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Balint Erdi

Balint Erdi

Budapest, Hungary
Member since August 26, 2013
Balint lives on the cutting edge of technology, and has been practicing TDD since before it became popular. He was a classic PHP developer, and has since moved on to Java, Python, and Ruby. Currently, he is in love with Ember.js. He is fascinated by functional programming and also enjoys Clojure.
Balint is now available for hire
  • JavaScript, 6 years
  • Ruby, 6 years
  • Ruby on Rails (RoR), 6 years
  • Vim Text Editor, 3 years
  • Devise, 3 years
  • CoffeeScript, 2 years
  • Ember.js, 1 year
Budapest, Hungary
Preferred Environment
Vim, iTerm
The most amazing... contribution I've made lately is adding a version of a link-to helper in Ember.js.
  • Owner
    2014 - PRESENT
    FullStack Consulting
    • Build an ambitious web app with Ember.js that I can't say anything about yet :).
    Technologies: Ember.js, Rails
  • Rails & Ember.js Developer
    2013 - 2014
    • Helped develop a couple of Ember.js apps for insurance companies.
    • Held an Ember.js "Up & Running" workshop at Eurucamp, Berlin for ~25 people.
    • Held a 1-day, intensive Ember.js training session for 3 developers.
    • Created a 7-piece screencast series called "Build an Ember.js app".
    • Started an email list and expanded it from 0 to 400 subscribers in 5 months. Created and sent out content every Wednesday.
    Technologies: Rails, Ember.js
  • Web Developer
    2010 - 2013
    Secret Sauce Partners, Inc.
    • Created Fit Predictor, an app to find a shopper's best fit in seconds using data mining techniques on data that retailers already have, without the need for physical measurements. Launched in 8 global markets including the US. Proved the technology using A/B testing to increase conversion and reduce returns. Implemented Fit Predictor to be omni-channel, supporting 1400+ brands and over 1 million shoppers.
    Technologies: Ruby on Rails
  • Rails Developer
    2008 - 2010
    • Created a site built on fetching and processing financial data on the back-end as a periodic job and displaying it to the user on a nice UI (
    • Created a small addendum handling ticket management (
    Technologies: Ruby, Rails, JavaScript
  • Web Developer
    2004 - 2008
    • Worked on several projects, including, the US market-leading blog advertising software. Developed new features and handled day-to-day maintenance.
    • Tutored a Python course for fellow developers.
    • Implemented an algorithm to find the earliest time slot for a specific ad on a specific blog.
    Technologies: Python
  • Lotus Notes Developer
    2004 - 2004
    Hungarian State Treasury
    • Built a Lotus Notes application from scratch for a government program supporting NGOs.
    Technologies: Lotus Notes
  • Java Desktop Application Developer
    2003 - 2003
    Hotel d'Entitats Tarragona
    • Built a Java app for a political campaign capable of being run from a CD.
    Technologies: Java
  • Web Developer
    2001 - 2002
    Allied-Visions GmbH
    • Developed and maintained Logitech's e-shop and several other online shops as part of a small team.
    Technologies: Java, Lotus Notes
  • C++ Developer
    1999 - 2000
    • Started at Ericsson as an intern and was promoted to a Part Time Developer position.
    • Developed protocol simulators.
    Technologies: C++
  • BlogAds ( backend (Development)

    I was one of the main developers working on the back-end of Blogads, a very savvy US blog advertising platform. Starting as a (very) junior Python developer, I became experienced enough to hold training sessions for fellow developers after 2.5 years.

  • Web developer for Fit Predictor ( (Development)

    As one of the key employees of a Silicon Valley startup, I was one of the four developers who got the product off the ground. Technologies used include Ruby (Rails), Node.js, CoffeeScript, and a bit of Backbone.

  • Web shop development for Logitech (Development)

    As part of a small company, we built the eCommerce site for Logitech and a couple of related, smaller sites.

  • Freelancer Rails developer (Development)

    Worked with several clients to make their business ideas into reality (,, etc.).

  • Ember.js developer, trainer & consultant (Development)

    Intrigued by front-end development, I fell in love with Ember.js and went from zero knowledge to being an expert of the framework in 6 months. I held several workshops and gave presentations at various conferences.

  • Curator of an Ember.js newsletter (Development)

    I loved Ember so much that I launched a mailing list. I created a screencast series that goes through the building of an Ember application step-by-step. I now send an article or best practice tip each week to my mailing list, which grew from 0 to 400 members in the span of 5 months.

  • The 8 Most Common Mistakes that Ember.js Developers Make (Publication)
    Ember.js is a comprehensive framework for building complex client-side applications. But, as with any advanced framework, there are still pitfalls Ember developers may fall into. With the following post, I hope to provide a map to evade these. Let's jump right in!!
  • JavaScript Promises: A Tutorial with Examples (Publication)
    Promises are a hot topic in JavaScript, and you should definitely get acquainted with them. They are not easy to wrap your head around, it can take a few articles, and a decent amount of practice to comprehend them. Aim of this article is to help you understand Promises, and nudge you to get more practice using them.
  • A Guide to Building Your First Ember.js App (Publication)
    As modern web applications do more and more on the client-side (the fact itself that we now refer to them as “web applications” as opposed to “web sites” is quite telling), there has been rising interest in client-side frameworks. There are a lot of players in this field but for applications with lots of functionality and many moving parts, two of them stand out in particular: Angular.js and Ember.js. Angular.js has already been introduced on this blog, so we're going to focus on Ember.js in this post, in which we'll build a simple Ember application to catalog your music collection. You'll be introduced to the framework's main building blocks and get a glimpse into its design principles.
  • Languages
    Ruby, JavaScript, CoffeeScript, Python, Clojure
  • Frameworks
    Ruby on Rails (RoR), Ember.js
  • Libraries/APIs
    Devise, GitHub API, Twitter API
  • Tools
    Vim Text Editor
  • Paradigms
    Agile Software Development, Object-oriented Programming (OOP), Functional Programming
  • Storage
    PostgreSQL, MySQL, SQLite, MongoDB, Redis, ZODB
  • Platforms
    Mac OS
  • Master's degree in Computer Science
    1996 - 2001
    Budapest University of Technology - Budapest, Hungary
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