a PM for two years, and daily online meetings with English-speaking customers were a part of that job. I like complex tasks and can quickly dig into any technology or area of expertise.

    Associated with: Anthill

    $33.33 /hr
    3,117 hours
    4.96
  3. Sergei H.

    Sergei H. Agency Contractor

    Senior PHP / JS developer

    Ukraine - Last active: 21 hours ago - Tests: 4 - Portfolio: 4

    Senior PHP developer and architect with 10+ years of PHP development. I have a good experience of social networking development (from scratch). I know, how to build highload sites, how to build single-sign on, how to integrate with other social networks and develop API for mobile devices. CEO of thePHPGuys.com, available as individual developer and as PM / TeamLeader. Perfom development, analyzing, refactoring and management. - Deep OOP / MVC / MVP / HMVC understanding - PHP 5.3.x / 5.6 usage (namespaces, traits etc.) - Kohana framework, ORM(s) (like Kohana ORM / Jelly ORM) - Symfony 2 framework / Doctrine ORM / Doctrine ODM - CodeIgniter framework - MySQL / PostgreSQL / MS SQL / MariaDB knowledge, RDBMS arch. planning and support - Highload projects ( 200 000 + hosts per day / 2m pageviews) - Memcached / APC / WinCache - phpExcel / wkHtmlToPDF - Node-FFI / php-FFI experience - SOAP / RPC, AJAX / JSON / XML / YAML - PHP performance optimization for Linux / Windows - Deep JavaScript knowledge ( jQuery, Ext.JS, Prototype) - Node.JS knowledge, highload API development by using Node.JS - Deep ExtJS 3.x / 5.x knowledge, Sencha Touch 1.x / 2.x (minor), Phone GAP - MongoDB via PHP / Node.JS drivers - Experience with Graph API (Facebook), PayPal API, vKontakte API, Mail.RU API, Linked IN API, contributed to HybridAuth OpenSource project and other third-party APIs. - Mandrill API experience; - html tidy / html Purifier / KSES ( crawlers and parsers creation experience ); - Virtual Buckets sharding strategy for social networking; Portfolio includes: - Content Management Framework development; - Social Network development ( friends, mututal friends, personal newsfeeds); - Dating service; - Multiuser online chat system (long pooling / websockets / node.js) - Online browser-based game ( server-side, ajax) + some of client side (canvas). - Highload newsfeed site (inluding editorial back-office); - Dozen corporate websites and personal homepages; - Websockets, JSONp

    Associated with: ThePHPGuys, InVooDoo

    $33.33 /hr
    595 hours
    5.00
  4. Gabriel Dodan

    Gabriel Dodan

    Experienced Web Apps Engineer:Node.JS/PHP/JavaScript/Highstocks

    Romania - Last active: 2 months ago - Tests: 7 - Portfolio: 9

    Web Applications Engineer ( both back-end and front-end ) with 10+ years of experience. Extensive experience with: Node.JS, JavaScript, PHP, Adobe Flex, HTML, CSS, MySql, PostgreSQL, Redis, Express.js, Sails.js, Passport.js, jQuery, Require.js, Bootstrap, Highcharts, Highstocks, AJAX, Comet, socket.io, PayPal, WordPress, CodeIgniter, GIT, Photoshop As Web Applications Engineer I have built a wide range of web applications: financial web applications, real-time web application, collaborative applications, PHP Framework, tickets web application, e-commerce websites, simple websites, WordPress websites, WordPress plug-ins, video streaming My objective is to provide high quality Web Development services at affordable price. Almost always I create good business relationships with the people I work with. Personal characteristics: confident, proactive, creative, analytic thinking, dexterity to learn new technologies, I like to work on challenging and complex projects.

    $34.00 /hr
    186 hours
    4.70
  5. Constantine Stanishevsky

    Constantine Stanishevsky

    Senior Web Developer (PHP, Yii, MySql, Javascript, web-scrapping)

    Czech Republic - Last active: 12/13/2014 - Tests: 6 - Portfolio: 3

    I like complex challenging projects which require initiative and nonstandard innovative solutions. More information can be found at http://stanishevsky.com/ Developed one of the largest online stores and a social network, devoted to beading. Created Ļiñgvŭs http://lingvus.com/ — the online marketplace for freelance translators. As a freelancer, I have developed dozens of websites in various fields.

    $29.99 /hr
    355 hours
    4.81
  6. Maksym B.

