Role & seniority: Senior Quality Assurance Engineer (m/f/d)

Stack/tools

Languages: JavaScript/TypeScript (or other OO languages)
Testing: automated end-to-end tests (Mocha/Playwright)
API: REST, OpenAPI/Swagger validation
CI: GitlabCI
Databases: relational and NoSQL (integration and data flows)

Top 3 responsibilities

Design, develop, and execute automated end-to-end tests; lead regression testing
Manage, prioritize, and reproduce bug reports; ensure defects are resolved to maintain stability of high-traffic features
Coordinate testing efforts across teams; advocate for product quality; contribute to long-term automation strategy

Must-have skills

4+ years QA/testing/debugging REST backend applications; strong HTTP knowledge
Proficiency in API validation against OpenAPI/Swagger
4+ years with JavaScript/TypeScript or OO languages; experience with Mocha/Playwright; GitlabCI
2+ years working with relational and NoSQL databases; focus on integration and data flows
Experience in agile environments; excellent English communication; solid understanding of transaction systems and large-scale DBs
Passion for maintainable test suites and continuous feedback

Nice-to-haves

Experience with gateways/transaction systems
Contribution to automation strategy and testing architecture
Additional language skills; familiarity with complex data workflows

Location & work type

Onsite in Hamburg or Berlin
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Full Description

Job Description We are currently looking for a skilled Senior Quality Assurance Engineer (m/f/d) to join the Checkout Unit onsite in Hamburg or Berlin.

What you will do

Focus on the design, development, and execution of automated end-to-end tests
Manage and prioritize bug reports, keeping their business value in mind
Lead regression testing, identify and resolve defects to ensure the stability of high-traffic customer interactions and transactions
Analyze complex workflows, data flows, and database interactions to identify potential areas for improvement in test coverage and performance
Report bugs and reproduce them throughout the complete bug cycle
Coordinate testing efforts to ensure the delivery of quality features
Advocate for product quality within cross-functional teams
Contribute to ABOUT YOU’s long-term automation strategy in testing

Who you are

4+ years of experience in QA, testing, and debugging REST backend applications, with strong knowledge of HTTP methods, status codes, headers, and error handling
Proficient in API validation against OpenAPI/Swagger specifications
4+ years of experience with JavaScript/TypeScript or other OOP languages, using frameworks like Mocha/Playwright, and GitlabCI
2+ years of experience working with relational and NoSQL databases, focusing on integration and data flows
Passionate about automation and building maintainable test suites that provide continuous feedback, with strong skills in both exploratory and automated testing
Experienced with agile methodologies
Excellent communication skills, including fluent written and spoken English for clear collaboration
Solid understanding of transaction systems, gateways, customer data, and large-scale database structures
Committed to identifying and addressing issues early, ensuring high-quality customer-facing features and services

Benefits

Hybrid working
Fresh fruit every day
Sports courses
Free access to code.talks
Exclusive employee discounts
Free drinks
Language courses
Laracast account for free
Company parties
Help in the relocation process
Mobility subsidy
State-of-the-art technology
Central Location
Flexible Working Hours
Company pension
Professional training
Dog-friendly office

Senior Quality Assurance Engineer (m/f/d) - Checkout - Onsite in Hamburg or Berlin