Selected case studies.
/ client work · shipped
analytics / 2025

Product Analytics with GA4

GA4 data modeling across e-commerce and financial services clients using dbt and Dataform. Medallion architecture with specialized marts for user behavior and product interactions. FinOps optimization for cost and performance.

GA4dbtDataformBigQueryKestraFinOpsData Studio
Hanalytics · 2025 2 Platforms · +6h Saved per week
finops / 2025

GA4 FinOps & Performance Optimization

Refactoring GA4 workloads in BigQuery: query optimization, partitioning, clustering, and governance implementation.

BigQueryGA4SQLFinOpsKestra
Hanalytics · 2025 -30% Average query cost · 2x Query speed
martech / 2025

Marketing Analytics Platform Migration — Dataroma → MDS.

Technical lead for migration from Dataroma to Modern Data Stack. Multi-source integration (Catchr, Couchdrop) and DSP data extraction. dbt standards implementation, platform documentation, and client team training.

dbtKestraGCPPythonCouchdropCatchr
Hanalytics · 2025 2x Delivery speed · 100% Governed models
retail / 2025

Multi-Store Retail Analytics & Monitoring

Refactoring and optimization of multi-store dashboard platform. Dashboard architecture redesign, Row-Level Security (RLS) implementation, consolidated global dashboard, and automated Slack alerting.

dbtSlack APIData StudioGCPGA4
Hanalytics · 2025 RLS Secure access · 24/7 Monitoring
data platform / 2025

Modern Data Foundation & Orchestration — 3 industries.

Medallion architecture with Kestra orchestration and Airbyte ingestion. Modular dbt models with marts layer. Automated retry mechanisms, error handling, and data quality framework. Integrated with Funnel for marketing analytics.

KestraAirbytedbtBigQueryFunnelShopify
Hanalytics · 2025 +5h Saved per week · 100% Data confidence
monitoring / 2025

Data Monitoring — Slack-Based Analytics Alert System

Slack monitoring system for dbt pipelines and business KPIs. Automated alerts for failures and errors. Scheduled KPI reporting with thresholds. Interactive Slack commands for data access. Delivered across 3 industries.

Slack APIKestraBigQueryPythondbt
Hanalytics · 2025 Real-time alerts · 3 Industries
Side projects.
/ personal builds
personal / 2024

Berlioz — AI Nutrition Assistant for Cats

RAG chatbot helping cat owners evaluate pet food for renal and urinary conditions. Semantic search over a veterinary knowledge base with URL analysis, OCR label reading, and an AI expert chat.

RAGOpenAIUpstash VectorNode.jsVanilla JS
Personal · berlioz.camillelebrun.fr ~$0 Infra / month · <1.1s Response time
personal / 2024

Automated Tech Watch System

Automated content aggregation and analysis from email and RSS sources to build a continuous intelligence pipeline.

PythondbtdltBigQueryCloud RunTerraform
Personal project +5h Saved per week · 1 Knowledge base
Ready to transform your data platform?
Let's discuss how I can help you build scalable, reliable data solutions for your business.
Get in touch →