Energy Jobline is the largest and fastest growing global Energy Job Board and Energy Hub. We have an audience reach of over 7 million energy professionals, 400,000+ monthly advertised global energy and engineering jobs, and work with the leading energy companies worldwide.

We focus on the Oil & Gas, Renewables, Engineering, Power, and Nuclear markets as well as emerging technologies in EV, Battery, and Fusion. We are committed to ensuring that we offer the most exciting career opportunities from around the world for our jobseekers.

Job Description

Senior Backend Python Engineer – London

London · In-person

Very competitive base + equity

A well-funded Series A startup in London is building AI agents that help internal teams focus on meaningful work by automating repetitive, admin-heavy finance tasks. These are real products with real users, designed to make work more efficient, less tedious, and more impactful!

This is a high-impact role with direct influence on the core backend systems powering the product. The founders have previous multi-million-dollar exits and are building one of the fastest-moving startups in London

What You’ll Be Doing

Build core backend services, APIs, and distributed systems in Python Design architecture, data flows, and infrastructure foundations Own production systems and iterate quickly based on real user feedback Work closely with the leadership team on technical direction and product strategy Shape backend engineering culture, tooling, and processes as the team scales

⚙️ Tech Stack

Python (FastAPI) · PostgreSQL · Event-driven services · Modern AI frameworks & agent-driven systems · Cursor · AI/ML

Who This Is For

Senior backend engineers with 5+ years experience in well-funded, high-growth startups People comfortable making high-leverage technical decisions in ambiguous environments Engineers passionate about AI that improves workflows and frees teams from repetitive work

❌ Not For

Fully remote candidates Early-career engineers or first startup role Big-company pace, heavy process, or narrow scope

✨ Why It’s Interesting

High-impact senior role with equity upside Work alongside proven founders with serious ambition and execution speed Strong investor backing and real runway Opportunity to scale backend systems that transform how internal teams work and make finance less tedious

If building AI systems that help people spend less time on repetitive tasks and more time on meaningful work sounds exciting - pop us your CV and we'll be in touch

If you are interested in applying for this job please press the Apply Button and follow the application process. Energy Jobline wishes you the very best of luck in your next career move.