Freelancer profile translated to English.
Back to original languageAbout David
I support organizations, freelancers, and startups in designing, developing, and deploying solutions that facilitate access to information in the AI era.
With experience at Leboncoin and Groupe SNCF, I work on projects with a strong technical and product dimension, combining data expertise and application development.
An Amazon Web Services certified Solutions Architect, I design robust and scalable architectures adapted to business needs.
🔹 Expertise
Data engineering & data pipelines
Full-stack development (API, front, back)
RAG (Retrieval-Augmented Generation) projects for businesses
Document intelligence & semantic search
Integration of AI functionalities into existing products
🔹 Versatility & Integration
Versatile, I work end-to-end: from product ideation to production deployment.
I integrate and connect various tools and services to create coherent and high-performing solutions:
Authentication & access management (OAuth, SSO)
Third-party API integration
AI tools orchestration
Implementation of simple and effective user interfaces
🔹 Approach
My goal: transform complex problems into concrete, useful, and quickly exploitable solutions.
I prioritize:
pragmatic architectures
a strong understanding of business challenges
clear and maintainable deliverables
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 50km)
Experience
- LeboncoinData Engineer | Data QualityDIGITAL AND ITApril 2020 - July 2024 (4 years and 3 months)Paris, France- Design and deployment of a Machine Learning-based anomaly detection system applied to technical and business KPIs, to improve supervision, data reliability, and operational responsiveness.- Full-stack developer for the internal Data Catalog: backend & frontend design and development, search engine implementation, indexing batch job orchestration. Contribution to UX/UI work and autonomous deployment on Kubernetes & AWS (CI/CD, industrialization).- Development of a payload validation framework for frontend tracking APIs: design, implementation, and production deployment. Cross-functional collaboration with Web, Android, iOS teams, as well as Data/Product Analysts in France, Spain, and Germany.- Active contribution to the data platform: POCs, technology watch, continuous improvement, and open-source contributions (PRs on projects used internally).- Facilitation of training workshops (in English) on data quality tools and Git usage for data teams in Spain and Germany.
- SNCF - Direction Numérique GroupeData EngineerTRANSPORTATIONOctober 2017 - April 2020 (2 years and 6 months)Paris, FranceCloud Computing - DevOps - CI/CD - Spark - Scala - Python - Big Data - Machine Learning - Databricks - Airflow
- doc0.comFounder & CTOSOFTWARE PUBLISHINGSeptember 2024 - Today (1 year and 10 months)Hôtel de Ville, Paris, FranceDesign, development, deployment, promotion of doc0, "The AI-ready knowledge infrastructure".API development, Postgres database, ElasticSearch, indexing pipelines, RAG, NLP, OCR, MCP interface, Slack Bot, Teams, Google, Ms365, Confluence, and other data source connectors.Deployment on multiple clouds AWS, Azure, OVHPromotion on LinkedIn, video editing with DaVinci Resolve, image processing with GIMP
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Education
- Master 2 (M2)Université Paris DiderotMaster 2 (M2)
Certifications
- AWS Certified Solutions Architect – AssociateAmazon Web Services Training and Certification2020