Web application · Personal project · 2026
Game Night Planner
A Laravel application for organising game nights: plan sessions, track who is coming, suggest and vote on games, and pick what to play.
PHPLaravelBlade
Computer Science Student & Backend Developer
Kaylan de Groot
I build reliable backends, API integrations, and web applications.
Based inRotterdam, the Netherlands
StudyingRotterdam University of Applied Sciences
Latest roleBackend Developer Intern, Notive
Projects
Selected work
Backend workflows, API integrations, domain logic and a data-science study. Each project links to its source code.
Console application · School project · 2024
Airline Reservation System
A C# console application for booking flights, with separate customer and admin flows and a layered structure for presentation, logic and data access.
C#.NETConsole Application
Prototype · School project · 2025
Verstegen HR Chatbot
A Next.js and TypeScript chatbot prototype that sends questions to a language model through server-side API routes and can play the answer back as speech.
Next.jsTypeScriptAPI Integration
Research project · Research capstone · 2026
Type 2 Diabetes Prediction & Feature Importance
An educational machine-learning study on NHANES data that compares four prediction models and tests how consistent feature-importance conclusions are across models and explanation methods.
PythonJupyterscikit-learnXGBoostSHAP
Experience
Work experience
Sep 2025 – Feb 2026
Backend Developer Intern · Notive
Contributed to Biker Outfit's inventory and order management platform, which automates processes across its retail and online operations. I developed a notification system, added API integrations, wrote unit tests and fixed bugs, and helped integrate a Next.js frontend with the existing Django backend.
DjangoNext.jsInternship grade 9.3 / 10Dec 2022 – May 2023
Web Developer Intern · ROX Digital Agency
Worked on web projects using Laravel, Tailwind CSS and Next.js.
LaravelTailwind CSSNext.jsAug 2022 – Dec 2022
Full-stack Developer Intern · CruiseReizen.nl
Worked on frontend improvements, API integrations and database access with Eloquent.
PHPEloquent
About
Background & skills
I'm a Computer Science student at Rotterdam University of Applied Sciences, based in Rotterdam. Before that I completed the MBO level 4 Software Developer programme, which is where I started building web applications.
Across three internships I have worked on API endpoints, notifications, integrations with external services, database access and unit tests. I'm most interested in the backend side: modelling data well, keeping business logic testable, and making systems behave predictably.
Education
BSc Computer Science
Rotterdam University of Applied Sciences
2023 – present
Software Developer, MBO level 4
2020 – 2023
Skills
Backend
- Python
- Django
- PHP
- Laravel
- C#
- .NET
- MySQL
- REST APIs
Frontend
- React
- Next.js
- TypeScript
- Tailwind CSS
Engineering practices
- Object-oriented programming
- Unit testing
- Agile / Scrum
Contact
Get in touch
Questions about my projects, an internship or a backend role? Email is the quickest way to reach me.
degrootkaylan@gmail.com