Arlequin AI développe HuDex, une plateforme d’analyse de données multilingues et non structurées, et mène des travaux de recherche en apprentissage profond topologique. Ses outils s’adressent aux entreprises et aux organismes publics.
Fullstack Engineer
Am I a fit — voir ma compatibilitéArlequin AI recherche un ingénieur fullstack à Paris pour contribuer aux pipelines backend et aux interfaces frontend de sa plateforme IA. Le poste utilise notamment TypeScript, React, Node, PostgreSQL et Python, avec une présence sur site et une rémunération incluant une participation au capital.
Repères sur Arlequin AI
- Secteur
- Logiciels et Internet
- Modèle
- B2B
- Siège
- Paris
- Domaine officiel
- arlq.ai
- Dernière levée
- Série A · 2026-09-01
- Montant annoncé
- 31 000 000 $
- Offres ouvertes
- 10
Investisseurs mentionnés
Détails de l’offre
La description complète publiée par Arlequin AI.
Description de l’offre
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ENGINEERING
Fullstack Engineer
Contribute to both sides of our platform: ingestion pipelines and data processing on the backend, exploration and analysis interfaces on the frontend.
1–5 YEARS OF EXPERIENCE
FULL-TIME
ON-SITE IN PARIS
About Arlequin
Arlequin is building the sovereign European alternative to Palantir: an AI platform capable of processing massive data volumes without bias, with high-impact use cases such as fighting disinformation. Founded in late 2024 by Hugo Micheron (researcher in geopolitics and systemic risk) and Antoine Jardin (CNRS research engineer).
The role
You’ll join a team of around ten people to contribute to both sides of the platform — ingestion pipelines and data processing on the backend, exploration and analysis interfaces on the frontend. Our product (HUDEX) enables non-technical analysts to interpret narrative dynamics across large-scale digital ecosystems. You’ll work alongside senior engineers who mentor you on architecture, and you’ll quickly take ownership of complete features from end to end.
Stack
Frontend: React 19, TypeScript, Tanstack Router + Query, Vanilla Extract CSS
Backend: Hono, Node 24, Drizzle ORM, PostgreSQL, OpenAuth Build & infra: monorepo npm workspaces + Turbo, Vite, Docker, Azure Container Registry
Data : Python
Tests & quality: Jest, ESLint, Prettier, strict TypeScript
What we’re looking for
1–5 years of fullstack experience
Strong command of TypeScript and a modern React ecosystem
Comfortable with a Node backend and ORM (Drizzle, Prisma or equivalent)
A desire to understand architectural choices, not just execute
Professional English
Bonus
Already comfortable in a startup environment
Mastery of agentic coding tools and code models
Exposure to Python / AI
Experience with harness coding / implementation
Interest in emerging tools and paradigms
Fast learning on TypeScript codebases
Process (~2 weeks)
Screening (15 min)
Fit interview (30 min)
Technical interview (1h)
Founder culture fit (45 min)
Reference calls
Offer
Package
Competitive compensation including equity stake
On-site central Paris
Prérequis
- Strong command of TypeScript and a modern React ecosystem
- Comfortable with a Node backend and ORM
- A desire to understand architectural choices
Avantages mentionnés
- equity stake