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desalasworks presents:

a selection of works by steven de salas

AutoTrader UK

This was a role working on Interface Development for Trader Media’s online marketplace with over 1 billion page impressions per month.

autotrader_main

I mainly focused on creating rich interfaces and user journeys with Event-driven and Object-Oriented JavaScript, DOM, HTML5, jQuery, AJAX, JSON and Backbone.js MVC framework continuously tested with Jasmine/Rhino.

autotrader_gallery

Our team used Agile development approach with Continuous Integration (CI), pair-programming and short development cycles based on Thoughtworks Extreme Programming (XP) model for Java/JUnit TDD projects.

autotrader_agile_dave

Value Trader

Value Trader is a tool that calculates stock prices based on value fundamentals from Balance Sheet and Profit and Loss statements. Feel free to use it to determine the financial health and estimated value of your stocks.

Live Address

http://www.valuetrader.net

The Landing Page

The landing page provides concise information on a few selected companies based on a “Watchlist”. These are chosen by investors so that they feature every time they come and visit.

Company Details Page

When drilling down into an individual company. The system provides information by looking at financial data over the past few years to determine general health of the company, as well as provide recommendations based on price (by comparing it to the book value and earnings of the company).

Designed for iPhone

The design has been further enhanced to look good on mobile devices, using a mix of small and large type so the important information is clearly displayed even on a small screen.

IP Based Security

The website makes use of IP addresses to authenticate users. The following advantages:

  • Only need to authenticate once (per location).
  • User locations are traced by a collection of IP addresses associated to an email.
  • There are measures in place to detect SQL Injection, Denial of Service and Dictionary Attacks. If a single location tries to hack the site all associated IP addresses are automatically denied access.

Pepsi Project Refresh

A global-reach social media campaign for renown household brand. This project involved designing an interface for a competition mechanics application with some of the latest technologies such as RESTful AJAX, jQuery, jQT, Qunit, HTML5, GitHub, Ruby on Rails all delivered over Amazon’s E2 Cloud delivery network.

The Pepsi Project Refresh

Pepsi Project Refresh – Global Competition Campaign

The Pepsi Refresh Project is an international social-media campaign aimed principally at teenagers and young adults, Pepsi’s main consumer base.

The project involved working with other skilled interface developers to customize the GUI and enhance an existing competition-mechanics platform (supplied by Global Dawn, a London-based specialist software developer) to provide Pepsi with the ability to create and judge competition rounds using bespoke rules, giving users have the ability to upload content and rate other user’s content all using Pepsi’s familiar blue branding.

Rich User Interface Technology

The principal technology stack of the project was RESTful AJAX over Ruby on Rails, this meant a highly-responsive UI that required minimal refreshing of the browser’s window. The main frameworks used for this were jQuery and QUnit(for unit testing).

Compatibility requirements meant unit-testing across various browser platforms.

A distributed team across several geographical areas meant using a robust and well-known Source Control and Bug-tracking platforms, GitHub, the platform of choice for many open-source projects was used for this purpose. Jira, another excellent solution provided by Atlassian, was used mostly for bug-tracking and task management.

Amazon Cloud

Various Technologies used for the Project

In order to improve high-volume delivery across all international location, the project used Amazons EC2 CloudDelivery Network.

Global Release

At then end of the project, the platform was localised and released across various international site. Russia and Italy being the first two participants in the competition.

Russian Site: platform was localised and delivered across various International Sites.

User-Generated Content

The key to the low-maintenance requirements of the competition is that users generate their own content. They upload videos and images, and they get to vote on videos and images provided by other users. According to Global Dawn’s 1-9-90 competition technology, some users tend to provide the majority of traffic and content in a site, hence these users are rewarded with ‘points’ to spend across the site as they see fit.

Italian Site: Users upload their own content and vote on other people’s content.

Competition mechanics are designed by brand managers (Pepsi in this case), they choose different parameters such as the duration of the competition, number of stages etc.