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Maciej Zubala

Maciej Zubala Agency Contractor

Senior Ruby On Rails developer

Poland - Last active: 2 days ago - Tests: 4 - Portfolio: 6

Software development is not only my profession but also my greatest passion and hobby. This is why I spend majority of my free time improving my programming skills, learning new concepts, technologies, languages and tools. I get the greatest satisfaction when products I develop are released to the world and people start using it - that makes me want to spend more time at work. When not in front of my monitor, I'm probably taking care of my daughter or doing some sports (tennis and swimming most of the time).

Associated with: Rocket Mind Software
$38.89 /hr
5,426 hours
4.60
Andriy P.

Andriy P.

Senior Software Engineer (Ruby, Ruby on Rails, Jav...

Ukraine - Last active: 7 days ago - Tests: 8 - Portfolio: 4

Have 10 years of commercial software development experience. 6 years, I work with Adobe Flex 3/4 and AIR technologies. Using MVC, design patterns, PureMVC / Caingorm / Mate / Robotlegs frameworks, strong knowledge of performance issues solving, memory leaks, working with large data sets in Flex, custom components development, spark skinning. Last 4 years, I work as senior Ruby on Rails engineer. Using Ruby, Ruby Rails, Javascript / Coffeescript, CSS / SCSS, HTML5 / HAML, Bootstrap, Backbone, AngularJS, Handlebars, jQuery, Ajax.

$38.89 /hr
2,373 hours
4.91
Alex Fortuna

Alex Fortuna

Senior Ruby on Rails Developer / Development Consu...

Russia - Last active: 1 month ago - Tests: 9 - Portfolio: 2

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.

$37.00 /hr
2,460 hours
4.64
Dmitry P.

Dmitry P.

Senior Ruby On Rails full stack developer

Poland - Last active: 23 hours ago - Tests: 1 - Portfolio: 2

I have perfect 5 star rating at another freelance site (elance.com) as well - http://goo.gl/A9OgE1 I've written my first program when I was 5 years old, for 9 years I'm doing it as my profession. I've started with PHP but for purpose of more productive work switched completely to Ruby On Rails 4 years ago and mastered my RoR skills for dozens of projects since then. I'm not afraid of challenges, very self sustainable and motivated, always deliver on time. My skills are: Program languages: Ruby On Rails, Node.js (for high load backends) Code management: Github / gitlabs Databases: Mysql, postresql, mongoDB Deployment: Heroku, Capistrano, Docker, Debian-based linux distros Frontend: HTML5, CSS3, HAML, LESS, SASS, Twitter Bootstrap Javascript: Deep knowledge of pure JS, 9 years of experience with jQuery, dozens of plugins, can work with Angular.js, backbone.js (but not specialized in) Experience with API: Paypal, Twitter , Facebook , Google, Google Maps, Shopify, Netsuite, Constant Contact etc. Issue tracking and communication systems: Redmine, Github issue tracker, slack, basecamp Here are my latest project built by me: Huge highload online marketplace - http://goo.gl/oElo0L Shopify and constant contact integration - http://goo.gl/xoU02t Site monitoring solutions - http://goo.gl/dKwaej Unique project to stresstest websites - http://goo.gl/cFhrUD

$45.00 /hr
781 hours
5.00
Artem S.

Artem S.

Ruby on Rails/Flash AS3 developer

Russia - Last active: 1 day ago - Tests: 5

Hello, and thanks for viewing my profile! I'm awesome web-developer, who can build you any product you want in any, ever almost impossible deadlines. I always do my best in learning new approaches to create a wonderful things, and do even more to deliver all this awesomeness into your product. My key – is caring about what I do and how I do. Send me a message and you'll never regret. I'll make you and your users happy. Knowledges: Ruby, Ruby on Rails 3/4 HTML/HTML5/HAML/Jade/Slim/erb CSS/SCSS CoffeeScript/JavaScript node.js ActionScript 3 / Air (Adobe Flash technology stack) with cross-compile to mobile platforms (with starling) PaaS: AWS, Heroku, Nodejitsu. MySQL, PostgreSQL, sqlite3. mongoDB, redis, memcached. TDD/BDD – RSpec, Capybara, jasmine SVN, Git. Twitter Bootstrap, socket.io, jQuery, sugar.js, underscore and dozen of other popular libraries. Experienced with building RESTful API. Experienced with a highload. Background jobs with existed solutions (resque, delayed jobs, etc) and just pure Rake & Cake tasks for automating processes. oAuth with popular social networks (Facebook, Twitter, Vkontakte). Used to work with Wowza Media Server (live video streaming), with writing plugins to it. ... and even more. If you are still in doubt – just contact me and I tell you how exactly I build what you want. Thanks for viewing my profile!

