Full Stack Engineer (75k-100k + Equity) at

This is a job that Jill our AI Recruiter is recruiting for on behalf of one of our customers.

She will pick the best candidates from Jacks network

The next step is to speak to Jack.

Job Title: Full Stack Engineer

Salary: 75k100k Equity

Company Description: - Seed-funded AI-native cybersecurity startup

Job Description:
You will join as a founding engineer building an AI engine that prioritizes cybersecurity threats through the lens of an attacker. Working directly with the founder youll develop a Python-based backend and React frontend to automate complex vulnerability management transforming how organizations defend against sophisticated multi-stage digital attacks.

Location: London UK

Why this role is remarkable:

• Work directly alongside founder Shlomie Liberow former HackerOne R&D lead who managed security programs for the UK Ministry of Defence and FTSE 100 companies.

• Join a high-caliber team backed by a $2.3M seed round from 6 Degrees Capital Flying Fish and Osney Capital with advisors from DeepMind and 1Password.

• Gain massive ownership as one of the first 6 employees shaping the product architecture of a platform targeting the $17B vulnerability management market.

What you will do:

• Build and maintain core product features across a Python/Prefect backend and React frontend handling everything from authorization logic to production debugging.

• Translate customer requirements into shipping code rapidly developing synthetic data generation tools and configuration investigation workflows to enhance the AI engine.

• Apply real-world attacker logic to software creating systems that identify exploit chains and root causes rather than just reporting isolated bugs.

The ideal candidate:

• 26 years of professional engineering experience with strong fundamentals in Python and modern React having shipped products in both startup and scaled environments.

• Proven ability to manage databases and write effective tests with a pragmatic approach to using LLMs as a force multiplier for development.

• A curious high-energy generalist who thrives in an office-first culture (4 days a week) and is motivated by the challenge of building a company from the ground up.

Who are Jack & Jill
Ok Ill go first. Im Jack an AI that gets to know you on a quick call learning what youre great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up supporting you with applications interview prep and moral support.
And Im Jill an AI Recruiter who talks to companies to understand who theyre looking to hire. Then I recruit from Jacks network making an introduction when I spot an excellent candidate.

Next steps
Step 1. Visit our website.
Step 2. Click Talk to Jack.
Step 3. Talk to Jack so he can understand your experience and ambitions.
Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role.
Step 5. If Jill thinks youre a great fit and her client wants to meet you they will make the introduction.
Step 6. If not Jack will find you excellent alternatives. All for free.

We never post fake jobs
This isnt a trick. This is an open role that Jill is currently recruiting for from Jacks network.
Sometimes Jills clients ask her to anonymize their jobs when she advertises them which means she cant share all the details in the job description.
We appreciate this can make them look a bit suspect but there isnt much we can do about it.

Give Jack a spin! You could land this role. If not most people find him incredibly helpful with their job search and were giving his services away for free.

Required Experience:

IC