LLM Engineer · Île-de-France

ML/LLM Engineer

I take AI programs from exploratory POCs to audited production infrastructure—pairing experimentation with governance so analysts, technicians, and legal teams trust every output.

Text-to-SQL copilots for finance leadership
LLM diagnostics on live vehicle telemetry
Fraud analytics for national rail networks
LLM enablement inside regulated teams

Focus Areas

Each partnership blends data science, LLM integration, and MLOps craftsmanship. I help teams move from proof of concept to trusted production systems with responsible AI practices embedded throughout.

Production-grade MLOps illustration

Production-grade MLOps

Designing repeatable pipelines with observability, automated evaluations, and compliance built in from day zero.

LLM Integration illustration

LLM Integration

Embedding retrieval-augmented generation, semantic parsers, and copilots that accelerate expert workflows without sacrificing trust.

Predictive Analytics illustration

Predictive Analytics

Translating telemetry, financial, and operational data into models that unlock measurable cost savings and efficiency gains.

Skills & Technologies

An interactive network showing my core competencies and how they interconnect to deliver end-to-end ML solutions.

core
framework
tool
domain
Hover to explore • Drag to rearrange

Experience

Collaborating with lean innovation teams and enterprise stakeholders alike, I deliver AI programs that balance experimentation with operational excellence.

Showing 8 engagements

IA/LLM Engineer

Stellantis Financial Services (Reply)

Mar 2025 — Sep 2025

Architected a production text-to-SQL assistant empowering 40+ financial analysts to interrogate complex datasets without SQL expertise.

  • Semantic parsing and query optimisation lifted accuracy to 85.6% with automated fallback logic.
  • Decision-making cycles shrank by 27% through faster insights and guardrailed analytics.
  • Delivered compliant AWS pipelines spanning Lambda, Bedrock, and OpenSearch with production monitoring.
FinancePythonAWS LambdaLangChainOpenSearchFine-tuned LLMsAWS Bedrock

Machine Learning Engineer

Stellantis (Reply)

Feb 2025 — Jun 2025

Brought LLM reasoning to vehicle telemetry, diagnosing anomalies for connected cars within the R&D division.

  • LLM-powered diagnostics translated sensor streams into natural-language repair guidance with 72.8% detection accuracy.
  • Knowledge-retrieval pipelines mapped anomalies to procedures, cutting misdiagnosis 14.2% and saving €1.1M annually.
  • Root-cause analytics reduced technician investigation time by 24.5% across pilot fleets.
MobilityPythonAWS SageMakerAWS BedrockVector DatabasesRAGAWS CDK

Machine Learning Engineer

SNCF (Talan)

Sep 2024 — Dec 2024

Partnered with the TER division to curb multimillion-euro ticket fraud through predictive controls.

  • Fraud rate dropped from 7.2% to 5.9% via targeted interventions powered by hypothesis testing.
  • Advanced models (RF, XGBoost, LSTM) achieved AUC-ROC above 0.87 for risk scoring.
  • Regression forecasts with 14.7% RMSE improved inspector deployment across the rail network.
MobilityRandom ForestXGBoostLSTMPython

Machine Learning Engineer

GRT Gaz (Talan)

Jun 2023 — Aug 2024

Advanced operational safety initiatives for France's gas transport network within a 6-person innovation program.

  • Forecasting pipelines improved incident anticipation through bespoke gas propagation models.
  • Confluence-integrated LLM assistant shortened support response times by 38.5%.
  • Established TDD-driven monitoring and retraining practices for ML systems in production.
EnergyPythonAWS SageMakerAWS BedrockAWS LambdaOpenSearch

Machine Learning Engineer

LexisNexis (Devoteam)

Sep 2022 — Jun 2023

Scaled ML products for thousands of legal professionals within a dedicated MLOps squad.

  • Implemented ML platforms with GitLab CI/CD, ZenML, and MLflow reducing deployment cycles by ~41%.
  • Refactored codebases to eliminate tech debt and improve maintainability of legal analytics tooling.
  • Managed cloud infrastructure with Terraform and SageMaker for reliable releases.
LegalTechPythonAWSTerraformGitLabZenMLDVCMLflow

Data Engineer

Generali (CGI)

Jul 2021 — Jul 2022

Strengthened fraud prevention and AML/CTF compliance inside the Risk & Compliance department.

  • Implemented AML/CTF detection pipelines that reduced manual workload by 24%.
  • Engineered PySpark/Hadoop workflows to elevate data quality across millions of transactions.
  • Leveraged Neo4j graph analytics to surface fraud networks and suspicious patterns.
InsurancePythonPySparkHadoopNeo4jCypherQL

Data Scientist

BPI France · AG2R La Mondiale (CGI)

Mar 2021 — Jun 2021

Automated document analysis for innovation labs by combining OCR and NLP workflows.

  • Reduced manual processing time by 34% with ML/DL models tuned for printed and handwritten text.
  • Improved F1-score by 11.8% through rigorous hyperparameter tuning.
  • Boosted classification and deduplication with targeted text similarity analysis.
FinancePythonTensorFlowOCRNLP

Data Scientist

DGFiP (CGI)

Oct 2018 — Jun 2019

Supported modernization of citizen-facing digital services with NLP automation.

