Software Engineer at fast-growing AI startup

Jack & Jill/External ATS; Greater London; On-site; GBP 100,000 - 125,000; Full time

Job summary

A fast-growing AI startup in London is seeking a Software Engineer to join their innovative team. This role offers a unique greenfield opportunity to build backend systems from scratch, integrate with state-of-the-art AI technologies, and directly influence product development. The ideal candidate will have strong software development skills in Java, TypeScript, or Python, and thrive in a fast-paced environment. You'll own your projects and potentially benefit from life-changing equity in this rapidly scaling venture.

Qualifications

• Strong experience building production-quality software.
• Demonstrates curiosity and adaptability in technology.
• Possesses hunger, drive, and ownership mentality.

Responsibilities

• Build production-quality software, primarily on backend.
• Integrate with LLMs and collaborate with founding team.
• Iterate based on customer feedback.

Skills

Java

TypeScript

Python

Adaptability

Problem-solving

Job description

This is a job that we are recruiting for on behalf of one of our customers.

To apply, speak to Jack. He's an AI agent that sends you unmissable jobs and then helps you ace the interview. He'll make sure you are considered for this role, and help you find others if you ask.

Software Engineer

Company Description

fast-growing AI startup

Job Description

Join an early-stage AI startup redefining innovation discovery and protection. This greenfield opportunity involves building extraordinary systems from scratch, working primarily on the backend, integrating with LLMs, and collaborating directly with founders. You'll design, ship, and iterate products with immediate, visible customer impact, shaping a company scaling at breathtaking speed.

Location

London, UK

Why this role is remarkable

• True greenfield opportunity with no legacy code, offering freedom to solve challenging technical problems.
• Backed by tier-one investors and industry leaders, achieving seven figures in recurring revenue within its first year.
• High ownership, direct impact, and the potential for life‑changing equity in a rapidly scaling environment.

What you will do

• Build production‑quality software, primarily focusing on backend development.
• Integrate with LLMs and collaborate directly with the founding team to design and ship products.
• Speak with customers, think critically from their perspective, and iterate based on feedback.

The ideal candidate

• Strong experience building production‑quality software (Java, TypeScript, or Python).
• Demonstrates curiosity and adaptability, learning new technologies quickly and effectively.
• Possesses hunger, drive, and an ownership mentality, thriving in fast‑paced, ambiguous environments.

How to Apply

To apply for this job speak to Jack, our AI recruiter.

Step 1. Visit our website.

Step 2. Click 'Speak with Jack'.

Step 3. Login with your LinkedIn profile.

Step 4. Talk to Jack for 20 minutes so he can understand your experience and ambitions.

Step 5. If the hiring manager would like to meet you, Jack will make the introduction.