Founding AI Engineer for Cybersecurity Systems (Equity)

Referment; Greater London; On-site; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Competitive salary

Meaningful equity

Direct access to founders

Job summary

Referment is partnering with a venture-backed AI startup to hire an exceptional engineer who will own features end-to-end, from problem to production. You’ll work directly with the founders on building AI-powered cybersecurity products and ship React interfaces while shaping backend systems and internal tools.

You’ll thrive on hard engineering challenges, from DSLs to compiler-like components, and you’ll be deeply involved in design decisions, deployment, and product culture from day one.

Qualifications

• Strong Python backend fundamentals with high-level application of tools like FastAPI, Django, or Flask to build DSLs or agentic infrastructure.
• Verifiable track record of technical contributions and honest project claims, such as an active GitHub or OSS presence where you are a primary maintainer or frequent contributor.

Responsibilities

• Own features from customer problem through to production.
• Design complex backend architecture and systems.
• Ship React interfaces.
• Build internal developer tools, agentic consoles, and custom runner systems.
• Improve databases and handle systems programming.
• Debug production and deploy continuously.
• Help shape both the product and the engineering culture.

Skills

Python

Backend architecture

FastAPI/Django/Flask

React

OSS contributions

Tools

FastAPI

Django

Flask

Job description

Referment is partnering with a venture-backed AI startup to hire an exceptional engineer who will own features end-to-end, from problem to production. You’ll work directly with the founders on building AI-powered cybersecurity products and ship React interfaces while shaping backend systems and internal tools.

You’ll thrive on hard engineering challenges, from DSLs to compiler-like components, and you’ll be deeply involved in design decisions, deployment, and product culture from day one.