Vibe Coder & QA Engineer

October 9, 2026

Hybrid

Middle

Paris, France

May rule you out

Another language required
French

Worth knowing

Mandatory office attendance
Includes a test assignment

Description

The company is a new French startup building an MCP product that lets AI agents integrate and automate any website through browser automation scripts running in the user's own Chrome. Three experienced repeat founders have raised over €2.6 million for the venture. The company is hiring a Vibe Coder & QA Engineer to build automation scripts and small apps while hardening agent output through audits, error classification and continuous testing. The role is based in Paris with possible partial remote and a CDI contract.

Responsibilities

Write and maintain automation scripts for the production script catalog: new sites, new use cases and fixing broken scripts
Build small discovery apps inside the product using TypeScript/React/Node and Postgres
Audit and classify production errors at scale across thousands of runs: broken script, external site failure, bad AI decision or bad user input
Build classifiers, often LLM judges, that distinguish error categories automatically and stress-test their reliability
Write end-to-end test scenarios running on a loop to catch regressions before customers do
Dig into ambiguous cases by hand, turn them into reusable rules and document recurring bug patterns

Requirements

Native-level fluency in French as an explicit, non-flexible requirement
Exceptionally comfortable vibe coding, driving an AI agent such as Claude Code to produce working code fast
Real personal or professional track record using Claude Code, Cursor, Copilot or ChatGPT to code
Ability to iterate: read an error, understand what broke and rephrase the request without restarting
Rigorous and genuinely curious about why something breaks rather than treating the symptom
Curious and autonomous, unafraid to dive into an unfamiliar website to automate it
Hands-on experience with LLMs: prompt engineering, LLM-as-judge and model evaluation
Background in web automation with Playwright, Selenium or an equivalent tool
Ability to reason through ambiguous data and write a clear analysis, not just ship code

Conditions

CDI full-time contract
Location: Paris, 124 Rue Réaumur
Start date: as soon as possible
Possible partial remote
Presence in the Paris office required at least a few days a week
A role spanning both building and reliability within a small team

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