Antoni van Leeuwenhoek Professor of Computer Science at TU Delft



We're Hiring

The SLDE group has several open positions:

If you would be interested in working with me, you can also get in touch directly by email (but read this first).


Full contact information


I lead the Software Language Design and Engineering research program. Our mission is to enable software engineers to effectively design, implement, and apply domain-specific languages. We are doing research in three tracks:

  • Language engineering: investigate the automatic derivation of efficient, scalable, incremental compilers and usable IDEs from high-level, declarative language definitions

  • Semantics engineering: investigate the automatic verification of the consistency of language definitions in order to check properties such as type soundness and semantics preservation

  • Language design: investigate the systematic design of domain-specific software languages with an optimal tradeoff between expressivity, completeness, portability, coverage, and maintainability.

Research overview



Project overview

Recommended Publications


Dynamic semantics

Integrated development environments

Transformation and analysis

Syntax definition and parsing

Language composition

Abstractions for web programming

More publications

Current Activities

All my professional activities | Presentations


MetaBorg provides generic technology for allowing a host language (collective) to incorporate and assimilate external domains (cultures) in order to strengthen itself. The ease of implementing embeddings makes resistance futile.

From Concrete syntax for objects