Full Stack Firebase + React CXntury

Job description

CXntury is looking for a Full-Stack Developer who enjoys taking ownership and building features end-to-end — from database to UI.

You’ll work with a production product, improve an existing codebase, and use AI coding tools as a real part of your everyday engineering workflow.

What you’ll work with

- Node.js + React

- JavaScript / TypeScript

- Firebase: Cloud Functions (2nd gen), Firestore, Auth, Hosting, Emulator Suite

- Google Cloud: Cloud Run, Cloud Tasks, Cloud Logging

- Stripe: Connect, PaymentIntents, refunds, webhooks, holds & captures, idempotency

- GitHub Actions and CI/CD

What we’re looking for

- 1+ year of commercial experience shipping production software as a Full-Stack Engineer

- Strong Node.js and React skills

- Experience working with and maintaining a large existing codebase

- Ability to make focused improvements instead of rewriting everything from scratch

- Production experience with Firebase and Stripe

- Comfortable owning a feature independently — backend, database, frontend and deployment

- Daily hands-on experience with AI coding tools like Claude Code, Cursor, Copilot or similar

- You know how to use agentic AI workflows and, more importantly, how to review AI-generated code critically

- English B2+ for daily written communication

What we offer

- 🌍 International team and product

- 💻 Remote-friendly environment

- 🤖 AI-first engineering culture

- 🚀 Real ownership and autonomy

- 📈 Opportunity to grow with the product

- 🤝 Small team with direct communication and minimal bureaucracy

Ready to build, improve and ship? Let’s talk!