Full-stack Engineer (up to £140k)

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 enterprise-grade security and scalable architecture. This is a true full-stack role responsible for end-to-end product delivery from frontend to backend and cloud deployment.

You will own design and shipping across the stack, collaborate with founders, product, and design on high-impact features, and mentor junior engineers as the team expands.

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 with Django or FastAPI.
• Experience with cloud infrastructure, Docker, Kubernetes, and CI/CD pipelines.
• Fluency with background workers and Redis for caching or job queues.

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 and CI/CD strategy.
• Collaborate with founders, product, and design on high-impact features.
• Mentor junior engineers and help grow the team.

Skills

React

Next.js

Python

Django

FastAPI

Docker

Kubernetes

Redis

CI/CD

Tools

Celery

RQ

AWS

GCP

Azure

Job description

The role

This company builds an AI data-integration and analysis platform. They automate document processing and natural-language data retrieval for enterprise customers. Think highly sensitive financial environments, where SOC 2, ISO 27001, and GDPR are non-negotiable. They've secured significant funding from leading investors and are scaling rapidly. You'll report directly to the founders. This is a true full-stack seat, not a front-end role with backend tickets bolted on. You'll own design and shipping across the entire stack, from React/Next.js to Python services and cloud deployments. Expect direct collaboration on high-impact features and the chance to mentor as the team grows.

The work

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

What You Bring

• 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.
• Experience with cloud infrastructure, Docker, Kubernetes, and CI/CD pipelines.
• Fluency with background workers, task queues (e.g., Celery, RQ), and Redis for caching or job queues.