Software Developer – Legacy Applications, C#/.NET

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CGF CounselGroupFrankfurt AG

WebsiteLinkedInAll Job Openings

201 - 500 employees

💼 Consulting

🏥 Healthcare

📦 Logistics

Consulting • Healthcare • Logistics

CGF CounselGroupFrankfurt AG is a global IT consulting firm with over 200 consultants dedicated to providing tailored IT solutions. The company prides itself on a solutions-oriented service model that focuses on delivering business value. CGF specializes in the implementation of industrial Internet of Things (IIoT) communication systems that enhance production efficiency. Furthermore, they offer comprehensive IT security solutions to protect information systems and data. CGF is also known for their responsive IT support services, providing first, second, and third-level support remotely or on-site.

📋 Description

• Further develop and stabilize an existing C#/.NET backend application landscape • Fix bugs and analyze errors across interdependent applications • Perform targeted refactoring and gradually implement automated tests • Reproduce reported errors using available information • Communicate with users during error analysis • Document causes and solutions • Ensure bug fixes do not cause side effects • Identify critical maintainability problems • Simplify complex methods and classes • Reduce code duplication and improve source-code readability • Introduce clear responsibilities within classes • Eliminate obvious anti-patterns • Improve error handling, logging, exception handling, validations, and plausibility checks • Create tests for modified or refactored components • Build phased test coverage for critical business logic • Create regression tests for fixed bugs • Support code reviews and implement review comments traceably • Communicate risks and impacts of changes early

🎯 Requirements

• Several years of experience in software development with C# and .NET • Experience maintaining and further developing legacy applications • Confident handling of object-oriented programming • Experience with Visual Studio and Git • Knowledge of analyzing complex existing codebases • Debugging experience • Ability to evaluate and improve existing software architectures • Experience with refactoring while preserving existing functionality • Understanding of Clean Code principles • Experience reducing technical debt • Experience with unit tests such as xUnit, NUnit, or MSTest • Ability to introduce automated tests into existing applications • Experience with mocking frameworks such as Moq • Experience with CI/CD pipelines for building and deploying applications in Azure DevOps is advantageous