Ruby Javascript Freelancers

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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

$44.44 /hr
986 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, Comcast) 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!

$45.00 /hr
4,382 hours

George Bragin

George Bragin

Ruby/Javascript Developer

Russia - Tests: 2

In the last 3 years I have developed many desktop-apps (C#, WinForms, WPF, XNA) and web-apps. As a web application developer I feel free with: ASP.NET MVC Framework, Ruby on Rails, Django and Google AppEngine. Also I love TDD and BDD with RSpec and Cucumber. And I think git and hg is very cool things.

$40.00 /hr
52 hours

Nadia Z.

Nadia Z.

Ruby and Javascript developer

Germany

I offer complete web application development in Ruby and Javascript, from conceptualization to deployment, excluding pure visual design, but including UX considerations. I work thoroughly, reliably, as fast as I can, and I like to keep in touch with you from beginning to end. I'm available for real-time communication during European business hours, and will structure my schedule around your timezone if your project occupies the majority of my time.

$75.00 /hr
145 hours

Stuart Halliburton

Stuart Halliburton

Full Stack Ruby/Javascript Developer

El Salvador - Tests: 1

Full stack freelance web application developer with over 5 years experience in the web application hosting/development business. Specialising in Ruby, Rails, Sinatra, Javascript, AngularJS, NodeJS, HTML, CSS, DevOps, deployment/infrastructure management and automated testing. Solid understanding of latest best practises/technologies and comfortable working in all areas of modern web application development. Most interested in long-term, on-going projects with a strong and experienced team.

$66.67 /hr
731 hours

Eduardo M.

Eduardo M.

Ruby on Rails / PHP / Javascript / Backbone.js / Angular.js

Bolivia - Tests: 6 - Portfolio: 7

- Software engineer with 5+ years of experience on Web, desktop and mobile development - Excellent communication skills and team player - Full Stack Open Source Software Engineer - Strong object oriented programming and design patterns skills SPECIALTIES AND EXPERIENCE - Programming languages: Ruby, PHP, Javascript, Java, Python, Objective-C, C, C++, Visual Basic, HTML, CSS - Web backend: Ruby on Rails, Sinatra, Node.js, Wordpress, MySQL, PostgreSQL, Redis - Web front-end: SASS, LESSCoffeeScript, Backbone.js, AngularJS, Underscore.js, jQuery - Infrastructure Environments: Amazon Web Services (AWS), Heroku, Digital Ocean - Development tools: SublimeText, Git, SourceTree, PivotalTracker, Atlassian Jira, Basecamp, Balsamiq Mockups - Operating Systems: Mac OS X, Linux, Windows - System administration with Unix based systems - Mobile development: Native iOS apps with Objective-C, native Android apps with Java - Desktop development: Desktop apps with Java and Python + GTK - Test Driven Development (TDD) - Agile software development - UX design PASSIONS - Learning new technologies - Open Source Software - Distributed and scalable systems design and implementation - Awesome and innovative UI design - Mountain biking

$60.00 /hr
3,474 hours

Vladimir Myskov

Vladimir Myskov Agency Contractor

Web Developer - Ruby, Python, Javascript, Phonegap

Ukraine - Tests: 10 - Portfolio: 3

I'm a Ruby on Rails developer, with a good experience in Python (Django/Tornado/Scrappy) and PHP (Typo3, Drupal, CodeIgniter) as well. Basically, I prefer Ruby and Python for back end development now. Besides, I was a front end LD in the past, in a team dealing with eDetailing solutions development for mobile devices (mostly for iPad) based on web technologies, specifically html5/css3. I've got a good experience in building javascript-based application and their optimization for mobile devices that way. We were using the raw javascript (no frameworks) to be flexible enough, but in the mean time I've got the Backbone, Knockout, SenchaTouch and jQuery experience. Here's my technologies/frameworks/libraries skills summary: Javascript: Ajax, WebSockets, SVG, RaphaelJS, Touch devices. Php: Typo3, Drupal, CodeIgniter Python: PyQt4, NumPy Ruby: Rails SCM: git, svn

