Topics

Each cluster pulls together the writing, talks and roles behind one problem I have actually shipped against. Start here if you want the argument rather than the chronology.

Energy Tech 3 articles · 1 role

Swiss local energy communities as an engineering domain — ZEV, LEG and vZEV models, metering data, allocation, and QR-bill billing.
Engineering Leadership 5 articles · 3 talks · 2 roles

Code freezes, risk trade-offs, the staff-engineer path, and leading platform teams — practical engineering leadership writing by Rafael Roman.
Fintech Infrastructure 4 articles · 2 talks · 5 roles

Payments, neobank platforms, and regulated delivery — career and technical writing from N26, Personio, GFT, and IBM.
Fraud Prevention 2 articles · 2 talks · 1 role

Rebuilding N26's fraud engine: a static rule engine spread across dozens of microservices replaced by a stateful Apache Flink pipeline in six months, payment to decision in ~52ms.
Stream Processing 2 articles · 2 talks · 1 role

Apache Flink, Kafka, and stateful stream processing for regulated fintech — talks and writing by Rafael Roman.