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Job Information

MasterCard Senior Backend Developer in Copenhagen, Denmark

Our Purpose

We work to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart and accessible. Using secure data and networks, partnerships and passion, our innovations and solutions help individuals, financial institutions, governments and businesses realize their greatest potential. Our decency quotient, or DQ, drives our culture and everything we do inside and outside of our company. We cultivate a culture of inclusion ( for all employees that respects their individual strengths, views, and experiences. We believe that our differences enable us to be a better team – one that makes better decisions, drives innovation and delivers better business results.

Job Title

Senior Backend Developer

About the role

Join the team at Aiia - Mastercard, a leading European open banking technology provider offering a direct connection to banks through a single API, allowing its customers to develop and launch new digital solutions

Our award-winning infrastructure delivers a simple, easy-to-use API with high-quality bank connectivity, enabling companies in three segments: banking, accounting, and payments.

As we grow over the coming years, we plan to expand our solution to the rest of Europe and develop new products to offer value-added services on top of our open banking network.

We’re product people in a financial world who build cut-to-the-bone, frictionless, and highly effective products. We’re constantly improving and growing as a company and as individuals, and we welcome a positive can-do attitude and thinking outside the box in any form. We believe that people thrive when they get to express their creativity and deliver results, and we respect that no fixed time slot for creative work exists.

Connect Platform Squad

The Connect platform is the core of Aiia Open Banking, delivering the best user experience for our users to connect their banks with services. The team is responsible for creating the next generation connect platform that will allow us to scale beyond the Nordics to Europe.

With Open Banking from Aiia, all companies get access to a simple unified API for all banks in Northern Europe. Aiia Open banking is a regulatory compliant API for both accessing account information and initiating payments. With the API any company can build innovative PSD2 solutions now.


● Build the software for end-users to manage bank connections and data shared with services, including consents

● You’ll utilise frontier open banking technologies developed in-house for bank account aggregation, financial data and payments to build seamless end-user experiences

● Have, as part of the squad, full ownership of the applications you build, from development to operating them in production

● Groom requirements with the squad and plan out technical tasks to deliver on those requirements

● Work closely with the squad, doing pair-programming and code-reviews, to ensure the team constantly delivers working software to the standards we expect

● Daily operations, assisting with customer support, fixing bugs and issues

● Closely monitor and improve the quality of our applications, ensuring they live up to our quality standards and SLAs

About you

● You have experience working on challenging technical projects

● You have a good and up-to-date understanding of modern and scalable web development

● You have released at least one app – web or native – or have a project in the works that you can tell us about

● Knowledgable of frontend-technologies, at least one of the big UI frameworks (React/Angular/Vue…), as well as HTML, JavaScript and CSS

● You understand the power of data and the importance of continuous tracking and evaluation

● You have a great understanding of user experience, and how users will interact with our products

● You work well with product managers and designers and can be a key part of defining our solutions

● A university degree in computer science or a related field

● Good verbal and written communication skills (English)

● You are able to scope the size and feasibility of projects of all sizes.

COVID-19 Considerations

We value the safety of each member of our community because we know we’re all in this together. In many locations, which may change over time, we’ve implemented a virtual hiring process and continue to interview candidates by video or phone. In addition, in some locations, only individuals who have been fully vaccinated will be permitted inside Mastercard offices until further notice.

In the US, Mastercard is a government contractor, which may legally require most Mastercard employees to be vaccinated unless a verified approved medical or religious exemption is granted. Further, we are currently making every effort towards having employees return to work in the office 2 days per week, if that makes sense for their team. Everyone must be vaccinated to enter Mastercard offices at this time. Therefore, we expect all candidates to be vaccinated or to be approved for a medical or religious accommodation prior to commencing work at Mastercard.

Corporate Security Responsibility

All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:

  • Abide by Mastercard’s security policies and practices;

  • Ensure the confidentiality and integrity of the information being accessed;

  • Report any suspected information security violation or breach, and

  • Complete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.

Requisition ID: R-157068