Senior ERP Backend Engineer en España

Senior ERP Backend Engineer - Microsoft Dynamics 365 Finance & Supply Chain Management / ERP Platform

The Senior ERP Backend Engineer will design, build, extend, integrate, and support backend components for the Microsoft Dynamics 365 Finance & Supply Chain Management ERP platform. The role requires hands-on engineering capability in X++, extension-based customization, ERP integrations, reporting, performance optimization, and application lifecycle management. The position is intended for a developer who can translate functional requirements into reliable technical solutions while protecting upgradeability, stability, security, and maintainability of the ERP template.

Core expectation: This is not a generic backend developer role. The successful candidate must be a Dynamics 365 ERP technical specialist who can build APIs, reports, integrations, extensions, and performance-safe customizations within Microsoft ERP best practices.

• Design and develop Dynamics 365 FSCM extensions using X++ and standard extension patterns; avoid overlayering unless explicitly justified and approved.
• Customize forms, tables, data entities, classes, workflows, business events, batch jobs, and extensions to meet approved business requirements.
• Develop clean, reusable, testable code that follows naming conventions, version control discipline, and Microsoft development standards.
• Prepare technical specifications from functional designs and document assumptions, dependencies, risks, and deployment steps.
• Design, build, and maintain integrations using OData, REST APIs, Data Management Framework entities, business events, custom services, and batch-based integration patterns.
• Support Dual-write / Dataverse integration where required, including mapping awareness, error monitoring, and coordination with Power Platform or CRM teams.
• Integrate ERP with middleware and external systems such as MuleSoft, SAP, payment platforms, portals, mobile apps, reporting platforms, or third-party operational systems.
• Implement error handling, retry logic, logging, reconciliation, and monitoring approaches for reliable data exchange.
• Design and develop operational, statutory, and management reports using SSRS, electronic reporting, financial reports, data entities, and Power BI-ready datasets where applicable.
• Optimize report queries, joins, indexes, filters, and batch generation processes to reduce performance impact on production operations.
• Support data extraction and reconciliation for migration, analytics, audit, and business validation activities.
• Analyze and resolve performance bottlenecks in code, queries, integrations, batch jobs, reports, and customizations.
• Ensure all development is compatible with Microsoft update cycles and minimizes regression risk during platform upgrades.
• Perform unit testing, peer code reviews, technical impact assessment, and release readiness checks before deployment.
• Troubleshoot production issues, root-cause defects, and provide corrective actions with clear documentation.
• Use Azure DevOps for work items, branches, pull requests, build pipelines, release pipelines, version control, and deployment coordination.
• Support packaging, build validation, deployment notes, release approvals, rollback planning, and separation of DEV, TEST, UAT, and PROD changes.
• Collaborate with Scrum Master, Cloud / DevOps Engineer, QA Engineer, Functional Consultants, Product Owner, and Solution Architect to deliver sprint commitments.
• Support module setup and parameterization where technical configuration is required, especially for Finance, Procurement, Inventory, Warehousing, Sales, Supply Chain, manufacturing, tax, integrations, and security-related configurations.
• Advise on when to configure standard functionality, when to use extension development, and when to defer or redesign a requested customization.

• Strong hands-on X++ development experience in Dynamics 365 Finance & Operations / Finance & Supply Chain Management.
• Good understanding of ERP data models, entities, business processes, and transaction flows across Finance and Supply Chain modules.
• Experience with extension-based customization, event handlers, Chain of Command, data entities, services, batch framework, security roles, and deployment packages.
• Strong experience designing and consuming OData and REST APIs.
• Experience with Data Management Framework, custom services, business events, and batch integration patterns.
• Working knowledge of Dual-write, Dataverse integration concepts, and Power Platform integration patterns is strongly preferred.
• Experience with middleware / integration layers such as MuleSoft, Azure Integration Services, Logic Apps, Service Bus, or comparable platforms is an advantage.
• Experience developing SSRS reports for Dynamics 365 Finance & Operations.
• Ability to write efficient queries and support data extraction for operational reporting, reconciliation, and analytics.
• Power BI dataset or data model experience is an advantage.
• Practical Azure DevOps experience: repositories, branches, pull requests, work items, build and release pipelines.
• Understanding of CI/CD, environment promotion, source control discipline, code review, and release documentation.
• Ability to prepare technical specifications, deployment notes, test evidence, and support handover documentation.
• Ability to diagnose and optimize slow queries, batch jobs, reports, and integrations.
• Understanding of security roles, duties, privileges, segregation of duties impact, and least-privilege design.
• Strong awareness of upgrade compatibility, regression risk, and Microsoft ERP development lifecycle constraints.
• Minimum 5-8 years of backend / ERP development experience, including at least 3 years of hands-on Dynamics 365 Finance & Operations or Dynamics 365 FSCM technical development.
• Proven delivery of ERP integrations, customizations, reports, and production support in a multi-module ERP environment.
• Experience working in agile delivery teams using Azure DevOps or similar tooling.

• Experience in multi-company, multi-country, or template-based ERP rollout environments is highly desirable.
• Experience with Microsoft Dynamics AX 2012 upgrade or migration to Dynamics 365 is an advantage.
• Power Platform experience: Power Apps, Power Automate, Dataverse, custom connectors, and governance awareness.
• Azure services used for integration and operations: Logic Apps, Service Bus, Functions, Key Vault, Application Insights, API Management, and storage services.
• Knowledge of electronic reporting, tax localization, statutory integrations, or industry-specific operational systems.

• Bachelor's degree in Computer Science, Software Engineering, Information Systems, or a related technical discipline, or equivalent practical experience.
• Preferred: Microsoft Certified Dynamics 365 Finance and Operations Apps Developer Associate, or equivalent demonstrable experience.
• Preferred: Azure Developer / Azure Fundamentals / Power Platform Fundamentals certifications, where relevant.

Gross annual salary starting from €55,000, depending on the candidate's profile and experience.

To help you perform at your best, our offer focuses on your wellbeing, development and experience as part of the team:

• 10% variable bonus based on global and spanish company results
• Hybrid working model: 3 days working from home and 2 days in the office
• Flexible compensation: transport, childcare and private health insurance
• Intensive working hours on Fridays from June to September
• Flexible schedule
• Company-funded training and certifications based on individual and business needs
• Meal allowance and home-working allowance
• Free wellbeing platform including coaching, psychological consultations and emotional health content, with the option to extend access to family members at a discounted rate
• 30 calendar days of annual leave
• Benefits under the Chemical Industry Collective Agreement
• Life and accident insurance

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• Strong analytical and problem-solving capability with the ability to isolate technical issues quickly.
• Clear communication with functional consultants, business process owners, architects, QA, DevOps, and management stakeholders.
• Ability to challenge unnecessary customization and recommend standard, maintainable alternatives.
• Ownership mindset, documentation discipline, and ability to work independently in a cloud-first agile environment.
• Comfortable supporting urgent production issues while maintaining release discipline and auditability.