Senior Backend Engineer

🕒 May 22

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Nelly Solutions

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2021

☁️ SaaS

💳 Fintech

🤖 Artificial Intelligence

💰 $51.5M Series B - Nelly on 2025-01

SaaS • Fintech • Artificial Intelligence

Nelly Solutions is a Berlin-based SaaS platform that automates administrative and financial workflows for medical and dental practices. The company provides a digital patient journey (mobile/web intake, e‑consent, e‑signatures), AI-powered real-time clinical documentation, integrations with practice management systems, and a fintech stack that includes digital payments, card terminals, and factoring (including KV/KZV payouts). Nelly emphasizes data security and GDPR-compliant hosting in Germany and serves thousands of practices to reduce paperwork, speed up billing, and improve cash flow.

📋 Description

• Design and build ingestion pipelines that pull data from third-party PMS systems into Nelly's core data model. • Own backend services in TypeScript/Node.js on AWS - event-driven, idempotent, observable. • Evolve the canonical data model that every product team at Nelly builds on. • Build the MCP servers and AI tooling that expose Core Data to internal agents and LLM-powered workflows - a chance to shape how AI ships at Nelly. • Partner with product teams to triage and resolve ingestion issues by impact.

🎯 Requirements

• 8+ years backend-leaning experience, strong TypeScript/Node.js. • Deep experience with data pipelines, ETL/ELT, and third-party integrations (queues, retries, idempotency, schema evolution). • Strong data and API modeling - you've designed schemas that survived three product pivots. • AWS in production. • Bonus: healthcare/fintech data, event sourcing, MCP/LLM tooling experience.

🏖️ Benefits

• BVG ticket or a Swapfiets membership to cruise through the city • Urban Sports membership to sweat, stretch, or sauna your way through the week • Top of the line working equipment • Flexible hours and a hybrid setup in the heart of Berlin • Enjoy up to 4 weeks of workation wherever inspiration hits • A cozy, dog-friendly office where good vibes are basically mandatory • A fridge full of cold drinks and snacks waiting to be claimed