Engineering Work

Designer and Tech Lead

Reusable Component Testing Platform

Designed a reusable component testing suite for Spring services, enabling repeatable validation of API responses, database state, Kafka events, and dependency interactions.

Testing AutomationSpring BootKafkaWireMockJSON DSL

Context

Large backend systems need fast and reliable regression feedback before changes reach shared environments.

Problem

Component tests were inconsistent across services and often depended on shared environments, making them harder to maintain and trust.

What I Built

  • Reusable component testing suite for Spring Framework and Spring Boot services.
  • Real Spring wiring with embedded infrastructure.
  • Mocked external calls.
  • API response, DB state, Kafka event, and dependency validation.
  • JSON-based DSL for test definitions.

Technical Highlights

  • Embedded service dependencies
  • WireMock-based external boundaries
  • Kafka event assertions
  • Database-state validation
  • Declarative JSON scenarios

Impact

  • Improved repeatability of service-level validation.
  • Reduced dependency on shared environments.
  • Improved release confidence and regression safety.

Skills / Tags

  • Spring Boot
  • Kafka
  • WireMock
  • JUnit
  • Testing Automation
  • JSON DSL