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Last seen on its board about 2 months ago, on September 14, 2026.

30

Senior AI Engineer — GenAI & Autonomous Agents

Jus Mundi · Paris, Ile-de-France, France

Full-time Hybrid Senior via WTTJ: full stack Ile-de-France

Description

⚙️ Preferred Experience and Skills

  • Applied AI Depth: Proven track record shipping LLM-powered features to production — API integration (OpenAI, Anthropic, Mistral) and open-source models (Hugging Face) — with clear, measurable impact.

  • Retrieval & RAG: Strong command of vector databases, retrieval and ranking, and RAG architecture, including how to actually improve relevance and evaluate it.

  • Agentic Systems (critical requirement): Deep, hands-on expertise designing and building agent orchestration loops — tool/function calling, memory, planning, error recovery, and state management. You must be able to point to something you have actually built and shipped in this space (custom architectures or frameworks like LangGraph, LangChain, LlamaIndex, AutoGen). This is more important to us than RAG experience alone; strong RAG skills without proven agent-building experience will not be sufficient.

  • Evaluation & Benchmarking (critical requirement): Deep, critical understanding of evaluation methodology — designing benchmarks, choosing and interpreting metrics, and building automated eval pipelines that reliably drive accuracy improvements. You should be able to reason about the limits of a given eval method, not just run one.

  • Fine-Tuning & Synthetic Data (critical requirement): Demonstrated experience fine-tuning models (LoRA/QLoRA), preparing training data, and generating synthetic data — plus the judgment to know when fine-tuning is and isn't worth it.

  • Engineering Foundations: Strong Python for AI and backend work, with enough full-stack fluency (TypeScript/Node, some React) to integrate AI into product surfaces end to end.

  • Systems Judgment: Scalable API design and a habit of building for graceful degradation, testability, and reproducibility.

  • Senior Behaviours: Turns vague business problems into technical roadmaps in collaboration with product, design, and stakeholders; communicates results clearly to non-technical audiences; mentors peers; and takes accountability for outcomes.

Nice to Have

  • Experience in legal-tech or another high-stakes, accuracy-critical domain.

  • Multilingual NLP / retrieval experience.

  • Model inference optimization (vLLM, TensorRT-LLM).

  • Cloud infrastructure (AWS, GCP, or Azure) and containerization.

  • Contributions to open-source AI projects or a strong portfolio of shipped AI applications.

Why 30?

Each component's contribution, and the phrases that triggered it.

Location fit +25.0

paris · ile-de-france

Seniority fit +20.0

senior

Engagement type +4.0
Compensation fit +3.0
Recency +0.09

posted 63 days ago

Red flags 0.0
Rails stack fit 0.0