Full-stack Engineer (up to £140k)

Dex; Greater London; On-site; GBP 90,000 - 150,000; Full time

Job summary

Dex partners with a scaling company to hire a senior full-stack engineer. You will own the entire stack from React/Next.js frontend to Python services, collaborating directly with the founders on high-impact features.

You will mentor junior engineers as the team grows and contribute to cloud infrastructure planning and CI/CD strategy. The role requires 5+ years delivering production-quality software with React/Next.js, strong Python backend skills (Django or FastAPI), and practical experience

Qualifications

• 5+ years shipping production-grade software.
• Proven track record delivering end-to-end features with React/Next.js.
• Strong Python backend development (Django or FastAPI).
• Hands-on cloud infra experience (AWS/GCP/Azure) and CI/CD pipelines.
• Experience with background workers, Redis, and Celery/RQ.

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 directly with founders, product, and design on high-impact features.
• Mentor junior engineers and help grow the team.

Skills

End-to-end shipping

Mentoring

Team collaboration

Leadership

Tools

React

Next.js

Django

FastAPI

Python

Docker

Kubernetes

CI/CD

Redis

Celery

AWS

GCP

Azure

Job description

This role is with one of Dex's trusted partner companies. We work closely with their teams to truly understand their culture, goals, and what they're looking for, so we can match you with the right opportunity and give you context about the role before you commit to a process.

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.