Business Central / AL Developer (ID: 4061)

As a Mid-to-Senior Business Central / AL Developer, you will:

• Own the expansion of the automated test suite for an existing production-grade Microsoft Dynamics 365 Business Central extension.
• Develop and enhance Business Central extensions using the AL programming language.
• Raise automated test coverage substantially across an existing codebase using the Business Central test framework.
• Develop logging and audit-trail capabilities, including PII masking and immutable logging.
• Implement observability and monitoring using Azure Monitor.
• Develop and harden CI/CD pipelines and deployment automation using GitHub Actions and AL-Go for GitHub.
• Implement infrastructure as code using Azure services and ARM templates or comparable technologies.
• Work on Azure Key Vault integration and secure management of application secrets and configuration.
• Work on the configuration and administration interface, including clear separation between sandbox and production environments.
• Develop the white-label branding framework and prepare the Business Central extension for AppSource packaging.
• Support quality assurance activities with an approximate allocation of 60% development and 40% QA.
• Contribute to bringing an existing productive Business Central extension to bank-grade production quality, including security validation and formal user acceptance testing.
• Work with a codebase of approximately 265 AL objects and 40,000 lines of code across the current Business Central major version and an older on-premise BC13 backport track.
• Work with existing automated tests comprising approximately 165 tests across 22 test files and substantially expand the current approximately 40% test coverage.
• Work with GitHub, Jira, Azure DevOps and approximately 19 existing GitHub Actions workflows.
• Work with integrations including corporate bank APIs using mTLS and OAuth2, ISO 20022 camt processing and third-party PSD2 aggregation.

What You Bring to the Table:

• Strong hands-on experience with Microsoft Dynamics 365 Business Central and AL development.
• Proven experience developing and maintaining Business Central extensions in production environments.
• Demonstrable experience with the Business Central automated test framework and increasing test coverage on an existing codebase.
• Strong experience with test automation and quality assurance within Business Central development projects.
• Hands-on experience with GitHub Actions and preferably AL-Go for GitHub.
• Experience with Azure services including Azure Key Vault and Azure Monitor.
• Experience with infrastructure as code using ARM templates or comparable technologies.
• Strong understanding of CI/CD, deployment automation and pipeline hardening.
• Experience working with production-grade software where security, reliability, testing and release quality are critical.
• Disciplined documentation practices, with the ability to produce technical documentation and architecture/development decisions throughout the engagement.
• Professional written and spoken English.

You should possess the ability to:

• Take ownership of QA and automated testing rather than limiting your contribution to manual testing.
• Analyse an existing Business Central codebase and identify opportunities to increase automated test coverage.
• Design and implement reliable automated tests for Business Central functionality.
• Build maintainable CI/CD workflows and improve existing deployment pipelines.
• Implement secure logging, audit trails and PII masking.
• Configure monitoring and observability for production-grade applications.
• Work with secure authentication and integration mechanisms such as OAuth2 and mTLS.
• Handle certificates, secrets and security-sensitive configuration appropriately.
• Separate sandbox and production configurations and deployment processes.
• Prepare Business Central extensions for AppSource technical validation and packaging.
• Perform or support performance testing and production-readiness activities.
• Work independently while maintaining clear technical documentation and communicating decisions effectively.
• Work full-time on a dedicated basis without parallel project allocation.
• Maintain continuity throughout the engagement and participate in a documented handover if substitution is required.
• Work within EU/EEA data-handling requirements and use client-provided environments for development, storage and processing.
• Maintain confidentiality and comply with NDA, IP assignment and non-subcontracting requirements.
• Maintain at least six hours of working-time overlap with Central European Time.

What we bring to the table:

• Established Jira-based backlog management with defined epics and stories.
• Documentation templates, technical standards and an architecture decision record process.
• An opportunity to work on a production-grade Business Central solution involving Azure, banking APIs, secure authentication and automated quality assurance.
• Potential follow-on maintenance work following successful completion of the delivery engagement.
• A technically focused environment with significant scope for improving automated testing, observability, infrastructure automation and production readiness.