Freelancer profile translated to English.

Description

Senior Developer with over 17 years of experience in designing and developing scalable, secure, and high-performance applications using .NET technologies. Proven experience in banking, telecommunications, energy, and public administration. Expert in C#, .NET Core, WinForms, WPF, ASP.NET, and SQL Server. Mastery of modern practices such as Entity Framework, DevExpress, Azure DevOps, and agile methodologies. Accustomed to remote work with international teams, delivering robust solutions from conception to deployment.

Industry field of expertise

Languages

Spanish
Native or bilingual
Romanian
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Madrid (up to 50km)

Hubbell (Remoto –
Senior Developer
June 2022 - Today (4 years and 2 months)
Eeuu, Puerto Vallarta, JAL, Mexico
Design and implementation of scalable backend solutions with .NET Core and C#.
• • Optimization of SQL Server queries and database structures, reducing response times by 40%.
• • Management of Code-First migrations with Entity Framework in multiple environments without interruptions. Integration of RESTful APIs and external services.
• • Collaboration with international teams under agile methodologies and Azure DevOps pipelines.
NODI SL
Senior Freelance Developer
RAW MATERIALS INDUSTRY
October 2023 - November 2024 (1 year and 1 month)
Plaza España – RRCC, Burgos, Spain
Development of an ERP system that improved operational efficiency by 30%, using VB.NET and Windows Forms.
Design and optimization of SQL Server databases for high-volume transactional operations.
Rich interfaces with DevExpress, improving usability and productivity.
Secure and scalable modules for inventory, billing, and reporting.
Direct work with stakeholders to define requirements and ensure long-term maintainability.
SQL Server WinForms VB.NET Entity Framework Core DevExpress
Experis Manpower Group S.L.
Systems Analyst and Developer
BANKING AND INSURANCE
May 2019 - June 2022 (3 years and 1 month)
Spain
Leadership in systems analysis and coordination of production flows for financial applications.
Development of the Dealer Finance system, optimizing credit approval and tracking processes.
Backend logic with ASP.NET MVC, LINQ, and RESTful APIs.
Integration with Oracle databases and frontend improvements with JavaScript and jQuery.
jQuery ASP.NET MVC Oracle LINQ

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Master in .NET programming
cice
2010
Programación aplicaciones web/escritorio .NET
Master in .NET C# programming
ESF
2011
Programación aplicaciones web/escritorio C#

Ionut Remus S.

C#, .NET Core, WinForms, WPF, ASP.NET and SQL Server

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