Backend Developer – Python £650/day – 6 months – Inside IR35 – 3 days onsite (London) Python – Kafka – AWS – TypeScript – Commodities Trading You'll be working for a leading energy trading business, building out a modern post-trade platform that's genuinely pushing boundaries – live PnL, intraday position reporting, and digitised front office workflows. This is a business that backs its tech, delivers fast, and builds for the long-term. The must-haves: Strong Python experience (hands-on and recent) Experience building backend services in a product team Kafka or other message queue systems Comfortable working in fast-moving agile squads Experience in commodities or trading (preferred but not essential) Nice to haves (in order of priority – at least one or two is needed): AWS services – S3, ECS, AppSync PostgreSQL or NoSQL database experience GraphQL or REST APIs TypeScript React or Svelte (not essential, but helpful for collaboration) To apply – click the link or for a faster response, email Barry.Ansell@HarringtonStarr.com