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X++ Experts in Dusseldorf

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Hire experts who work with custom X++ logic, Dynamics 365 Finance and Operations extensions, and Microsoft Dynamics AX integrations. Get fast, precise matching with vetted, available freelancers.

Meet FRATCH Experts in Dusseldorf, who have recently used X++

Verified expert

Kai V. Wulffen

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Process Manager in Operational Change Management

Düsseldorf
Kai V. Wulffen

Last position:

Process Manager in Operational Change Management at Jungheinrich AG

  • Introduction of a central change process
  • Technical support for the operational implementation of changes (ITIL technical change management)
  • Co-design and technical implementation of digital processes
Verified expert

Dalia Cananau

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Oracle Developer

Korschenbroich
Dalia Cananau

Last position:

Oracle Developer at Freelance

  • Design and implementation of an OCI-based data warehouse and ETL system to replace legacy mainframe applications
  • Developed a database optimization strategy and planned the rapid conversion of JCL and COBOL routines to PL/SQL using AI
  • Developed an Oracle Apex-based app for internal administrative processes in the public sector (office equipment, staff training)
  • Implemented PL/SQL workflows for approval processes and created a responsive mobile version with JavaScript and CSS
  • Used Azure DevOps for backlog management and documentation, and Git for version control
  • Developed REST interfaces to CRM systems
  • Replaced and reprogrammed Oracle Forms screens with Oracle Apex and updated to the latest Apex versions
  • Designed a Git branching strategy and conducted code reviews
  • Maintained and further developed an EDI-based data exchange system based on Oracle Advanced Queuing for the public sector in Austria
  • Performed data analysis and created charts in the Oracle Apex frontend; installed standalone ORDS and Apex 23.1
  • Worked agile using the Spotify model; developed complex Apex pages with support from Oracle JET
  • Rebuilt and customized existing PL/SQL packages, created workarounds for database version differences, and optimized queries
  • Developed Apex applications for broker pools to manage and optimize Oracle databases in the banking environment, including SSO-based authorization systems with OAuth2 and Keycloak
  • Built extensive Oracle Apex applications for BI and data mining modernization projects and developed manual and automated projection methods in the frontend
  • Carried out data warehousing projects in the banking sector and used Scrum and Kanban in team projects
Verified expert

Heinz-Dieter Lühmann

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Consultant

Düsseldorf
Heinz-Dieter Lühmann

Last position:

Consultant at CH Crypto Group

  • Advice on governance and information security topics: BAIT, MaRisk
  • Creating governance documents (policies, guidelines)
  • Developing emergency manuals
  • Based on BSI IT baseline protection standard 200-4 and ISO2700x
Verified expert

Werner Hendricks

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Oracle Database Migration Consultant

Ratingen
Werner Hendricks

Last position:

Insurance

  • Migrations of DB2 databases to Oracle
  • Design and creation of new databases based on ODA X7-HA / X9-HA RAC 12cR2 - 19.23 / Data Guard / Grid Infrastructure 19c
  • Hardware: ODA X7 X9 / IBM
  • Software: Oracle 12c-19.23 / Oracle Linux Enterprise 7.1–8.8

Discover over 15,000 top freelancers

Statistics of experts using X++

Aggregated from the professional profiles of matched freelancers.

Experience

25 years (Germany: 22 years)

Position duration

2.3 years (Germany: 2.2 years)

Positions per freelancer

17 (Germany: 16)

Top business areas

Information Technology, Operations, Project Management

Top industries

Information Technology, Automotive, Banking and Finance

Certification focus areas

Information Technology, Accounting, Audit

Bachelor's degree or higher

100% (Germany: 87%)

Master's degree or higher

33% (Germany: 49%)

Doctorate

33% (Germany: 6%)

Certifications per freelancer

6 (Germany: 4)

Most common languages

German, English, French

Speak two or more languages

67% (Germany: 91%)

Based on our profile pool as of 30 Aug 2026.

Daily rate distribution

0 1 2 3 4
<€720 €720-​800 €880-​960 €960+

The chart shows how the daily rates of freelancers in this technology in Dusseldorf are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows how many freelancers charge within that range.

Average rates of experts in Dusseldorf using X++

Rates are based on recent contracts and do not include FRATCH margin.

1000
750
500
250
Rate comparison chart
Daily rate avg. 884 €
Germany avg. 787 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

1000
750
500
250
Rate comparison chart
Median rate 880 €
Germany median 760 €

The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.

