emagine · Poland ·
Senior .NET developer building and modernizing banking systems in C#/.NET, focusing on securities and core banking platforms with cloud migration and full-stack responsibilities.
Link Group · Poland
Work model: 100% remote (candidates must be based in Poland)
Contract type: B2B
Industry: Banking / Investment Banking
We are looking for an experienced Senior .NET Developer to join a distributed engineering team working on critical banking systems. The role focuses on extending and modernising applications used across securities and banking operations, with a strong emphasis on system design, scalability, and cloud transformation.
You will work end-to-end on business-critical systems, closely collaborating with Business Analysts, without a separate QA team. A solid background in banking or financial services is essential.
Design, develop, and extend .NET-based systems supporting multiple banking entities
Contribute to the integration of securities and core banking platforms
Support and enhance a portfolio of ~17 applications across product control and risk management
Work with an in-house development framework in a full-stack capacity
Participate in scaling applications for cloud-based, containerized environments
Collaborate closely with business stakeholders to deliver robust solutions
Ensure high code quality through unit and integration testing
5+ years of professional experience as a .NET / C# Developer
Hands-on experience in the banking or investment banking sector (mandatory)
Full-stack development experience (backend-focused, frontend included)
Strong understanding and practical application of SOLID design principles
Experience with document-based databases (e.g. MongoDB)
Experience with event-driven / event-based messaging frameworks
Solid knowledge of unit and integration testing
Experience working end-to-end on applications (development, testing, support)
Ability to work independently in a fast-paced, regulated environment
Availability during UK business hours
Experience with cloud platforms and application migration to cloud
Experience with container technologies (e.g. Docker, Kubernetes)
Exposure to systems such as Murex or large in-house banking platforms
Background in securities, risk, or product control systems
This role is 100% remote with candidates required to be located in Poland. The contract is on a B2B basis within the banking and investment banking industry.