Mid-Level .NET Developer – Financial Technology Sector

Ignite the future of digital banking — develop innovative solutions that transform financial services!

Warsaw-based opportunity with hybrid work model (2 days in the office/month).

As a .NET Developer you will be working for our client, one of the leaders in the online banking sector that develops and maintains large-scale financial systems supporting daily operations of digital banking services. In this role you will contribute to the development and improvement of a core banking platform used across the organization. You will work closely with analysts, developers, and business stakeholders to implement new functionalities, improve system performance, and ensure the reliability and quality of software solutions in a modern .NET environment.

Your main responsibilities:

• Implement new functionalities and system improvements in applications developed in the .NET environment
• Participate in development work within projects related to the core banking system
• Develop and maintain automated tests to ensure high quality of delivered solutions
• Collaborate with analysts and business users to support requirements analysis and clarification
• Participate in internal software testing and verification processes
• Create and update technical and functional documentation for developed solutions
• Support the development team in maintaining system stability and performance

You're ideal for this role if you have:

• Good knowledge of C#, .NET, .NET Core
• Experience with MS SQL and PosgreSQL
• Understanding of object-oriented programming principles and design patterns
• Hands on experience with Docker and Kubernetes
• Knowledge of automated testing techniques
• Ability to work effectively in a team environment
• Strong communication skills and attention to detail
• Good organizational skills and ability to quickly learn new technologies
• Ability to work with technical documentation in English
• Familiarity with software development best practices (e.g. SOLID)

Nice to have:

• Knowledge of Agile methodology