Barneveld, Netherlands
Erik Mostert
Senior Software Developer
Dedicated and determined Senior Software Developer with over 15 years of experience in IT, specializing in third-party integrations, modernizing legacy codebases and addressing technical debt. Equally comfortable stabilizing and maintaining older .NET Framework systems and building modern .NET applications. A pragmatic engineer with a strong bias toward writing maintainable software. Based in the Netherlands on a Highly Skilled Migrant visa (valid to 2028); immediately available.
Featured projects
View all →API Architecture Demo: Bad Design vs. Good Design
Two companion .NET APIs against the same e-commerce schema — one built the way a junior developer might build it, one built with senior-level practices — compared under identical k6 load.
Resilience Demo: Naive vs. Resilient Integration
A plain HttpClient call vs. a Polly v8 resilience pipeline, both hitting the same intentionally-flaky fake third-party dependency through a scripted outage.
DocQuery: An AI processing pipeline for documents, with RAG and vector search
A .NET solution that takes a PDF from upload through chunking and embedding to a cited, grounded answer. It is built to exercise AI-200 concepts in a real system rather than in isolated tutorials.