Hybrid Senior Data & AI Platform Engineer

Tesco; Welwyn Garden City; Hybrid; GBP 36,000 - 76,000; Full time

Benefits offered by this job

Annual bonus up to 20%

Private medical insurance

25 days holiday + personal day + bank

24/7 virtual GP

Wellbeing support

Job summary

Tesco is seeking an engineer to help assemble a high-performance data platform in Welwyn Garden City, blending analytical, caching, vector, and object stores behind a typed API. You’ll contribute to supply chain intelligence and forecasting APIs, ensuring timely, reliable data delivery.

The role blends data engineering, ML, and developer infrastructure with a strong focus on scalable backend systems. Required are solid TypeScript and Python skills, experience with production data systems, and a

Qualifications

• Ownership and fix problems without being asked.
• Comfort with ambiguity and navigating unclear problems without handholding.
• Readable, tested code that others want to work with.
• Experience across backend services and data systems in production.
• Ability to pick up new technology quickly (TypeScript and Python).

Responsibilities

• Build a high-performance data platform combining analytical, caching, vector, and object stores behind a typed API.
• We work on supply chain intelligence layers to make forecasts accessible, actionable, and explainable via APIs.
• Ensure data reaches the right place at the right time and remains fresh.
• Develop a conversational and tool-calling LLM integration layer for NLP access to data and forecasts.
• Improve retrieval quality, tool design, prompts, and streaming response pipelines.
• Own end-to-end problems across data engineering, applied ML, and developer infrastructure.
• Design data APIs, improve retrieval in RAG pipelines, and collaborate to productionize services.

Skills

TypeScript

Python

Data-intensive backend

Kubernetes

CI/CD

LLM APIs

Retrieval systems

Cloud-native deployment

Ownership/problem-solving

Tools

Helm

REST

API design

RAG

Kubernetes manifests

CI/CD pipelines

Job description

Tesco is seeking an engineer to help assemble a high-performance data platform in Welwyn Garden City, blending analytical, caching, vector, and object stores behind a typed API. You’ll contribute to supply chain intelligence and forecasting APIs, ensuring timely, reliable data delivery.

The role blends data engineering, ML, and developer infrastructure with a strong focus on scalable backend systems. Required are solid TypeScript and Python skills, experience with production data systems, and a