NTT DATA is looking for a mid-level .
NET developer to maintain and enhance an enterprise desktop application delivered as an Excel add-in. Develop features, troubleshoot issues, improve performance and reliability, and collaborate with the team throughout the software development lifecycle, for one of our international clients. This role is hybrid, as onsite presence in the Valencia office will be required. You will be responsible for:
• Own development work from gathering requirements and planning through implementation, testing, and software release.
• Maintain and extend C#/.
NET Framework code and WPF user interfaces.
• Develop and troubleshoot data access using ADO.
NET.
• Write and maintain unit and integration tests.
• Collaborate with the existing team on QA, resolve defects, and follow changes through release.
• Participate in code reviews, source control, and build and release workflows using Git and Azure DevOps. For this role you will need to have experience in:
• Bachelor's Degree in Information Technology, Cybersecurity, Computer Science, or related discipline-or equivalent professional experience.
• 3+ years of professional C#/.
NET development experience.
• Hands-on experience with WPF, .




NET Framework, and ADO.
NET.
• Proficiency with Visual Studio, SQL, and relational databases.
• Experience with Git, Azure DevOps, and unit and integration testing.
• Ability to gather and clarify requirements, plan work, and deliver changes through release.
• Ability to debug complex issues, work within an existing codebase, and communicate effectively.
• Fluency in English (written and spoken). Desirable:
• SQL Server Management Studio (SSMS).
• Dapper, Entity Framework, ASP.
NET MVC, .
NET 5+, or Telerik UI.
• Excel add-in development, Office interoperability, or enterprise desktop applications.
• Python If you are interested and available for this opportunity as freelance contractor, please share your CV in ENGLISH as soon as possible. NTT DATA is a general consultancy company, employing over 20.000 professionals world-wide. Within the International Institutions we have framework contracts with European Institutions like: European Commission; European Parliament; European Court of Auditors; Europol; NATO; Court of Justice; EPO; European Council, United Nations, etc.

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