05/12/2026 updated
100 % available
Mid-Senior .NET Backend Developer | C# • ASP.NET Core • EF Core • Azure | 4 years experience
Seville, Spain
Only remote
Computer Engineering Degree (In Progress)About me
Around 4 years of exp. delivering C# solutions. Knowledge in ASP.NET Core, EF Core, and architectures like MVC, MVVM & Hexagonal. I build scalable backends & cross-platform apps (Blazor, MAUI, etc). Proficiency in Azure (Web Apps, Logic Apps, Functions, SQL) & Database design (SQL/NoSQL).
Azure FunctionsASP.NETJava (Programming Language)JavaScript.NET FrameworkMicrosoft AzureC Sharp (Programming Language)Entity FrameworkHibernateJava Persistence APIMicrosoft Visual StudioSQL Server Management StudioModel View Controller (MVC).NET Framework 4NoSQL
Mid-Senior .NET Backend Developer | C# • ASP.NET Core • EF Core • Azure
Hello! I'm Ismael Ahumada, a software developer with 4 years of experience specialized in the C# .NET ecosystem. I build scalable backend systems and cloud-native solutions, focusing on maintainable code and standard architectural patterns.
Experience Highlights:
- Cloud Migration & Modernization: Led the end-to-end architectural redesign and migration of industrial legacy systems (Excel/VBA) to modern Full-Stack solutions (.NET 8 & Angular 18), significantly improving processing times and data consistency.
- AI & Enterprise Integration: Developed AI-powered automation workflows using Blazor and Azure AI services, integrating metadata extraction into SAP via custom ESB solutions to streamline financial operations.
- Scalable Product Development: Core developer for Revolve, a cloud-native sustainability tracking platform (iturri.com), implementing interactive reporting and real-time data visualization using the full .NET/Azure stack.
- Global Platforms Support: Provided technical evolution and stability for global vehicle damage assessment tools (Solera Qapter Claims) within a distributed multi-stack environment (Java Spring, SQL Server, .NET).
- International Insurtech (Netherlands): Managed mission-critical platforms for the Dutch insurance market, optimizing high-traffic PostgreSQL databases and maintaining complex data exchange systems between underwriters and financial stakeholders.
Technologies Stack:
My main expertise is in C# .NET 6+. I also have experience with .NET Framework 4.8.1 for legacy projects and a solid frontend foundation with Angular, Blazor, and TypeScript.
Backend & Development
- Tech: C#, .NET (6, 8, 10), ASP.NET Core and API REST.
- Patterns: Hexagonal, Clean Architecture, MVC, and MVVM.
- Tools: Entity Framework Core (EF Core) and LINQ.
- UI: Angular, MAUI, WPF, and Blazor.
Data Management
- SQL: SQL Server, PostgreSQL, and MySQL.
- NoSQL: CosmosDB and MongoDB.
- Data modeling: ER diagrams, implementation, and secure transactionality.
Azure Cloud
- Deployment: Azure Web Apps and Azure Functions (Serverless).
- Automation: Workflow optimization with Logic Apps.
- Storage: Azure SQL and Blob Storage for object/file management.
Additional Knowledge: I have also worked punctually with React, Java (Spring MVC, Hibernate, JPA) and PHP (Prestashop), which allows me to adapt to different technical environments and legacy migrations. I am an efficiency-oriented developer, always focused on continuous learning and solving technical challenges.
If you need a reliable technical partner for your next project, let’s connect!
Experience
Professional experience0 - 5 years
Freelancer since2026
Languages
EnglishFluentFrenchBasic knowledgeJapaneseGoodSpanishNative speaker
Project history
Contribute building scalable solutions using C# .NET, Angular and Azure Cloud Services. I primarily use the Azure ecosystem to deploy my developments, manage robust data solutions with SQL Server, and handle authentication and storage requirements. I also leverage cloud automation tools like Functions and Logic Apps to optimize business operations.
Key Projects & Impact:
- AI-Powered Invoice Automation: Developed a .NET 8 & Blazor app to automate PDF invoice processing. The system leverages Cloud AI services for metadata extraction, integrated into an ESB connected to SAP via HTTP, streamlining financial workflows.
- Revolve (Sustainability Tracking): As a core developer, I contributed to Revolve, a cloud-deployed app tracking CO₂/H₂O consumption. Built with the full .NET stack, Angular 16+, and SQL Server, providing interactive charts and reporting. Website: revolve.iturri.com/en/revolve.
- Industrial Document Generator (Migration): Independently designed and architected a CE & Brochure generator. I led the migration from a legacy Excel/VBA workflow to a modern solution using Angular 18 and .NET 8. By leveraging a cloud-based architecture, I drastically improved document generation times, UI/UX, and data consistency across the industrial department.
- Additional Technical Support: Experience supporting Prestashop apps and a background in IT Helpdesk management, providing technical assistance.
Contributed to high-impact international projects within the Automotive and Insurtech sectors, specifically supporting the company's Dutch division.
My role focused on ensuring the stability and evolution of mission-critical platforms that manage large-scale data exchange between key stakeholders in the insurance ecosystem.
Key Contributions & Projects:
- Volmachtbeheer (Netherlands Business Unit): Performed end-to-end maintenance and feature enhancements for this strategic platform used by Dutch insurance companies and underwriting agents. I specialized in optimizing legacy .NET Framework 4.8 environments, utilizing ASP.NET and ADO.NET to manage complex data workflows and ensure seamless communication between disparate financial systems.
- Database Optimization: Managed and optimized PostgreSQL databases, ensuring data integrity and improving query performance for high-traffic insurance management tools.
- Qapter Claims Support: Provided technical support and feature development for Qapter Claims, Solera’s flagship global platform for vehicle damage assessment. Working within a multi-stack environment, I tackled complex bug fixing and system stability tasks using Java Spring, Apache Velocity, and SQL Server.
- International Collaboration: Worked effectively in a distributed team environment, aligning development tasks with the specific regulatory and business requirements of the Netherlands market, which demanded high standards of code quality and security.