>_ Hi, I'm Xavier

Data Engineer & developer

I build robust data platforms and write about what I learn along the way.

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Latest posts

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DuckDB version 1.4

DuckDB Labs has released DuckDB version 1.4, with several highly anticipated/useful features!

September 17, 2025

Onyxia is Still Under the Radar

Onyxia is a platform that can be installed on-premises, providing self-service technologies to data scientists. I find it very interesting, it should be promoted more!

September 14, 2025

Data Platform Infrastructure

Setting up the data platform infrastructure

August 24, 2025

Projects

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Coming soon.

Skills

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Languages & scripting

Java
Golang
Python
Bash
PowerShell
SQL (advanced)

ETL / ELT

Apache Hop
Informatica PowerCenter
Talend Data Integration
Oracle Data Integrator (ODI)
Microsoft SSIS
SAP BODS

Databases

PostgreSQL
Microsoft SQL Server
Oracle Database
MongoDB (document noSQL)
Graph databases
DWH modeling (SRC/STG/CDS-ODS/DMT layers)

Data virtualization & query

Trino
Denodo

BI / Reporting

MicroStrategy
Microsoft SSRS
SAP BusinessObjects
Qlik Sense
SSAS (cubes/tabular)

Modern data engineering

Apache Airflow
Dagster
Airbyte
dbt
Parquet
Apache Iceberg
DuckDB
MinIO/S3
OpenMetadata
Dremio

DevOps / Infra / Methods

Docker
Kubernetes
Git
CI/CD (Jenkins, GitLab CI, XL Deploy/Release)
Liquibase
Monitoring (Zabbix, Prometheus, Grafana)
SSL/PKI
Linux (Debian)

Data science / AI

Dataiku (certified Core Designer)
Local LLMs / on-prem RAG
Sovereign AI agents
MCP