Senior .NET Developer

Description

Job Summary: A leading IT company is seeking a Senior .NET Developer for a project involving system development, maintenance, and support, with a focus on the Microsoft ecosystem. Key Highlights: 1. Project focused on development, evolutionary maintenance, and system support 2. Join a technical challenge using the Microsoft stack and clean architecture 3. Use of AI-assisted tools to support development tasks A leading IT company is currently looking for a Senior .NET Developer to join a project focused on system development, evolutionary maintenance, and support, working with technologies from the Microsoft ecosystem. We seek a senior-level, autonomous professional with solid experience in C#, .NET, ASP.NET Core Web API, SQL Server, Azure DevOps, and Clean Architecture, capable of taking full technical ownership of complete modules and collaborating effectively with technical teams, functional analysts, and business units. Key Responsibilities: • Design, develop, and maintain .NET / C# services and APIs following Clean Architecture principles. • Work with layered architecture: Domain, Application, Infrastructure, and Presentation. • Design, optimize, and maintain SQL Server queries, data models, and stored procedures. • Manage versioning, branching, Pull Requests, and pipelines in Azure DevOps. • Provide second- and third-level production support for systems, including incident analysis, hotfixes, and evolutionary improvements. • Collaborate with functional analysts and stakeholders to translate business requirements into high-quality technical solutions. • Use AI-assisted tools such as Claude Code, Copilot, Cursor, or others to support development tasks, refactoring, documentation, and testing. Requirements: • 5+ years of experience developing with C# / .NET. • 4+ years of experience building APIs with ASP.NET Core Web API. • 4+ years of experience working with SQL Server, including T-SQL, stored procedures, indexes, and query optimization. • Experience with Entity Framework Core. • Experience with Azure DevOps: Repos, Boards, Pipelines, and Artifacts. • Proficiency in Git, Pull Requests, and collaborative workflows. • Strong knowledge of Clean Architecture, DDD, and SOLID principles. • Proficiency in Visual Studio / Visual Studio Code. Desirable: • Experience in the complementary insurance, collective health, or ISAPRE industries. • Knowledge of regulations related to healthcare, ISAPREs, GES, or the Superintendence of Health. • Experience using AI-assisted tools in real-world development workflows. • Knowledge of Azure services: App Services, Azure SQL, Storage, Key Vault, Service Bus, or Functions. • Experience with Docker and containerized deployments. • Knowledge of Hangfire, MassTransit, message queues, or background jobs. • Experience with automated testing using xUnit, NUnit, or integration tests. • Technical English reading proficiency. Conditions: • Work mode: 100% on-site. • Location: Providencia, near Pedro de Valdivia Metro Station. • Contract type: Indefinite-term contract. • Hiring: Direct employment with the IT client. Kibernum participates solely in the search and selection process. If you have senior-level .NET development experience and are looking to join a technical challenge leveraging the Microsoft stack, clean architecture, and a strong focus on software quality, apply with us! -Requirements- Minimum education: University / Professional Institute / Technical Training Center. 4 years of experience Keywords: developer, programmer, dotnet, net, net, senior, sr