Senior Microsoft Dynamics 365FO Developer

Aircross IT; United States; On-site; USD 120,000 - 160,000; Full time

Job summary

Aircross IT is seeking a Senior Microsoft Dynamics 365 Finance & Operations Developer (X++) to design, develop, and optimize extensions in D365 F&O. You will collaborate with functional consultants to translate requirements into robust X++ solutions.

In this role, you’ll review designs, build and test integrations, and troubleshoot production issues, ensuring high performance and maintainability across finance and operations processes.

Qualifications

• Hands-on experience delivering and supporting X++ solutions in D365 F&O production environments.
• Strong knowledge of extension patterns, including Chain of Command and event handlers, and the ability to diagnose performance issues.
• Experience with Visual Studio, Azure DevOps, source control, and code reviews.

Responsibilities

• Review Functional Design Documents (FDDs) with functional consultants, clarify expected behavior, and estimate development effort.
• Build and maintain X++ extensions for business processes such as sales order processing, procurement, invoicing, and inventory management.
• Develop and troubleshoot integrations using data entities, APIs, and batch processing.
• Investigate production issues, identify root causes, and deliver fixes that preserve existing business processes.
• Test your changes and hand them back to the functional consultant with test results and deployment notes. Support the team through validation and release.

Skills

X++ development

D365 F&O

Performance debugging

Visual Studio

Azure DevOps

Source control

Code reviews

English communication

Tools

Visual Studio

Azure DevOps

Source control

Job description

Senior Microsoft Dynamics 365 Finance & Operations Developer (X++)

About Aircross IT

Aircross IT is a Microsoft Partner specializing in Dynamics 365 Finance & Operations (D365 F&O). We help clients and Microsoft partners implement, support, and improve their ERP systems across finance and supply chain operations.

About the role

We’re looking for a senior X++ developer to build enhancements and integrations and troubleshoot production issues in D365 F&O. You’ll work closely with functional consultants, who document business requirements, own configuration, and validate the completed development against the acceptance criteria.

What you’ll do

• Review Functional Design Documents (FDDs) with functional consultants, clarify expected behavior, and estimate development effort.
• Build and maintain X++ extensions for business processes such as sales order processing, procurement, invoicing, and inventory management.
• Develop and troubleshoot integrations using data entities, APIs, and batch processing.
• Investigate production issues, identify root causes, and deliver fixes that preserve existing business processes.
• Test your changes and hand them back to the functional consultant with test results and deployment notes. Support the team through validation and release.

What you’ll bring

• Hands-on experience delivering and supporting X++ solutions in D365 F&O production environments.
• Strong knowledge of extension patterns, including Chain of Command and event handlers, and the ability to diagnose performance issues.
• Experience with Visual Studio, Azure DevOps, source control, and code reviews.
• Clear written and spoken English and the ability to explain technical decisions to functional consultants.

Preferred qualifications

• Microsoft Certified: Dynamics 365: Finance and Operations Apps Developer Associate (Exam MB-500).
• Experience with Dynamics AX, 365, ISV, EDI integrations, or manufacturing and distribution environments.