{"id":2026572,"url":"https://alion.io/job/licornesociety-llm-engineer","title":"LLM Engineer","company":{"id":3908658,"name":"Licorne Society","domain":"licornesociety.com","url":"https://alion.io/company/licornesociety","size_band":"11-50","is_staffing_agency":true,"employer_type":"agency","is_intermediary":false,"listed_via":null,"ats_vendor":"Welcome to the Jungle","truth_index":null},"role":"AI/ML","role_family":"AI/ML","seniority":null,"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":{"min_usd":64000,"max_usd":133000,"period":"year","method":"role_country_seniority_unknown","sample_n":94},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Azure","optional":false},{"name":"FastAPI","optional":false},{"name":"GCP","optional":false},{"name":"LangChain","optional":false},{"name":"Langfuse","optional":false},{"name":"LangGraph","optional":false},{"name":"LLM","optional":false},{"name":"OpenAI","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false}],"status":"live","first_seen_at":"2026-08-12T12:14:27Z","employer_posted_date":"2026-10-07","last_verified_at":"2026-10-12T14:15:16Z","board_verified":true,"closed_at":null,"days_open":61,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":61},"description":"Join our team as an LLM Engineer, where you will be responsible for designing and evolving our LLM/agent architecture, owning output quality across key use cases, building evaluation systems, driving fast iteration loops from production data, improving retrieval, reasoning, and tool usage, ensuring production reliability, and working directly with product and founders. You will turn vague user problems into structured AI systems with measurable performance that improve every week.\nMissions\nDesign and evolve the LLM/agent architecture, ensuring output quality across key use cases.\nBuild evaluation systems, drive fast iteration loops from production data, and improve retrieval, reasoning, and tool usage.\nWork directly with product and founders to define what to build and why, turning vague user problems into structured AI systems.\nProfil recherché\nWe are building the AI coworker for legal and professional services - automating emails, document analysis, and complex workflows in high-stakes industries.\nWe are not looking for someone to “use GPT APIs.” We are looking for someone to own and scale a production AI system that users rely on daily.\nWhat you will own\nYou will be responsible for one primary outcome: making our AI outputs reliable, fast, and indispensable in real workflows.\nConcretely:\nDesign and evolve our LLM / agent architecture.\nOwn output quality across key use cases (emails, document analysis, etc.).\nBuild evaluation systems (datasets, metrics, regression detection).\nDrive fast iteration loops from production data.\nImprove retrieval, reasoning, and tool usage.\nEnsure production reliability (latency, failure modes, fallbacks).\nWork directly with product and founders on what to build and why.\nWhat this role is really about\nMost teams fail because they don’t know what “good output” means, lack proper evals, iterate randomly, or overuse agents.\nYour job is to fix that. You will turn vague user problems into structured AI systems with measurable performance that improve every week.\nWhat You Need to Be Excellent At\nShipping Real LLM Systems\nEvaluation-Driven Development\nDebugging Complex Failures\nSpeed of Iteration\nStrong Technical Judgment\nWhat we don’t care about\nNumber of years of experience.\nWhether you’ve used a specific framework.\nFancy research credentials.\nIf you can build, debug, and improve real systems, you’re a fit.\nWhat success looks like (First 90 Days)\nA clear evaluation framework established for core use cases.\nMeasurable, quantitative improvement in output quality.\nFaster iteration cycles across the team.\nSignificantly reduced hallucinations and failure modes.\nRobust, scalable system architecture decisions.\nTech Stack (Context, Not Strict Requirements)\nLanguage/Backend: Python (FastAPI)\nDatabase: Postgres\nCloud: Google Cloud Platform (GCP)\nOrchestration: LangGraph / LangChain (evolving)\nObservability: PostHog (analytics), Langfuse (LLM tracing)\nLLM Infrastructure: Azure OpenAI / Multi-provider APIs","description_format":"text","description_chars":2973,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"France","iso":"FR","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-07T13:29:32Z"}],"visa":[],"liveness":{"score":14,"band":"cold","label":"Long shot","p_open":1,"p_active":0.227,"p_room":0.6,"age_days":60,"expected_fill_days":69,"reasons":["conf:4","agency","velocity","win:late","crowd:"],"computed_at":"2026-10-12T06:55:09Z"},"pay":null,"html_url":"https://alion.io/job/licornesociety-llm-engineer","json_url":"https://alion.io/job/licornesociety-llm-engineer.json","meta":{"generated_at":"2026-10-12T18:28:59Z","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":29873,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-13T00:00:00Z"}},"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":3908658},"rest":"https://alion.io/mcp/rest/get_company?id=3908658"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Flicornesociety-llm-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%2Flicornesociety-llm-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%2Flicornesociety-llm-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/licornesociety-llm-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Flicornesociety-llm-engineer"}]}