Founding Fullstack engineer (Python + React.js)

TL;DR

We're building the next Netsuite/Odoo for the AI-age (an enterprise operations platform)

Founded by the team that scaled GitGuardian and talent.io

Backed by top-tier VCs (3M€ pre-seed)

Thrive in fast-paced AI-startup

Once-in-a-lifetime opportunity to join a tight-knit, world-class early team

Competitive salary plus equity ownership

Location: Fully remote, France.

What you'll build

Responsible for building and maintaining product features across their full lifecycle: from initial technical design to implementation, deployment and monitoring. You’ll work across the frontend and backend, and collaborate closely with founders to ship customer-facing features with real impact.

Product features used daily by professionals. Built in React, TypeScript and Python

A clean frontend UX: responsive, accessible, fast, and reactive to real-time data

Backend APIs that are clean, consistent and performant using Django (django-ninja) and Pydantic

A database model optimized for complex workflows, high-frequency queries and AI interfacing

Observability of the features you own.

Foundations for AI-native interfaces (RAG, agents, orchestration logic) woven into the product layer, not bolted on

Who we want

We’re assembling an exceptional founding team and are looking for a Founding Fullstack Engineer with startup experience. If you want to build and ship end-to-end, own massive impact, and shape a world-class company from day one, let’s talk.

You need

Expertise in python web backend development (Django optional)

Strong frontend engineering skills with React and TypeScript

Deep knowledge of API design, data modeling and query optimization

Understanding of monitoring, observability and debugging in production

Familiarity with distributed systems and asynchronous data flows

Experience building responsive, accessible UIs

Git proficiency and comfort in modern CI/CD pipelines

Don’t meet every single requirement? If you’re excited about our mission and confident you can deliver outcomes, we encourage you to apply.

Bonus points

We don’t expect you to be a unicorn but deeper experience in some of these areas would be highly appreciated:

Experience with React Query, Tanstack Router.

Hands-on work with Grafana and Prometheus

Exposure to AI features (RAG, agent orchestration, vector search)

How we work

Total ownership: End-to-end impact.

Zero bureaucracy: Small, agile team driving rapid execution.

Craft with velocity: We move fast by shipping small and never compromising on excellence.

Radical prioritization: One goal at a time, done right.

No egos: Feedback with recommendations can come from anyone, across any team.

What you’ll get

Competitive salary + meaningful equity

Exceptional peers and a cutting-edge AI stack

Ideal equipment and setup (top-tier gear, remote-friendly)

Regular company offsite (2–4 times per year) in great locations

Location: Fully remote, France.

Process

We value efficiency and clarity. The entire process takes no more than 2 weeks:

40-minute intro call with Eric (CEO).

90-minute technical interview with Eugène (CTO).

30-min cultural-fit interview with Florian (CRO)

2 days paid assessment

Offer: If it’s a match, we move fast.

Interested?

Send an email to Eric and Eugène at founders@pistonhq.app and let us know

why

you want to join.