Software Developer in Test - Authentication

London /
Technology – Quality Assurance /
Permanent Full-time
About us

Launched in 2012, is a leading international provider of online payment solutions. is built on 100% proprietary technology and handles every part of the payment process, providing complete transparency across the entire payment value chain.

We currently process 150+ currencies and offer access to all international cards and popular local payment methods to merchants through one integration.

Customers in our portfolio include international businesses like Samsung, Transferwise, Hopper, Virgin and Adidas. Our mission is to partner with smart businesses to optimise their payments, increase revenue and meet the dynamic needs of their customers. 

We are building a unique work environment where our people aspire to solve complex problems and deliver valuable solutions. We believe that excellence can be achieved through a dynamic culture driven by collaboration and teamwork.

In May 2020, we completed a $150m Series B funding round, tripling our valuation to $5.5bn.

About the role 

As a Software Developer 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

The Core Payments Product Group is focused on building solutions that compliment and revolutionize the transaction processing for merchants and cardholders. The Card Scheme Authentication and Disputes products are designed to help merchants reduce risk and cost of processing card transactions and provide more flexible integration options that increase security and reliability.

The team is responsible for building products and monitoring of the real-time authentication processing, scheme tokenization, transaction inquiries to prevent disputes, and pricing of transactions. At the heart of our development process are performance, reliability, scalability, visibility and innovation of payments going through’s Gateway.

About You

    • 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, 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

Key Responsibilities

    • 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
We are always looking for great people so if you don’t see a role here that fits you but you want to work with us, please send us your CV and a cover letter explaining the kind of role you are searching for and we will contact you. is an equal opportunities employer. We believe passionately that employing a diverse workforce is central to our success. We make recruiting decisions based on your experience, skills and personality. We welcome applications from all members of society irrespective of age, sex, disability, sexual orientation, race, religion or belief. Due to the numerous amount of application received, only the ones corresponding to this job profile will be contacted. If you have not been contacted within 3 weeks please deem your application as unsuccessful.

We are committed to protecting and respecting your privacy. We will only process and retain your information as necessary for the purposes of progressing your application or as required by applicable laws and regulations. We may also collect personal information about you through the application and recruitment process, either directly from you or from third-parties (employment agencies, recruitment websites, former employers, credit reference agencies or other background check agencies). In limited circumstances, we may transfer your information to the following countries outside the EU, while making sure your personal data is treated with the same level of protection offered in the EU. Please refer to our Privacy Policy ( for further information about how your data is being collected, processed and retained at