    Maksym B. Agency Contractor

    WEB-developer

    Ukraine - Last active: 6 days ago - Tests: 5 - Portfolio: 6

    ● Team leader with extensive experience in Front-end development. ● Expert in GUI optimization techniques, cross-browser compatibility. ● Advanced experience in DOM, JavaScript, (X)HTML, CSS. For Desktop and Mobile browsers. ● Expert in JavaScript frameworks (AngularJS, BackboneJS), CSS frameworks(Bootstrap, SASS, YAML), JavaScript toolkits (jQuery, Underscore) ● Experienced with HTML5, CSS3 technologies. ● Experienced as a Front-end Architect. ● Impressive experience with building Off-line Web Applications. ● Experienced with a lot of services such as Google, Yahoo, Yandex, ArcWeb, MapQuest, StreetMap, etc. ● Expirienced with server-side JavaScript (NodeJS). ● Advanced TDD experience on Front-End using QUnit, Jasmine, Karma. ● Intermediate TDD experience on Back-End using Cucumber, RSpec, PHPUnit. ● Expirienced with server-side development (PHP, Ruby, Delphi). ● Able to control development flow and manage group of engineers. ● Excellent analytical, problem solving, interpersonal, communication skills.

    Associated with: SITIO Group

    $33.33 /hr
    1 hours
    5.00
  7. Roman Shuvaryk

    Roman Shuvaryk

    Senior Fronted Software Engineer

    Ukraine - Last active: 1 month ago - Tests: 1

    Over 7 years of experience in full life-cycle development of business applications with client-server technology, RIA, mobile solutions, ETL systems, hardware-depended solutions; in particular: Analyze, design and developing complex database and GUI projects Solid experience in databases design and programming Excellent knowledge of cross-platform solutions As a Software Engineer I have been working on long-term contracts as well as small assignments. Currently I am holding a position of Technical Leader. My responsibilities includes project proposals development, establishing development processes during the project start up, and tailoring it according to the client needs; coding and code review; estimating development activities on the project; mentoring development team and controlling development process throughout the project life cycle. My personal favorites: ExtJS, AngularJS, MeteorJS, MongoDB, and of course REST everywhere :)

    $22.22 /hr
    217 hours
    5.00
  8. Maria T.

    Maria T. Agency Contractor

    I'm the manager from ExtPoint team. We are skilled in complex webdev

    Russia - Last active: 2 months ago - Tests: 3 - Portfolio: 10

    We in ExtPoint have experience in development and maintenance of complex Web-projects, including Desktop and Mobile clients for them. Our two last biggest projects, HelpOnClick and CashGo.ru, are realtime (Comet-AJAX) with rich browser logic (one ExtJS-based, another jQuery-based). Also we have highload experience in them: profiling, MySQL DBA, message queues, distributing load. Fine UX development is our love. An approach to protect investments in based on Agile technics and continious feedback. We have mature business-processes in Version Control and Issue Tracking. Basically we offer the supervised work of our Jr. Developers at $23/hour, while work with high level of expertise are approximately at $59/hr. Big volumes and monthly payment interval assume discounts.

    Groups: PHPFox, SocialEngine

    Associated with: ExtPoint

    $30.00 /hr
    59 hours
    5.00
  9. Andrey Korzhuev

    Andrey Korzhuev

    Ruby and Python developer

    Russia - Last active: 01/20/2013 - Tests: 5 - Portfolio: 6

    My main area of interest is web applications. During my career I've developed a complete solutions from scratch and worked on large inherited codebases. I enjoy solving problems and believe that clarity of code matters. I'm looking for opportunities to work as an early employee of a startup or a small company, however I don't mind to subcontract a small tasks during a busy days of your team. My tools of choice are: * Ruby, Ruby on Rails; * Python, Django, eventlet, and twisted; * CoffeeScript, SASS, and HAML, however I don't mind Javascript, HTML5, and CSS3; * Backbone.js, jQuery, and underscore; * PostgreSQL, Redis, MongoDB. I'm experienced in building highly-dynamic services using such technologies as COMET and AJAX, I believe that future of web is tight integration with environment and rich user experience. I'm also functional programming enthusiast and would gladly join or contribute to your project involving Haskell or Erlang. I support open source.

    $27.78 /hr
    2,058 hours
    3.96
  10. Paul H.

    Paul H. Agency Contractor

    Mr.

    Lebanon - Last active: 07/08/2012 - Tests: 3 - Portfolio: 2

    ... Computers, programming, designing... that's me in three words! I always strive for continued excellence and I have an overwhelming zeal and passion for computers. With much knowledge of programming, I also have experience in learning and excelling at new technologies as needed. My programming skills include C++, VB.Net, C#, Java, ASP.Net, Flash, ActionScript, SQL, JavaScript, jQuery, Silverlight, WPF, WCF, Cloud Programming, Android development, CSS3, HTML5, LINQ, XML, Ajax, Comet... What interests me much is building my applications with optimized performance and security measures. I’m invariably able to provide target dates and meet these targets and to maintain appropriate documentation.

    Associated with: Twain Outsourcing

    $16.67 /hr
    31 hours
    5.00