Senior Software Engineer Data & Intelligence Platform

Salary: £36,000 - 76,000 per year

Requirements

• We are looking for someone who takes ownership and fixes problems without waiting to be asked.
• We need someone who is comfortable with ambiguity and can navigate unclear problems without handholding.
• We want someone who writes readable, tested code that other engineers want to work with.
• We need someone with experience across backend services and data systems in production.
• We need someone who can pick up new technology without being overly attached to what they already know.
• We are looking for strong TypeScript and Python skills, or a willingness to learn quickly.
• We need experience building or operating data-intensive backend services.
• We would like some experience with LLM APIs or retrieval systems.
• Kubernetes and cloud-native deployment experience is useful.
• Supply chain or forecasting domain knowledge is useful but not required.
• Nice to have: experience contributing to shared frontend/backend or developer platform infrastructure.
• Nice to have: infrastructure as code experience, including Helm, Kubernetes manifests, and CI/CD pipeline design.
• Nice to have: supply chain, replenishment, or demand forecasting domain familiarity.

Responsibilities

• We are responsible for building a high-performance data platform that brings together analytical, caching, vector, and object stores behind a clean typed API.
• We work on supply chain intelligence layers that make forecasting outputs accessible, actionable, and explainable through well-designed APIs.
• We ensure the right data reaches the right place at the right time and remains fresh.
• We build and improve a conversational and tool-calling LLM integration layer for natural language access to platform data and forecasts.
• We work on retrieval quality, tool design, prompt architecture, and streaming response pipelines.
• We own problems end to end across data engineering, applied ML, and developer infrastructure.
• We may design data APIs, improve retrieval in RAG pipelines, and work with infrastructure to get services into production.

Technologies

• API
• Backend
• CI/CD
• Cloud
• Frontend
• Helm
• Support
• Kubernetes
• LLM
• Mobile
• Network
• Python
• RAG
• REST
• TypeScript

More

We are Tesco, a supermarket, technology company, and award-winning mobile network, with colleagues working to make every day a little better for our customers, colleagues, and communities. This is a hybrid role based in Welwyn Garden City, with 60% of the week spent collaborating at our office locations or local sites and the rest working remotely. We offer a competitive colleague benefits package, including an annual bonus scheme of up to 20% of base salary, holiday starting at 25 days plus a personal day and bank holidays, private medical insurance, maternity, adoption and paternity leave, a free 24/7 virtual GP service, and employee wellbeing support. We are proud to be an accredited Disability Confident Leader and provide a fully inclusive and accessible recruitment process. We welcome flexible working conversations and encourage applications even if you do not tick every box.

last updated 35 week of 2026