Thijs
Stekelenburg.

Practical thinking.
Careful development.

Software developer focused on backend systems, API development, Flutter applications and data integrations. I study Software Development and independently build software products that turn complex data into useful solutions.

Work & independent projects.

1. 2024 – Present

   Independent Software Developer

   Stekelcode

   Developing independent software architectures, including Wealth Hub (a financial portfolio app) and Bitvavo Listing Radar (crypto market monitoring). Working with FastAPI, Flutter, PostgreSQL, SQLite, Docker and push notifications.

2. 2025 – Present

   Founder & Developer

   Zimplix

   Developing a website management platform with a static-first approach. Experience with structured JSON content, static compilers and product development.

A foundation to build on.

1. 2024 – 2027

   Software Development (MBO 4)

   mboRijnland, Leiden

   I would have completed my Software Development programme within two years. Due to demonstrable errors in the examination procedure and its handling by mboRijnland, my final exam was not completed correctly and my graduation has been delayed.

2. 2023 – 2024

   Engineering Technician

   mboRijnland, Gouda

   The Engineering Technician programme included practical subjects as well as programming. I developed the app for our projects, which led me to switch to Software Development.

3. 2019 – 2023

   VMBO-T

   Yuverta, Alphen aan den Rijn

   Secondary school diploma obtained.

In practice.

What I work with.