Software Development Engineer In Test - Card Processing

2 weeks agoLondon, United Kingdom


We're building the connected finance businesses deserve. Unleashing them with tomorrow's technology, today. Our flexible payments solutions help global enterprises - like Samsung, Deliveroo and Adidas - launch new products and create experiences customers love. And it's not just what we build that makes us different. It's how.

We liberate smart, passionate people to collaborate, innovate and do their best work - faster. That's why we're one of the most valuable fintech firms around. But we're just getting started. By cutting through financial complexity, we'll empower companies to change the world. Join us. Unlock your potential.

Build tomorrow, today.

About the role

As a Software Development Engineer In Test, you will work against a predefined test strategy for your product and make a significant contribution towards scripting tests using a modern and cutting edge automation framework.

Your natural problem-solving skills, inquisitive mind and attention to detail will contribute towards a strong culture of quality across the organisation and have a significant impact on the service we provide.

About the Product

Card Processing is at the core of the payment journey for all merchants processing through's gateway. As a critical part of the payment processing flow, downtime, errors, and delays in processing directly translate into lost revenue for our merchants. Because of this, performance, reliability, scalability, and observability are the development principles that the team lives by. The Card Processing team is also responsible for all features related to scheme compliance, global expansion and third party acquirers.

About You

    • 3+ years of professional experience within e-commerce or fin-tech
    • Good experience working within a fast-paced Agile team
    • Excellent fault finding, debugging and diagnostic skills
    • Solid understanding of micro-services
    • Familiar with REST API and Web GUI testing
    • Experience writing automated API tests in any language, ideally JavaScript or TypeScript
    • Experience using clients like POSTMAN and Swagger
    • Comfortable using SQL with an understanding of databases
    • Comfortable using continuous integration tools like TeamCity and Jenkins
    • Extremely organised and methodical whilst remaining pragmatic
    • Confident collaborating with technical and non-technical stakeholders

What you will be doing
    • Make an active contribution to all Agile rituals (standups, retros, planning, etc)
    • Contribute towards testability in order to influence application design for effective testing
    • Author detailed test plans and supporting technical documentation
    • Analyse complex business requirements and consistently provide constructive feedback
    • Effectively collaborates to accurately understand the application under test
    • Proactively engage with all stakeholders to close gaps in requirements
    • Define and record test cases using the Gherkin language format
    • Debug, record and manage defects throughout their lifecycle
    • Track quality metrics and generate reports for stakeholders
    • Consistently execute REST API tests manually using POSTMAN
    • Author new and update existing automated API acceptance tests in JavaScript and TypeScript
    • Contribute towards the wider QA community to facilitate knowledge sharing


What we stand for

At, everything starts with our values, including the experience we offer our people.


We supercharge your professional growth with career development programs and leadership training. You can learn your way, with tailored pathways and online platforms. And be inspired at relevant conferences.


We don't stop at 'good' here. We strive for excellence amongst our teams every day and recognize colleagues who take it to the next level through our quarterly peer-nominated Hero awards.


We're proud of our global connections and inclusive environment. So we champion this through our colleague-led community groups and celebrate many cultural events together.

Want to see us in action?

Take a peek inside here.

More about

We empower businesses to adapt, innovate and thrive with the connected payments they deserve. Our technology makes payments seamless. We provide the fastest, most reliable payments in more than 150 currencies, with in-country acquiring, world-class fraud filters and reporting, through one API. And we can accept all major international credit and debit cards, as well as popular alternative and local payment methods. launched in 2012, and we now have a team of 1000 people across 17 international offices. To date, we've raised a total of $830 million, with our recent Series C valuing us at $15 billion.

We believe in equal opportunities is an equal opportunities employer. We welcome applications from all members of society irrespective of age, sex, disability, sexual orientation, race, religion, or belief. We make recruiting decisions based on your experience, skills and personality. We believe that employing a diverse workforce is the right thing to do and is central to our success.

Job ID: checkout-d3a66607-9d4a-497d-abd2-313f0d0f5847