Tools & technologies
Natural language processing
Classification, extraction, summarisation and semantic search over text, with transformers and embeddings, from fine-tuning to serving.
Classification, extraction, summarisation and semantic search over text, with transformers and embeddings, from fine-tuning to serving.
From text to a decision
Summarising long documents with chunking, classifying tickets, extracting structured fields or searching by meaning instead of by keyword. Text turned into something actionable.
Understanding the internals
I work with models at a low level when needed: I have implemented a transformer from scratch, attention and tokenizer included, so I know what is happening and where to tune.
Operating locations
Studio in Madrid
Based in Madrid, working remotely with brands, studios and agencies inside and outside Spain.
Info graphic
Decision flow
Transformers and embeddings.
Info graphic
Friction map
Search by meaning.
Info graphic
Journey shape
I know the internals.
Work with JMWEB
Let's build something that reaches production.
It all starts with a conversation. Bring a dataset, a goal or a model that is stuck; I will take care of the rest.
Start a project
Next projects:
MLOPSFASTAPIDOCKERMONITORING
Credit Risk Platform
End-to-end MLOps platform for credit-default scoring: reproducible training with a versioned model registry, a FastAPI inference API with input validation, PSI drift monitoring and a Prometheus and Grafana observability stack, all containerised with CI. Code at github.com/delcenjo/credit-risk-platform.
View project
PYTORCHTRANSFORMERSNLP
Transformer from scratch
A GPT-style language model implemented from scratch in PyTorch: multi-head attention, causal masking and residual blocks written by hand, plus a byte-pair tokenizer and an ablation study. Code at github.com/delcenjo/transformer-from-scratch.
View project
SCIKIT-LEARNCALIBRATIONTABULAR
Credit Risk Model
Credit-default risk model with rigorous evaluation: a leakage-free pipeline, cross-validated model comparison, calibrated probabilities, a cost-based decision threshold and per-segment error analysis. Code at github.com/delcenjo/credit-risk.
View project
RAGLLMFASTAPIDOCKER
AI Insight Assistant
An assistant that combines RAG and a SQL agent over your data: it retrieves from a document corpus and queries a database, served with FastAPI and Streamlit and packaged in Docker. Code at github.com/delcenjo/ai-insight-assistant.
View project