About the role

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.

What you'll do

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.

What we're looking for

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.

Nice to have

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.

Education & certifications

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.

What you'll get

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

B. Braun Medical, S.A. U. | Aitana Altuna

Additional information

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.

Senior ERP Backend Engineer

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