Lisbon Backend QA Engineer - API & DB Testing

Air Apps; Barcelona; On-site; EUR 52,000 - 65,000; Full time

Benefits offered by this job

Annual Bonus

Health Insurance

Transportation Budget

Meal Allowances

Urban Sports Club

Meals 100% free at office

Pension Fund

Annual Conference

Apple Hardware

Job summary

Air Apps is hiring a Backend QA Engineer to ensure reliability, performance, and scalability of our backend systems. The role focuses on testing APIs, databases, and backend services while collaborating with engineers to maintain high-quality standards across our infrastructure.

Based in Lisbon, the fully onsite position offers relocation support and a chance to contribute to an AI-powered resource planner. Ideal candidate has 2–3 years of backend experience with Node.js and TypeScript.

Qualifications

• Approximately 2–3 years of experience with backend technologies, testing, or software development in test roles.
• Experience with Node.js and TypeScript in backend environments.
• Familiarity with SQL databases, particularly PostgreSQL, and validating database queries.
• Experience testing REST APIs using Postman, Swagger, or similar tools.
• Understanding of backend testing practices including API, database, and integration testing.
• Familiarity with test management tools such as TestRail.
• Comfort reviewing pull requests and backend architecture changes to ensure quality.
• Strong attention to detail and ability to collaborate with cross-functional teams.

Responsibilities

• Design and execute tests for backend systems, including APIs, databases, and service integrations.
• Validate API functionality and performance using tools such as Postman, Swagger, or similar platforms.
• Test and verify database operations, queries, and data integrity in PostgreSQL or similar relational databases.
• Collaborate with engineering teams to review pull requests, ensuring code quality and test coverage.
• Support the development and maintenance of automated tests for backend services.
• Participate in reviewing backend infrastructure and identifying potential reliability or performance issues.
• Document and track defects, test cases, and test results using test management tools such as TestRail.
• Work closely with developers and product teams to improve testing strategies and overall product quality.

Skills

Node.js

TypeScript

API testing

Postman

Swagger

PostgreSQL

TestRail

Tools

Postman

Swagger

TestRail

Job description

Air Apps is hiring a Backend QA Engineer to ensure reliability, performance, and scalability of our backend systems. The role focuses on testing APIs, databases, and backend services while collaborating with engineers to maintain high-quality standards across our infrastructure.

Based in Lisbon, the fully onsite position offers relocation support and a chance to contribute to an AI-powered resource planner. Ideal candidate has 2–3 years of backend experience with Node.js and TypeScript.