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About the position
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.
What we offer
- Full-remote working
You can work both on location and from home.
- Full-remote working
You can work both on location and from home.
Job Requirements
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
Company Description
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.
Working at Maandag®
For more than 35 years, Maandag® has been at the forefront of empowering people and organisations. We not only help professionals get jobs, but also connect them with a future that matches their values, desires and ambitions. Because when people are truly in the right place, they can develop themselves, fulfil their dreams and go to work with fresh energy every day. The energy and power released in the process is a catalyst for growth for companies. We started in the Netherlands, but now we also help professionals and organisations in Belgium, Poland, Dubai and Sweden. Our extensive knowledge of different markets, coupled with our wide network, enables us to make perfect matches quickly.
Apply
Do you recognize yourself in this profile? And does working at Maandag® sound like an exciting next step? Apply now, and who knows, your Monday might soon look just as great as ours.
Contact Person

Iga Adamowicz
Recruiter IT
The application process
Wondering what your process will be? See in our steps what you will go through to work at Maandag® in the future.
You apply
A recruiter from Maandag® will review your application to determine your suitability for the position and the company.
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