C#/.NET development

UN Children's Fund - UNICEF | Volunteer |
Closing: 05 Feb 2026 6 days remaining
Location: Madrid

Overview

Review and improve an open source project built mainly in C#/.NET, with some JavaScript/TypeScript, CSS, T-SQL, and PowerShell.

Tasks Summary
  • Reviewing code on GitHub
  • Suggesting improvements and contribute to the development of the LP2.0 roadmap
  • Contribute to FE architecture discussion, review component library, accessibility, performance.
  • Estimating the effort for new features and highlighting risks or dependencies
  • Support with documentation efforts
  • Using tools like GitHub Copilot, Copilot Chat/Agents, GitHub Spark, or Replit Ghostwriter to explore, explain, and even prototype code features
  • Submitting fixes, improvements, or small features via pull requests
Experience Requirements
  • Experience in C#/.NET (ASP.NET Core, EF Core) and modern software architecture.
  • Solid understanding of frontend technologies (JavaScript/TypeScript, CSS) and their integration with .NET backends.
  • Experience with database design and optimization using T-SQL and SQL Server.
  • Familiarity with DevOps practices and scripting (PowerShell, CI/CD pipelines, GitHub Actions).
  • Prior experience conducting code reviews, technical audits, and refactoring recommendations.
  • Ability to communicate findings clearly and collaborate through GitHub (issues, PRs, documentation).
  • An interest in helping others understand code as well as writing it
  • Curiosity to try out AI-assisted dev tools like Copilot or Replit
  • Exposure to cloud platforms (Azure, AWS) for .NET deployments.
  • Familiarity with testing frameworks (xUnit, NUnit, Moq) and best practices in CI/CD.
  • Experience mentoring teams or explaining technical trade-offs to non-technical stakeholders.
Qualification Requirements
Other Details

Languages Required:

Languages Preferred: • English, Level: Fluent, Desirable • French, Level: Fluent, Desirable

Contract Duration: 12 weeks

Work Modality: Online

Remuneration:

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