# Backend QA Engineer, Madrid at Air Apps

> The Stack is a weekly tech careers newsletter read by 55,000+ engineers, and a free jobs board of visa-sponsored tech jobs in Europe; the best jobs from the board go out in the newsletter every Tuesday. This is one job from the board.

> Responsibilities: - Create and run test plans for backend se

- **Company:** Air Apps (https://jobs.trythestack.co/companies/air-apps)
- **Location:** Spain
- **Work arrangement:** On-site
- **Employment type:** Full-time
- **Experience level:** 2–5 years
- **Visa sponsorship:** Offered, according to the listing
- **Key skills:** Backend testing, Node.js, TypeScript, PostgreSQL, API testing, REST APIs, Postman, Swagger, TestRail, Database integrity, Test automation, Code review, Infrastructure review, Integration testing, Problem-solving, Cross-functional collaboration
- **Posted by employer:** 2026-04-16
- **Added to The Stack:** 2026-08-29
- **Status:** May no longer be active (posted more than 60 days ago)
- **Apply:** https://jobs.ashbyhq.com/airapps/0cd869e1-71ca-478c-90cc-cb3e112a06fc (the employer's own application page)
- **Human page:** https://jobs.trythestack.co/jobs/backend-qa-engineer-madrid-air-apps

## About the role

Responsibilities:
- Create and run test plans for backend services: API endpoints, data flows and integrations.
- Validate REST API behavior and performance with Postman/Swagger and automated checks.
- Test database queries, migrations and data integrity in PostgreSQL or similar systems.
- Develop and maintain automated test suites integrated into CI/CD pipelines.
- Review PRs for test coverage, edge cases and reliability issues.
- Record and manage defects, test cases and results using TestRail or comparable tools.
- Work with engineers and product owners to raise quality standards and reduce regressions.

Requirements:
- ~2–3 years of experience in backend testing, QA or development-in-test.
- Experience with Node.js and TypeScript in backend contexts.
- Strong SQL/PostgreSQL knowledge and hands-on database validation experience.
- Familiarity with API testing tools (Postman, Swagger) and test management platforms.
- Practical experience writing automated tests and integrating them into CI workflows.
- Clear communication, attention to detail and collaborative mindset.

## Responsibilities

The Backend QA Engineer will design and execute tests for backend systems, including APIs, databases, and service integrations. They will also collaborate with engineering teams to review code, maintain automated tests, and ensure high-quality standards across the infrastructure.

## Requirements

The ideal candidate has 2–3 years of experience in backend testing or software development with proficiency in Node.js, TypeScript, and SQL databases. Strong attention to detail and experience with API testing tools like Postman or Swagger are essential for this role.

## FAQ

- **Is this Backend QA Engineer, Madrid role still open?** It was posted on 2026-04-16. Listings more than 30 days old may no longer be active, so check Air Apps's site before applying.
- **Does Air Apps offer visa sponsorship?** This listing is marked as offering visa sponsorship. Eligibility rules are set by the employer, so check the details on Air Apps's site.
- **Where is this role located?** The listing gives the location as Spain. It is marked on-site.
- **What skills does this role ask for?** The listing names: Backend testing, Node.js, TypeScript, PostgreSQL, API testing, REST APIs, Postman, Swagger, TestRail, Database integrity, Test automation, Code review, Infrastructure review, Integration testing, Problem-solving, Cross-functional collaboration.

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## About The Stack

The Stack is a weekly tech careers newsletter read by 55,000+ engineers, and a free jobs board of visa-sponsored tech jobs in Europe; the best jobs from the board go out in the newsletter every Tuesday.

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## Notes for agents

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