.NET Backend Developer

Hitachi

.NET Backend Developer designing and maintaining robust backend systems and APIs for critical enterprise applications. Collaborating with teams and optimizing applications for performance and security.

Posted 4/14/2026full-timeMadrid • 🇪🇸 SpainMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

AWSAzureCloudEntity FrameworkKafkaMicroservices.NETPostgresRabbitMQSQL

About the role

Key responsibilities & impact

Design, develop, and implement high-performance, scalable, and secure backend services and APIs using C# and the .NET framework
Collaborate with front-end developers, product managers, and other stakeholders to understand requirements and translate them into technical solutions
Write clean, maintainable, and efficient code following best practices and coding standards
Participate in code reviews to ensure quality and adherence to architectural guidelines
Troubleshoot, debug, and resolve issues in existing applications and systems
Develop and maintain technical documentation for new and existing functionalities
Optimize applications for maximum speed, scalability, and security
Contribute to the continuous improvement of development processes and tools
Stay updated with the latest industry trends, technologies, and best practices

Requirements

What you’ll need

Bachelor's degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience
Minimum 5 years of proven experience as a Backend Developer with strong proficiency in C# and the .NET framework (.NET Core/.NET 8+)
Solid understanding of object-oriented programming (OOP) principles and design patterns
Experience with relational databases (e.g., SQL Server, PostgreSQL) and ORM frameworks (e.g., Entity Framework Core)
Familiarity with RESTful API design and development
Experience with version control systems, preferably Git
Knowledge of cloud platforms (e.g., Azure, AWS) is a plus
Understanding of microservices architecture and message queuing systems (e.g., RabbitMQ, Kafka) is beneficial
Strong problem-solving skills and attention to detail
Excellent communication and teamwork skills

Benefits

Comp & perks

Attractive benefits including competitive compensation
Flexible, hybrid working options
Support for professional development through training
Internal mobility and international opportunities
Collaborative and inclusive company culture

ATS Keywords

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Hard Skills & Tools

C#.NET framework.NET Core.NET 8+object-oriented programmingdesign patternsSQL ServerPostgreSQLEntity Framework CoreRESTful API

Soft Skills

problem-solvingattention to detailcommunicationteamwork

Certifications

Bachelor's degree in Computer ScienceBachelor's degree in Software Engineering