Backend QA Engineer, Berlin at Air Apps
May no longer be active — verify on the employer site
At a glance
- Company
- Air Apps
- Location
- Germany
- Work arrangement
- On-site
- Employment type
- Full-time
- Experience
- 2–5 years
- Working hours
- 40 hours
- Visa sponsorship
- Offered, according to the listing
- Posted
- Added to The Stack
✨ The Stack take on this Air Apps job
- 🏢 Air Apps has 73 jobs here, 73 with visa sponsorship see all
- 🛂 Visa: EU Blue Card. Minimum salary: €50,700 a year guide
- 💡 No salary shown. Ask Air Apps if it is above the minimum.
Updated 2026-11-05, from our data and official sources.
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About the role
Responsibilities:
- Design and execute test plans for backend systems: APIs, services, and database interactions.
- Validate REST APIs (functionality and performance) using Postman, Swagger or similar tools.
- Verify database operations, queries, and data integrity for PostgreSQL-backed systems.
- Develop and maintain automated backend tests and integration suites.
- Review pull requests to ensure test coverage and enforce quality standards.
- Participate in infrastructure reviews to detect reliability and performance risks.
- Document test cases, defects, and results using TestRail or equivalent.
Requirements:
- ~2–3 years in backend testing or development-in-test roles.
- Practical experience with Node.js and TypeScript in server environments.
- Strong SQL skills and hands-on PostgreSQL experience for validating data integrity.
- Familiarity with API testing tools (Postman, Swagger) and test automation frameworks.
- Experience with integration and performance testing practices.
- Comfortable reviewing code and infrastructure changes with engineers.
- Good problem-solving, communication skills, and willingness to work onsite in Lisbon (relocation support available).
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
The ideal candidate has 2–3 years of experience with backend technologies, specifically Node.js and TypeScript. Proficiency in SQL databases, REST API testing tools, and a strong understanding of backend testing practices are required.
Key skills
- Backend testing — in 24 other listings on The Stack
- Node.js — in 172 other listings on The Stack
- TypeScript — in 467 other listings on The Stack
- PostgreSQL — in 296 other listings on The Stack
- API testing — in 45 other listings on The Stack
- Postman — in 37 other listings on The Stack
- Swagger — in 11 other listings on The Stack
- Test automation — in 87 other listings on The Stack
- Database integrity
- Integration testing
- TestRail
- Code review
- Infrastructure review
- Quality assurance
- Problem-solving
Relocation terms mentioned in this listing
- relocation support
Quoted from the listing's text; confirm the details with Air Apps.
On The Stack (as of 2026-11-05)
Frequently asked questions about Air Apps
Is this Backend QA Engineer, Berlin 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 Germany. It is marked on-site.
What skills does this role ask for?
The listing names: Backend testing, Node.js, TypeScript, PostgreSQL, API testing, Postman, Swagger, Test automation, Database integrity, Integration testing, TestRail, Code review, Infrastructure review, Quality assurance, Problem-solving.