QA & Unit Test Engineer

QA & Unit Test Engineer We are seeking a QA & Unit Test Engineer responsible for building and maintaining automated tests that ensure the reliability, accuracy, and stability of the platform. Technology Stack * Python / Django * Flutter * AWS Responsibilities * Develop and maintain unit, integration, and regression tests. * Validate business logic, workflows, and system constraints. * Test valid and invalid inputs, success and failure scenarios, edge cases, and error handling. * Identify gaps in test coverage and potential defects before release. * Participate in code reviews with a focus on software quality and test effectiveness. * Collaborate with developers and product stakeholders to clarify requirements and prevent regressions. Testing Standards Proper unit testing goes beyond code coverage. Tests must verify: * Business rules and application logic. * System constraints and permissions. * Boundary conditions and edge cases. * Error handling and exception scenarios. * Expected and unexpected user behavior. Mock objects should be used only to isolate external dependencies (APIs, databases, third-party services, AWS services, payment providers, and external APIs). The system under test should be tested using real implementations whenever practical to ensure business logic is being validated rather than mocked. Qualifications * Experience testing Python/Django applications. * Experience testing Flutter applications. * Experience testing Celery tasks, asynchronous workflows, and background processing. * Familiarity with AWS-based architectures and cloud services. * Strong understanding of unit, integration, and regression testing. * Experience testing complex workflow-driven SaaS applications. * Ability to identify defects through critical analysis of business requirements and edge cases.