S

Senior .NET Developer

sgi • Frankfurt Rhine-main Metropolitan Area
Remote
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AI Summary

Design, develop, and maintain mission-critical banking applications for payments, lending, digital channels, regulatory reporting, risk management, and customer onboarding platforms. Work within agile delivery teams using modern Microsoft technologies and cloud-native practices. Must have 12-month contract, fully remote, and B2 German proficiency.

Key Highlights
12-month contract position
Fully remote with mandatory B2 German proficiency
Senior .NET Developer role for financial services in Germany
Key Responsibilities
Design and develop enterprise-grade applications using the Microsoft .NET ecosystem
Build and maintain RESTful APIs and microservices
Develop secure, scalable, and highly available banking solutions
Technical Skills Required
C# .NET ASP.NET Core
Benefits & Perks
12 Month Contract
Fully Remote
Must speak German (B2 minimum)
Nice to Have
Azure SQL
Docker
Kubernetes

Job Description


.NET Developer

12 Month Contract

Fully Remote - Must speak German (B2 minimum)


We are seeking an experienced Senior .NET Developer to join a leading financial services client in Germany. The successful candidate will design, develop, and maintain mission-critical banking applications supporting payments, lending, digital channels, regulatory reporting, risk management, and customer onboarding platforms.


You will work within agile delivery teams to build secure, scalable, and high-performance solutions using modern Microsoft technologies and cloud-native development practices.


Key Responsibilities

  • Design and develop enterprise-grade applications using the Microsoft .NET ecosystem.
  • Build and maintain RESTful APIs and microservices.
  • Develop secure, scalable, and highly available banking solutions.
  • Collaborate with business analysts, architects, product owners and QA teams.
  • Participate in technical design workshops and architecture discussions.
  • Create reusable code, frameworks and development standards.
  • Implement CI/CD pipelines and DevOps best practices.
  • Ensure compliance with banking security, regulatory and audit requirements.
  • Conduct code reviews and mentor junior developers.
  • Troubleshoot performance bottlenecks and production incidents.
  • Participate in Agile ceremonies including sprint planning, retrospectives and backlog refinement.


Mandatory Technical Skills


Core .NET Development

  • C#
  • .NET Framework
  • .NET Core / .NET 6/7/8
  • ASP.NET Core
  • Web API Development
  • Entity Framework / Entity Framework Core
  • LINQ
  • Dependency Injection
  • Object-Oriented Programming (OOP)
  • Design Patterns (Repository, Factory, Strategy, CQRS)


Database Technologies

  • Microsoft SQL Server
  • T-SQL
  • Performance Tuning
  • Stored Procedures
  • Database Design & Modelling
  • Azure SQL (desirable)


API & Integration

  • REST APIs
  • JSON
  • SOAP Services
  • Swagger/OpenAPI
  • API Security
  • OAuth 2.0
  • OpenID Connect


Cloud & Modern Development

  • Microsoft Azure
  • Azure App Services
  • Azure Functions
  • Azure Storage
  • Azure Service Bus
  • Azure DevOps
  • Event-Driven Architecture


Microservices

  • Microservice Architecture
  • Docker
  • Kubernetes (preferred)
  • Messaging Platforms
  • RabbitMQ
  • Kafka (nice to have)



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