Ruby On Rails Heroku Freelancers

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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

Alexander I.

Alexander I. Agency Contractor

Senior Java / C++/ PHP / Ruby / IOS /Angular.js Developer

Russia - Tests: 3 - Portfolio: 3

I am a Lead developer with wide range of knowledge in web development process. My primary skills are Ruby on Rails, Objective-C, Swift, PHP, Java, jQuery, Javascript, AngularJS, C++and HTML, CSS. If you need well coded and well configured web site or web application, then I am a right man who can do this job. My main principle is: correct processes provide correct results. I am very interesting in ongoing jobs and partnerships, so it is very important that my clients had be happy to work with me. Feel free to contact me any time, my team and I would be glad to discuss your project.

$35.00 /hr
6,068 hours

Ravindra Khokharia

Ravindra Khokharia

Symfony 2.x, 1.0 -1.4, php, Ruby on Rails, Heroku

India - Tests: 5 - Portfolio: 9

Serving the solutions to the clients requirements with the smiles on their faces is the biggest achievements for me, Have started career with Symfony 1.0 and keep running on that track i have worked with all the versions of Symfony including 1.X to 2.X versions. Also having knowledge of good HTML5 CSS, Web standards, Agile Methodology, Software Development cycle, and other management Skills. Have upgraded my skills with latest front end technologies like Sass, Grunt, Chef. Server processing like Docker, Continuous Integration like, Jenkins, Travis etc. Message queuing server like Rabbitmq, Resque for developing scale able applications. Integrating caching using redis, http cache, and doctrine cache to make application robust & lightning fast. I have worked 8+ years, in he field of Web development, completing around 30+ projects of enterprise level with good appreciations from companies and clients to whom i served. Still working in the field of programming gaining knowledge on the mobile technologies

$20.00 /hr
641 hours

Umair E.

Umair E. Agency Contractor

Ruby on Rails , Coffee Script , SASS , Heroku , Titanium

Pakistan - Tests: 4 - Portfolio: 6

I specialise in developing web applications using the Ruby-on-Rails and django web framework. I love working with the kinds of switched-on companies that would choose a fresh and interesting technology like Rails and djnago. I like to work with agile teams building meaty applications (ie I'm not interested in building cookie-cutter brochure-ware). I also prefer a relaxed and friendly culture ("enterprisey" corporations need not apply!). Please get in touch if this sounds like you. Specialties:Ruby-on-Rails (~5 yrs commercial exp),Django(~2 yrs commercial exp) Web applications (~8yrs commercial exp), the full web stack from (X)HTML+CSS to AJAX, MVC and DB design (~8yrs commercial exp) MsSQL , mySQL , Oracle HTML,XML, RHTML , HAML ,jQuery , CSS ,SASS Ubuntu , CentOS , Windows

$25.00 /hr
92 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

Rory J.

Rory J.

Ruby on Rails Web Application Developer

China - Tests: 6 - Portfolio: 2

8 years of web application development and 3 years of enginnering - PHP developer from 2007 - Ruby on Rails developer from 2010 - Web application engineering/development since 2012 Huge experiences, knowledges and techniques while working for several startup companies. - Experience in the wide range of web application development as well as software engineering: Traditional web application development, Realtime communication web application development, Single page web application development, Payment gateway integration, Agile development and Pair programming. - Expertise in HTML5, CSS3, Rails, Nodejs, Expressjs, Reactjs, AngularJs, JQuery, SASS, LESS, Heroku, AWS, Git, Mongodb, SQL, OOP, BDD, TDD, PHP, Magento, Wordpress

$50.00 /hr
3,613 hours

Sandor M.

Sandor M.

System/Network administrator

Romania - Tests: 7 - Portfolio: 3

Over 10 years experience as Linux administrator . Configured and maintained hundreds of servers having different tasks : web server (Apache/Nginx+php/ruby/perl), mail server (with AV and spamassassin), file server, mysql/postgresql, dns, IM server, VOIP, firewall/VPN. As a network administrator in a small WISP i built my skills up in wireless, routing/BGP, routers/swithes/firewalls, network monitoring/troubleshooting. I write my own scripts (shell/Perl) . Also i have limited experience in programming, mostly Php and C.

