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OLYSTIQUE
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CapabilityCustom software · Backend engineering

Financial Operations Platform

A ledger-backed platform for businesses that move money on behalf of others and need every figure to reconcile.

Context

Businesses handling payouts, collections or float on behalf of customers reach a point where a transactions table is no longer sufficient. Balances need to be derivable, corrections need to be traceable, and the finance team needs to answer 'why is this number what it is' without reading application code.

Design decisions

01

Double-entry ledger as the source of truth

Balances are derived from immutable entries rather than stored and mutated. Corrections are posted as reversing entries, so history stays intact and every figure can be traced to the events that produced it.

02

Idempotency at every write boundary

Payment providers retry, networks fail mid-request, and users press buttons twice. Every state-changing endpoint accepts an idempotency key so a repeated request produces the same result rather than a duplicate transfer.

03

Reconciliation as a scheduled system function

Provider statements are ingested and matched against internal entries on a schedule. Discrepancies raise alerts with the context needed to resolve them, instead of surfacing during month-end close.

04

Separation of authorisation from execution

Initiating a payout, approving it and executing it are distinct operations with distinct permissions and a complete audit trail. It is the control finance and compliance teams ask for first.

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