About
Independent expert review for slow, costly or unreliable data platforms.
I’m Julien Laurenceau. I help CTOs, Heads of Platform and engineering teams diagnose and fix performance, reliability, scalability and cost issues on complex data, cloud and AI infrastructure.
I do not sell generic cloud advice or staff augmentation. I’m called when systems are too slow, too costly, too fragile or too complex to reason about internally — and the team needs an independent read before spending months in the wrong direction.
Background
15+ years of hands-on production experience in distributed systems, data platforms and private cloud. PhD in numerical optimization with a 10-year HPC background. I’ve worked across banking, telecom, aerospace and satellite imagery — environments where performance and reliability have direct business impact.
Where I’ve gone deep
- Multi-petabyte data lakes on private cloud
- Spark on Kubernetes — performance, reliability, cost
- Kafka pipelines — sizing, performance, reliability
- Object storage at scale: Ceph, MinIO, S3
- Cassandra and ScyllaDB in production / banking contexts
- Satellite imagery and geospatial pipelines
- HPC and numerical optimization
- Private cloud architecture and capacity planning
How I work
Remote-first, scoped engagements with clear deliverables. I prefer short, high-leverage interventions — audits, flash reviews, expert calls, fractional advisory — over long staff-augmentation missions. The goal is to leave teams with a sharper picture of their system and a prioritized roadmap, not a dependency.
Based in Bordeaux, working with clients in France and internationally.