$40.00 /hr
4,261 hours

Dima Knivets

Dima Knivets

Software Consultant

Ukraine - Tests: 12 - Portfolio: 4

3 years at Upwork, 30 successful contracts and 30 satisfied clients. 5 years of programming experience. At the moment, I'm working mostly with a Ruby on Rails stack: both frontend and backend. I have a deep understanding of how the whole ecosystem works together, so I can deliver not only the application, but also a whole infrastructure for it: starting from a fresh server, configuring the environment, deploying the application and configuring continuous integration. I can also join the projects that are already in production and maintain or improve existing codebases. Previously, I used to do a lot of frontend stuff using HTML, CSS, JavaScript and jQuery. A bit later, I worked with more complex frontends using JavaScript frameworks like Angular.js and React. I know node.js well too, but I don’t have as much experience with it, as I have with Rails. But still, I can easily build apps using these technologies and setup both development (with building tools like Gulp/Grunt, preprocessors like SASS/LESS, uglifiers and code checkers) and production environments. Before frontend I used to work mainly with WordPress and PHP stack (Yii, Symfony, Drupal, modx, etc). When I’m not working for someone else I learn, polish or practice stuff like internet protocols, compilers and low level stuff, data structures and algorithms, distributed systems and parallel programming. My next goal is data science (machine learning, deep learning and data mining), so I’m boosting my math skills in my free time.

$50.00 /hr
447 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

Maksym Skliarov

Maksym Skliarov

Senior iOS and Ruby on Rails developer, 5+ years of experience

Ukraine - Tests: 7 - Portfolio: 1

Over the last 5 years I was building iOS apps with Ruby on Rails backend on daily basis, 11 years total in programming on different languages: Swift, Objective C, C, Ruby, Python, bash, Pascal, Delphi, Assembly (Assembler, ASM), Processing. Also I build Mac OS utility apps time to time. I really like my job and iOS with Ruby on Rails makes development process very fast and enjoyable. Here is the list of major technologies I use (I like to learn new technologies too): - social SDKs: Facebook, Twitter, Google Plus, LinkedIn, Vk, Upwork, Elance; - cloud storages: iCloud, Amazon Web Services, Parse; - push notifications: Urban Airship, Parse, Infobip, custom web services; - analytics: Flurry, Adjust, Google Analytics, Fabric (Crashlyticts), Urban Airship, Parse; - payments: Paypal, Balanced payments, Braintree, Stripe, LiqPay; - SMS and voice: Twilio, Nexmo; - maps: Google, Apple, Yandex, Open Street Map; - databases and RDBMS: - on iOS: SQLite + CoreData, Realm; - on Ruby on Rails: PostgreSQL, MySQL, SQLite; - custom UI controls: custom transitions, animations, customization of default UI controls; - web: HTTP requests, development and usage of RESTful JSON and XML APIs; - RESTful JSON API: Jbuilder, RABL, MultiJson, YAJL, Oj; - HTML template engines: ERB, Slim, HAML; - stylesheets: CSS, SASS, SCSS, Twitter Bootstrap, FontAwesome and many others; - JavaScript libraries: jQuery, Angular, React, Twitter Bootstrap, HTML5Shiv, Respond.js, Highlight.js, CKEditor, TinyMCE, Owl Carousel and many others; - deployment of Ruby on Rails projects: VPS, Heroku; - programming design patterns: MVC, Active Record (Core Data), Singleton, Decorator (Category, Delegation), Adapter (Protocols), Observer (Notifications and Key-Value Observing), Memento (saving and restoring state of object), Facade; - programming principles: REST, DRY, KISS; - version control: git, SVN (I prefer git). Please, check my portfolio here: http://www.iosonrails.com/portfolio to see my latest published projects. Thanks for reading this! Best regards, Maksym.

$50.00 /hr
1,051 hours