X++ Experts in Cologne

X++ is used to tailor Microsoft Dynamics 365 Finance and Operations to a company’s business rules. It covers form behavior, validations, workflows, batch processing, and integrations that need to live inside the ERP system. Many teams also still use the term when discussing older Dynamics AX codebases.

X++ matters in both worlds. It is the language behind custom logic in Dynamics 365 Finance and Operations, and it is also common in older Dynamics AX environments. If a company is upgrading from AX, the freelancer needs to understand both the legacy code and the newer extension model.

X++ is the language for core ERP customizations inside the Dynamics application layer, while C# is often used for surrounding services and integrations. A strong specialist knows when to keep logic in X++ and when to move it into external code. That distinction matters for maintainability and upgrade safety.

A strong X++ specialist usually knows the Dynamics data model, extension patterns, security, and batch framework. Practical experience with SQL Server, OData, Power Platform touchpoints, and debugging in Visual Studio is also useful. Business knowledge in finance, procurement, or supply chain is often a major plus.

X++ work usually needs more than a code brief. The expert should understand the business process, where the change sits in the ERP flow, and which standard objects are already in use. Good discovery saves time later, especially on upgrades and performance-sensitive customizations.

Yes, X++ work is often well suited to remote delivery, especially for analysis, coding, and testing. On-site time in Cologne can still help for workshops, process mapping, and sign-off with finance or operations teams. Many projects use a mix of both.

With X++, look for clean extension-based solutions, clear documentation, and a track record of working with Dynamics release changes. Good specialists explain trade-offs, avoid fragile custom code, and can debug issues in the application and database layers. If they can speak plainly about business impact, that is a strong sign.

X++ freelancers are often brought in for upgrades, performance fixes, custom workflows, integrations, and support for release regressions. They also help when internal teams need extra capacity for backlog work in Finance and Operations. For Cologne-based companies, they may support local teams during workshops and then continue delivery remotely.

The average hourly rate of freelancers in Cologne, Germany who have used X++ in their recent projects is 109 €, which corresponds to a daily rate of about 870 € based on an 8-hour working day.

Of the freelancers in Cologne, Germany who have used X++ in their recent projects, 100% hold at least a Bachelor's degree, 60% hold at least a Master's degree, and 20% hold a doctorate.

On average, freelancers in Cologne, Germany who have used X++ in their recent projects have 23 years of professional experience, with a single engagement typically lasting around 1.8 years.

The most common languages among freelancers in Cologne, Germany who have used X++ in their recent projects are German (100%), English (100%), and Turkish (50%).

The most common industries among freelancers in Cologne, Germany who have used X++ in their recent projects are Information Technology (100%), Banking and Finance (67%), and Automotive (50%).

The most common business areas among freelancers in Cologne, Germany who have used X++ in their recent projects are Project Management (100%), Business Intelligence (83%), and Information Technology (83%).