Case study

End-to-End Credit Management Platform

Cover the full credit lifecycle — admissions, evaluations, credits and portfolio tracking — on a modular base that grows in phases.

Status: In development
Role: Full-stack development
Technologies: Laravel · PHP · React · MySQL · Modular monolith

Modular business domains: 9
Of the API verified on every change: 100%
Access scopes: user, role and branch: 3

Operational context

Nine business domains with their own rules, evaluation that differs by client type, and access scoped by user, role and branch.

Solution delivered

A modular monolith: each domain is a module with its own public boundary and dependencies running one way; the internal layers land module by module.

Architecture decision

The Domain layer does not depend on the framework, and no module reaches into another module’s tables or internal classes: it only consumes its public Actions and Queries.

System architecture

The flow shows how responsibilities are separated from the HTTP entry point through persistence.

Http · controllers, requests, resources
Application · use cases and transactions
Domain · business rules
Infrastructure · persistence and adapters

Verifiable evidence

118 public routes frozen in a contract test that pins the method, URI, controller and middleware of each one.
Nine domains defined, each an independent module with its own public boundary.
Authorization at three levels: JWT session, granular per-action permission and branch scope.
Domain layer free of framework dependencies; modules talk only through public Actions and Queries.

Technical contract

// RouteContractTest.php

['GET', 'api/v1/business-process',
  BusinessProcessController@index,
  ['jwt', 'permission:process.list']],

['PATCH', 'api/v1/business-process/{id}',
  BusinessProcessController@update,
  ['jwt', 'permission:process.edit']],

Each row pins the method, URI, controller and middleware. If a migration changes them, the test fails before the frontend does.

Outcome

The project turns scattered operational rules into a traceable, tested, and maintainable system.

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