Banking infrastructure,
built by domain experts.
We've spent years building production banking and transactional systems. Now you can use our products — ledger, wallet, fraud detection, reconciliation, campaigns, and reporting — to ship financial products correctly from day one. We've already made the mistakes, hit the edge cases, and learned the pitfalls — so your team doesn't have to.
The hardest part isn't writing the code.
Financial systems aren't a code problem — they're a domain, risk, and correctness problem. Building them right means knowing the pitfalls before you hit them. Get them wrong and the consequences are permanent.
Required to know which edge cases matter — idempotency, rounding, holds, race conditions. We've been through them. You shouldn't have to.
Lost to fraud by financial services without real-time detection. The risk is bigger than the build.
Can mean regulatory action, lost customer trust, and a financial crisis. Correctness isn't optional.
Track every movement of money.
Six services that ledger, reconcile, and audit the funds flowing through your business — so every cent is accounted for. Pick what you need, integrate once, and launch.
Three steps to production.
Skip months of domain learning. Integrate primitives that already know how to handle money correctly.
Integrate
Connect via our REST API. Set up your chart of accounts, configure transaction templates, and define your business rules.
OpenAPI spec included. SDKs in TypeScript and Python coming soon.
Configure
Customize to your business. Set account limits, enable fraud rules, configure campaigns, and define reconciliation workflows.
Per-merchant configuration. No code changes required.
Launch
Go live with production-grade financial infrastructure. Multi-tenant, multi-currency, with real-time monitoring and analytics.
Enterprise SLAs. Dedicated support. Continuous updates.
Built for teams that can't afford to get it wrong.
Four pillars that separate financial software you can trust from code that just compiles.
Domain Expertise
Years of financial domain knowledge baked into every primitive. Skip the regulatory rabbit holes and edge cases that take years to learn.
Correctness
Double-entry accounting, real-time fraud detection, tenant isolation, audit trails. Every transaction is correct by design — not by hope.
Compliance
GDPR controls, sanctions screening, audit logging, financial reporting. The regulatory work is already done.
Scale
Multi-tenant, multi-currency, enterprise-grade. From 100 transactions to 100 million — without re-architecting.
See it in action.
A purpose-built interface for managing your entire financial operation.
What's at stake when you get money wrong.
Code is the easy part. The hard part is everything around it — and that's where projects fail.
Domain Knowledge
You don't know what you don't know. Holds, idempotency, currency rounding, race conditions — the pitfalls are subtle and the cost of learning them in production is enormous.
Battle-tested financial primitives — designed by people who've built ledgers in production for years.
Financial Loss
Incorrect balances, undetected fraud, unreconciled transactions drain revenue and customer trust.
Double-entry correctness, real-time fraud detection, automated reconciliation — built in.
Reputation
Wrong customer balances, security incidents, and downtime destroy years of brand trust overnight.
Tenant isolation, audit trails, enterprise-grade security from day one.
Regulatory Compliance
Failed audits, regulatory fines, missing sanctions screening — the regulatory rabbit hole runs deep.
GDPR controls, audit logging, sanctions screening, financial reporting — included.
Time To Market
Even with AI, you still have to learn the domain, debug edge cases, handle compliance, and maintain it forever.
Skip months of domain learning. Integrate proven primitives and ship in weeks.
Built for how you work.
From startups to enterprises, Goldie Street adapts to your business model.
Launch financial products faster
Whether you're building a neobank, payment app, or lending platform — Goldie Street provides the ledger, wallet, and fraud detection infrastructure so you can focus on your product, not plumbing.
- Multi-currency ledger
- Per-user wallets
- Real-time fraud scoring
- Regulatory reporting
Ready to launch your
financial product?
Stop wrestling with double-entry, holds, and reconciliation edge cases. Get in touch to see how Goldie Street can de-risk your roadmap.