Portfolio
What I’ve Built
Real systems. Real constraints. Real results.
PatternAlarm
Most fraud systems catch problems hours too late. This one scores 10K+ transactions per minute with 97.5% accuracy — fast enough to block fraud before it clears.
Built as a sandbox to stress-test streaming architectures at scale. The interesting part? A 79× performance fix that came from rethinking the pipeline, not throwing more servers at it. Everything ships: Terraform, services, pipelines. ~$300/month to run..
Full write-up on the bottleneck hunt → https://github.com/acourreg/patternalarm
Stack: Kafka · Flink · Spark ML · FastAPI · Airflow · Terraform · Scala · Python · Java
🤖 Gen-AI Data Pipeline
When manual data prep ate 12 hours per config.
New streaming pipelines needed bootstrapping data — extracted manually from messy documents. Slow, error-prone, blocking launches.
Built a GenAI + graph solver combo that parses docs, matches templates, and handles edge cases. Now it takes 5 minutes and costs $0.30.
Result: 97% time cut · 97% accuracy · No launch delays
📊 Gaming Analytics Engine
“Just give me the stats” — but flexible, and fast.
Product teams needed to slice player data across any dimension: by game, by region, by cohort, over years of history. Existing tools couldn’t keep up.
Built a custom query engine that translates plain requests into optimized queries across billions of events..
Result: Real-time on demand analytics over years of data in 3 seconds · No more “we’ll get back to you tomorrow”
🏦 Termsheet Generator
Derivative contracts written by rules, not guesswork.
Trading desks drafted complex contracts manually — slow, error-prone, compliance risk. Each clause depended on dozens of business rules scattered across people’s heads.
Built a solver that encodes those rules and generates contracts automatically. Lawyers review, not write. Controllers approve via admin UI.
Result: 50% drafting time cut · €10M+/day volume · Zero compliance surprises
💃 Dance Marketplace
A real startup — legal, payments, and all.
Marketplace connecting dancers with teachers. But the real work was behind the scenes: web scrapers feeding a live event map, automated Facebook posts, and Analytics funnels optimized through A/B testing.
Full legal stack too — EU-compliant payments, contracts reviewed with a lawyer.
Result: ×4 conversion rate · Full GTM from scratch