• Defining test strategies, designing detailed test plans, and creating automation frameworks to validate next-generation routing platforms. • Resolving software automation and verification challenges in a multi-vendor routing and switching environment. • Collaborating with Network Engineering and Network Architecture teams to develop expertise in large-scale testing of routing protocols. • Conducting thorough end-to-end functional validation for routing services, emphasizing BGP daemons, advanced networking technologies, and core protocols. • Developing, deploying, and maintaining scalable automation frameworks, reusable libraries, fixtures, and tests, while integrating test suites into CI/CD pipelines. • Conducting performance, stress, scalability, and resiliency testing with traffic generators, simulating internet-scale routing, high-throughput traffic, route changes, and failover scenarios. • Conducting thorough root cause analysis of protocol state machine failures, routing anomalies, convergence issues, and system-level regressions to enhance software reliability. • Contributing to test strategies, enhancing automation coverage, refining testing methods, and reviewing architecture and design to ensure thorough validation.

• Build API and integration test coverage for Java/Spring routers and database workflows. • Design and implement Playwright E2E tests for critical user journeys. • Create stable mocking and fixture strategies (MSW, test fixtures, seeded test data). • Set up CI quality gates for linting, unit/integration/E2E tests, coverage, and reporting. • Expand coverage to untested UI and workflow areas and prevent regressions. • Build an LLM evaluation discipline with golden datasets and measurable quality gates. • Track model output reliability, detect drift, and gate releases on quality/stability thresholds. • Improve test maintainability, remove flakiness, and optimize runtime. • Use LangChain4j for JVM-native LLM application support, including agents, RAG, and guardrails. • Use Langfuse Java SDK and OpenTelemetry for trace capture, prompt/version tracking, and experiment comparison. • Use the OpenAI Java SDK for structured outputs, function calling, webhook verification, and response validation. • Use Promptfoo in CI when you need language-agnostic regression and red-team checks around the Java stack. • Use Java schema validation and guardrail patterns with Jackson, Swagger annotations, and LangChain4j guardrails. • Use OpenTelemetry-based traces and Langfuse datasets as the reproducible source of truth for release gates.

• Establish and maintain automated frontend testing. • Build API and integration test coverage for routers and database flows. • Design and implement E2E tests with Playwright for critical user flows. • Create stable mocking and fixture strategies (MSW, pytest fixtures, predefined test data). • Configure quality gates in CI for linting, unit/integration/E2E tests, code coverage, and reporting. • Extend coverage into non-test UI and workflow areas and prevent regressions. • Build an LLM evaluation discipline with golden datasets and measurable quality gates. • Track reliability of model outputs, detect drift, and condition releases on quality/stability thresholds. • Improve test maintainability, eliminate flakiness, and optimize runtimes.

Role Description Our client operates within the food manufacturing and direct distribution sector, with a strong specialization in frozen and ice products. The company’s core business model focuses on delivering these products directly to end consumers across multiple European countries, ensuring a seamless and efficient distribution process. The project focuses on developing a Point of Sales solution for drivers, enabling seamless, mobile-friendly processing of customer orders, payments, and deliveries directly from the field. We are looking for a colleague responsible for designing, implementing, and maintaining automated test suites using Selenium and REST Assured, ensuring high-quality delivery across web applications and APIs through reliable, scalable test automation. Responsibilities - Shape and lead automation strategy: - Define and implement scalable automation practices aligned with the overall test strategy. - Build and maintain test automation: - Design, develop, and maintain Selenium WebDriver scripts and test plans to ensure early defect detection and broad coverage. - Optimize frameworks and execution: - Enhance automation frameworks for performance and manage Selenium Grid and parallel execution for faster test cycles. - Integrate with CI/CD: - Embed automated tests into CI/CD pipelines to ensure continuous quality and faster feedback loops. - Collaborate across teams: - Work closely with QA, developers, product teams, and stakeholders to resolve defects and align testing with business goals. - Mentor and support: - Guide junior and mid-level QA engineers, participate in code reviews, and share best practices to promote learning and consistency. - Report and improve: - Generate test metrics, analyze results, and contribute to ongoing improvements in quality processes and tools. Qualifications - 5+ years of experience in Automation Test Engineering - Proven expertise in Selenium WebDriver and a programming language such as Java - Background in BDD frameworks such as Cucumber or CodeceptJS - Exposure to mobile test automation using frameworks like Appium - Solid knowledge of QA methodologies, Agile/Scrum practices, and test management tools (e.g., Jira, Confluence, TestRail) - Experience with version control (Git) and CI/CD tools (e.g., Jenkins, Azure DevOps, GitHub Actions) - Strong problem-solving and debugging skills for diagnosing test failures and enhancing test coverage - Excellent communication and collaboration skills in cross-functional environments - Regular use of AI tools to improve productivity, automate or reduce repetitive work, support decision-making, and deliver higher-quality outcomes - Ability to use AI tools responsibly by structuring effective prompts, critically validating outputs, understanding limitations, and taking ownership of the final result Requirements - Experience with performance and accessibility testing tools and methodologies (e.g., JMeter, Locust) - Hands-on experience with API testing tools like Postman or REST Assured - German language skills Benefits - Enjoy our holistic benefits program that covers the four pillars that we believe come together to support our wellbeing, covering social, physical, emotional wellbeing, as well as work-life fusion. - Physical Wellbeing: Our wellbeing program includes medical benefits, gym support, and personalised fitness options for an active lifestyle, complemented by team events and the Healthy Habits Club. - Work-Life Fusion: In very dynamic industries such as IT, the line between our professional and personal lives can quickly become blurred. Having a one-size-fits-one approach gives us the flexibility to define the work-life dynamic that works for us. - Emotional Wellbeing: We believe that to maintain our overall health, we need to invest in our mental wellbeing just as much as we do in our physical health, social connections or in achieving work-life balance. - Social Wellbeing: As a growing community in a hybrid environment, we want to ensure we remain connected not just by the great work we do every day but through our passions and interests.