Fintech API integration for your product workflow
Your application needs information or actions from another provider, but the connection must fit the way your product works. Gateflow develops fintech API integrations around the required workflow. The project defines which records move, which events change status and how the application handles an unsuccessful request.
Fintech API integration with Gateflow
Gateflow builds software and connects existing systems from Frankfurt. The company works with teams across Germany on defined integration assignments. Read about Gateflow for the service scope. Your team selects the provider and supplies the approved access and business rules needed to implement the connection.
API requirements before connector development
The integration starts with the operations your product needs and the provider documentation that supports those operations. Gateflow checks available environments, access methods and limits. Your team can then see whether the proposed workflow is supported and which questions need a provider answer before development proceeds.
Authentication and API access for each environment
Development and production require their own access arrangements. Gateflow implements the agreed authentication method and keeps credentials outside public application code. The handover identifies who owns renewal and revocation, so an expired or replaced credential has a documented recovery path for the operating team.
Data mapping between fintech systems
Data mapping defines how identifiers, amounts and timestamps move between source and destination. Gateflow implements the agreed system integration and records transformations that affect meaning. Your team reviews sample records before broader transfer, including currencies or missing values that require a specific business decision.
Webhook processing inside the application
A provider event needs a defined effect on the application state. Gateflow develops application logic for the selected events, with signature checks and handling for repeated delivery where supported. The system records whether an event was processed so investigation can follow the update from receipt to the resulting record.
Integration testing for failed and repeated requests
A successful request is one test case. Gateflow also checks timeouts, rejected input and repeated delivery against the provider behavior. Your product owner agrees which actions can be retried and which require review. Test results document the cases covered before the connection receives production access.
API reconciliation and visible unresolved records
The application needs a way to find records whose status differs between systems. Gateflow can implement agreed comparison or reconciliation checks using available provider data. Unresolved records remain visible for review, with references that let the responsible person investigate the source of the difference.
Fintech integration project and technical handover
Bring the provider documentation, intended workflow and names of the systems involved. The project process sets acceptance criteria and responsibilities for provider communication. Gateflow hands over the agreed code and connection instructions, including the checks required when either application or the provider API changes.
Discuss your fintech API integration
Gateflow connects your fintech application to approved provider APIs and implements the agreed data mappings. You will receive a tested connection with visible transfer status and instructions for investigating failed requests.