> Markdown version of [/jobs/ext/2778945-senior-net-engineer](https://www.wearedevelopers.com/jobs/ext/2778945-senior-net-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior .Net Engineer - **Company:** N-Ix - **Location:** Málaga, Spain - **Contract:** Permanent contract - **Skills:** ASP.NET, .NET Framework, Microsoft Windows, Agile Methodology, Amazon Web Services, Unit Testing, Code Coverage, Code Review, Databases, Command-Query Responsibility Segregation (Software Development), Data Migration, Linux, DevOps, Programming Tools, Entity Framework, Performance Tuning, Scrum Methodology, RabbitMQ, .NET Core, Backend, AWS ECS, Git, Xunit, Moq, Single Page Application, AngularJS, AWS Fargate, Front End Software Development, Docker - **Published:** September 7, 2026 - **Apply:** https://www.buscojobs.com.es/senior-net-engineer-en-malaga-ID-369830933 ## About the Role 5+ years of C# and .NET backend development with strong knowledge of ASP.NET and ASP.NET Core. Proven, hands-on experience migrating .NET Framework applications to .NET Core / .NET 8 in production. Solid experience with Entity Framework Core. Solid knowledge of DDD, CQRS, and repository patterns in layered .NET architectures. Familiarity with Docker multi-stage builds and Linux container fundamentals for .NET applications. Proficient with xUnit and Moq for unit testing; comfortable with container-wired test setups. Experience with AWS ECS / Fargate and ECR for deploying containerized .NET applications. Familiarity with MassTransit and RabbitMQ or Amazon MQ for event-driven messaging. Experience with Hangfire or similar background job processing frameworks. Proficient in Git and familiar with Agile/SCRUM team processes. English - Upper-intermediate Nice-to-Have Skills: Experience building CI/CD pipelines for .NET projects. Familiarity with micro-frontend architecture and Angular-based single-page applications. Experience with automated code coverage tooling and enforcing coverage thresholds in CI. Experience with performance optimization and scalable enterprise backend systems. ## Description N-iX is looking for aSenior .Net Engineerfor one of our clients.As a .NET Engineer you will drive the technical modernization of a large-scale system from .NET Framework 4.8 to .NET 8. Your work will span the full backend stack - replacing Windows-only dependencies, refactoring legacy patterns, migrating data access to EF Core, and ensuring every service is portable, containerizable, and ready for AWS cloud deployment. You will collaborate closely with DevOps and database engineers as part of a cross-functional Agile team delivering a phased, production-safe migration.Responsibilities:Migrate a .NET Framework 4.8 application to .NET 8.Migrate a large database-first Entity Framework 6 model to EF Core 8 across multiple bounded contexts, one domain at a time.Identify and replace Windows-only libraries and assembly references that prevent building and running on Linux.Establish unit test coverage measurement and enforce quality gates as part of the migration pipeline.Collaborate with the DevOps engineer on Dockerfile authoring, environment configuration, and secrets injection.Participate in Agile/SCRUM processes, conduct code reviews, and document migration decisions.Must-Have Qualifications:5+ years of C# and .NET backend development with strong knowledge of ASP.NET and ASP.NET Core.Proven, hands-on experience migrating .NET Framework applications to .NET Core / .NET 8 in production.Solid experience with Entity Framework Core.Solid knowledge of DDD, CQRS, and repository patterns in layered .NET architectures.Familiarity with Docker multi-stage builds and Linux container fundamentals for .NET applications.Proficient with xUnit and Moq for unit testing; comfortable with container-wired test setups.Experience with AWS ECS / Fargate and ECR for deploying containerized .NET applications.Familiarity with MassTransit and RabbitMQ or Amazon MQ for event-driven messaging.Experience with Hangfire or similar background job processing frameworks.Proficient in Git and familiar with Agile/SCRUM team processes.English - Upper-intermediateNice-to-Have Skills:Experience building CI/CD pipelines for .NET projects.Familiarity with micro-frontend architecture and Angular-based single-page applications.Experience with automated code coverage tooling and enforcing coverage thresholds in CI.Experience with performance optimization and scalable enterprise backend systems.We offer*:Flexible working format - remote, office-based or flexibleA competitive salary and good compensation packagePersonalized career growthProfessional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)Active tech communities with regular knowledge sharingEducation reimbursementMemorable anniversary presentsCorporate events and team buildingsOther location-specific benefits*not applicable for freelancers ## Related Videos - [Architectures that we can use with .NET](https://www.wearedevelopers.com/videos/935-architectures-that-we-can-use-with-net) - [pytest: Simple, rapid and fun testing with Python](https://www.wearedevelopers.com/videos/213-pytest-simple-rapid-and-fun-testing-with-python) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Using code generation for test automation – the fancy way](https://www.wearedevelopers.com/videos/230-using-code-generation-for-test-automation-the-fancy-way) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) - [This Is Not Your Father's .NET](https://www.wearedevelopers.com/videos/967-this-is-not-your-father-s-net) ## Related Articles - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs)