QA Engineer (Web Applications – React.js | Next.js | NestJS)

The ideal candidate has experience testing TypeScript-based frontend and backend applications and is comfortable working with both manual and automated testing approaches. Familiarity with test automation tools such as Cypress, Playwright, Selenium, or Jest is highly desirable. Experience working with Dockerized environments, applications deployed on platforms like Vercel or AWS, and integrating tests into CI/CD pipelines is a strong advantage. Knowledge of testing state management solutions such as Redux or React Query will help ensure application stability and performance.

The QA Engineer will be responsible for designing and executing test plans, test cases, and test scenarios to validate both frontend and backend functionality. This includes testing responsive user interfaces built with React.js and Next.js, verifying server-side rendering behavior, and validating RESTful APIs or GraphQL endpoints developed with NestJS. The role also involves testing user authentication and authorization flows, validating CRUD operations, and performing database checks using PostgreSQL, MongoDB, or MySQL. The QA Engineer will ensure proper error handling and logging, identify and document defects, track them through resolution, and collaborate closely with developers to continuously improve software quality.