(Senior) QA Engineer - Backend (x/f/m)

DKB Code Factory; Berlin; On-site; EUR 65,000 - 90,000; Full time

Job summary

DKB Code Factory GmbH in Berlin is seeking a QA Automation Engineer to help shape our testing approach across backend services. You'll work with CoFa and DKB teams to build robust automated tests for APIs and microservices, ensuring scalable coverage.

You bring Java expertise, Serenity BDD experience, and a passion for reliable delivery. German and English communication skills at B2 level or higher are expected, with close collaboration across engineering and product teams.

Qualifications

• Degree in a STEM field or equivalent practical experience.
• Solid experience in test automation and maintainable test architectures.
• Programming experience with Java and readable test code; Serenity BDD is a plus.

Responsibilities

• You work with developers and product teams to develop a suitable testing strategy for our backend systems and ensure sensible test coverage across different testing levels.
• You design, implement, and maintain automated tests for our APIs and microservices, ensuring that our test automation remains stable and maintainable as complexity grows.
• You decide which tests make sense at the unit, API/integration, or end-to-end level, and help avoid duplication between testing levels.
• You integrate automated tests into our CI/CD pipelines, analyze test results, and help identify errors and quality risks early in the development process.
• You analyze and debug failed and unstable tests, and continuously improve existing test frameworks and processes.
• You actively contribute to our quality engineering efforts, identify quality risks with the team, and decide where test automation adds real value.
• You work closely with developers, product owners, business teams, and other QA engineers, making quality a shared part of product development.

Skills

Java

Test automation

APIs and microservices

CI/CD pipelines

German and English (B2)

Education

STEM degree or equivalent

Tools

Serenity BDD

Apache Kafka

Job description

We’reexcited to share that our hiring process is now led by Code Factory (CoFa), DKB’s sister tech company, bringing a more agile and collaborative approach to building our cross-functional teams. Whileyou’llgo through the hiring journey withCoFa, your employment will be with DKB, combining the stability of a leading bank with the speed and innovation of a tech-driven environment. Join us to be part of a team where collaboration and impact come first.

{ your_responsibilities : [

• You work with developers and product teams to develop a suitable testing strategy for our backend systems and ensure sensible test coverage across different testing levels.
• You design, implement, and maintain automated tests for our APIs and microservices, ensuring that our test automation remains stable and maintainable as complexity grows.
• You decide which tests make sense at the unit, API/integration, or end-to-end level, and help avoid duplication between testing levels.
• You integrate automated tests into our CI/CD pipelines, analyze test results, and help identify errors and quality risks early in the development process.
• You analyze and debug failed and unstable tests, and continuously improve existing test frameworks and processes.
• You actively contribute to our quality engineering efforts, identify quality risks with the team, and decide where test automation adds real value.
• You work closely with developers, product owners, business teams, and other QA engineers, making quality a shared part of product development.

{ following_qualifications_would_be_in_line_with_our_desired_profile_for_this_position: [

• You have a completed degree in a STEM field, equivalent training, or relevant practical experience in software development or quality assurance.
• You have solid experience in test automation and can structure it to remain maintainable, reliable, and scalable over the long term.
• You have practical programming experience with Java and write readable, maintainable test code. Experience with Serenity BDD is a plus; alternatively, you’re willing to learn it.
• You’re familiar with testing APIs and microservices and have a good understanding of distributed backend systems and synchronous and asynchronous communication.
• You’re familiar with the fundamentals of event-driven architectures; ideally, you’ve already worked with Apache Kafka or similar technologies.
• You have experience with CI/CD pipelines and understand how automated tests are integrated into the development and delivery process.
• To you, quality means more than running test cases: you identify risks, question existing test coverage, and contribute ideas to improve our testing strategy and automation.
• You work independently, in an organized and solution-oriented way, and enjoy learning about new technologies and subject areas.
• You communicate technical and quality-related topics confidently with different stakeholders and adapt the level of detail to your audience.
• Confident communication in German and English, ideally at B2 level or above

By the way: At our company, every person matters. We embrace fairness and diversity—no matter where you’re from, how old you are, or your sex, gender identity, sexual orientation, or religion, whether you have a disability or not—we genuinely look forward to every application!