You design and build the services behind our payment reconciliation engine – ingesting settlement and payout files from banks and payment providers, normalising them, and matching them against our own transaction data.

You implement the matching logic and the exception handling around it: what matches automatically, what lands in a review queue, and how a human resolves it.

You own correctness in a domain where it is not negotiable – idempotent processing, traceable matches, and safe reprocessing of historical data without corrupting what has already been reconciled.

You integrate new banks and payment service providers, and keep those integrations maintainable as formats and requirements change.

You translate accounting and finance rules into software that is readable and testable, working directly with Product and our Finance stakeholders.

You make the architectural decisions for a greenfield system – module boundaries, data model, and how reconciliation fits into our wider platform.

You keep the system observable and operable: clear logs, meaningful metrics, and a clean answer to "why did this transaction not match?".

You review code, share context with the front-end engineer on the team, and help set the engineering standard for a team that is just starting out