$33.00 /hr
1,716 hours

Tyler Kresch

Tyler Kresch

Full-Stack Javascript and Ruby Developer, New Venture Consultant

United States - Tests: 1

Connect with me on LinkedIn: https://www.linkedin.com/in/tylerkresch My development philosophy is simple: "Communicate effectively to complete projects on time, under budget, and without headache." I was born and raised in the US and graduated from the University of California, Santa Barbara with a degree in Philosophy and Technology Management, focusing on New Venture Creation. I am classically trained in Computer Science, having worked for the past three years as a freelance software developer and technology consultant. I have helped hundreds of companies upgrade their technical infrastructure and move it to the cloud as well as streamline and automate their workflows with new web applications. I have developed custom proprietary software systems for multi-million-dollar companies that are active today with thousands of users. I am happy to work on both new and existing projects. I am also happy to get involved early on in the project lifecycle to assist with technical feasibility, selection of appropriate technology stack, and creation of specifications. *** Technical Skills *** Lately, I have been working primarily in Ruby on Rails and JavaScript. I focus on modular design and Service-Oriented Architecture. I am also skilled in the following technologies: -Ruby -Python -Haskell -Java -C -JavaScript (See below for JS frameworks) -HTML5 -CSS/SCSS/SASS -Postgres/MySQL -Git/Github -Heroku -Amazon Web Services I use a number of different JavaScript libraries, frameworks, and tools and am happy to learn new ones for longer-term projects. Here are some of my favorites: -Angular -Ember -React -Node -Handlebars -Express -Meteor -Grunt *** Communication, Organization and Project Management Skills *** I have excellent communication skills and habits which means that my clients spend zero time "managing" me. If specifications are not clear, I work with my clients to help them figure out what they really want so that there are no surprises upon delivery. If something comes up that puts a deadline in jeopardy, I let my clients know well in advance. I am well versed in Agile development as well as more traditional "waterfall" approaches. I complete quick iterations and provide roadmaps and development timelines, involving clients at every step. *** Why Me? *** I have managed sales teams, contractors, consultants, and have experience working as a freelance software developer myself, so I understand what is important in remote management situations such as Upwork. This allows me to help my clients avoid common pitfalls and ensure that projects are delivered on time, under budget, and without headache.

$60.00 /hr
72 hours

Alexey K.

Alexey K.

Full-stack Ruby/Rails/Sinatra, Coffeescript/Javascript, GO developer

Russia - Tests: 3 - Portfolio: 3

More than 15 years working as a software engineer. I was involved in the design and development of software of varying complexity, with a large stack of technologies used. I'm self-motivated in improving my skills and learn something new. I have a positive experience of developing and supporting backends for mobile applications using RoR and Sinatra frameworks and mobile applications for the iOS platform. I have a positive experience of designing and developing large high-load application with microservices architecture with using GOLang/Ruby as language for development, Redis for caching and fast storage, PostgreSQL for persistent data storage, RabbitMQ for message routing, JSON as message format and Docker/Ansible for deployment.

$33.33 /hr
509 hours

Rui Gomes

Rui Gomes

Web Developer - Proficient in PHP, Laravel, Javascript, Ruby on Rails

Portugal - Tests: 4 - Portfolio: 3

I've worked closely with world-class companies throughout the development of outstanding platforms that have been used by thousands. I'm proficient with PHP and I'm also a Laravel early-adopter - I've been using it since early version 3. I've developed countless applications with Laravel, attended the Laracon conference in Amsterdam and I've written several tutorials that have helped hundreds of other developers. In addition to PHP, I've also used Ruby on Rails extensively to develop complex web applications with full featured test suites. Being a Software Engineering student, you'll be sure to get solutions that are well designed, easy to scale and develop upon. I've taken a CAE (Certificate in Advanced English) by the University of Cambridge and passed with flying colours. Communicating with me won't definitely be an issue. Looking forward to working with you on your next web app!

$70.00 /hr
175 hours