Senior Backend Engineer (C#/.Net) (m/f/d)

We are looking for a

Senior Backend Engineer (C#/.Net) (m/f/d)

Join our team at our location in Stockholm or Tallinn – hybrid working conditions available.

Our solutions contribute to flexible and customer-friendly payment alternatives. We offer consumers the opportunity to choose when and how they want to pay, whilst guaranteeing a steady and predictable cashflow for merchants. Our products make us proud, but not content and we have high ambitions for our existing as well as upcoming products. We have a strong commitment to building the future of FinTech — human-centric and sustainable. With investments to back it up. You will be part of a new and quickly growing product & tech organisation, having the opportunity to shape our new teams as well as build the next revolutionary products.

You will join one of our product teams and on a daily basis:

• Design, develop, test, and ship robust, maintainable, and readable software, applications, APIs, and other workflows
• Initiate, participate in, and communicate technical architecture designs
• Attend regular scrum ceremonies as a member of an agile cross-functional team
• Analyze, discuss, and implement business requirements while maintaining good documentation of the systems and components you create
• Bring in industry standards and best practices to continually improve our codebase and architecture
• Make a positive impact on our engineering culture by adopting, implementing, and providing feedback on both organisational and industry standards and practices

What you bring:

• Hands-on experience with C# and the .NET framework, with a minimum of 5 years of experience
• Experience in developing, shipping, and maintaining cloud-based applications
• Good knowledge and experience working with microservices and distributed architectures
• A deep understanding and knowledge of RESTful APIs
• Years of experience using relational databases, preferably SQL Server. Additionally, working knowledge of ORMs, preferably Entity Framework
• Familiarity with cloud development; experience with Azure is a bonus
• Practical knowledge of using messaging platforms in a distributed architecture (e.g., RabbitMQ, Kafka)
• Knowledge and experience on a FinTech and banking industry is a plus
• Hands-on experience with AI-assisted development tools such as Claude, Cursor, or GitHub Copilot, and sound judgement about reviewing and testing what they produce, is a plus
• Fluent English

Please note: you need to have EU citizenship or a valid work permit for Sweden.

About the technologies we use:

Our teams have autonomy when it comes to tech choices. The example below will give you some insights, and we are looking forward to discussing this further with you.

All solutions developed cloud-native targeting Azure - Infrastructure defined using Terraform - Services deployed to Kubernetes clusters by default - A growing microservice ecosystem with event-based integration - Using latest .NET Core - RESTful API design - Single-page frontend apps served by CDN - Frontend tech using TypeScript, often Angular or standard Web Components (Stencil) - Automated tests in each layer.

Disclosure requirements pertaining to the collection of your personal data:

Responsible for processing the information provided in your application is the company specified in the job advertisement, with its registered office as indicated. The company processes your data for the purpose of establishing an employment relationship on the basis of Art. 6 (1) b GDPR / Section 26 (1) sentence 1 BDSG.

The retention period for your data is determined by the statutory time limits applicable in the respective country, beginning upon completion of the recruitment process. You can find these here.

You can contact the company’s Data Protection Officer at the above-mentioned postal address.

Further information on data protection and your rights can be found here.

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