AI Engineer: Hybrid Paris, On‑Device GenAI & Equity

Mendo; Paris; Hybride; EUR 56 000 - 65 000; Plein temps

Avantages offerts par ce poste

BSPCE equity

Hybrid 2-day/3-day remote model

Competitive salary €56,000–€65,000

Résumé du poste

Mendo is hiring an AI/ML engineer to own the AI workstream for a product area. You will train, evaluate, and operate models and features that run in production, collaborating with CTO and engineering squads in a hybrid Paris setup.

With 3–5 years of ML/AI experience, you’ll fine-tune LLMs, manage data and evaluation, and maintain performance, cost, and latency. The role offers equity (BSPCE) and a strong learning culture.

Qualifications

• 3–5 years in ML / AI engineering, with models or AI features you shipped and then operated in production.
• Hands-on with LLM fine-tuning, RAG, and embeddings — and with evaluating them (golden sets, LLM-as-judge, regression tests).
• Experience monitoring and optimising AI systems in production for cost, latency, and quality.
• Solid software engineering fundamentals — tests, CI, observability — you operate what you ship.
• Comfortable in Python and able to work across a TypeScript product codebase.
• Experience with small language models (SLMs) and on‑device / on‑prem model deployment is a strong plus.

Responsabilités

• Train, fine‑tune, and evaluate our proprietary language models — including the small models that run on‑device.
• Curate and maintain the datasets, golden sets, and evaluation harnesses those models are judged against.
• Ship model updates into production and measure the result, rather than stopping at a promising notebook.
• Own the health of the AI features in production: quality, cost, and latency — and catch silent regressions before users do.

Connaissances

ML/AI engineering

Python

TypeScript

LLM fine-tuning

RAG & embeddings

Production monitoring

CI/CD

On-device deployment

French & English

Outils

HuggingFace Transformers

scikit-learn

TensorFlow

sentence-transformers

GitHub Actions CI/CD

Docker

Azure / AKS

WebLLM

llama.cpp (WASM)

Description du poste

Mendo is hiring an AI/ML engineer to own the AI workstream for a product area. You will train, evaluate, and operate models and features that run in production, collaborating with CTO and engineering squads in a hybrid Paris setup.

With 3–5 years of ML/AI experience, you’ll fine-tune LLMs, manage data and evaluation, and maintain performance, cost, and latency. The role offers equity (BSPCE) and a strong learning culture.