Lisbon Onsite Backend QA Engineer (API & DB Focus)

Air Apps; Greater London; On-site; GBP 44,000 - 55,000; Full time

Benefits offered by this job

Annual Bonus

Top-tier Health and Life Insurance

Transportation Budget

Coverflex benefits package

Urban Sports Club membership

Meals 100% free at the office

Pension Fund

Annual Conference

Apple hardware ecosystem

Job summary

Air Apps seeks a Backend QA Engineer to join our Lisbon-based onsite team, collaborating with engineers to ensure robust API behavior and data integrity. You will design and execute tests for backend systems, validate APIs with Postman or Swagger, and contribute to automated testing and code quality.

With 2–3 years of backend testing experience, you’ll review PRs, collaborate across disciplines, and help improve testing strategies while supporting a comprehensive benefits package.

Qualifications

• 2–3 years of backend testing or software development in test roles.
• Experience with Node.js and TypeScript in backend environments.
• Familiarity with SQL databases, especially PostgreSQL.
• Experience testing REST APIs with Postman or Swagger.
• Understanding of API testing, database testing and integration testing.
• Comfort reviewing pull requests and backend architecture changes to help ensure quality standards.
• Familiarity with test management tools such as TestRail is beneficial.

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 systems using 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 or similar systems.
• Work closely with developers and product teams to improve testing strategies and overall product quality.

Skills

Node.js

TypeScript

PostgreSQL

REST APIs

Postman

Swagger

Test automation

PR review

Tools

PostgreSQL

Swagger

Postman

Job description

Air Apps seeks a Backend QA Engineer to join our Lisbon-based onsite team, collaborating with engineers to ensure robust API behavior and data integrity. You will design and execute tests for backend systems, validate APIs with Postman or Swagger, and contribute to automated testing and code quality.

With 2–3 years of backend testing experience, you’ll review PRs, collaborate across disciplines, and help improve testing strategies while supporting a comprehensive benefits package.