AI Engineer Trainee at Altilia AI

Trainee in R&D team focusing on fine-tuning domain-specific large language models for financial and banking data; improved retrieval precision by ~30%; developed hybrid retriever and reranker models; implemented negative mining and hard triplet sampling to optimize embedding discriminability; built Python libraries for data preprocessing, training utilities, and evaluation pipelines; contributed to research-driven development aligning contrastive learning, prefix tuning, and RAG techniques with real-world use cases.