We are looking for a specialist who combines financial know-how with strong
analytical skills to join our Core Ledger team. Our platform contain core ledger
systems both fully developed internaly and developed and delivered by external
suppliers. As an Interest & Product Logic Specialist, you will define and
document the business rules behind interest, fees, and product configurations,
and verify and test that what our internal- and external suppliers deliver
matches our requirements and works correctly. A significant part of this role is
providing hands-on internal support to colleagues across the business who have
questions about interest, fees, and product behaviour — this is something all
specialists in the team spend a lot of time on. Getting this right is essential
— it directly affects how accurate and competitive our financial products are.
You will join a small, close-knit team and have a great opportunity to make a
direct impact early on and help shape it as it grows.

KEY RESPONSIBILITIES

* Define and document detailed requirements for interest calculation logic,




accrual rules, and fee structures, to be delivered by external suppliers

* Translate financial product requirements from business and product teams into
precise specifications for our suppliers

* Verify and test the product configuration delivered by suppliers, ensuring it
behaves correctly for all financial instruments

* Ensure the mathematical and financial correctness of calculation logic
delivered, including edge cases and regulatory requirements

* Collaborate with finance, compliance, and product teams to validate that
supplier deliveries meet business intent

* Support audit and regulatory reporting by ensuring calculation logic is
transparent, traceable, and well-documented

* Investigate and resolve discrepancies in interest calculations, fee postings,
or product behaviour, working with suppliers when needed

* Define and execute test cases for financial calculation logic, including

📌 Interest & Product Logic Specialist (Málaga)
🏢 Avarda Group
📍 Málaga