Teaching Exotic Programming Languages to Large Language Models by Alessandro Giagnorio @DevoxxForever
Teaching Exotic Programming Languages to Large Language Models by Alessandro Giagnorio  @DevoxxForever
Uploaded February 2026 | Updated September 2026, 2 weeks ago
Imagine asking a computer to build an entire app from scratch and it does, instantly, just by understanding your words. That is not science fiction anymore. Large Language Models (LLMs) are reshaping how we write software, aiding developers and even non-developers alike in crafting code with unprecedented ease.

But there is a catch. These models are fluent in the world's most popular programming languages, like Python or Java, and struggle when they face the dialects of industry: the in-house programming languages companies build for their own unique problems. LLMs often have little to no training knowledge of these languages, which makes it difficult for them to assist in these specialized domains. For this reason, in-house programming languages are perceived as exotic by LLMs.

In this talk, I will share my experience in teaching new and exotic programming languages to LLMs.
I will show the challenges we faced during the process and how current techniques like retrieval-augmented generation, few-shot learning, and fine-tuning open-weight models performed in this context. Finally, I will share the "secret recipe" we used to successfully teach these languages to LLMs, enabling them to assist in coding tasks that were previously out of reach.
Teaching Exotic Programming Languages to Large Language Models by Alessandro GiagnorioLevel Up Your LangChain4j Apps for Production by Lize RaesRamaLama: Making working with AI Models Boring by Cedric ClyburnDatabase Connection Pool Sizing - Demystified! by Jasmin FluriDefense against the dark arts of AI: The playbook for a sovereign model-as-a-service platform[VDBUH2026] Magda Miu & Alin Miu - Engineering Leadership in the Age of AIThe Past, Present and Future of Programming Languages by Kevlin Henney - Voxxed Days CERN 26Running Your Coding Agent Locally: Lessons from a Real-World Experiment by S. Maestri and A. SoldanoWelcome to Voxxed Days Amsterdam 2026 - Opening (room 2)Pipeline Patterns and Antipatterns - Things your Pipeline Should (Not) Do by  Daniele Raniz RanelandHack Your Brain: Smarter Learning for Devs by Simone de Gijt[VDBUH2026] Abdel Sghiouar - Optimizing LLM Inference for the Rest of Us
Devoxx |

Teaching Exotic Programming Languages to Large Language Models by Alessandro Giagnorio

SHARE TO X SHARE TO REDDIT SHARE TO FACEBOOK WALLPAPER