Interviews · EU scale-ups
Interview questions, by company
What they really ask, reported by people who’ve been through it.
Wise — Backend Engineer
UK fintech for low-cost international money transfers. Backend stack: Java/Kotlin, AWS/Kubernetes, PostgreSQL, Kafka.
Scalable Capital — Backend EngineerGerman neobroker and wealth-management platform. Secure, low-latency, distributed financial systems (Java).
SumUp — Software EngineerPayments and card readers for small businesses, EU.
Alan — Software EngineerFrench digital health-insurance unicorn. Scalable, secure health-data platforms.
ClickHouse — Backend / C++ EngineerHigh-performance open-source columnar analytics database.
Grafana Labs — Backend EngineerOpen-source observability (Grafana, Loki, Tempo, Mimir). Backend mostly Go.