{"id":2953676,"url":"https://alion.io/job/lemrock-founding-full-stack-software-engineer","title":"Founding Full-stack Software 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":"Backend","role_family":"Backend","seniority":"middle","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":40000,"max_usd":79000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":21},"experience_years_min":4,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Claude Code","optional":false},{"name":"Clean Architecture","optional":false},{"name":"Cursor","optional":false},{"name":"TypeScript","optional":false},{"name":"AI Agents","optional":true},{"name":"ChatGPT","optional":true},{"name":"Docker","optional":true},{"name":"Embeddings","optional":true},{"name":"GCP","optional":true},{"name":"Google BigQuery","optional":true},{"name":"Google Cloud Run","optional":true},{"name":"JavaScript","optional":true},{"name":"LLM","optional":true},{"name":"Nest.JS","optional":true},{"name":"Node JS","optional":true},{"name":"Perplexity","optional":true},{"name":"PostgreSQL","optional":true},{"name":"Radix UI","optional":true},{"name":"React.js","optional":true},{"name":"Redis","optional":true},{"name":"shadcn/ui","optional":true},{"name":"Tailwind CSS","optional":true},{"name":"Terraform","optional":true},{"name":"Vite","optional":true}],"status":"live","first_seen_at":"2026-08-27T14:32:00Z","employer_posted_date":"2026-08-27","last_verified_at":"2026-10-22T21:14:57Z","board_verified":true,"closed_at":null,"days_open":56,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":56},"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 small, high-ownership engineering team building production systems that serve millions of users. We care deeply about code quality and clean architecture - and we intend to keep it that way as we scale.\nYour Mission\nYour goal is to build and ship the product that powers Lemrock's commerce infrastructure - with full ownership, from design to production. Concretely, you will:\nShip features end-to-end that reach millions of users - from data model and API design to the interface they interact with.\n\nScale and harden our backend as traffic, integrations, and product complexity grow.\n\nShape the architecture of the codebase - enforce clean boundaries, maintain modularity, and make decisions that compound as the team scales.\n\nMove fast across the stack - backend, frontend, infra, data - wherever the highest-impact work is on any given week.\n\nCandidate Profile\nStrong academic background, proven professional track record, or hands-on entrepreneurial experience\n\n2+ years of hands-on software engineering experience\n\nDeep proficiency in TypeScript\n\nExperience with structured backend architectures (DDD, hexagonal, or similar)\n\nHas owned features end-to-end: data model → API → frontend → deployment\n\nComfortable with AI coding tools (Cursor, Claude Code)\n\nThrives in ambiguity and 0-to-1 environments - ex-founders or entrepreneurial mindsets are a strong fit\n\nProfessional proficiency in French & English\n\nTech Stack\nCore (required)\nTypeScript, NestJS, React\n\nPostgreSQL, Redis\n\nDocker\n\nClean architecture patterns (hexagonal, ports & adapters)\n\nBonus (appreciated but not required)\nGCP (Cloud Run, Pub/Sub, BigQuery), Terraform\n\nVector databases, embeddings, LLM integrations\n\nDomain-Driven Design (DDD), CQRS\n\nTanStack (Router, Query, Table), shadcn/ui, Tailwind, Vite\n\nDurable workflows (Inngest, Temporal)\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 + equity, disclosed during the interview process.","description_format":"text","description_chars":3207,"description_truncated":false,"requirements":{"experience_years_min":4,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"French","level":"Advanced (C1)","optional":false}]},"benefits":["Equity"],"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":12,"band":"cold","label":"Long shot","p_open":1,"p_active":0.445,"p_room":0.28,"age_days":55,"expected_fill_days":20,"reasons":["conf:3","velocity","win:tail","crowd:junior"],"computed_at":"2026-10-22T06:10:10Z"},"pay":null,"html_url":"https://alion.io/job/lemrock-founding-full-stack-software-engineer","json_url":"https://alion.io/job/lemrock-founding-full-stack-software-engineer.json","meta":{"generated_at":"2026-10-23T01:04:29Z","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":1804,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-24T00:00:00Z"}},"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-founding-full-stack-software-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-founding-full-stack-software-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-founding-full-stack-software-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-founding-full-stack-software-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Flemrock-founding-full-stack-software-engineer"}]}