Selection from my portfolio
Colruyt Group - WijnWijzer
Colruyt Group is an owner and operator of several large supermarket chains. Shoppers can use WijnWijzer: a tablet station located in wine departments to help them easily select the best wine for the occasion. With the app already developed and operational, the company had one complaint: the existing backend API (written in PHP symfony framework) was not fast enough.
It is at that point I have been contracted. I was able to use my in depth knlowedge of database design, PHP/symfony, and code profiling to pinpoint and optimize the problem areas. The end result was the API that became between 10,2 and 29,3 times faster (depending on the use case). With those numbers, the already planned investments in extra hardware capability could be cancelled - they were no longer nececessary.
Coca-Cola - Paydrink
Coca-Cola uses their Paydrink application to add mobile payments capability to existing vending machines. Originally developed to be used within one single country, soon after other divisions started showing interest in it as well.
I have been contracted to make the existing solution scalable and configurable for multiple European markets using the concept of multitenancy. By leveraging sound programming concepts and the functionality of symfony framework I was able to make the application ready for European rollout efficiently and whilst keeping each country's data separate and independent.
Comandi Management Dashboards
Comandi is a dashboarding application, developed be me from scratch into a fully featured SaaS application for a client. Many third-party systems can be connected to automatically fetch data and present it in various graphical interfaces for analysis.
Nowdays it is sold as a service used by more than 35.000 users, and executing 200+ million API calls every day.Read more about this project
DIT IS WIJS - Metis
A company-wide custom backoffice application for DIT IS WIJS used by almost 100 employees in various departments and business divisions. I have developed a modernized version of the legacy application and also maintained the old code base.
The functionality I added includes Twinfield integration for automatic invoicing, new modules for managing job postings and job applications, API for the company website, and many more.Read more about this project
Activo event management
Activo is a company specialized in hosting/managing both online as well as offline events.
I have worked with Activo to improve their online event platform. My work includes extending support for websocket technology within the platform, creation of ad-hoc participant matching module (network carousel, breakout sessions), as well as adding integration with YouTube API to automatically create and setup broadcasts for event workshops.
Housing anywhere is a marketplace for people who are interested in temporary accomodation (for example exchange students).
The initial pilot took place at Erasmus University Rotterdam. During that stage the client contacted me to develop an application where visitors could list their properties. It could then integrate with Google Maps, geocode the properties, and show them on a map to all other users (based on their preferences).
The client has asked me to develop a web application in which a building inspection could be entered real time and on location using a tablet.
The results of an inspection could then be used to generate reports automatically and on demand, including a multi-year maintenance plan and cost overview. These reports were the end product of the application and were made available to building owners.
Vakantie naar de zon
A travel aggregator and affiliate website I developed for my client. I have developed the full project including a custom website as well as an admin panel.
The client could connect and import multiple external travel agency feeds in the admin panel. All relevant information (such as price, country, region, city, provider) was parsed and saved in a database. The website visitors were able to browse through the selection by using filters, country specific pages, and highlighted deals.
SVET Online courses
SVET is a language school offering both traditional as well as online language courses.
For SVET I have been involved in migrating and configuring existing web based solutions to create a portal for digital products such as webinars and online language lessons based on a subscription model.