Calculated based on our freelancers’ daily rates as of 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.

About the technology

X++ in practice

X++ is the language used to extend Microsoft Dynamics 365 Finance and Operations and older Dynamics AX systems. Companies use it for business logic, data validation, forms, reports, batch jobs, and integrations that sit close to the ERP core.

Typical work

  • Customizing finance, supply chain, and operations workflows
  • Building extensions for forms, classes, tables, and services
  • Updating legacy AX code for Dynamics 365 FO
  • Solving performance issues in complex ERP logic

Ecosystem skills

Strong specialists know the Microsoft ecosystem around X++. They work with the Dynamics 365 developer tools, Visual Studio, model management, and extension patterns instead of unsafe overlayering. They also understand SQL, OData, APIs, and the ERP data model.

When to bring in help

Companies usually look for freelance support when upgrades are risky, a rollout needs extra hands, or internal teams need deep product knowledge fast. In Dusseldorf, this is common for organizations running regional finance, trading, logistics, or manufacturing processes on Dynamics.

What good work looks like

Good X++ professionals write clean extensions, keep changes upgrade-safe, and test how code behaves in the real ERP flow. They document business rules clearly and work well with functional specialists, release managers, and other technical experts.

Common project needs

A freelance specialist may be asked to fix a broken process, build a new integration, migrate AX customizations, or review code before a deployment. Clear requirements, access to a sandbox, and knowledge of the affected modules help the work move quickly.

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Frequently asked questions

Key details about X++, drawn from the questions we get asked most.

X++ is used to customize Microsoft Dynamics AX and Dynamics 365 Finance and Operations. It handles business rules, workflows, forms, batch jobs, reports, and integrations that need to run inside the ERP core. Companies choose it when standard setup is not enough.

X++ is the main language behind Dynamics AX development, but the product has moved on to Dynamics 365 Finance and Operations. Many professionals still say AX when they mean older code bases or legacy projects. For hiring, it helps to know whether the work is on AX, D365FO, or both.

X++ is built for the Dynamics ERP runtime, so it works differently from C# or AL. C# is often used for external services and tooling, while X++ is closer to the business data and processes inside Finance and Operations. If the work touches core ERP logic, X++ is usually the right skill.

A strong X++ specialist usually knows Dynamics 365 FO extension patterns, data entities, OData, and integration design. SQL, debugging in Visual Studio, and understanding finance, supply chain, or warehouse flows also matter. For older systems, Dynamics AX upgrade knowledge is valuable too.

The right level depends on the task. A small report fix needs less depth than an upgrade, a performance review, or a custom integration across modules. For business-critical ERP work, choose someone who has shipped similar X++ changes in live systems.

Most X++ work can be done remotely if the specialist has access to the right environments and business contacts. On-site time can help during workshops, go-lives, or when process owners need close coordination. In Dusseldorf, many teams use a hybrid setup.

Look for clean extension-based solutions, solid testing habits, and clear explanations of why a change is safe for upgrades. A good X++ professional should understand both code and business impact, not just syntax. Ask for examples from Dynamics AX or Dynamics 365 FO projects that match your situation.

If changes keep breaking during upgrades, performance is poor, or standard configurations cannot cover the process, X++ help is likely needed. Other signs are unclear legacy code, integrations that fail under load, or internal teams that lack deeper Dynamics AX or D365FO knowledge. Bringing in a specialist early usually saves rework.

The average hourly rate of freelancers in Dusseldorf, Germany who have used X++ in their recent projects is 110 €, which corresponds to a daily rate of about 884 € based on an 8-hour working day.

Of the freelancers in Dusseldorf, Germany who have used X++ in their recent projects, 100% hold at least a Bachelor's degree, 33% hold at least a Master's degree, and 33% hold a doctorate.

On average, freelancers in Dusseldorf, Germany who have used X++ in their recent projects have 25 years of professional experience, with a single engagement typically lasting around 2.3 years.

The most common languages among freelancers in Dusseldorf, Germany who have used X++ in their recent projects are German (100%), English (67%), and French (50%).

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

The most common business areas among freelancers in Dusseldorf, Germany who have used X++ in their recent projects are Information Technology (100%), Operations (83%), and Project Management (67%).

Main locations of FRATCH Experts, who have recently used X++

Our freelancers and interim experts are at home across the DACH region — available on-site in the major business hubs or fully remote. Choose a location to discover matched specialists, local market insights and up-to-date availability.

Berlin Hamburg Munich Cologne Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg

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