Backend QA Engineer

About the role

Air Apps, a Lisbon-founded company building an AI-powered personal and entrepreneurial resource planner, is looking for a Backend QA Engineer in Lisbon. The role ensures the reliability, performance and scalability of backend systems by testing APIs, databases and backend services, working closely with engineers to keep quality standards high.

Key responsibilities

• Design and run tests for backend systems, including APIs, databases and service integrations
• Validate API functionality and performance with tools such as Postman, Swagger or similar
• Test database operations, queries and data integrity in PostgreSQL or similar relational databases
• Review pull requests with engineering teams to check code quality and test coverage
• Help develop and maintain automated tests for backend services
• Review backend infrastructure and flag potential reliability or performance issues
• Document defects, test cases and results in tools such as TestRail
• Work with developers and product teams to improve testing strategies

Required profile

• About 2-3 years of experience with backend technologies, testing or software development in test roles
• Experience with Node.js and TypeScript in backend environments
• Comfort reviewing pull requests and backend architecture changes
• Strong attention to detail, problem-solving skills and ability to collaborate across functions

Required skills

• Familiarity with SQL databases, especially PostgreSQL, and validating queries and data integrity
• Testing REST APIs with Postman, Swagger or similar
• Understanding of API, database and integration testing
• TestRail or similar test management tools are beneficial

What we offer

• Annual bonus
• Health and life insurance
• Transportation budget
• Coverflex benefits package and urban sports club membership
• Meals free at the office
• Pension fund
• Annual conference with the team
• Apple hardware ecosystem for work