> Markdown version of [/jobs/ext/3231015-fullstack-engineer](https://www.wearedevelopers.com/jobs/ext/3231015-fullstack-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Fullstack Engineer

- **Company:** Comand AI
- **Location:** Paris, France
- **Contract:** Permanent contract
- **Skills:** Python (Programming Language), PostGIS, Software Deployment, TypeScript, Web Performance Optimization, ReactJS, Large Language Models, Backend, Fastapi, Front End Software Development
- **Published:** September 7, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=9117a41e457aa379

## About the Role

We filter hardest on mission drive, low ego, attention to detail, and first-principles problem solving. We want builders who can move across the stack while keeping the user-facing experience sharp., * Strong full-stack production experience, with genuine comfort owning both interfaces and backend systems

 * Solid TypeScript and React, plus Python experience or the ability to become productive quickly with FastAPI
 * A track record of taking features from an ambiguous problem through release and iteration
 * Product judgement and attention to detail, especially in workflows used directly by customers
 * Comfort deciding what to build now, what to make durable, and what to leave out
 * EU or UK citizenship (contractual requirement tied to our defence contracts)

Nice to have:

 * Experience with PostGIS, GIS, mapping, or other geospatial systems
 * Experience with LangGraph, LangChain, or multi-step ML and LLM workflows
 * Experience deploying software on-prem, offline, or as an appliance
 * Experience with front-end performance and data-dense interfaces
 * Prior work in defence, government, or dual-use technology

## Description

You'd join the engineering team to own features end to end, with a strong lean toward the interfaces and workflows clients interact with directly. This is a product engineering role. Unlike our Forward Deployed Engineers, you are not embedded with clients or responsible for running deployments in the field. You turn operational needs and field feedback into a durable core product.

What this looks like in practice:

 * Own end-to-end features on Prevail, our operational planning platform, from scoping and interaction choices through backend implementation and production
 * Spend significant time on the front end, building clear, reliable workflows for users working with complex information under pressure
 * Solve real geospatial problems: move data between backend and frontend through tile servers and use PostGIS for demanding spatial queries
 * Build and harden ML and LLM workflow orchestration, including retries, queueing, and long-running jobs with LangGraph and LangChain
 * Design for on-prem and appliance deployment, where hardware, connectivity, and resource constraints matter as much as cloud scalability
 * Work closely with product, design, and forward-deployed teams to turn user signal into features that work across clients