Software Engineer - Web (Middleware)

Technology – Software Engineering
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 2019, we raised $230m in what is Europe’s largest ever fintech Series A round, and globally the third largest fintech Series A round of all time. This fundraising round gave us a valuation of around $2 billion.

About the role is actively looking for a talented Full Stack Developer responsible for maintenance, development, and integration of features for a brand new Middleware within Checkout's online payment platform.  The Javascript Developer will be a key player in building the future of how merchants will integrate with us, leveraging the latest technologies. This developer will have the opportunity to work on brand new projects for and contribute to disruptive solutions in the industry. 

Equally, the successful candidate will have the opportunity to collaborate closely with various cross-functional teams among Software development, integration and support to proactively contribute towards improving the user experience. The ideal candidate has the willingness to join a flat hierarchy environment with short decision paths and the ability to work independently, take initiative, and contribute to new ideas required in a diverse, fast-paced, deadline-driven team.

Key Responsibilities

    • Developing new features and maintain previously developed features
    • Estimating integration plan and complexity of integrations
    • Extending internal behavioral testing framework
    • Partnering with Support, Sales, and Software Development to resolve issues that arise during merchant trials, integrations, or post-implementation support
    • Advise management on support issues which impact customer satisfaction and provide recommendations for appropriate actions
    • Contribute and adhere to coding standards, best practices, and procedures

About You

    • 2+ years’ experience with 3rd party services and API integration development
    • Excellent Javascript & Node.js skills
    • Previous experience creating payment modules and/or integrating PSP services appreciated
    • Knowledge of shopping carts (e.g. Magento, WooCommerce) is a plus
    • Excellent problem solving and organizational skills
    • Fluency in English

Nice to have

    • Typescript experience 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