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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

Giang Le

Giang Le

Full-Stack Groovy/Grails Developer

Vietnam - Tests: 5 - Portfolio: 3

Full stack developer with lots of experience in Grails, Java, J2EE, Hibernate, Spring, Struts, SpringBoot. Professional and academic background on architecting and building Multi-Tenant Software as a Service. I am a member of jcabi team. jcabi is a collection of small and useful Java components, which are not big enough to make their own projects. (http://www.jcabi.com/) I am also proficient in making bots,web crawlers, email scrapers , automation tasks based on selenium web driver/htmlunit and jsoup. I have been heralded as the "bot master" by various clients I have worked with due to my outstanding performance in automation jobs. My skill sets include: * Languages: Java, Groovy, SQL, C, Ruby, CSS, HTML, JavaScript, PHP * Frameworks Grails, Bootstrap, Ruby on Rails, Hibernate, Hadoop, Spring, SpringBoot, YII, Laravel * Libraries/APIs Java Collections, jQuery UI, jQuery, JAX-RS, Google Gson, JavaMail, Amazon API, Asterisk-Java, Selenium, HTMLUnit, Jsoup * Databases: - Relational: Mysql, PostgreSQL, Oracle, DB2; - NoSQL: Redis, Memcached, SimpleDB; In my case, I enjoy working with small businesses and individual decision makers to provide architectural and custom business solutions that help my clients resolve mission-critical problems, grow their business, and improve their revenue stream and profitability.

$33.33 /hr
6,848 hours

Sophy Ung

Sophy Ung

Backend Developer

Cambodia - Tests: 2 - Portfolio: 7

Professional and self-motivated software engineer with 8+ years' experience in Ruby and Javascript. I am interested in building quality software and using good engineering practices like test-driven development and agile methodology. I am interested in building quality software that not just works, but also well designed, easy to maintain and extend in the future. Over the past 8 years I have been designed and developed a variety of business applications ranging from business directory to prototyping tool. I extensively use Ruby, Ruby on Rails, NodeJS, Redis, Postgresql, MySQL and Amazon EC2 to build back-end application and RESTful web services.

$100.00 /hr
6,412 hours

Eric S.

Eric S.

Senior Web & Mobile Expert

China - Tests: 32 - Portfolio: 25

Web Master with 8 years of experience in designing, developing, improving and maintenance. For the last 2 years, I worked on 3 projects as project manager & developer and led them to success. Always trying to complete project perfectly by suggesting innovative solutions. *** Areas of Expertise *** - Advanced programming and designing skills - Project Management - Risk Management and solving skills - Teamwork - Website Optimization, SEO *** Technical Skills *** PHP, Ruby, NodeJS, HTML5, CSS2/3, Javascript, Java, MySQL, Oracle, PostgreSQL, MongoDB, Wordpress, Magento, Ruby on Rails, Zend, Joomla, Drupal, YII, Laravel, JQuery, JQuery UI, VelocityJS, AngularJS, Greensock, ScrollMagic Bootstrap, SCSS, LESS, Responsive Design, Parallex Design, Redmine, GetFlow, Pivotal, Git, SVN, Github, General skill in Amazon Web Services, CPanel Management, Mojohost Management

$60.00 /hr
12,335 hours

Sinisa Kusic

Sinisa Kusic

Expert Senior Front-End Web Developer/Engineer js/sass/rails/php/...

Croatia - Tests: 2 - Portfolio: 16

My career as a web designer started eight years ago in which time it has proven that even though I am a good graphic designer I am even better at coding and slicing. HTML, CSS and JavaScript are the areas in which I excel but I am also familiar with back end development languages like Ruby(Ruby on Rails) and PHP. Also, I am ready to learn new ones and expand my current knowledge of the fore mentioned as needed to the point where it makes me do my job faster, better and more efficiently. That is the way I dived into web programming in the first place and started to like it through the learning process. As an individual, I'm the person that stands out from the crowd. If you want the same for your business, then I'm the professional you should hire!

$45.00 /hr
3,752 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

Alex S.

Alex S.

Software Engineer

Ukraine - Tests: 3 - Portfolio: 2

I've got my first computer when I was 7 years old. One week later first program was ready. Programming languages and processors have changed but I can't stop till today. I help people transform ideas into websites and applications. I try to understand how things work, only after I build a solution that picks up business to the next level. I can guide client over the bridge between business process and IT, providing consulting on all steps from choosing technology to deployment and maintenance. My biggest passions in my work are algorithms and distributed systems. I believe that fundamental theory in computer science is a basis for significant achievements. It's important that every new day brings new knowledge. Based on my experience in software development, work approach boils down to the following rules: - do something only if you have all required information - if you don't have required information - ask questions - if you don't know how to do - you should know how long can it take to learn

$33.33 /hr
972 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

Hossam Saraya

Hossam Saraya

Fullstack Javascript/RoR Ninja - UI/UX Designer

Egypt - Tests: 6 - Portfolio: 9

I am a computer science enthusiast, What I really want is to work at different areas, try and master new technologies, work with supportive teams and gain different types of experience. I love to do all sort of things and use all sorts of technology playing different roles in different team. But when it comes to Frontend quality or Backend scalability, I really make wonders. You are welcome to check my website http://saraya.io and my blog http://blog.saraya.io Fields of interest: Ruby On Rails AngularJS SASS HAML Coffeescript Bootstrap Foundation PHP NodeJS Wordpress iOS Development

$50.00 /hr
360 hours

Andreas Braun

Andreas Braun

Senior Developer in Frontend / Ruby on Rails / WordPress / MVC

Germany - Tests: 11 - Portfolio: 7

Hi, I am a senior web developer with 10+ years experience. I have developed a wide range of websites. I am always trying to deliver high quality solutions before deadline. I have strong skills and good experience in the following areas. - Ruby - Ruby on Rails Refinery CMS, Spree RSpec,Cucumber,TDD,BDD Various Ruby Gems, - PHP ( OOP ) WordPress, Magento ( Theme / Extension development & customization ) - Front-End: HTML/CSS, Twitter Bootstrap, Foundation JavaScript, Ajax, Coffeescript, HAML, - JS Framework: AngularJS, D3JS, NodeJS, EmberJS - Database: SQLite, MySQL, PostgreSQL, MongoDB I am looking forward to work with you!! Thanks for your time and consideration.

$45.00 /hr
56 hours