AsyncForge for Fintech Startups

Fintech is unforgiving. A double-charged customer is a regulatory issue. A leaked transaction is a breach. A failed KYC flow stalls revenue. A ledger that does not reconcile triggers audit findings. The engineering details matter more than in almost any other category because mistakes have legal, financial, and reputational consequences that compound over time.

Most agencies that "do fintech" do not. They have shipped a Stripe integration once and call themselves payment specialists. Real fintech engineering — handling holds, reversals, chargebacks, idempotency keys, ledger reconciliation, multi-currency settlement, KYC tier upgrades — requires engineers who have lived through the edge cases. The list of subtle bugs in fintech is long: race conditions in idempotency handling, currency conversion at the wrong layer, off-by-cents reconciliation drift, KYC re-verification timing.

The vendor landscape is also dense. Stripe vs Adyen vs Checkout.com vs Worldpay vs Mollie vs Adven. Each has different feature sets, fee structures, and quirks. Modern fintech increasingly uses unified ledger systems (Modern Treasury, Increase) or builds custom ledgers on Postgres with proper double-entry accounting. Picking wrong costs time when migration is forced later.

AsyncForge has engineers who have shipped production fintech. Submit payment flows, KYC integrations (Persona, Onfido, Sumsub), ledger design, reconciliation jobs, chargeback handling, multi-currency support. Light delivers in 4 days, Standard in 48 hours, Pro in 1 day. We design for audit from day one.

For a fintech startup, this means you can ship product without the consulting-grade billable hours that fintech specialists typically command. The compliance-aware engineering comes included.