Fintech Software Development Company in Melbourne, built to ship.

Money is not a float and a balance is not a column

Amounts are integers in minor units, and a balance is derived from an append-only ledger rather than stored and updated. Mutating a balance directly is the bug that produces money from nowhere under concurrency, and it is very hard to find afterwards because the audit trail is the thing you skipped.

Reconciliation is a daily product feature

Your ledger and the processor's settlement file will disagree, and the disagreement is normal: timing, fees, reversals, currency rounding. What matters is that a person can see the difference each morning and resolve it, which means reconciliation is a screen someone uses, not a script nobody runs.

Idempotency at every money-moving boundary

Networks retry. Users double-tap. Without an idempotency key on the payment intent, one intent becomes two charges, and the customer finds out before you do. Every write that moves value needs a key and a stored result for that key.

KYC and AML shape the data model, not just the signup flow

Verification state, document expiry, sanctions screening outcome and the reason for a decision all have to be modelled and retained, because a regulator will ask why a specific customer was approved in a specific month.

Working overlap

3.5 hours a day

Same offset as Sydney. Morning-for-us, afternoon-for-them, about three and a half hours shared.

The law that applies

the Privacy Act 1988 and the Australian Privacy Principles

APP 8 accountability for overseas handling applies identically. Victorian public sector work adds its own protective data security standards on top.

How buying works here

Melbourne carries more of Australia's healthcare, education and research technology than Sydney, and those sectors bring procurement rules and ethics review that commercial work does not. The buyer is more often a committee than a person, which changes how a proposal should be written: it has to survive being read by someone who was not in the meeting, so the document does the selling rather than the conversation.

Procurement

Slower and more documented than Sydney on institutional work, comparable on commercial.

Payments

PayID and the New Payments Platform as in Sydney, with BPAY carrying more weight in the institutional billing that dominates this market. Surcharging is legal and disclosed and has to appear in the total the user sees.