Founding Engineer - London (up to £170k)

Dex; Greater London; On-site; GBP 120,000 - 180,000; Full time

Job summary

Dex is partnering with a company building an audit operating system for UK and Norwegian markets. You will be the Founding Engineer, owning the agent layer from day one and shaping the system that plans, executes, and checks audit work.

The role involves tackling deep ambiguity, collaborating with state-authorised auditors to embed ISA standards, and building a process from scratch rather than incremental tickets. Office presence is expected most of the week.

Qualifications

• Shipped systems you were personally accountable for, end-to-end.
• Built and measured LLM systems with informed opinions beyond prompting.
• Able to decompose complex, ambiguous processes and iterate with subject-matter experts.
• Willing to be in the office most of the week.

Responsibilities

• Own the agent layer of a new audit operating system, end-to-end.
• Design, build, and iterate the system that plans, executes, and checks audit work.
• Develop mechanisms for the agent layer to autonomously improve evidence gathering and processing.
• Decompose complex, ambiguous audit processes into clear, executable engineering problems.
• Collaborate directly with state-authorised auditors to embed ISA standards and domain expertise into the system.

Skills

End-to-end ownership

LLM systems

Problem decomposition

Office presence

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.
Dex is an AI recruiter agent that helps you run your job search. Tell Dex your stack, seniority, and what you want to build. We will manage your applications and surface other opportunities that are a fit.
The role
This company is building an audit operating system, rethinking statutory audit for UK and Norwegian businesses. They offer a fixed-price, online service, onboarding in minutes, and testing every transaction, not just samples. It's a fundamental shift in a regulated industry, backed by leading investors with significant pre-seed funding.
You will be a Founding Engineer, owning the agent layer of this audit OS from day one. This isn't about picking up tickets; it's about defining the system that plans, executes, and checks audit work. Expect deep ambiguity, problems stated in a single sentence, and no pre-defined roadmap. This role is for someone who wants to build a process from scratch, not just contribute to an existing one.
The work

• Own the agent layer of a new audit operating system, end-to-end.
• Design, build, and iterate on the system that plans, executes, and checks audit work.
• Develop the mechanisms for the agent layer to autonomously improve its evidence gathering and processing.
• Decompose complex, ambiguous audit processes into clear, executable engineering problems.
• Collaborate directly with state-authorised auditors to embed ISA standards and domain expertise into the system.

What You Bring

• You have shipped systems you were personally accountable for, owning them end-to-end.
• You have built and measured LLM systems, forming strong opinions beyond just prompting.
• You can decompose a complex, ambiguous process and iterate on it directly with subject-matter experts.
• You genuinely want to be in the office most of the week.

Why apply through Dex
Founding Engineer roles like this, in complex regulated domains, are rare and often oversubscribed. Dex helps you cut through the noise: sign up once, get matched to this opportunity and others like it, and receive a full brief before you even apply. Skip the cold outreach and understand the real scope before you commit.

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