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20 of 472 matching

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Agent infrastructureMid-levelTop pickNew

Platform Engineer - Founding - AI

AtarusLondon, England, United Kingdom (On-site)

Posted 1d ago/Full-time/£100k–£140k/yr/Expires Nov 10, 2026

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Why it matters

The role owns core production agent architecture, including retrieval, routing and tool execution, alongside evaluation and observability. It offers founding-level responsibility for infrastructure connecting trusted industry data with AI agents.

About the job

🚀 Founding AI Platform Engineer

📍 London | Onsite

💰 Competitive + Founding Equity

We’re working with an early-stage AI company building infrastructure that connects trusted industry data with AI agents, initially focused on renewable energy.

They already have paying customers and meaningful revenue and are now hiring a Founding AI Platform Engineer to help build the technical foundation alongside the founders.

You’ll own 👇

Production AI agent architectures — RAG, retrieval, routing & tool use
Backend systems and APIs powering the platform
Evaluation, observability and reliability of AI systems
Developer tooling, CI/CD and AI-native engineering workflows

Looking for 🧠

Strong Python/backend engineering experience with hands-on production experience building LLM agents, RAG or AI-powered systems. You should be comfortable working across backend, AI and infrastructure rather than sitting in one narrow lane.

Stack ⚙️

Python • FastAPI • PostgreSQL • Temporal • LLM Agents • RAG

Why join?

Genuine founding-level ownership, direct access to the founders, active customers, meaningful equity and backing from Visionaries Club + Google DeepMind leaders.

If you want to build an AI platform from the foundations up rather than join after all the interesting decisions have been made, drop me a message.

Stack

python
fastapi
postgresql
temporal
rag

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