A selection of personal projects, built end to end: architecture, development, deployment.
Some are deployed in production and genuinely used, others are architecture or learning exercises presented as such: each serves a specific purpose, not a tutorial followed to the letter.
Reference project demonstrating hexagonal/DDD architecture, test-first, end to end.
Kotlin/Spring Boot backend and Angular frontend demonstrating hexagonal/DDD architecture with TDD-BDD, Kafka event streaming and Terraform infrastructure. Not yet publicly deployed: screenshot taken locally.
Domain, application and infrastructure: all three layers delivered
A teaching implementation of the counterparty risk calculations (EAD, PFE, CVA) I work with in investment banking.
A TypeScript MVP, hexagonal architecture and end-to-end TDD, making counterparty risk concepts approachable without access to a real banking system.
Deployed and usable online
A bilingual reference site on market finance and counterparty risk, for developers with no finance background.
20 articles and a 71-term glossary, written to make what I practice in investment banking accessible: exposure, CVA, netting, collateral, SA-CCR.
20 articles, 71-term glossary
The same domain as counterparty-risk-lab, this time as a Kotlin library rather than a webapp.
A teaching Kotlin/JVM library for calculating exposure, expected loss (EL) and CVA on securities financing transactions (SFT), with a strong pedagogical disclaimer: built to learn and prototype, not for production banking use.
No public Kotlin/JVM equivalent existed before this project
Kortex's revision engine, reapplied to Kafka: my own tool to stay sharp on a subject I use on client engagements.
Expert-level spaced-repetition flashcards on Apache Kafka (clusters, producers, consumers, exactly-once transactions, Kafka Streams, schema registry), bilingual, offline-first with cross-device sync.
Used personally to keep Kafka skills sharp between engagements
Replicable template that grew into a family of revision apps (Kafkex, GCPTrainer, and others).
Kotlin revision app based on spaced repetition (Leitner SRS), bilingual French/English.
Several apps built on the same engine
The same spaced-repetition engine as Kortex, applied this time to my own freelance interview prep.
Spaced-repetition flashcards to prepare for freelance technical interviews: AWS, Kubernetes, DDD, hexagonal architecture, TDD, Kafka, Kotlin, counterparty risk, AI-assisted development.
Used for my own freelance interviews
Learning the Go language from scratch, bilingual French/English, no gamification: just pedagogical clarity.
A path of modules and lessons with exercises to discover Go, fully typed pedagogical content kept separate from the display engine.
Freely deployed and usable online
Learning a language in public: 16 tested examples, from the first program to async.
A pedagogical path through the Rust language from scratch, each concept illustrated by a standalone example with its own unit tests, clean under clippy.
16 unit-tested examples