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FHIR Backend Developer | .NET

Oud Zuid, Amsterdam💼 Full-time🗓 2026-06-13 → 2026-09-01

Core

Building and improving the Firely Server, an enterprise-grade FHIR server product that enables healthcare organizations to exchange health data reliably.

Role type

Backend Developer (.NET)

Builds

New features and performance improvements for the Firely Server FHIR product

Domain

Healthcare technology / Health data exchange

Deliverable

production ML models | product features

Required skills

.NET / C# backend development, REST APIs, MS SQL Server, MongoDB, JSON/XML payload handling, AWS or Azure, Git

Preferred skills

HL7, FHIR, PostgreSQL, Azure Cosmos DB, AWS RDS, healthcare sector background

Technologies

.NET, C#, MS SQL Server, MongoDB, AWS, Azure, JSON, XML, Git, Jira, GitHub Projects

Responsibilities

Design and implement backend features, work with REST APIs, write and optimize database queries, handle and validate JSON/XML payloads, contribute to code reviews and architectural decisions

Seniority

Mid-level, hands-on IC

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