Senior .NET Engineer — AI-Driven Risk Platform

Moody's; Brussel Hoofdstad; On-site; EUR 60,000 - 90,000; Full time

Job summary

Moody's Analytics seeks a skilled .NET developer to join the Orbis team, enhancing and scaling high-scale applications that support financial decision-making for thousands of clients.

You will maintain legacy .NET Framework 4.8 and modern .NET 10/ASP.NET Core MVC projects, debug production incidents, and implement performance improvements. Collaboration with product, design, and data teams is essential for delivering robust features and CI/CD powered by GitHub Actions and Jenkins.

Qualifications

• Proven experience shipping production software (2+ years).
• Strong proficiency in C# including async/await, LINQ, generics, dependency injection, and modern language features.
• Experience with ASP.NET MVC and Web API on .NET Framework 4.8.
• Working knowledge of modern .NET (.NET 10) and ASP.NET Core MVC.
• Experience building web applications using HTML5, CSS3, and JavaScript.
• Experience working with and understanding existing codebases, including debugging and troubleshooting in production environments.
• Ability to write clean, testable, and maintainable code, supported by unit testing frameworks such as xUnit, NUnit, or MSTest.
• Proficiency with Git, Visual Studio, and NuGet.
• Strong collaboration skills and ability to work effectively in a cross-functional environment.
• Strong problem-solving mindset with rigor in debugging and root-cause analysis.
• Experience with React and TypeScript.
• Basic knowledge of SQL and Entity Framework / EF Core.
• Exposure to .NET Framework to .NET migration projects.
• Familiarity with CI/CD practices and tools such as GitHub Actions and Jenkins.
• Curiosity about emerging technologies, including AI and modern developer tools.
• Demonstrated proficiency in artificial intelligence concepts, with hands-on experience using AI tools to streamline workflows and enhance operational efficiency. Proven ability to implement AI-powered solutions to solve business challenges. Demonstrates a growing awareness of AI risk management and a commitment to responsible and ethical AI use.

Responsibilities

• Contribute to the ongoing success of Orbis by enhancing, maintaining, and evolving high-scale .NET applications that support critical financial decision-making for thousands of clients worldwide.
• Maintain and support existing .NET Framework 4.8 and .NET 10 applications, ensuring their stability, reliability, and performance in production.
• Investigate, troubleshoot, and resolve bugs and production incidents by analyzing application behavior, logs, and code.
• Identify and implement performance optimizations and code quality improvements across existing applications.
• Design and deliver new features and enhancements aligned with established architecture, development standards, and business needs.
• Collaborate closely with product, design, and data teams to define and deliver impactful technical solutions.
• Ensure high-quality, maintainable code through testing, code reviews, and continuous integration practices.
• Contribute to technical documentation and actively share knowledge to support team effectiveness and application ownership.

Skills

C#

ASP.NET MVC

Web API

.NET Framework 4.8

.NET 10

ASP.NET Core MVC

HTML5

CSS3

JavaScript

xUnit/NUnit/MSTest

Git

Visual Studio

NuGet

React

TypeScript

SQL

Entity Framework / EF Core

CI/CD

GitHub Actions

Jenkins

AI tools

Tools

Git

Visual Studio

NuGet

React

TypeScript

Job description

Moody's Analytics seeks a skilled .NET developer to join the Orbis team, enhancing and scaling high-scale applications that support financial decision-making for thousands of clients.

You will maintain legacy .NET Framework 4.8 and modern .NET 10/ASP.NET Core MVC projects, debug production incidents, and implement performance improvements. Collaboration with product, design, and data teams is essential for delivering robust features and CI/CD powered by GitHub Actions and Jenkins.