Full-stack Engineer (up to £140k)

Dex; Greater London; On-site; GBP 90,000 - 125,000; Full time

Job summary

Dex is building an AI data-integration and analysis platform for enterprise clients, with strict SOC 2, ISO 27001 and GDPR requirements. The role offers a true full-stack ownership across from React/Next.js to Python services and cloud deployments.

You will work directly with the founders, shaping high-impact features, collaborating with product and design, and mentoring the growing team as the company scales. Expect a hands-on, architecture-wide role in a fast-paced environment.

Qualifications

• 5+ years of professional software engineering experience.
• Proven track record delivering end-to-end features with React and Next.js.
• Strong backend Python skills with Django or FastAPI.
• Experience with cloud infrastructure (AWS/GCP/Azure).
• Familiarity with Docker, Kubernetes and CI/CD pipelines.
• Background workers and Redis-based queues (Celery/RQ) experience.

Responsibilities

• Design and ship end-to-end features across React/Next.js and Python services.
• Build and optimize background workers and Redis-backed queues.
• Contribute to cloud infrastructure planning and CI/CD strategy.
• Collaborate with founders, product and design on high-impact features.
• Mentor junior engineers and contribute to team growth.

Skills

React

Next.js

Python

Django

FastAPI

Cloud infrastructure

Docker

Kubernetes

CI/CD

Celery

RQ

Redis

Databases

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.