Senior Quality Assurance Engineer (Retail Media)

TL;DR

Senior Quality Assurance Engineer (QA Automation): Building and maintaining scalable automated test suites for a CPC bidding marketplace in the e-commerce domain with an accent on UI automation and network-layer mocking. Focus on developing testing infrastructure and mock layers to increase developer velocity and safeguard application stability.

Location: Hamburg, Germany

Salary: EUR 65,000 - 75,000 per year

Company

Fast-growing European e-commerce company operating at the intersection of fashion and technology.

What you will do

• Develop testing tools, configurations, and mock layers to enable engineers to write reliable tests.
• Design and maintain scalable automated test suites (E2E, integration, UI) to prevent regressions.
• Perform exploratory manual testing on new features to iteratively expand automation coverage.
• Collaborate with product managers and engineers to refine acceptance criteria and manage the bug lifecycle.

Requirements

• 5+ years of professional software quality assurance experience.
• Strong expertise in writing automated UI test suites using Playwright, Cypress, or similar frameworks.
• Proficiency in testing RESTful endpoints and network-layer mocking using tools like MSW or Postman.
• Experience with modern web stacks involving JavaScript, TypeScript, React, and PHP/Laravel.
• Fluent written and spoken English skills.
• University degree in Computer Science, Software Engineering, or equivalent practical experience.

Nice to have

• Experience leveraging Storybook components for visual regression or snapshot testing.
• Prior experience in eCommerce, retail tech, or ad-tech.

Culture & Benefits

• Flat hierarchies and direct communication culture.
• Ownership-driven environment with pragmatic decision-making and trust.
• Inclusive work environment focusing on acceptance and diversity.
• Team perks including team lunches, afterwork drinks, and company events.