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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # D365 F&O Developer (Part-time) - **Company:** Mobile Union Incorporation - **Location:** United States (Remote available) - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Business Software, C Sharp (Programming Language), Software Quality, Code Review, Data Synchronization, Relational Databases, Middleware, Microsoft Dynamics, Microsoft SQL Server, Systems Architecture, Systems Integration, Extensible Markup Language (XML), X++ (Programming Language), Microsoft Dynamics 365 Finance & Operations, Enterprise Integration, Docker - **Published:** July 31, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=2fcda5f5e5048eb0 ## About the Role Our Client operates a growing eCommerce business built on Microsoft Dynamics 365 Finance & Operations. As the number of ongoing projects continues to increase, they are looking for an experienced D365 F&O Developer to strengthen their internal engineering team and independently drive key development initiatives. This is a long-term part-time opportunity (20 hours/week) with the possibility of transitioning to full-time in the future, depending on business needs., * Senior-level commercial experience with Microsoft Dynamics 365 Finance & Operations (X++). * Solid commercial experience with C#. * Experience working with EDI/XML integrations, or the ability to quickly ramp up in this area. * Strong understanding of ERP integrations and business processes. * Ability to work independently and take ownership of development tasks. * Availability to collaborate during US business hours (GMT-5). * Good spoken and written English. Nice to have: * Experience building or consuming D365 endpoints and APIs. * Experience migrating legacy integrations or middleware solutions. * Familiarity with SQL Server and relational databases. * Experience working with Docker-based applications. * Understanding of eCommerce or retail business processes. * Experience integrating Microsoft Dynamics 365 with third-party platforms. ## Description D365 F&O Development * Design, develop, and maintain solutions using Microsoft Dynamics 365 Finance & Operations (X++). * Deliver new features and enhancements across the D365 platform. * Work independently on assigned development tasks with minimal supervision. * Troubleshoot and resolve technical issues across ERP integrations and business workflows. * Deliver clean, maintainable, and scalable code following best engineering practices. Integration Development * Support and extend EDI/XML integrations between D365 and third-party partners. * Develop and enhance XML-based import/export processes. * Participate in migrating existing middleware functionality into native D365 endpoints. * Collaborate on system integrations between D365 and external business applications. * Ensure reliable and efficient data synchronization across platforms. Architecture & System Design * Contribute to the modernization of existing system architecture. * Help replace legacy middleware with native D365 integration endpoints. * Participate in technical design discussions and propose scalable implementation approaches. * Balance performance, maintainability, and business requirements when delivering solutions. Code Quality & Collaboration * Follow development standards and best practices. * Participate in code reviews and technical discussions. * Work closely with the client's internal D365 developers throughout the development lifecycle. * Collaborate effectively with distributed teams during US business hours. ## Related Videos - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Developer’s Perspective: Overview of the Tezos Blockchain Ecosystem](https://www.wearedevelopers.com/videos/237-developer-s-perspective-overview-of-the-tezos-blockchain-ecosystem) - [Are Code Reviews Worth It? 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