Hire Cybersecurity Expert for Fintech Startups
Senior, direct, no layers

In fintech startups, a payment fails with no useful error, a compliance check blocks a legitimate user, and a ledger balance drifts from the bank balance by a few cents nobody can explain. The starting point is not a tool purchase but a map: which systems hold identity documents, account balances, transaction histories, and payment credentials, who can reach them, and what happens if that access is misused.

Defence is built around the real attack path for this business: account takeover, payment fraud, credential stuffing against logins, and an API key leaked into a public repository. Controls are chosen for that path first, and the generic hardening comes after, not instead.

The first piece of work is a plain-language risk picture for user onboarding and identity checks: what is exposed, what it would cost, and the three fixes that matter most, in order. Discuss that first workflow directly; wider scope follows only if the first piece earns it.

The systems in play are payment gateways and banking partners, identity-verification vendors, fraud tooling, transaction ledgers, and compliance reporting. Nothing here assumes a greenfield rebuild; the engagement works with the tools already in daily use.

Configuration comes before purchase. Most of the exposure in payment gateways and banking partners, identity-verification vendors, fraud tooling, transaction ledgers, and compliance reporting is closed by tightening settings, removing stale accounts, and turning on the logging that is already available.

Where a vendor controls the system, the engagement documents the risk and the questions to put to the vendor, rather than pretending the business can fix what it does not control.

The practical change is calmer operations: fewer surprise account problems, a tested answer for account takeover, payment fraud, credential stuffing against logins, and an API key leaked into a public repository, and a fix list the business works through in order instead of reacting to headlines.

That is the standard this engagement is measured against: not a launch announcement, but a workflow the business still uses months later, maintained by its own team with documentation handed over at the end. Browse all hire engagements or discuss your workflow directly.