Full-Stack Engineering Lead for Frontier AI - Path to CTO

TechTree; Greater London; Hybrid; GBP 120,000 - 180,000; Full time

Benefits offered by this job

CTO-level ownership of product

CTO path as company grows

equity

London office; hybrid

full benefits package

Job summary

TechTree in London is building a frontier AI platform integrating a foundation model into safety-critical embedded control software. You will shape the architecture and write a large share of core code in year one, directly impacting how engineers trust and use the product.

As the team scales, you will provide technical leadership, establish standards, hire and mentor engineers, and steer the path toward CTO as the company grows; London hybrid with exceptional candidates considered globally.

Qualifications

• 10+ years building and shipping production software with frontend and backend focus.
• Strong TypeScript/React skills and at least one backend language (Python, Go or TS/Node).
• Experience as founding, lead or principal engineer taking a product to paying customers.
• Hands-on experience shipping LLM-powered features in production with model APIs or self-hosted inference.
• Solid cloud and infrastructure skills (AWS, GCP or Azure; containers; IaC).

Responsibilities

• Own architecture across frontend, backend, data and infrastructure.
• Ship features quickly with product and early users of control engineers.
• Design integration layer for model deployment, inference serving, prompts and context management.
• Build trust workflows including traceability, diffing, tests and audit trails.
• Set up CI/CD, observability, security, access control and cost control for GPU workloads.
• Prepare product for enterprise customers with data isolation and on-prem/private-cloud deployment.
• Lead and mentor the first engineers and define team ways of working.

Skills

TypeScript

React

Python

Go

LLM integration

CI/CD

AWS

GCP

Azure

IaC / Terraform

Tools

Monaco

VS Code extensions

Docker

Job description

TechTree in London is building a frontier AI platform integrating a foundation model into safety-critical embedded control software. You will shape the architecture and write a large share of core code in year one, directly impacting how engineers trust and use the product.

As the team scales, you will provide technical leadership, establish standards, hire and mentor engineers, and steer the path toward CTO as the company grows; London hybrid with exceptional candidates considered globally.