Senior Full-Stack Engineer: Build End-to-End AI Platform

Dex; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Dex is building an AI data-integration and analysis platform focused on highly sensitive financial environments. You will own design and shipping across the entire stack, from React/Next.js to Python services and cloud deployments, with direct collaboration with the founders.

This is a true full-stack role where you will mentor junior engineers, shape best practices, and contribute to high-impact features that drive customer value across enterprise deployments.

Qualifications

• 5+ years of professional software engineering experience, shipping products end-to-end.
• Proven track record building and running production applications with React and Next.js.
• Strong Python backend skills (Django or FastAPI preferred) and solid database fundamentals.

Responsibilities

• Design and ship end-to-end features across React, Next.js, and Python services.
• Build and optimize background workers and Redis-backed task queues.
• Contribute to cloud infrastructure planning (AWS, GCP, Azure) and CI/CD strategy.
• Collaborate directly with founders, product, and design on high-impact features.
• Mentor junior engineers, shaping best practices and contributing to team growth.

Skills

React

Next.js

Python

Django

FastAPI

Cloud

CI/CD

Redis

PostgreSQL

Tools

Docker

Kubernetes

Celery

Redis

Job description

Dex is building an AI data-integration and analysis platform focused on highly sensitive financial environments. You will own design and shipping across the entire stack, from React/Next.js to Python services and cloud deployments, with direct collaboration with the founders.

This is a true full-stack role where you will mentor junior engineers, shape best practices, and contribute to high-impact features that drive customer value across enterprise deployments.