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Arnaud Caldow

Arnaud Caldow

Principal Data Architect

Liège, BE
French, English, Dutch

Background


About

About

Data Architect with experience designing and scaling cloud-based data platforms across AWS, GCP, and Azure. Skilled in data pipeline orchestration, ETL development, and data lakehouse/warehouse solutions. Adept at mentoring engineers, leading tool migrations, and setting platform-wide standards while maintaining a high-level architectural vision to align technology with business needs.

Work Experience

Work Experience

  • Principal Data Architect, Devoteam

    Aug, 2026 - Present

  • Lead, Senior Data Engineer, Collibra

    Apr, 2022 - Aug, 20264 years 4 months

    • Data Platform Design and Migration: Led the design and implementation of a new data platform to replace the no-code stack, guiding analysts in transitioning to dbt and adopting best practices.

    • Strategic Roadmap and Stakeholder Management: Co-developed a long-term roadmap for the Data Engineering team, aligning projects with company goals while respecting stakeholder priorities.

    • Hiring and Team Expansion: Conducted technical interviews and skill assessments resulting in the hire of new data engineers.

    • LLM-Powered Data Assistant: Led the development and deployment of a Streamlit web application integrated with a large language model, enabling business users to query and explore company data conversationally.

    • Data Quality Integration: Developed an Airflow provider for Collibra Data Quality, enabling seamless integration of quality checks into ETL processes and improving data accuracy.

    • Process Automation: Automated requirement-gathering processes, reducing response time by 40% and enhancing user support efficiency.

    • Pipeline Modernization: Led the migration of 50+ data pipelines to a new orchestration tool, enhancing processing speed and reliability.

    • Data Lake and Data Mesh: Brought in new data sources and standardized best practices, improving data accessibility and pipeline consistency.

    • Technical Leadership: Mentored junior engineers and conducted workshops to advance team expertise in data engineering best practices.

  • Data/Cloud Engineer Consultant, Lucy In The Cloud (Micropole)

    Sep, 2019 - Mar, 20222 years 6 months

    • ETL and Data Lakehouse Development: Designed ETL solutions for a data lakehouse, empowering analysts with accessible, self-service data.

    • Serverless Solutions: Implemented serverless ETL workflows and pub/sub messaging, automating high-volume data processing.

    • Automation and DevOps: Built Jenkins pipelines for automated ETL deployments on AWS, ensuring reliable, scalable data integration.

Skills

Skills

  • Programming

    Python

    Scala

    SQL

    Bash

    Rust

    Golang

  • AI

    Claude Code

    Opencode

    Openrouter

    Agentic Engineering

  • Data Tools

    Spark

    Airflow

    dbt

    dlt

    Kafka

    ETL

  • Databases/Datalakes

    S3

    GCS

    Redshift

    BigQuery

    Snowflake

    Databricks

    AWS Glue/Athena

    PostgreSQL

  • Cloud

    AWS

    GCP

    Azure

  • DevOps

    Terraform

    GitHub Actions

    Jenkins

    Docker

    Kubernetes

Education

Education

  • Business Engineering, M.S., Louvain School of Management (LSM)

    Sep, 2017 - Jun, 2019

  • Business Engineering, B.S., Louvain School of Management (LSM)

    Sep, 2014 - Jun, 2017

Certificates

Certificates