Backend Engineer - Consumer Apps

Location: Fuengirola, Malaga, Spain

Job overview

As a Backend Engineer, you will help design, build and evolve backend services that support our customer-facing digital experiences. You will work mainly with C#/.NET and Azure in a microservices environment, collaborating closely with engineers, QA and Product.

You will contribute throughout the development lifecycle - from understanding customer and business needs to implementation, testing, deployment and production support - while continuing to grow your technical ownership and impact within the team.

Responsibilities

• Design, develop and maintain clean, scalable backend services using C# and .NET.

• Build solutions based on customer and business needs.

• Contribute to reliable architecture, performance, security and maintainability.

• Write unit and integration tests to ensure quality and reduce regressions.

• Investigate and solve technical issues across services and components.

• Participate in technical discussions, code reviews and continuous improvement.

• Collaborate closely with Product, QA and other engineering teams.

• Share knowledge and contribute to improving engineering practices within the team.

Requirements

• Strong experience with C# and .NET / .NET Core.

• Good understanding of REST APIs, microservices and event-driven architectures.

• Experience building and maintaining production backend systems.

• Experience with SQL databases.

• Experience with unit and integration testing.

• Familiarity with cloud environments, preferably Azure.

• Comfortable with CI/CD and modern software delivery practices.

• Ability to understand business and customer needs and contribute to technical solutions.

• Collaborative mindset and comfortable giving and receiving feedback.

• Good written and spoken English.

• Curious, pragmatic and motivated to continuously learn and grow.

• Valid work permit in the EU.

Nice to have

• Experience with Azure Service Bus and event-driven systems.

• Experience with NoSQL databases, such as Cosmos DB.

• Terraform / Infrastructure as Code experience.

• Experience with observability, monitoring and production support.

• Experience building backend services consumed by iOS/Android applications.

• Authentication and authorization experience, such as OAuth/OIDC or Auth0/Okta.

• Experience using AI-assisted development tools, such as Claude Code, GitHub Copilot or similar.