Vibe Coder & QA Engineer

The job

To help us on our mission to democratize automations that create real business value, we are looking for an exceptional Vibe Coder & QA Engineer to join us. Reduck runs on a catalog of automation scripts, hundreds of scripts across dozens of sites, driven by AI agents and live in production for our customers. Two things matter equally for that catalog to grow well: shipping fast, and guaranteeing that what ships actually holds up in production. You'll join with one true requirement: being exceptionally comfortable vibe coding, meaning driving an AI agent (Claude Code or equivalent) to produce working code fast. From that shared foundation, the role splits into two intertwined missions:

Building automations, scripts and small apps Hardening what our agents produce through audit, bug classification and continuous testing

Building

Write and maintain automation scripts for the Reduck catalog: new sites, new use cases, fixing broken scripts Build small apps for users to discover directly inside the product (TypeScript/React/Node, Postgres)

Reliability & QA

Audit and classify production errors at scale, thousands of runs: broken script, external site failure, bad AI decision, or bad user input Build classifiers, often LLM judges themselves, that distinguish these categories automatically, and stress-test their reliability Write end-to-end test scenarios that run 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

What we offer

A role spanning both building and reliability, within a small team, with direct access to the founders and fast decision-making.

Contract: CDI Location: Paris, 124 Rue Réaumur Start date: as soon as possible