Julien Grandmourcel
Senior Data Engineer
Lyon, Auvergne-Rhône-Alpes, France
Summary
👤
Senior🎓
Top SchoolJulien Grandmourcel is a Senior Data Engineer with 11 years of experience building and leading data platforms across media, streaming, and consultancy environments from Lyon, France. He combines hands-on expertise in Modern Data Stack technologies (Airflow, Spark/Scala, Hive) with a strong emphasis on code quality, CI/CD, testing and observability to deliver reliable ingestion, aggregation and data quality pipelines. Julien has balanced individual contributor work with people leadership, having managed and mentored data engineering teams while remaining a technical lead on core data products. He also trains engineers on best practices—teaching Python, Airflow, Spark and agile methods—which reflects his focus on raising engineering standards. Pragmatic and process-oriented, he often drives internal R&D and migrations to cloud-native architectures, making him a go-to partner for modernization and audit projects.
11 years of coding experience
12 years of employment as a software developer
Engineer's degree Computer Science, Engineer's degree Computer Science at Polytech Nice - Sophia AntipolisDUT Informatique, DUT Informatique at IUT informatique de Vannes
Stackoverflow
1reputation
1kreached
0answers
1question
Github Skills (76)
python10
code-kata10
etl10
automation10
mlops10
orchestration10
data-engineering10
scheduler10
elt10
data-integration10
data-pipelines10
monitor10
data-science10
workflow-engine10
apache10
Programming languages (7)
Github contributions (5)
julien-gm/Tennis-Refactoring-Kata
Mar 2022 - Jan 2023
Starting code for a Refactoring Code Kata on the Tennis rules
Contributions:49 reviews, 43 PRs, 24 pushes in 10 months
code-refactoringtenniscode-katarefactoringrules
julien-gm/all-team-hat
Mar 2019 - Jul 2023
Generates as much as possible the most balanced distribution of players between n teams
Contributions:3 releases, 38 PRs, 80 pushes in 4 years 4 months
playersbalanceddistribution
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