{"id":2953675,"url":"https://alion.io/job/lemrock-ai-engineer","title":"AI Engineer","company":{"id":4404133,"name":"Lemrock","domain":"lemrock.com","url":"https://alion.io/company/lemrock","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":null},"role":"AI/ML","role_family":"AI/ML","seniority":"junior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Paris, France"],"countries":["FR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":2,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"Claude Code","optional":false},{"name":"Cursor","optional":false},{"name":"Fine-tuning","optional":false},{"name":"NLP","optional":false},{"name":"Recommender Systems","optional":false},{"name":"Anthropic","optional":true},{"name":"ChatGPT","optional":true},{"name":"CI/CD","optional":true},{"name":"Docker","optional":true},{"name":"GCP","optional":true},{"name":"LangChain","optional":true},{"name":"LLM","optional":true},{"name":"OpenAI","optional":true},{"name":"Perplexity","optional":true},{"name":"PostgreSQL","optional":true},{"name":"Redis","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-10-02T18:29:28Z","employer_posted_date":"2026-10-02","last_verified_at":"2026-10-22T06:15:29Z","board_verified":true,"closed_at":null,"days_open":19,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":19},"description":"Who we are\nLemrock builds the infrastructure of agentic commerce.\nTomorrow, 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.\nFor brands, this is a major shift: if they are not present in these environments, they become invisible.\nOur mission: enable any brand to exist, sell and distribute in this new channel.\nWe 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.\nToday, Lemrock is already:\n100M+ conversations per month\n\n150+ brand clients\n\na $100B market structuring at high speed\n\nContext\nYou'll join a tight-knit team with high product standards and direct access to production deployment: our models are tested in real-world conditions, with several million users each month, with very short cycles between prototyping, integration and deployment.\nIn this context, you'll work on the next generation of agentic and recommendation systems: building the pipelines, agents, and models that sit at the core of our product.\nYour Mission\nYour goal is to build and scale the agentic infrastructure that powers Lemrock's commerce intelligence: turning raw signals into automated, self-improving systems at production scale.\nConcretely, you will:\nAnalyze large-scale conversational interaction datasets (100M+ events/month) to uncover behavioral patterns, intent signals, and performance drivers.\n\nDesign and deploy agentic pipelines end-to-end, from data ingestion and enrichment to model orchestration, monitoring, and continuous improvement, integrated into systems exposed to millions of requests daily.\n\nBuild autonomous agents that keep our knowledge infrastructure accurate and current.\n\nTranslate insights into iteration loops in production, by updating, fine-tuning, and improving our existing recommendation and ranking algorithms with tight constraints on latency, robustness, and business outcomes.\n\nDesign and train new recommendation models from scratch when needed, with a focus on scalability, evaluation rigor, and deployability in real-world traffic.\n\nCandidate Profile\nStrong academic background (MVA, ENS, X, Central…)\n\n2+ years of experience in AI, Agentic Systems, ML / Deep Learning, statistics or NLP\n\nExperience prototyping and deploying AI models into production\n\nExperience with production systems (APIs, monitoring, optimization)\n\nStrong interest in LLMs, recommendation and conversational systems: building agentic pipelines, agent orchestration, fine-tuning\n\nComfortable with AI coding tools (Claude Code, Cursor)\n\nThrives in ambiguity and 0-to-1 environments\n\nFluent in English; French is a plus\n\nTech Stack\nML/AI (required)\nAgentic frameworks (e.g., Langchain) and/or native SDKs like OpenAI/Anthropic\n\nObservability and evaluation for LLM/agent workflows\n\nVector search, scoring, prompting, LLM orchestration\n\nHybrid recommender systems, causal inference, probabilistic models\n\nBonus (appreciated but not required)\nTypeScript\n\nEngineering: Docker, GCP, PostgreSQL, Redis, Vector DBs, PostHog\n\nCI/CD\n\nWhy Join Us\nJoin a company in early breakout mode, already generating revenue, with a clear technological edge and strong financial backing to fuel its growth\n\nWork 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)\n\nBe part of the next structural shift of the web: agentic interfaces\n\nOwn mission-critical topics, grow fast, and shape the company's future trajectory\n\nPackage\nCompetitive salary disclosed during the interview process.","description_format":"text","description_chars":3802,"description_truncated":false,"requirements":{"experience_years_min":2,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"English","level":"Advanced (C1)","optional":false}]},"benefits":[],"hiring_locations":[{"name":"France","iso":"FR","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Artificial Intelligence","Commerce","LLM & Generative AI"],"lifecycle":[{"event":"open","at":"2026-10-20T20:48:20Z"}],"visa":[],"liveness":{"score":57,"band":"ok","label":"Likely open","p_open":1,"p_active":0.765,"p_room":0.75,"age_days":19,"expected_fill_days":20,"reasons":["conf:3","velocity","win:late","comp:junior"],"computed_at":"2026-10-22T06:10:10Z"},"pay":null,"html_url":"https://alion.io/job/lemrock-ai-engineer","json_url":"https://alion.io/job/lemrock-ai-engineer.json","meta":{"generated_at":"2026-10-22T08:42:30Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":4977,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-23T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":4404133},"rest":"https://alion.io/mcp/rest/get_company?id=4404133"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Flemrock-ai-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Flemrock-ai-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Flemrock-ai-engineer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/lemrock-ai-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Flemrock-ai-engineer"}]}