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Senior Developer

FORFIRM

Job Location:

Lugano - Switzerland

Monthly Salary: Not provided by the employer

Posted: 16 September 2026 (16 hours ago)

Application Deadline: 14 December 2026

Vacancies: 1 Vacancy

Job Summary

We are looking for a Senior Developer with proven experience in developing web applications and backend services using C# and Core.

The ideal candidate has a strong background in software design with a solid understanding and practical application of SOLID principles key Design Patterns and modern software architectures.

Experience in building distributed systems and implementing asynchronous communication using NServiceBus and RabbitMQ is also required.

Required Technical Skills

Technologies

C#
Core
.NET 8 9 or 10
Entity Framework Core
SQL Server
REST APIs
Git
Unit Testing (xUnit NUnit)

Software Development Principles

SOLID
Clean Code

Design Patterns

Repository Pattern
Unit of Work
Factory Pattern
Strategy Pattern
Builder Pattern
Mediator Pattern
CQRS
Repository

Architectures and Design Approaches

Clean Architecture
Domain-Driven Design (DDD)
Event-Driven Architectures
Distributed Systems
Asynchronous Service Communication

Preferred Skills

NServiceBus
RabbitMQ
Queue and Message Management
Message Processing Error Handling
Retry Mechanisms and Dead Letter Queues
Consumer Idempotency
Asynchronous Events and Commands
Microsoft Azure

Responsibilities

Analyze functional and technical requirements.
Design robust and scalable software solutions.
Develop web applications and REST APIs using Core.
Apply SOLID principles and Design Patterns effectively.
Implement asynchronous processes using NServiceBus and RabbitMQ.
Design components following Clean Architecture principles.
Collaborate with Business Analysts Project Managers and other developers.
Ensure software quality through unit testing code reviews and development best practices.

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