Senior .NET Developer (with AZURE)

We are looking for a Senior .NET Developer to join a high-scale smart-shopping and cashback platform serving millions of users. The role focuses on building and optimising backend services supporting cashback, loyalty, affiliate, and e-commerce functionalities within a modern Azure-based microservices environment.

This is a hands-on backend engineering role requiring strong experience with .NET, Azure Cloud, REST APIs, and scalable distributed systems operating in a high-traffic production environment.

Responsibilities:

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  Develop and maintain backend services using .NET 8 and C#
  
  


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  Design and build RESTful APIs and microservices for high-traffic use cases
  
  


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  Integrate systems with third-party APIs and data providers
  
  


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  Work with Azure cloud services (App Services, Azure Functions, AKS, Blob Storage, Cosmos DB, etc.)
  
  


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  Implement unit and integration tests to ensure code quality and reliability
  
  


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  Work with Azure DevOps, Docker, and Git for CI/CD and version control
  
  


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  Collaborate with DevOps to optimise deployment pipelines and infrastructure
  
  


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  Participate in code reviews, architecture decisions, and sprint planning
  
  


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  Maintain documentation of backend architecture and API specifications
  
  

Requirements

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  Minimum 4–5 years of experience in backend development with C# and .NET (latest version .NET 8 preferred)
  
  


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  Proven experience designing scalable and secure REST APIs
  
  


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  Strong knowledge of Azure Cloud and microservices architecture
  
  


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  Experience with SQL (MS SQL Server, PostgreSQL) and ORM tools such as Entity Framework Core or Dapper
  
  


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  Familiarity with Azure DevOps, Docker containers, Git, and CI/CD pipelines
  
  


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  Good understanding of application security, error handling, and performance optimisation
  
  


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  Ability to work in Agile/Scrum teams and communicate with business and technical stakeholders
  
  

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  Experience with e-commerce, affiliate marketing, or cashback platforms
  
  


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  Exposure to NoSQL solutions like Cosmos DB or MongoDB
  
  


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  Experience with Event-Driven Architecture, e.g. Azure Event Grid or Kafka
  
  


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  Familiarity with front-end technologies (React, Angular) for collaboration purposes
  
  

Benefits

• Solid, competitive salary
  


• Work in a multinational environment on international projects
  


• Comprehensive healthcare
  


• Long-term B2B contract with a stable project pipeline
  


• Work model: fully remote (1-2 times/month in Warsaw)
  


• Work on a large-scale, high-impact product with strong market presence
  


• Be part of a modern .NET development environment in a cloud-first organisation
  


• Collaborate in a stable, secure fintech setting with the speed of a startup
  


• Enjoy flexible working and ownership of your development responsibilities