Senior QA Engineer

About Payrails

Payrails is a global payment software company helping leading enterprises to take control of their payment operations and maximize performance. With deep experience in the payments space and firsthand knowledge of merchants\‘ challenges, we’ve seen how fragmented, complex, and inefficient these systems can become. Now, we are setting a new industry standard for how enterprises around the world manage and optimize payments, with more control, visibility and flexibility than ever before.

Our vision is to reimagine payments from the ground up. We are building a deeply integrated meta layer that spans the entire payment lifecycle with a modular architecture. This helps us give leading brands building blocks to craft solutions to most complex operational challenges, tailor seamless customer experiences and grow their business.

We are backed by some of the world’s top investors including Andreessen Horowitz , HV Capital , EQT Ventures and General Catalyst , who share our mission to simplify payment complexity globally.

At Payrails, we’re committed to building a team of exceptional people – not just talented, but driven to build, solve, and deliver at the highest level. Excellence isn’t just a value here; it’s a way of working. We believe that great people thrive in environments where there’s trust, clarity, and shared purpose. We work openly and collaboratively, with deep respect for each other’s craft. Everyone is encouraged to understand the bigger picture – what we’re building, why it matters, and what stands in the way. When people have that context, they move faster, take ownership, and make better decisions. We care about creating a culture where people feel inspired to do their best work and a deep sense of responsibility to help us bring our vision to life. Success at Payrails means staying focused on the problems that matter most, and executing with purpose.

Your team

Payrails is a true tech company: our Product is designed by engineers for engineers. We believe in quality before delivery: our mission is to provide an outstanding Payment experience with a strong eye on automation, resilience, and scalability. Our engineering culture is focused on 3 main pillars:

• We aim for operational excellence

• We promote open communication and quick feedback

• We share knowledge and learn continuously

Our Tech team offers you the chance to work alongside a group of highly ambitious and knowledgeable Engineers while being faced with highly complex problems that affect customers on a global scale.

Our Tech Stack

• Backend: Go

• Frontend: Angular

• Testing: Playwright (Typescript), Jest, Go testing framework

• CI/CD: GitHub Actions

• Infrastructure: AWS, Kubernetes, Terraform

How you will make an impact

• Own and implement the end-to-end quality strategy for onboarding new payment service providers (PSPs) and other third-party partners.

• Design and build robust automation frameworks to ensure new integrations are reliable, performant, and delivered at speed.

• Serve as the quality advocate within the integrations team, driving a shift-left culture and ensuring quality is built-in from the start.

• Mitigate business risk by preventing integration-related production incidents and ensuring a seamless experience for our merchants.

• Directly support our company\’s strategic goals for system uptime and rapid ecosystem growth.

What we are looking for

• Ability to define and own the end-to-end quality strategy for new integrations.

• Proven expertise in building and maintaining robust test automation frameworks to support continuous delivery.

• Deep understanding of the full testing pyramid, including unit, integration, and end-to-end (E2E) testing.

• Experienced in integrating automated testing into CI/CD pipelines, such as GitHub Actions.

• Strong communication skills, actively promoting a shift-left testing culture across teams.

• Pragmatic decision-maker who effectively balances software quality with delivery speed.

• Comfortable and successful working within agile, embedded, cross-functional teams.

Bonus Points (Nice-to-Haves)

• Proficiency in Go.

• Experience in performance or security testing.

• Background in the payments or fintech domain.

• Experience mentoring other engineers on testing best practices.

• Comfortable navigating ambiguity and evolving requirements.

What we offer

• High impact and high velocity environment with the most talented and ambitious people you will ever work with

• A chance to shape the story of a company and a category from the ground up

• Real ownership. You’ll have the freedom and trust to build, test, and take lead

• A product used by the best brands around the world

• Visa and relocation support for you and your family where required

• Hybrid working with an office in the heart of Berlin

• Regular team events, activities and off-sites

• Discounted Urban Sports Club membership

• Competitive salary and equity package

• 27 days of annual paid vacation

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