Fuse Energy

Backend engineer in energy

In short

Senior/Lead Backend Engineer role at an AI-first energy company building core digital infrastructure: AI inference serving for customer support and meter-reading OCR, settlement data recalculation, a real-time billing engine, and trading/hedging systems. Requires 3+ years of software engineering experience, proven ability to build complex systems, and hands-on experience shipping highly available production systems. Hybrid role based in London.

About
Fuse is an AI-first energy company on a mission to make energy abundant and affordable, fast. We combine first-principles thinking with cutting-edge technology to build a radically better energy system. We're hiring a Senior/Lead Backend Engineer to build the core digital infrastructure for a next-generation energy company. You'll work closely with product across the full back-end and engineer backend systems that are second to none.
Responsibilities
Own systems end-to-end, from design and architecture through to production, with a high degree of autonomy as an individual contributor. Responsibilities include, but are not limited to:
•Building the inference layer for our AI workloads, serving millions of prompts per day across customer support and meter-reading OCR, and migrate workloads onto our own GPU infrastructure
•Working on one of the core data challenges in energy: settlement data can arrive months after delivery, requiring systems that support continuous recalculation as new data becomes available
•Developing our real-time billing engine, including per-customer ordering and idempotency, audit trails, and pricing based on half-hourly meter data
•Building and extending our trading and hedging systems, covering forward markets, portfolio optimisation, and reconciliation against exchanges we trade on directly
Requirements
•3+ years of software engineering experience, with requirements varying by role level, from individual contributor to lead
•Proven ability to define and build complex systems
•Hands-on experience shipping highly available production systems
•Clear communication
Benefits
•Competitive salary and eligibility for equity
•Biannual bonus scheme
•Fully expensed tech to match your needs
•Private health insurance
•Breakfast and dinner allowance for office-based employees
•As we hire globally, benefits vary by location

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