# Backend QA Engineer 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: - Design and execute test plans for backen

- **Company:** Air Apps (https://jobs.trythestack.co/companies/air-apps)
- **Location:** Copenhagen, Denmark
- **Work arrangement:** Remote
- **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, Postman, Swagger, TestRail, Database testing, Integration testing, Automation, Code review, Infrastructure review, Quality assurance, SQL
- **Posted by employer:** 2026-04-28
- **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/62730403-3484-4c55-9807-43089979bf08 (the employer's own application page)
- **Human page:** https://jobs.trythestack.co/jobs/backend-qa-engineer-air-apps

## About the role

Responsibilities:
- Design and execute test plans for backend systems: APIs, services and database interactions.
- Validate REST/GraphQL APIs using Postman, Swagger or similar tools; verify contracts and error handling.
- Test database queries, migrations and data integrity on PostgreSQL (SQL validation, edge cases, performance).
- Create and maintain automated test suites for integration and regression testing.
- Review pull requests for test coverage and collaborate with engineers on defect triage.
- Document and track test cases, results and defects using TestRail or equivalent test management tools.
- Participate in performance and reliability testing; contribute to infrastructure review and stability improvements.

Requirements:
- ~2–3 years experience in backend testing, QA or development-in-test roles.
- Hands-on with Node.js and TypeScript in backend contexts.
- Practical SQL skills and experience with PostgreSQL or similar relational DBs.
- Familiarity with API testing tools (Postman, Swagger) and automation frameworks.
- Experience with test management tools (TestRail) and CI/CD test integration.
- Attention to detail, good communication skills and experience collaborating with engineers to raise quality standards.

## 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 pull requests and maintain high-quality standards across the infrastructure.

## Requirements

Candidates should have approximately 2–3 years of experience in backend testing or software development roles. Proficiency in Node.js, TypeScript, and SQL databases like PostgreSQL is required, along with experience using API testing tools.

## FAQ

- **Is this Backend QA Engineer role still open?** It was posted on 2026-04-28. 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 Copenhagen, Denmark. It is marked remote.
- **What skills does this role ask for?** The listing names: Backend testing, Node.js, TypeScript, PostgreSQL, API testing, Postman, Swagger, TestRail, Database testing, Integration testing, Automation, Code review, Infrastructure review, Quality assurance, SQL.

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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

- Apply on the employer's page (https://jobs.ashbyhq.com/airapps/62730403-3484-4c55-9807-43089979bf08). The Stack does not take applications.
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- Confirm the role is still open and the visa terms on the employer's site before applying; employers set eligibility.
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