Senior .NET Backend Engineer — Hybrid Madrid Hub

Colliers International Deutschland Holding GmbH; Madrid; Híbrido; EUR 70.000 - 110.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Hybrid work model

Descripción de la vacante

Colliers Madrid is seeking an experienced Backend Engineer to join the newly established Technology Hub. You will design, develop and maintain scalable enterprise software in a hybrid model, contributing to world-class solutions for global clients.

The role emphasizes C#/.NET, microservices, and collaboration with cross-functional teams to deliver high-quality products while shaping engineering practices and culture at a fast-growing global real estate leader.

Formación

• 5+ years of experience in .NET software development with C# and ASP.NET Core.
• Strong knowledge of object-oriented design, microservices architecture and API development (REST/GraphQL).
• Experience with SQL and NOSQL databases (SQL Server, PostgreSQL, Cosmos DB, MongoDB).
• Advanced understanding of cloud-native architectures, CI/CD pipelines and DevOps practices (GCP preferred).
• Experience in containerization (Docker, Kubernetes).
• Agile Development experience (Scrum/Kanban), including story estimation, code reviews and pair programming.
• Experience working in distributed or remote teams and using tools such as Jira, GitHub, Miro and Azure DevOps.
• Solid understanding of performance optimization and secure development practices (ISO27001, GDPR, SOC2).
• Excellent interpersonal and communication skills, fluent in English and Spanish.
• Passionate about building high-quality software products with empowered teams.

Responsabilidades

• Implement scalable and maintainable B2B software products using the Microsoft .NET stack (C#, ASP.NET Core).
• Contribute to architecture discussions/technology evaluation and participate in system and code reviews.
• Help define and adhere to coding standards, documentation and modern software lifecycle best practices such as SOLID, unit testing, CI/CD, and secure coding.
• Collaborate with product managers, designers, and QA to translate business requirements into technical specifications and user stories.
• Participate in sprint planning, backlog refinement and feature grooming to ensure technical feasibility and shared understanding across disciplines.

Conocimientos

Backend engineering

C#/.NET

Microservices

APIs REST/GraphQL

Cloud-native architecture

Docker/Kubernetes

Agile methodologies

Distributed teams

English & Spanish fluency

Security & ISO27001/GDPR

Herramientas

Docker

Kubernetes

Jira

GitHub

Azure DevOps

Miro

CI/CD

Postgres

SQL Server

Cosmos DB

MongoDB

Descripción del empleo

Colliers Madrid is seeking an experienced Backend Engineer to join the newly established Technology Hub. You will design, develop and maintain scalable enterprise software in a hybrid model, contributing to world-class solutions for global clients.

The role emphasizes C#/.NET, microservices, and collaboration with cross-functional teams to deliver high-quality products while shaping engineering practices and culture at a fast-growing global real estate leader.