  • Built NLP models for classification, topic modelling, and chatbots serving public administration teams.
  • Automated information extraction pipelines improving processing efficiency.
  • Developed Python web apps and scraping pipelines for rapid data collection.
Public SectorPythonFlaskNLPAutomation

Articles & Writing

I document the playbooks behind real-world AI deliveries—capturing what it takes to operationalise LLMs, orchestrate predictive systems, and align stakeholders around responsible adoption.

View All Articles →

Recommendations

Testimonials from colleagues, managers, and clients who have worked with me on AI/ML projects across various industries.

AA

Amine AIT EL HARRAJ

Driving Cloud & AI Innovation

Ex-AWS | SaaS Co-Founder

Managed Jaafar directlyJuly 28, 2025
I had the pleasure of working with Jaafar on two key AI projects at Stellantis Financial Services: text-to-SQL automation and IoT anomaly detection using LLMs. He consistently brought deep technical expertise, especially in NLP and large language models, paired with a strong understanding of business needs. Jaafar stands out for his ability to simplify complex ideas, build scalable solutions, and collaborate effectively across teams. I highly recommend him for any AI/ML or data science role—he's a rare blend of technical depth and practical insight.
NH

Nicolas Hartmann

Solution Architect

Stellantis

Managed Jaafar directlyJuly 15, 2025
I had the pleasure of working with Jaafar on an interactive POC exploring a RAG-based architecture for SQL generation from natural language (TXT2SQL). Jaafar demonstrated great autonomy, strong technical insight, and quickly adapted to the complex and highly technical banking environment. His communication skills, the quality of the testing, results, and documentation were all highly appreciated. A valuable contributor I would gladly recommend.
HJ

Hamza Jalouaja

Machine Learning Engineer

Large Language Model Operations | AI Architect

Senior colleague at GRTgazDecember 23, 2024
I had the opportunity to work with Jaafar at GRTgaz, where he contributed to several projects. Jaafar is a serious and involved person, with a real will to learn and progress. He integrates well into a team and has shown that he can be an asset in a well-structured and organized environment.
DC

David Cabellan

Expert Big Data / Lead Tech

SNCF Client

Client on fraud detection projectDecember 2, 2024
I worked with Mr. BENABDERRAZAK on a POC for fraud prediction at TER for all trains. He was proactive, persevering, driving in choosing external sources, and very professional. He provided us with very methodical documentation describing his hypotheses and choices, as well as numerous explanatory diagrams. We discussed various algorithms, errors, sources, methods, and I appreciated challenging each other to achieve a better result. The cherry on top is his relationship with others, his good communication, and very good exchanges with clients, teams, and experts. In summary, Mr. BENABDERRAZAK is a good professional in his field and a good communicator whom I highly recommend.
CL

Corentin Leloup

Data Scientist

Quantmetry

Worked on the same teamMarch 26, 2023
I worked with Jaafar for a year. His expertise in data science and ML engineering is remarkable. He is professional, passionate about his work, and has in-depth knowledge of emerging technologies. He knows how to adopt an innovative approach to solve complex problems. He is genuinely interested in this field and therefore always knows the latest innovations, which he sometimes explores through personal projects.

Certifications & Credentials

Professional certifications demonstrating expertise in machine learning, cloud architecture, and AI technologies from industry-leading organizations.

Hugging Face logo
AI

AI Agents Fundamentals

Hugging Face

Issued Sep 2025

Credential ID: jbenabde

Amazon Web Services (AWS) logo
ML

AWS Certified Machine Learning – Specialty

Amazon Web Services (AWS)

Issued Feb 2023
Amazon Web Services (AWS) logo
Cloud

AWS Certified Cloud Practitioner

Amazon Web Services (AWS)

Issued Jan 2023
Amazon Web Services (AWS) logo
Architecture

AWS Certified Solutions Architect – Associate

Amazon Web Services (AWS)

Issued Jan 2023
Dataiku logo
Data Science

Dataiku Core Designer

Dataiku

Issued Jun 2022

Credential ID: xeizska962nr

National Research University — Higher School of Economics logo
NLP

Natural Language Processing

National Research University — Higher School of Economics

Issued Nov 2021
TensorFlow Certificate Program logo
Deep Learning

Google TensorFlow Developer Certificate

TensorFlow Certificate Program

Issued Nov 2020
Ready to collaborate

Let's design the next intelligent system

Whether you're validating an MVP, hardening an LLM copilot for production, or modernising analytics infrastructure, I bring a blend of experimentation, governance, and delivery discipline.

Find a time on Calendly

Reserve a slot that fits your schedule—the invite will include call details instantly.

Send a direct email

Drop a note about your challenge or opportunity and I'll respond within 24 hours.

© 2025 Jaafar Benabderrazak. All rights reserved.

Built with Next.js, Tailwind CSS & Framer Motion. Crafted in Paris.

AI copilot

Ask about Jaafar’s ML/LLM projects, articles, or experiments.