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Founding AI Engineer

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Build core AI systems from scratch, design knowledge graphs, and make foundational technical decisions. Work with Python, LLMs, and modern web technologies. Join a stealth-stage AI startup as its first technical team member.

Key Highlights
Build semantic intelligence layer of product
Design knowledge graphs, retrieval systems, and data pipelines
Make foundational technical decisions that shape company's trajectory
Technical Skills Required
Python LLMs Vector databases Knowledge graphs React TypeScript Supabase AWS Agent frameworks (e.g., LangChain, LangGraph)
Benefits & Perks
£180K plus equity
Founding team status
Significant equity
Competitive compensation
Brand-new MacBook
Central London office
Team dinners

Job Description

Founding AI Engineer – London - £180K plus equity

Halian is currently working with a stealth-stage AI startup is hiring its first technical team member. If you want to build core AI systems from the ground up and move faster than a typical tech organisation ever allows, this might be for you.

What you’ll do

·Build the semantic intelligence layer of our product

·Design knowledge graphs, retrieval systems, and data pipelines

·Work across Python, LLMs, vector databases, and modern web technologies

·Make foundational technical decisions that shape the company’s trajectory

Tech you’ll work with

·Python, LLMs, vector databases, knowledge graphs

·React/TypeScript, Supabase, AWS

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