Must have

• C#

• Java

• .NET

• API

• Security

• Cloud

• Testing

• Polish (Fluent)

• English (B2)

Requirements description

• Strong experience in building backend services (Java + .Net).
• Approximately 6 years of relevant experience in C# programming.
• Solid knowledge in Java programming.
• Solid understanding of API design, distributed systems, cloud environments.
• Experience in establishing bank connections through PSD2 interfaces.
• Ability to write clean, maintainable, and testable code.
• Experience working in fast-paced, product-centric environments.
• Collaborative mindset and eagerness to work closely with product and engineering peers.
• Proficiency in English, fluent Polish.
• Hybrid work 2-3 days per week (Gdansk).

Offer description

Join an international technology team building next-generation open banking solutions used across Europe. Our platform enables secure, reliable, and high-quality connectivity to financial institutions—powering innovative products and services in the digital payments ecosystem.

You will work in a highly skilled, collaborative environment alongside teammates located mainly in Denmark, Ireland, and Romania.

As a .NET Developer, you will contribute to the development, improvement, and maintenance of a large-scale open banking platform. You will work on advanced API solutions focused on security, data processing, monitoring, onboarding automation, and high-performance connectivity.

This role is ideal for engineers who enjoy solving complex problems, working in modern cloud environments, and collaborating with international teams.

Your responsibilities

1. Design, develop, and maintain APIs and integration modules connecting the platform to thousands of European banks and financial institutions.
2. Collaborate with engineers and product stakeholders to define requirements, set acceptance criteria, and deliver solutions.
3. Contribute to architecture by ensuring scalability, maintainability, and adherence to best practices.
4. Maintain quality through code reviews, testing, and continuous improvement initiatives.
5. Solve complex problems involving performance, distributed systems, and regulatory constraints.