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.NET Backend Developer

Role overview

Qualifications

  • Strong commercial experience with .NET and C# in enterprise environments
  • Proven experience building RESTful APIs and backend services
  • Solid understanding of object-oriented design, SOLID principles, and clean architecture
  • Hands-on experience with Azure services (App Services, Functions, Azure SQL, Storage, Service Bus)

Responsibilities

  • Design, develop, and maintain backend services using .NET and C# in a modular, service-oriented architecture
  • Build and support REST APIs for complex business processes and data-driven workflows
  • Implement business logic related to calculations, validation, reporting, and audit readiness
  • Integrate backend services with frontend applications and AI-enabled components

About the company

Madiff logo

Madiff

We are an international Innovation, IT and high-tech engineering consulting company that delivers unique value in a wide variety of industries. Our mission is to add value to our customers businesses by providing digital and technological innovation services, delivering disruptive results and making our clients stand out in their market. We are driven by a creative and innovative consulting approach strongly oriented to getting results. We MAKE THE DIFFERENCE. Poland | UK | Switzerland | USA | Norway | Portugal | Spain | France | Singapore Warsaw Prosta 20 Wrocław Rybacka 7 Lublin Grottgera 2

Company details

Company size51 - 200

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Job description

This is a remote position.

We are looking for an experienced .NET Backend Developer to join a long-term delivery stream supporting a large-scale, international cloud-based solution. The role focuses on building and extending core backend services responsible for complex business workflows, calculations, reporting logic, and audit traceability in mature, production-critical environments.


Responsibilities

  • Design, develop, and maintain backend services using .NET and C# in a modular, service-oriented architecture
  • Build and support REST APIs for complex business processes and data-driven workflows
  • Implement business logic related to calculations, validation, reporting, and audit readiness
  • Integrate backend services with frontend applications and AI-enabled components
  • Work with Azure cloud services to deliver scalable, secure, and resilient solutions
  • Design and optimise data access layers using relational databases
  • Ensure high coglobalde quality through testing, code reviews, and engineering best practices
  • Collaborate with analysts to translate functional and regulatory requirements into technical solutions
  • Support monitoring, performance optimisation, and troubleshooting in cloud environments
  • Contribute to architectural discussions and continuous platform improvement


Requirements

  • Strong commercial experience with .NET and C# in enterprise environments
  • Proven experience building RESTful APIs and backend services
  • Solid understanding of object-oriented design, SOLID principles, and clean architecture
  • Hands-on experience with Azure services (App Services, Functions, Azure SQL, Storage, Service Bus)
  • Good knowledge of relational databases and SQL
  • Experience with authentication and authorisation mechanisms
  • Understanding of CI/CD pipelines and Agile delivery practices

    Nice to have:

  • Experience with microservices architectures
  • Exposure to Domain-Driven Design
  • Background in regulated, financial, or compliance-heavy systems
  • Familiarity with cloud security, monitoring, and logging
  • Experience working in distributed, international teams

Benefits

  • Solid, competitive salary
  • Work in multinational environment on international projects
  • Comprehensive healthcare
  • Long-term B2B contract with stable project pipeline
  • Fully remote model

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MR

Marcus Rivera

Chief Revenue Officer

m.rivera@company.com
linkedin.com/in/marcusrivera
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