Fintech engineering
Our engineers have worked inside the systems that move money at Klarna and Visa. We bring that to teams building payments, lending and financial data products in the EU.
Financial systems punish the same mistakes repeatedly: a ledger that cannot be reconciled, an idempotency key that is not actually idempotent, a reporting job that quietly double-counts, PII in a log line.
We design ledgers and payment flows that reconcile, integrate providers and banking rails without leaking their quirks across your codebase, and build the audit trails that make a compliance review uneventful.
We are as useful reviewing a system before you scale it as building the next one.
What you get
- Double-entry ledger design that reconciles under load and failure
- Payment integrations isolated behind a stable internal contract
- Idempotency, retries and reconciliation you can prove in a test
- Audit trails and PII handling ready for review
Typical stack
- Kafka
- Event sourcing
- PSD2
Where we run this ourselves
- DoldAdress.se — taking the manual work out of a privacy service
Start here
A one-week discovery gives you a written plan and a cost, whether or not you carry on with us.
Start a project