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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # NET Backend Developer - **Company:** PUBLICIS GROUPE - **Location:** Madrid, Spain (Remote available) - **Contract:** Permanent contract - **Skills:** Clean Code Principles, ASP.NET, Application Programming Interfaces (APIs), Google AdWords, Artificial Intelligence, JIRA, Unit Testing, Microsoft Azure, Cloud Computing, Software Quality, Code Review, Continuous Integration, Data Infrastructure, Relational Databases, Distributed Systems, Entity Framework, Github, PostgreSQL, Microsoft SQL Server, MongoDB, NoSQL, OAuth, Openid Connect, Mstest, Systems Integration, Software Organization, Google Cloud, Test-Driven Development (TDD), Backend, Xunit, Integration Tests, Solid Principles, Cosmos DB, Restful APIs, Web Api, Microservices - **Published:** August 15, 2026 - **Apply:** https://www.jobleads.com/es/job/ecc623e27853a5b5498baed06269bfe85 ## About the Role * At least 2 years of experience developing with C# and .NET. * Experience in backend development using ASP.NET Core, Web API, and REST services. * Experience designing and implementing REST APIs. * Strong knowledge of Entity Framework Core. * Experience working with relational databases such as SQL Server, PostgreSQL, or similar. * Experience with unit testing frameworks such as xUnit, MSTest, or equivalent technologies. * Experience using GitHub for version control. * Experience using Jira or similar tools. * Solid understanding of SOLID principles, Clean Code, TDD, and software development best practices. * B2 English level or higher, allowing work with technical documentation and collaboration in international environments. Nice to have * Experience with microservices architectures and distributed systems. * Experience with cloud platforms such as Microsoft Azure or Google Cloud Platform (GCP). * Knowledge of NoSQL databases such as Cosmos DB or MongoDB. * Knowledge of authentication and authorization standards, including OAuth 2.0 and OpenID Connect. * Experience integrating services and platforms through APIs. * Knowledge of CI/CD practices and tools. * Interest or experience in Artificial Intelligence, automation, and data platform solutions. * Knowledge of the digital marketing ecosystem and advertising platforms such as Google Ads, DV360, Campaign Manager 360, Meta Business Manager, or similar tools. ## Description * Design, develop, and maintain backend applications using C# and .NET. * Participate in the definition and evolution of architectures based on microservices and APIs. * Develop and integrate REST APIs and services that connect different platforms and data sources. * Implement unit and integration tests to ensure software quality and stability. * Work following development best practices, SOLID principles, clean code standards, and code reviews. * Collaborate with multidisciplinary teams including developers, architects, data specialists, AI experts, and business stakeholders. * Participate in modern cloud environments and CI/CD processes. ## Related Videos - [Improving quality with Agentic AI with Rovo Dev and Xray](https://www.wearedevelopers.com/videos/2005-improving-quality-with-agentic-ai-with-rovo-dev-and-xray) - [pytest: Simple, rapid and fun testing with Python](https://www.wearedevelopers.com/videos/213-pytest-simple-rapid-and-fun-testing-with-python) - [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [Collaboration Quantified: Lessons from Open Source Developer Networks](https://www.wearedevelopers.com/videos/1422-collaboration-quantified-lessons-from-open-source-developer-networks) - [Inside Bitpanda's Tech Stack: Scaling a European Fintech Leader - Markus Dorner](https://www.wearedevelopers.com/videos/1979-inside-bitpanda-s-tech-stack-scaling-a-european-fintech-leader-markus-dorner) ## Related Articles - [Backend Developer Salary in Germany [2023]](https://www.wearedevelopers.com/magazine/196-backend-developer-salary-in-germany-2023) - [What’s the Difference Between Frontend and Backend Development?](https://www.wearedevelopers.com/magazine/240-what-s-the-difference-between-frontend-and-backend-development) - [Frontend Developer Salary in Germany [2023]](https://www.wearedevelopers.com/magazine/195-frontend-developer-salary-in-germany-2023) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [Frontend Developer Salary in The UK](https://www.wearedevelopers.com/magazine/233-frontend-developer-salary-in-the-uk) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market)