$45.00 /hr
729 hours
5.00
Eugen O.

Eugen O.

Ruby on Rails, JavaScript, SQL, jQuery, AngularJS

Belarus - Last active: 15 days ago - Tests: 4 - Portfolio: 3

Senior Ruby Developer, 3.5+ years of experience in Analysis, Estimate, Design, Development and Maintenance of Web­based Software applications in a bunch of domains including News, E­ticket, Social network, ERP and Internet/telephony billing. Experience in both UI programming and Server Side programming. Profound knowledge of Ruby and JavaScript (CoffeeScript), particularly developing rich internet applications based on Rails and AJAX (JS frameworks ExtJS, Spine, AngularJS). Proficient in HTML, CSS and their wrappers haml, slim, sass. Have knowledge in C, C++, C#, Java, Erlang, Haskell, MATLAB (Octave) and R languages, Design patterns, UML, Object Oriented Design, Test/Behavior ­Driven Development, unit and integration testing (using RSpec, Cucumber and Capybara). Worked with relational databases MySQL, PostgreSQL, MS SQL and NoSQL solutions: Cassandra, Redis, MongoDB, Neo4j. Skilled in HTTP, REST, XML and JSON. Have experience in cloud solutions (Amazon AWS, Heroku) and Linux distributions. Expertise in estimating of the development efforts based on project scope on initiation phase, analysis of the complex business logic; support and maintenance of the live applications; performing of technical examination and prove­of­concepts (prototyping) for the effective solutions; code review; communication with the development team and QA; direct dialog with the Client.

$33.33 /hr
77 hours
5.00
Ivan I. Parfenchuk

Ivan I. Parfenchuk Agency Contractor

iOS/Ruby on Rails Top Rated Developer

Russia - Last active: 1 month ago - Tests: 6 - Portfolio: 14

Hello and thanks for considering me for your project! My iOS experience includes expert-level proficiency in all the core iOS components and frameworks like UIKit, Core Data, MapKit, Core Animation, Quartz 2D and so on, integration with various APIs and web services. I usually use Cocoapods for managing libraries, both Storyboards and xibs for interface, KIF/specta/expecta for tests and specs. Also, I'm already using Swift components in my production apps. My Ruby on Rails skill set includes working with MySQL/PostgreSQL, MongoDB, RSpec/TestUnit/Capybara, Slim/Haml/ERB/RABL, JavaScript/CoffeeScript, Ember.js, Sidekiq and other numerous gems and technologies. Feel free to contact me for any kind of work. Objective C, iOS, Mac OS X, C, C++, Ruby, Ruby on Rails, Ember.js, MySQL, PostgreSQL, MongoDB, Rspec, Parse, C#, REST, PHP, XML, XSLT, JSON, XCode, Unit testing, Integration testing, Core Data, MapKit, Core Animation, Quartz 2D, ShareKit, MagicalRecord, KIF, specta, expecta.

Associated with: uSpec
$40.00 /hr
1,498 hours
5.00
Rafal Jamroz

Rafal Jamroz Agency Contractor

Full Stack Java & Ruby on Rails Engineer

Poland - Last active: 28 days ago - Tests: 4

Ruby and Java developer interested in all aspects of creating a successful web application from implementing a modern and usable UI to deployment and tweaking performance. I'm focused on working efficiently and also value well designed and maintainable source code. Programming and learning about new technologies is one of my hobbies. I have 8 years of professional development experience. Started out as Java Enterprise Edition programmer in a large multinational team and then moved to smaller projects where I have a larger impact on the software being built. I'm also working as a trainer/consultant of Java related technologies as a part time job.

Associated with: Rocket Mind Software
$38.89 /hr
1,948 hours
5.00