Industries

FinTech engineering for startups

Money systems fail in specific ways: double charges, lost events, ledgers that do not balance. I help FinTech teams design for correctness first, then for scale.

Problems I usually see

/Retries that create duplicate payments, because operations are not idempotent.
/Balances computed from mutable rows instead of an append-only ledger.
/Compliance flows (KYC/AML) bolted on late and tangled into core services.
/Tenant data separated by convention rather than by design.

How I help

Scaling and reliability

Find the bottleneck, remove the deployment risk, and protect the money path.

Backend scaling

Case study

Re-architecting a monolithic payment gateway into independently deployable services.

Read the case study

Start with these articles

Payment idempotency and ledger design

How to stop double charges and keep a trustworthy ledger.

Read

Double-entry ledgers at scale

Why balances should be derived, not stored.

Read

KYC and AML system design

Where compliance flows belong in the architecture.

Read

Frequently asked questions

Do you give legal or compliance advice?

No. I give engineering guidance on architecture and controls. Regulatory interpretation belongs with your counsel or compliance lead.

Not sure where to start?

Tell me what is going wrong. In 30 minutes we will work out whether I can help, and what the first step is.

Book a free 30-minute technical review