Senior ASP.NET Developer

FORFIRM; Ticino; On-site; CHF 110,000 - 150,000; Full time

Job summary

FORFIRM in Switzerland seeks a Senior ASP.NET Developer to build web applications and backend services using C# and ASP.NET Core. You will apply SOLID principles, design patterns, and modern architectures to deliver scalable solutions.

Responsibilities include analyzing requirements, designing robust software, implementing asynchronous communication with NServiceBus and RabbitMQ, and collaborating with Business Analysts and other developers. Experience with Azure is a plus.

Qualifications

• Proven experience in developing web applications and backend services with C# and ASP.NET Core.
• Strong background in software design, SOLID principles, and modern architectures.
• Experience with distributed systems and asynchronous messaging using NServiceBus and RabbitMQ.

Responsibilities

• Analyze functional and technical requirements.
• Design robust and scalable software solutions.
• Develop web applications and REST APIs using ASP.NET 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.

Skills

NServiceBus

RabbitMQ

Queue management

Error handling

Retry mechanisms

Idempotency

Asynchronous events

Microsoft Azure

Tools

SQL Server

Entity Framework Core

REST APIs

Git

Unit Testing (xUnit/NUnit)

Job description

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

Technologies

• C#
• ASP.NET 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 ASP.NET 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.