Softwareentwickler (m/w/d) Backend (.NET / C#) im Bereich Zahlungssysteme
Core
Develop and extend complex backend applications for payment solutions, implementing business processes and workflows for retail and SME clients.
Role type
Senior Backend Engineer (.NET / C#)
Builds
Payment processing systems, REST APIs, and rule/validation engines for credit card acceptance and online payment solutions.
Domain
Financial Services / Payments
Required skills
C#, .NET Web API, Microsoft SQL Server, REST API design, Entity Framework, database modeling, data migration, software architecture, Clean Code, design patterns, OAuth2/OpenID Connect
Preferred skills
Service-oriented architecture, workflow process implementation, performance optimization, agile methodologies (Scrum/Kanban), automated testing
Technologies
.NET, C#, Microsoft SQL Server, Entity Framework, Keycloak, OAuth2, OpenID Connect
Responsibilities
Analyze and implement business processes and workflows; develop performant REST APIs for frontend and third-party integration; extend rule and validation systems; plan and execute database migrations; participate in architecture decisions; conduct code reviews and automated testing.
Seniority
Senior, hands-on IC
