10 min read
Screen reader testing in 20 minutes
Most developers have never used a screen reader on their own site. Twenty minutes of actual use finds more accessibility issues than most automated audits. Here is the practical version, in detail.
Recent writing
Short essays on digital accessibility.
- 3 min read
prefers-reduced-motion: what it doesn't solve
Adding the media query is necessary and not sufficient. Here's what it covers, what it doesn't, and what you still have to design around.
- 3 min read
The overlay industry is selling compliance as a product
A line of JavaScript on your site promises to make it accessible. It doesn't. It sells your legal exposure down for a fee, and leaves actual disabled users worse off than before.
- 4 min read
AI alt text: what it still can't do
Every time a new multimodal model ships, someone claims alt text is solved. It isn't, and the reason is structural, not a matter of model quality.
How I think about software
I'm 29, a full-stack engineer with a mathematics degree, working between Germany and the Netherlands. Math taught me to see patterns, think in systems, and break complex problems into clean, logical steps — that's still how I approach every line of code.
I also specialize in web accessibility (EN 301 549). My brain latches onto edge cases — I see the ways things break before I see the happy path. If a site doesn't work with a screen reader, it's broken. Period. I dive deep into these problems until they're actually solved, not just "fixed." Half-complete solutions bother me in a way that's hard to explain.
My Expertise
01 / 03
Mathematics
Strong foundation in mathematical modeling, optimization algorithms, and statistical analysis. Applying theoretical concepts to solve real-world challenges.
- Focus
- Modeling & optimization
- Applied to
- ML, data science
02 / 03
Full-Stack Engineering
End-to-end application engineering from database design to responsive frontends. Modern tech stack with React, Next.js, TypeScript, Node.js, and PostgreSQL.
- Stack
- React, Next, Node
- Focus
- TypeScript, SQL
03 / 03
Web Accessibility
Expert in EN 301 549 standard. Building inclusive digital experiences that work for everyone, including assistive technology users.
- Standard
- EN 301 549
- Target
- WCAG 2.2 AA
My Skills
- Python
- R
- PyTorch
- TensorFlow
- scikit-learn
- Keras
- OpenCV
- Pandas
- NumPy
- Plotly
- Jupyter
- React
- Next.js
- Gatsby
- TypeScript
- JavaScript
- Tailwind CSS
- Node.js
- FastAPI
- GraphQL
- Docker
- Kubernetes
- PostgreSQL
- MySQL
- MongoDB
- Supabase
- Firebase
- Git
- GitHub
- Storybook
Projects & Activities
- Period: 2024 – Present
DeepSpectrum Lab
A community of neurodivergent developers (autism, ADHD) building software that helps neurodivergent children train socio-emotional skills.
- Machine Learning
- React
- Next.js
- Python
- Accessibility
- Period: 2025 – Present
Mathematics Teacher (Pro Bono)
Voluntary mathematics teaching at VU Amsterdam. Helping students build intuition for abstract concepts and bridge the gap between theory and application.
- Mathematics
- Teaching
- University
- Pro Bono
- Period: 2025 – Present
Accessibility Inspector (Stealth Mode)
Automated a11y testing across modern frontend frameworks — React, Next.js, Gatsby, Vue, and Svelte. Auditing component libraries for EN 301 549 compliance, catching accessibility issues before they ship.
- Accessibility
- React
- Next.js
- Vue
- Svelte
- Testing
- Period: 2019 – 2024
FrOSCon Volunteer & Speaker
Volunteer and speaker at the Free and Open Source Software Conference (FrOSCon) at Hochschule Bonn-Rhein-Sieg — one of Germany's largest open-source community events.
- Open Source
- Community
- Conference
- Speaking
- Period: 2019 – 2021
Programming Tutor
Tutoring computer science students at Hochschule Bonn-Rhein-Sieg. Covering programming fundamentals, data structures, and algorithms.
- Teaching
- Computer Science
- University
- Java
Let's work together
Whether it's accessible frontend work, a mathematically tricky problem, or an idea that should work for everyone — feel free to reach out.
Send an email