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Objective

Your assignment is to build an internal API for a fake financial institution using Kotlin or Java and any framework.

Brief

Your task is to build the basic REST API. Imagine you are designing a backend API for bank employees. It could be ultimately consumed by multiple frontends (web, iOS, Android etc).

Tasks

Consider using following simplified data model:

Account:
- accountId - unique account identifier
- balance - account balance

Transaction:
- txId - unique transacion identifier
- amount - transferred amount
- from - source account id
- to - destination account id

Implement following banking APIs:

  • create new account with a possibility to define balance
  • fetch account balance by accountId
  • create transaction between two accounts, that impacts account balance

Requirements

  • Latest Kotlin or Java
  • Any framework
  • Stateless service
  • Persistance layer using database
    • In memory db e.g. h2 is NOT allowed
    • Please don't host any db anywhere
  • Local development environment
    • Ability to run locally without any manual setup
  • Ignore authentication and authorization
  • Code will be pushed to private Github repository and dedicated finmid members will be added as collaborators

All the best and happy coding,

The finmid Team.