CAST a Software Company based in Meudon is the market leader in Software Intelligence.
Working at CAST R&D means being an important part of a highly-talented fast-paced multicultural and Agile team .
Overview
Were building the foundation to ground AI with AAA Software Intelligence Aggregated
Accurated and Augmented sourced from real-world software and technology projects. This
role goes beyond manual curation: its about using AI to empower AI. You will leverage LLMs
embeddings and NLP tools to clean enrich and validate data enabling AI systems and
autonomous agents to rely on it for training and contextual understanding.
Responsibilities
Aggregate and structure data from software ecosystems (codebases APIs tickets
documentation architecture specs).
Apply LLMs embeddings and NLP tools to automate: data cleaning entity extraction
metadata tagging and semantic annotation.
Build and maintain semantic pipelines for LLM fine-tuning and RAG (Retrieval-Augmented
Generation).
Organize datasets into formats suitable for Agent-to-Agent (A2A) interactions: APIs vector
DBs knowledge graphs etc.
Collaborate with AI teams to evolve schemas prompts labeling strategies and evaluation
data.
Ensure strong data lineage reproducibility and version control.
Requirements
3 years in data engineering ML data ops or structured data curation.
Proficient in Python with strong data pipeline skills (Pandas PyArrow regex Airflow).
Experience with LLMs or NLP tools (e.g. Hugging Face spaCy LangChain).
Ability to use AI to clean enrich classify and organize technical content.
Strong understanding of tokenization chunking and model input preparation.
Experience working with software project data: Git repos APIs technical documentation etc.
Bonus Skills
Knowledge of vector DBs (FAISS Qdrant Weaviate) or knowledge graphs (Neo4j RDF
SPARQL).
Instant insight into your applications. Whenever you need to know, improve, transform, control.