Case Studies for my Software Projects

Featured projects I'm working on. Read how I develop SaaS applications, websites & automation for clients with my approach and results.

TheorieGO

TheorieGO

Web application development

TheorieGO is an online platform that helps customers prepare for their Dutch car theory exam.

I was involved in the technical aspects, such as designing the architecture and developing the entire (technical) system.

Case study
TheorieGO

Applied techniques 

Spring Framework
Next.js
Java
Typescript
Tailwind CSS
React
Cucumber.js
JUnit
PostgreSQL
Gradle
ES6 (Javascript)
NPM
Ubuntu
Caddy 2
PM2
Mollie
Google Cloud
Factuursturen.nl
Brevo
Events Access App

Events Access App

Web application development

This platform allows administrators to share QR codes for existing gate systems with customers via a private dashboard environment.

For this project, I am responsible for all technical aspects of the platform — writing code, testing, and further development.

Case study
Events Access App

Applied techniques 

Kotlin
React
Spring Framework
Typescript
Tailwind CSS
PostgreSQL
Gradle
JUnit
ES6 (Javascript)
NPM
Ubuntu
Caddy 2
Webshop Product Analysis

Webshop Product Analysis

Web scraper development

With this web scraper (ethical, with permission) I enable the client to automatically collect product data from various webshops for data analysis.

For this I developed the scraper, set up servers and do maintenance.

Case study
Webshop Product Analysis

Applied techniques 

Python
Ubuntu
Caddy 2
Serpotrack

Serpotrack

Web application development

Serpotrack is a tool for online marketers & SEO professionals to monitor website positions in Google search results (SERP).

As the initiator of this project, I initially developed it for myself. This project is continuously being developed.

Case study
Serpotrack

Applied techniques 

Java
Typescript
Spring Framework
Next.js
React
Tailwind CSS
PostgreSQL
Maven
JUnit
Cucumber.js
ES6 (Javascript)
NPM
Ubuntu
Caddy 2
PM2
AuthSMTP
Mollie
Hardwaresleutel.nl

Hardwaresleutel.nl

Webshop development

Hardwaresleutel.nl is a webshop and informative platform for hardware authentication keys. These are physical devices that you can use as a 2FA step to secure your online accounts.

I am responsible for the full development, marketing (partially), and webshop operations.

Case study
Hardwaresleutel.nl

Applied techniques 

Java
Scala
Play Framework
PostgreSQL
ES6 (Javascript)
CSS
HTML
jQuery
SBT
JUnit
Cucumber.js
Jenkins
Ubuntu
Apache HTTP Server
Monitorix
Mollie
PostNL

Need an experienced software engineer?

I help companies with software solutions (SaaS, automation and more) — from backend to frontend. Feel free to contact me to see how I can contribute to your project.

  • Robust backend: Java/Kotlin, SQL, Spring Framework
  • User-friendly front-end: Next.js, React, Typescript, ES6
  • Rapid development: Continuous integration & deployment, Jenkins
  • Efficient collaboration: Agile, Scrum, Jira, Git, Bitbucket, GitHub
  • Freelance software developer from Arnhem, The Netherlands