Senior Software Engineer (Python/React)

Job description

Senior Software Engineer – AI Startup – Up to 120k

Salary: £70,000 - £140,000 + meaningful equity

Location: London, flexible working arrangements, ideally 2/3 days in office

Tech Stack: Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning)

Our y-combinator backend client are building an elite engineering team within the AI space. The platform is being used across the globe and is delivering high level impact to their customers.

If you're highly ambitious and want to solve real-world problems with the latest in AI and LLMs, this role is for you.

In this role, you’ll:

Build and ship high-impact software

Work on AI/LLM-powered automation tools used in production

Help shape scalable systems and infrastructure

Work collectively across teams to push the product forward

Be working end-to-end on both backend and frontend

You’ll thrive in this role if you:

✅ Love building and shipping quickly

✅ Enjoy working closely with customers and value their needs

✅ Are excited by deep technical challenges and solving them simply, don't over complicate it

✅ Bring ideas and improvements to their engineering processes

✅ Are adaptable and comfortable working across their stack

✅ Understand the working dynamics of a fast paced start-up

If this role sounds like it could be of interest, apply now!

Senior Software Engineer – AI Startup – Up to 120k

Extra information

Status

Open

Education Level

Secondary School

Location

London Area

Type of Contract

Full-time jobs

Published at

12-01-2026

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English