Software Development Engineer in Test – SDET

Jobtailor; Deutschland; Vor Ort; EUR 70.000 - 90.000; Vollzeit

Zusammenfassung

Jobtailor seeks an experienced SDET to design, build and maintain scalable automated test frameworks from scratch. You will own Playwright-based testing in production-grade projects and drive CI/CD integration.

You will partner with DevOps and Engineering to ensure reliable test environments, own API testing with Postman, and contribute to QA standards across the organization.

Qualifikationen

• 5+ years of professional software testing or SDET experience.
• Proven ability to design test frameworks from scratch.
• Hands-on Playwright experience in production-grade projects.
• Proficiency in Python and API testing with Postman.
• Experience with .NET/C# applications in production.

Aufgaben

• Design, build, and maintain scalable automated test frameworks from scratch — not inherited or extended from existing suites
• Serve as the primary subject matter expert on test automation tools, techniques, and best practices across the engineering organization
• Establish architecture, folder structure, conventions, and shared patterns for the automation codebase
• Maintain test suites for reliability and maintainability as the platform evolves
• Integrate automated test suites into CI/CD pipelines (GitHub Actions, Azure DevOps, or equivalent) to support continuous delivery
• Design pipeline triggers, handle test parallelism and flakiness, and own reporting and alerting within the pipeline
• Identify gaps in current testing infrastructure and proactively propose and implement improvements
• Partner with DevOps and Engineering to ensure test execution environments are reliable and representative
• Partner with product managers and developers to integrate automation early in the SDLC, promoting a shift-left quality mindset
• Influence team QA practices through documentation, mentorship, and standards-setting — not just personal execution
• Review pull requests for testability and advocate for design choices that improve coverage and maintainability
• Stay current on emerging testing tools, frameworks, and industry trends

Kenntnisse

SDET experience

Playwright

Python

API testing

C# / .NET testing

CI/CD concepts

Tools

GitHub Actions

Azure DevOps

Postman

Jenkins

Jobbeschreibung

Responsibilities

• Design, build, and maintain scalable automated test frameworks from scratch — not inherited or extended from existing suites
• Serve as the primary subject matter expert on test automation tools, techniques, and best practices across the engineering organization
• Establish architecture, folder structure, conventions, and shared patterns for the automation codebase
• Maintain test suites for reliability and maintainability as the platform evolves
• Integrate automated test suites into CI/CD pipelines (GitHub Actions, Azure DevOps, or equivalent) to support continuous delivery
• Design pipeline triggers, handle test parallelism and flakiness, and own reporting and alerting within the pipeline
• Identify gaps in current testing infrastructure and proactively propose and implement improvements
• Partner with DevOps and Engineering to ensure test execution environments are reliable and representative
• Partner with product managers and developers to integrate automation early in the SDLC, promoting a shift-left quality mindset
• Influence team QA practices through documentation, mentorship, and standards-setting — not just personal execution
• Review pull requests for testability and advocate for design choices that improve coverage and maintainability
• Stay current on emerging testing tools, frameworks, and industry trends

Requirements

• 5+ years of professional software testing or SDET experience
• Demonstrable experience building test automation frameworks from scratch — not just using or maintaining inherited ones
• Hands‑on Playwright experience in a production‑grade project
• Python proficiency demonstrated through professional or open‑source work
• API testing ownership using Postman or equivalent — including contract testing, data‑driven tests, and CI integration
• CI/CD pipeline ownership — built or significantly extended a pipeline using GitHub Actions, Azure DevOps, Jenkins, or equivalent
• Experience testing .NET / C# applications in a production environment
• Experience with long‑lived production platforms — not just greenfield or short‑term contract work

Core Competencies

Demonstrates expertise in designing and building scalable automated test frameworks from scratch, with a strong focus on CI/CD integration and test automation best practices. Proficient in Python and Playwright, with a solid understanding of API testing and .NET applications.

Tools & Technologies

• GitHub Actions
• Azure DevOps
• Postman
• Jenkins