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About the Role
Lemrock is building the infrastructure for agentic commerce, enabling brands to exist and sell within conversational AI interfaces. You will work on the next generation of agentic and recommendation systems, building the core product pipelines, agents, and models. Your goal is to scale the agentic infrastructure that powers Lemrock's commerce intelligence.
Responsibilities
- Analyze large-scale conversational interaction datasets to uncover behavioral patterns, intent signals, and performance drivers.
- Design and deploy agentic pipelines end-to-end, from data ingestion and enrichment to model orchestration, monitoring, and continuous improvement.
- Build autonomous agents that keep the knowledge infrastructure accurate and current.
- Translate insights into iteration loops in production by updating, fine-tuning, and improving recommendation and ranking algorithms with tight constraints on latency, robustness, and business outcomes.
- Design and train new recommendation models from scratch with a focus on scalability, evaluation rigor, and deployability in real-world traffic.
Requirements
- 2+ years of experience in AI, Agentic Systems, ML / Deep Learning, statistics or NLP
- Experience prototyping and deploying AI models into production
- Experience with production systems (APIs, monitoring, optimization)
- Strong interest in LLMs, recommendation and conversational systems: building agentic pipelines, agent orchestration, fine-tuning
- Comfortable with AI coding tools (Claude Code, Cursor)
- Thrives in ambiguity and 0-to-1 environments
- Fluent in English; French is a plus
Skills
- ML/AI
- Agentic frameworks (e.g., Langchain)
- Native SDKs like OpenAI/Anthropic
- Observability and evaluation for LLM/agent workflows
- Vector search, scoring, prompting, LLM orchestration
- Hybrid recommender systems, causal inference, probabilistic models
- TypeScript
- Docker
- GCP
- PostgreSQL
- Redis
- Vector DBs
- PostHog
- CI/CD
Experience Level
- 2+ years of experience
Education Level
- Strong academic background (MVA, ENS, X, Central…)
Salary/Compensations
- Competitive salary disclosed during the interview process.
About the Company
- Lemrock builds the infrastructure of agentic commerce.
- Tomorrow, consumers won't just buy on e-commerce websites. They will discover, compare and purchase directly inside conversational AI interfaces like ChatGPT, Perplexity, and a growing long tail of specialized AI assistants.
- For brands, this is a major shift: if they are not present in these environments, they become invisible.
- Our mission: enable any brand to exist, sell and distribute in this new channel.
- We raised a €7M seed round (the first in Europe on this market), with Jean-Baptiste Rudelle, founder of Criteo, on our board, and the Bpifrance DeepTech label.
- Today, Lemrock is already: 100M+ conversations per month, 150+ brand clients, a $100B market structuring at high speed.
- Join a company in early breakout mode, already generating revenue, with a clear technological edge and strong financial backing to fuel its growth.
- Work directly with an experienced team: two repeat YC founders who've scaled product & tech before, a former strategy/innovation director (10 years in the sector), and ex-strategy consultants (McKinsey QuantumBlack, BCG).
- Be part of the next structural shift of the web: agentic interfaces.
- Own mission-critical topics, grow fast, and shape the company's future trajectory.