Interest & Product Logic Specialist

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.

• Define and document detailed requirements for interest calculation logic, accrual rules, and fee structures, to be delivered by

external suppliers

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

requirements

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

needed

• Provide hands-on internal support to other teams (finance, customer service, operations, and others) on questions about

interest, fees, and product behaviour — this is a significant and ongoing part of the role

• 4+ years of experience in a financial, analytical, audit (internal or external), or product role within financial services,

lending, or payments

• Strong understanding of interest calculation methodologies (e.g. effective interest rate, simple interest, compound interest,

XIRR)

• Experience writing detailed financial business rules and specifications for systems built by others, , or experience auditing

and validating such systems

Fluent English is required for this role. Fluent Swedish is not a hard requirement, but is desirable as Swedish is the language

spoken locally in the team and will make day-to-day collaboration easier.