Senior Backend Engineer .NET

The nominated (Senior) Backend Engineer will:

• Take ownership of the development and maintenance of backend services using .NET / .NET Core and C#, ensuring high performance, scalability, and reliability.
• Work closely with internal client teams to design, build, and refine RESTful APIs and service components.
• Contribute to architectural decisions, share best practices, and help establish clean, maintainable, and testable codebases.
• Participate in code reviews and provide constructive feedback to maintain high engineering standards.
• Identify and resolve performance bottlenecks and support the integration of backend services with third-party systems.
• Document systems clearly and contribute to the creation and maintenance of technical documentation.
• Communicate effectively with stakeholders on both client and service sides, both in German and English.

Must-have:

• .NET / .NET Core
• C#
• Entity Framework
• REST APIs
• PowerShell
• SQL
• Experience with build and deployment processes in Azure DevOps

Ideally:

• Experience with microservice architectures
• Experience with RabbitMQ or Azure Service Bus
• Experience with Elasticsearch
• Comfortable communicating with clients
• Fluent communication in German and English

Nice-to-have:

• Frontend knowledge in AngularJS and Angular 14
• Experience with Azure Cloud and Docker

Maandag® Poland (previously Whoohoo Poland) is based in Wroclaw and we mainly focus on providing IT talents and building IT nearshoring teams in Poland for companies all over the world. Our English/German speaking IT developers support our clients remotely in the scope of backend, frontend, testing and mobile. We are part of the Dutch company Maandag®, with 4,000 employees and a network of 48 offices located in the Netherlands, Poland, Belgium and Sweden. Our Clients’ portfolio is rich in prestigious companies in fields of fintech, e-commerce, automotive, finance, engineering. Our mission is to change the IT job market by looking at people through their skills and personalities. Thanks to professionalism and an innovative approach, we change the labor market by matching the right candidate for the right position. Wroclaw is also home to our internal software house, which helps enterprises with digital transformations and start-ups with translating ideas into products.