Senior Fullstack Engineer - AI-Driven Data Platform

Dex; Greater London; On-site; GBP 70,000 - 110,000; Full time

Job summary

Dex collaborates with a trusted partner company to build an AI-powered data platform that predicts customer churn and drives revenue retention. You’ll join a lean engineering team, owning core components from scalability to embedding AI into workflows, tackling deep technical challenges beyond simple feature shipping.

Ideal candidates have 5+ years of production experience, strong Python (Django, Flask, FastAPI) and React skills, with backend expertise in Postgres, Iceberg, or Redshift, and

Qualifications

• 5+ years of production experience owning significant platform components end-to-end.
• Proficient with Python stack (Django, Flask, FastAPI) and React with backend work in Postgres, Iceberg or Redshift.
• Experience deploying and operating services on AWS with Kubernetes and owning infrastructure.
• Uses AI tooling in engineering workflows and aims to embed AI deeper.
• Able to articulate past architectural decisions in ambiguous, technically challenging problems.

Responsibilities

• Build and scale core data platform components from dozens to hundreds of enterprise customers.
• Drive robustness and reliability across the stack (Postgres, Redshift, Apache Iceberg).
• Own infrastructure on AWS and Kubernetes, not just application code.
• Integrate AI directly into the product and engineering workflows beyond experimentation.
• Reduce manual support overhead through automation and platform improvements.

Skills

Architectural decisions

Problem solving

Tools

Postgres

Apache Iceberg

Redshift

Django

Flask

FastAPI

React

AWS

Kubernetes

Job description

Dex collaborates with a trusted partner company to build an AI-powered data platform that predicts customer churn and drives revenue retention. You’ll join a lean engineering team, owning core components from scalability to embedding AI into workflows, tackling deep technical challenges beyond simple feature shipping.

Ideal candidates have 5+ years of production experience, strong Python (Django, Flask, FastAPI) and React skills, with backend expertise in Postgres, Iceberg, or Redshift, and