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# Backend / Integration Engineer (Legacy Systems)

- **Company:** LogicPlan B.V.
- **Location:** Amsterdam, Netherlands
- **Contract:** Temporary contract
- **Skills:** .NET Framework, Microsoft Windows, Artificial Intelligence, C Sharp (Programming Language), Data Transformation, JSON, Extensible Markup Language (XML), Backend, Windows Services, Restful APIs, Legacy Systems
- **Published:** June 24, 2026
- **Apply:** https://nl.indeed.com/viewjob?jk=6bad5482544a0420

## About the Role

* Deep C# / .NET (Windows Services, background workers, async, HttpClient)
 * Proven legacy integration experience, not just modern REST
 * REST integration and data transformation (XML, JSON, schema mapping)
 * Strong instincts for failure modes and reliability in distributed integration
 * Energized by moving fast with AI agents while keeping a high bar on what ships
 * EDI or logistics exposure is a plus, not required

## Description

Own and extend our integration layer across legacy systems. For each system you build a reliable connector that feeds data into LogicPlan in real time and keeps running in production. The first connector is a Windows service in C# / .NET that ingests orders from a customer's TMS over EDI., * Build connectors that ingest from legacy systems and map and validate heterogeneous XML and JSON into our normalized order model

 * Deliver into our REST API in near real time, idempotent and lossless under network failure
 * Handle failure with retries, exponential backoff and a dead letter path, no duplicated or dropped orders
 * Make it operable: structured diagnostics, health signals, configuration over hardcoding
 * Extend the layer to the next systems as we grow


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