Senior AI Engineer

produtos nelly | produtos de limpeza; Berlin; Hybrid; EUR 110.000 - 160.000; Vollzeit

Benefits dieser Stelle

Deutschlandticket

Urban Sports Club

Hybrid setup

Workation

Dog-friendly office

Snacks & drinks

Zusammenfassung

Nelly is hiring an AI Engineer in Berlin to join a small, agile team building an AI-enabled fintech for healthcare. You will shape the AI division, develop cutting-edge systems, and scale production data pipelines from prototypes to robust production solutions.

The role blends deep ML theory with practical cloud and data engineering, driving GenAI initiatives while maintaining a pragmatic product focus. English fluency is required.

Qualifikationen

• 8+ years building and operating backend systems in production.
• Strong Python skills and production experience.
• 3+ years shipping LLM/GenAI features to users (RAG, tool use, agent frameworks).
• Deep ML fundamentals and model evaluation.
• Distributed systems design: APIs, data modeling, high-throughput async systems.

Aufgaben

• Lead architecture decisions for AI systems and data pipelines.
• Ship GenAI features to users with strong product focus.
• Mentor engineers and establish engineering best practices.

Kenntnisse

Python

TypeScript

GenAI features

LLM frameworks

Distributed systems

Self-evolving agents

Cloud native

English fluency

Tools

AWS

GCP

Dagster

Airflow

Prefect

Jobbeschreibung

We’re on the lookout for an ambitious AI-Engineer to join our Engineering team at our office in Berlin. Join us in building the largest AI enabled fintech for healthcare!

What to expect in the role as Senior AI Engineer:

As part of our freshly launched AI division at Nelly, where you'll be one of the pioneers shaping our future in AI. In a small, agile team, you'll work on developing cutting-edge AI systems and robust data pipelines—from rapid prototypes to scalable production solutions. This role is ideal for someone who combines deep ML theory with practical cloud and data engineering know-how, and who can drive innovative GenAI initiatives while keeping a pragmatic product focus.

About Nelly

We are building the AI-Driven Financial Operating System for European healthcare, solving the biggest challenges for patients and practices. We create what no bank or software platform can handle. Our all-in-one platform transforms chaotic administrative processes into intelligent, automated workflows, from patient care to billing to next-generation payments. Because we truly believe: healthcare should be less about paperwork and more about people.

Why?

Because Europe is facing a massive shortage of medical professionals. And if we don't rethink the way practices work, the system won't be able to keep up. With our Series B funding of over €50 million from world-class investors, we are turning our vision into reality.

What sets us apart:

We work with the best team, which is why we give everything together every day. We believe in Talent Density, because exceptional people make everyone around them better. At Nelly, we move fast and expect everyone to keep up. Stagnation isn’t an option, which is why we invest heavily in growth. AI isn't a nice-to-have at Nelly. We expect you to use it every day and give you everything you need to do so. You get trust and ownership and we expect you to speak up, even when it's uncomfortable.

What you’ll bring:

• Technical leadership mindset with high agency and proactive drive—obsessed with building world-class systems and enabling teams to ship exceptional user experiences.
• 8+ years building and operating backend systems in production (strong Python skills required - ideal as well: TypeScript for integration work), with 3+ years shipping LLM/GenAI features to users (RAG, tool use, planning, agent frameworks e.g MCP, multi-agent systems).
• Strong ML fundamentals with hands-on experience in model evaluation, self-evolving agents (e.g Memory).
• Deep expertise in distributed systems design: API architecture, data modeling, high-throughput async systems, event-driven architectures, caching strategies, and performance optimization.
• Advanced retrieval engineering experience: embeddings, sophisticated chunking strategies, hybrid search algorithms, schema/metadata design, knowledge graphs, comprehensive eval frameworks, and production monitoring.
• Proven track record of technical leadership: driving architecture decisions, mentoring engineers, and establishing engineering best practices.
• Experience with cloud native development at scale, ideally AWS, but GCP is a strong plus, too.
• Excellent communication skills in English with ability to articulate complex technical concepts to diverse audiences.

Bonus skills:

• Experience with modern data workflow orchestration frameworks such as Dagster, Airflow, or Prefect, with emphasis on building robust, dependency-aware pipelines at scale.
• Track record of technical writing, open-source contributions, or speaking at industry events.
• Fluent German is a big plus, to improve the interaction between you and our user base.

What we offer:

• Deutschlandticket (public transport pass covering all of Germany) or Swapfiets membership, so you get around the city fast
• Urban Sports Club membership, for sport and balance
• Flexible working hours and a hybrid setup
• Up to 4 weeks of workation
• A dog-friendly office with great vibes and a team that's fun to work with
• Snacks and a fridge full of cold drinks

We welcome applications from people of all genders and backgrounds, regardless of origin or age. If you're convinced you're the right fit for this role - even if your CV doesn't match the requirements 100% - tell us why.