Java + C# Lead Developer (digital payment)

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 Java 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.

Our expectations

• Tech Lead Experience

• Strong experience in building backend services (Java + .Net).

• Strong relevant experience in Java programming.

• Solid knowledge in C# programming.

• Deep knowledge of, or willingness to learn, development in a cloud environment (Azure or AWS).

• Familiarity with the tools and concepts required for modern software development (VCS, test automation, CI/CD).

• A collaborative mindset and a passion for working as part of a team.

• Ability to work effectively in an international, cross-functional team.

• Proficiency in English, fluent Polish.

• Hybrid work 2-3 days per week (Gdansk).

Nice to have

• Experience with Infrastructure as Code (IaC), ideally Terraform,

• Knowledge of application and API security (Certificates, HTTPS, etc.),

• Experience with containers (Docker).

• Prior experience in highly regulated industries (finance, healthcare, public sector),

• Passion for problem-solving and continuous learning.

Main responsibilities

• Lead and cooperate with the team of specialist who design, develop, and deliver software solutions based on modern technologies.

• Modernize and adjust existing applications according to internal standards and best practices.

• Perform system maintenance, identify root causes, and resolve issues efficiently.

• Develop, optimize, and maintain backend services and APIs.

• Collaborate closely with developers, testers, architects, and business stakeholders to design new features and enhancements.

• Work within a team environment to achieve shared goals using modern engineering tools and processes (VCS, CI/CD, test automation, ticketing systems).