Dynamics 365 Developer

Dynamics 365 Business Central Integration Developer - Contract - Open Budget

6+ years Dynamics NAV / Business Central, at least 3 on Business Central SaaS writing AL

Notice Period - Immediate

Experience - 6-10 years

Hiring Location - Zensar Location

We are looking for senior Business Central developers who build integrations properly - strong AL engineering on one side, the Azure integration stack on the other, and sound judgement about what belongs where.

The role

This is a hands-on build role for a developer who is genuinely strong in both halves of the job: writing well-structured AL inside Business Central, and building the Azure services that carry data in and out of it.

You will design and build integrations between Business Central and the systems around it - external partners, banks, logistics providers, e-commerce platforms and other line-of-business applications - using Azure Functions, Logic Apps, Service Bus, API Management and Azure storage. You will own flows end-to-end: the AL that creates and posts documents, the Azure components that move and transform data, and the error handling, telemetry, and replay that keep it supportable in production.

You will join a squad on a large Business Central programme to replace a legacy ERP and its integration layer, with several external interfaces to build and put live, and further work of the same kind to follow across the practice.

What you will be doing

Day to day, you will:

Build integration flows end to end - Business Central extensions on one side, Azure integration services on the other - from a written design and field mapping.

Develop AL extensions that create, update and post Business Central documents from inbound data, and extract data for outbound interfaces, without modifying the base application.

Build and expose APIs: Business Central API pages and custom APIs, and Azure-side endpoints fronted where appropriate by API Management.

Design the resilience: idempotency and duplicate detection, retry with backoff, dead-lettering, quarantine, and controlled replay once the underlying problem is fixed.

Externalise mapping and code-conversion tables so business users maintain them without a code change.

Instrument everything - Application Insights telemetry, correlation identifiers threaded from source message to posted document - so a production failure can be diagnosed without a debugger.

Write AL test code units covering the awkward cases as well as the happy path, then support system integration testing, UAT, cutover and hypercare.

What you will bring:

Business Central development

Six or more years across Dynamics NAV and Business Central, at least three of them on Business Central SaaS writing AL in Visual Studio Code.

Fluent across the object model - tables and table extensions, pages, codeunits, enums, interfaces, permission sets, install and upgrade codeunits - and disciplined about extending through events and subscribers rather than touching the base app.

Business Central API pages, custom API objects, OData v4, SOAP web services and webhook subscriptions, plus outbound HttpClient calls with OAuth 2.0, retry and timeout handling.

Job queue entries and background sessions for scheduled and batch processing, including how to keep long-running work inside platform limits and make it restartable.

XML and JSON handling in AL - XmlDocument and namespace resolution, JsonObject and JsonToken - and parsing or generating fixed-width and delimited files.

A real working knowledge of the data model you integrate into: sales and purchase documents and their posted counterparts, posting through the standard codeunits rather than writing ledger entries, inventory and warehousing, transfer orders, item tracking including programmatic serial and lot capture, and the payment journal and bank export framework.

Performance under volume: appropriate keys, SetLoadFields, set-based operations and an understanding of what locking does to a batch.

Extension packaging and lifecycle - per-tenant extensions, versioning, dependencies, app signing, and deployment across sandbox and production environments.

Azure integration services

Azure Functions as integration compute - HTTP, timer and queue triggers, durable patterns for longer orchestrations, and sensible configuration and scaling.

Azure Logic Apps for orchestration and connector-based workflow, and knowing when a Function is the better answer.

Azure Service Bus queues and topics: session…