Finance Cloud & Modernization Software Engineering

Integration API with external correspondents for international wire transfer management

Leading bank in Ecuador

THE CHALLENGE

The challenge

The bank managed international wire transfer operations through manual processes and point-to-point connections with international correspondents, without a standardized integration layer. This approach generated operational risks, made it difficult to onboard new correspondents, limited real-time transactional traceability, and did not meet the security and audit requirements demanded by local and international financial regulators. Each integration was ad hoc, which increased the time and cost of onboarding new correspondent partners.

The solution

We developed a 100% serverless integration platform on AWS, using a microservices architecture designed to meet the transactional, security, and traceability requirements of the financial business. Each external correspondent connects through decoupled adapters, allowing new partners to be onboarded without affecting the core system. We implemented end-to-end encryption with AWS KMS, centralized credential management with AWS Secrets Manager, and full transaction auditing with CloudTrail and CloudWatch Logs. API Gateway serves as the sole entry surface, with mutual authentication and granular access control per correspondent.

RESULTS

Results

  • New correspondent onboarding time reduced from weeks to under 3 days

  • 100% transaction traceability with auditable real-time logs

  • Zero security incidents in production since launch

  • Elastic scalability without manual intervention during transactional peaks

  • 70% reduction in manual wire reconciliation effort

Technologies

  • AWS Lambda
  • Amazon API Gateway
  • Amazon DynamoDB
  • Amazon SQS
  • AWS KMS
  • AWS Secrets Manager
  • AWS CloudTrail
  • AWS CloudWatch

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