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Case studies

How Flowmynt engagements run for fintechs and banks, told as cases: the pressure, what arrives on day one, how the work runs, what comes back and what stays your decision.

These case studies describe engagement patterns, written without client names or invented figures. Each is adapted from work the founder's engineering company, Exekova, documents publicly, and each names its source.

Six steps for draining a reconciliation queue, from reproducing an exception class to closing it with a regression test, on a mint background.

Fintech · Reconciliation

Reconciliation breaks stop ageing.

Mismatches between your ledger, the processor file and the bank statement are usually small logic gaps, but each needs reproducing before it can be fixed. Here is how Flowmynt drains the queue: reproduce, correct, guard and review inside one run.

23 September 2026 · 3 min read

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Six steps for proving API boundaries, from enumerating entitlements to reporting residual risk, on a lavender background.

Fintech · Security & Controls

The defects that pass every test.

The most serious flaw in a fintech API is an authorisation defect, and it passes every functional test because the request is well-formed. Here is how Flowmynt proves each boundary fails closed, and sweeps code and bundles for secrets.

23 September 2026 · 3 min read

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Six steps for PCI DSS 4.0 payment page controls, from reducing scope to handing evidence to the assessor, on a paper background.

Fintech · Security & Controls

PCI DSS 4.0 made the payment page a controlled surface.

Requirements 6.4.3 and 11.6.1 mean every script reaching a payment page must be inventoried, authorised and integrity-checked, with tamper detection you can show firing. Here is how Flowmynt produces the inventory, the detection and the evidence as one run.

23 September 2026 · 3 min read

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Six steps for a regulatory reporting change, from diffing the specification to raising ambiguities as decisions, on a lime background.

Banking · Payment Operations

The reporting schema changed. The deadline did not.

A regulatory reporting update arrives as a specification change with a fixed go-live. Here is how Flowmynt diffs the specification, changes the mapping and validation rules, runs historical submissions and hands you a reviewed change with the evidence attached.

23 September 2026 · 3 min read

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Six steps for fanning a core banking change out across adapters, from mapping the fan-out to cutting over per adapter, on a coral background.

Banking · Flowmynt Connect

One core change, every adapter.

Message formats, field lengths and batch windows change on the core banking system's schedule, and every connected adapter needs the change applied and contract-tested. Here is how Flowmynt holds the whole fan-out as one run so no adapter is discovered late.

23 September 2026 · 3 min read

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