Founding Engineer (up to £200k)

Dex; Greater London; On-site; GBP 120,000 - 190,000; Full time

Job summary

Dex and its partner companies seek a Founding Engineer in London to own the central platform that runs AI-native enterprises. You will design, deploy, and scale autonomous agents and automated workflows that power tens of millions in live revenue, building a robust, scalable engine from the ground up.

You will work closely with business operators to translate operational playbooks into resilient software infrastructure, ensuring performance, reliability, and measurable commercial outcomes in a

Qualifications

• Track record of designing, building, and running complex production software systems end to end.
• Hands-on experience architecting AI-native systems, autonomous agents, or complex LLM-driven operational workflows.
• An owner mindset focused on commercial outcomes and system architecture rather than a narrow slice of a codebase.

Responsibilities

• Architect and scale the central software engine used to launch and run full-scale AI-native enterprises from scratch.
• Design, deploy, and maintain autonomous agents and LLM-driven workflows that replace entire operational layers of legacy businesses.
• Own system performance, reliability, and business outcomes end to end across systems processing tens of millions in real revenue.
• Collaborate directly with business operators to translate manual operational playbooks into autonomous, resilient software infrastructure.

Skills

Systems architecture

AI-native systems

Autonomous agents

LLM-driven workflows

Ownership mindset

Job description

This role is with one of Dex's trusted partner companies. We work closely with their teams to truly understand their culture, goals, and what they're looking for, so we can match you with the right opportunity and give you context about the role before you commit to a process.

The role

Instead of selling SaaS to legacy industries or orchestrating traditional private equity roll-ups, this company rebuilds entire legacy enterprises from scratch as AI-native businesses run by a single operator. Backed by leading European venture funds, they scaled past eight figures in annualized revenue in under a year while sustaining over one million dollars in revenue per employee. As a Founding Engineer, you are building the central platform that runs these companies. This is not a ticket‑taking feature‑factory role, nor is it an academic prompt‑engineering sandbox. You will own the core systems architecture end to end, deploying autonomous agents and automated workflows that directly power tens of millions in live commercial revenue.

The work

• Architect and scale the central software engine used to launch and run full‑scale AI‑native enterprises from scratch.
• Design, deploy, and maintain autonomous agents and LLM‑driven workflows that replace entire operational layers of legacy businesses.
• Own system performance, reliability, and business outcomes end to end across systems processing tens of millions in real revenue.
• Collaborate directly with business operators to translate manual operational playbooks into autonomous, resilient software infrastructure.

What You Bring

• Track record of designing, building, and running complex production software systems end to end.
• Hands‑on experience architecting AI‑native systems, autonomous agents, or complex LLM‑driven operational workflows.
• An owner mindset focused on commercial outcomes and system architecture rather than a narrow slice of a codebase.
• Commitment to a high‑intensity, fully in‑person culture five days a week in London.

As part of the recruitment process at Dex, we process your personal data in accordance with our Privacy Notice for Job Applicants. This notice explains how and why your data is collected and used, and how you can contact us if you have any concerns.