Freelancer profile translated to English.
Back to original languageAbout Juan
I am a .NET / C# Developer with over 4 years of experience in developing and maintaining enterprise applications.
I have worked in consulting and product, participating in the development of APIs, web applications with ASP.NET and Blazor, and in the migration of legacy systems in VB.NET to modern technologies.
My experience includes:
Development and maintenance of backend and frontend applications
Integration with relational databases and SQL
Migration and modernization of legacy applications
Working in agile environments (Scrum) and collaboration with cross-functional teams
I focus on delivering quality, clean, and maintainable solutions, tailored to the client's needs.
I am looking for short or medium-term projects where I can add value from day one, especially in the maintenance, evolution, or modernization of .NET and Blazor systems.
Spanish
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- NTTDATA SpainSoftware EngineerTELECOMMUNICATIONSJune 2021 - December 2024 (3 years and 6 months)Development of .NET applications and APIs, focused on maintainability, performance, and usability.Maintenance and evolution of legacy applications, resolving incidents and adding new functionalities.Active collaboration with cross-functional teams, participating in the analysis and implementation of technical solutions.Application of good development practices and code quality through SonarQube and SonarLint.Version control management in Azure DevOps using Git.Development of .NET applications integrated with relational databases, implementing CRUD operations.Creation and optimization of SQL procedures, reducing query execution times.Working in agile environments (Scrum), participating in sprint planning and retrospectives.
- ZucchettiSoftware EngineerJuly 2025 - Today (1 year and 1 month)Madrid, SpainDevelopment and maintenance of web applications using Blazor and Windows Forms.Maintenance and evolution of legacy applications in VB.NET.Progressive migration of functionalities from VB.NET to Blazor, modernizing existing applications.Development of new functionalities and adaptation of interfaces to business needs.Working with relational databases and SQL in enterprise applications.Analysis of existing code for refactoring and improvement.Collaboration with other technical profiles in structured development environments.
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Education
- Cross-platform Application DevelopmentIES Julian Marías2021