Ruby Developer Freelancers

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Alexey S.

Alexey S. Agency Contractor

Ruby on Rails Developer

Russia - Tests: 5

Over the last 11 years I have developed sites using Ruby, Perl, PHP, JavaScript, AJAX, MySQL and PostgreSQL. As of today, Ruby on Rails is my favorite framework for developing web applications. My goal is to work side by side with my customers to help them achieve their goals.

Groups: Engine Yard Ruby on Rails Professionals Network

Associated with: Parity IT

100% Job Success
$33.33 /hr
8,960 hours

Bosko Ivanisevic

Bosko Ivanisevic

Expert Ruby and JavaScript Developer

Serbia - Tests: 3 - Portfolio: 1

I am a developer with more than 15 years of experience. Started with development of desktop application for technical trading in C++, developed server for algorithmic trading in C++ and continued with web applications in Ruby, JavaScript and Go. This large experience in desktop, server and web applications resulted in great understanding of each layer of development of back-end as well as front-end sides. I am passionate about writing maintainable and readable code with vast experience in various fields of software architecture and development. I am very committed to fulfilling project goals and preserving my 5-star ranking. My skill set include: Backend: * Ruby * Go * JavaScript * C++ Frontend: * AngularJS * JavaScript, jQuery, Ajax, D3 * HTML5 Databases: * Relational: MySQL, PosgreSQL, MS SQL, Oracle * NoSQL: MongoDB, Redis Ruby frameworks: * Rails * Sinatra

Groups: Application Developers Alliance

100% Job Success
$44.44 /hr
936 hours

Maciej Zubala

Maciej Zubala Agency Contractor

Senior Ruby On Rails developer

Poland - 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).

Groups: Upwork Verified Developers

Associated with: Rocket Mind Software

100% Job Success
$38.89 /hr
5,527 hours

Anton Kolomiychuk

Anton Kolomiychuk Agency Contractor

Senior Ruby On Rails Developer

Russia - Tests: 3 - Portfolio: 4

Hi, glad to see you here! I'm a Team Lead and Fullstack Senior Ruby Developer. I'm specializing on high-level application architecture design, prototyping and writing solid testable code. I'm prizewinner into 2 Upwork coding challenges (oDesk's Coding Challenge and Upwork Code It Up). When I have time I contribute to opensource projects. GitHub - akolomiychuk. I'm Team Lead and Lead Developer in SmartDev. We're a fullstack developers who focus on Ruby on Rails and Yii. Besides that I'm good at establishing development workflows in existing teams - ask me for the case study! One of projects: I and my team created custom CMS and online ticketing platform for Australian company SEMIPERMANENT. Project launched in 2012. At 24 July 2014 it had 5613 sold tickets on events for designers on 3 continents and we continue improving it. I want to make products for real people. So I do not work with projects in which I'm not believe. I put my soul into every project, so it's important to me. The same way I'm not working with projects where the deadline is yesterday. I believe that deadline - it's when someone seriously messed up. I'm - about calm and confident way to move towards the goal. I'm Ukrainian, who live in Siberia - the center of Russian outsourcing. If you see anything how I can help you - feel free to drop me a line! Take care!

Groups: Coding Champs

Associated with: PurrWeb

100% Job Success
$32.99 /hr
2,174 hours

Marcin Szczepanski

Marcin Szczepanski Agency Contractor

Senior Ruby on Rails developer

Poland - Tests: 9 - Portfolio: 10

I have been developing web applications as a hobby, before it became my profession. I am a young developer but with solid experience already. I was involved in the creation of a number of interesting projects/applications. I am constantly broadening the scope of my skills and techniques. I like working in team and I'm always willing to share knowledge.

Associated with: Polcode

94% Job Success
$32.00 /hr
4,529 hours

Zbigniew Pieslak

Zbigniew Pieslak

Expert Ruby on Rails & Javascript Web Developer

Poland - Tests: 8 - Portfolio: 8

Over the last 7 years I have acted as a web developer and a Ruby on Rails expert, having the privilege of working with large international enterprises (NBCUniversal) as well as many promising startup companies. I consider myself to be a hard-worker motivated to deliver only a well-tested, scalable and performance-wise code that meets the current programming standards. During my career, I learned that understanding client's needs, good planning, proper programming experience as well as regular and honest communication are the key factors to build a successful relationship. Please have a look at my portfolio and the feedback I got from my clients. I’m passionate about learning new tools and programming languages and I quickly adapt to new environments. I’m seeking long-term relationships and new challenges. I am looking forward to hearing from you about your next project!

100% Job Success
$40.00 /hr
3,807 hours

Ivan I. Parfenchuk

Ivan I. Parfenchuk Agency Contractor

iOS/Ruby on Rails Top Rated Developer

Russia - Tests: 7 - Portfolio: 11

Hello and thanks for considering hiring 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 the interface, KIF/specta/expecta for tests and specs. I also switched to Swift for my new projects. My Ruby on Rails skill set includes working with MySQL/PostgreSQL, MongoDB, RSpec/TestUnit/Capybara, Slim/Haml/ERB/RABL, JavaScript/CoffeeScript, Ember.js, Sidekiq, Redis and other numerous gems and technologies. Feel free to contact me for any kind of work.

Associated with: uSpec

100% Job Success
$40.00 /hr
1,775 hours

Jose miguel R.

Jose miguel R.

Senior Software Developer / Agile / DevOps / Ruby / C# / SQL / JS

Bolivia - Tests: 11

I'm a Senior Developer with 10 years experience, including exposure to SysAdmin tasks and DevOps. I'm an agile developer, who practices BDD while trying to master Ruby and Ruby on Rails, also I have a lot of experience with C#, JavaScript, SQL and Web technologies from my corporate background. I've been using Linux since the early 00's, I prefer Vim and I manage my infrastructure with Vagrant, Docker, Ansible and shell scripts. - Technical Skills * Ruby / Ruby on Rails / Sinatra / Grape * .Net Framework / C# / VB.Net / Asp.Net / MVC / NHibernate * SQL / MSSQL / MySQL / PostgreSQL * Javascript / jQuery / jQuery.UI / AngularJS * HTML / CSS * Testing / BDD / MSpec * GNU / Linux Administration - Other characteristics * Convention over configuration * Behavior driven development / Test driven development * Continuous integration * Progressive enhancement * Agile development

86% Job Success
$45.00 /hr
4,586 hours

Krzysztof Rygielski

Krzysztof Rygielski

Ruby developer

Poland - Tests: 2 - Portfolio: 7

I always enjoy new challenges and learning modern technologies while problem solving, always doing my best to fully immerse in assigned tasks. I believe I have excellent communication skills as I used to work as member of remote foreign teams, always with a positive feedback from a customer. Having over 8 years of experience in both backend and frontend development, I believe I'd fit well into any existing developer team, as well as I could take up on any short or long term freelance commission. Besides that, I'm also a devoted husband, loving father and passionate aikidoka. Anything I do, I do with passion, both in private and professional life.

$44.00 /hr
104 hours