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Dex
Dex

Founding Engineer (up to £160k)

London On-site 5-10 yrs exp Technology, Information and Internet 34 employees
AIData ProcessingUIAgent HarnessEvaluation

Requirements

Candidates should have a proven track record in building and scaling production systems, particularly in AI-driven solutions. A pragmatic engineering approach and comfort with high autonomy in fast-moving environments are essential.

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.

If you're interested sign up to Dex to apply.

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 AI automation for SOX compliance testing. They're replacing manual audit work with a fully agentic approach, from evidence management to auditable decision logs. Backed by leading investors at pre-seed, the founding team brings deep experience in AI and scaling startups.

As a Founding Engineer, you'll be one of the first hires, owning the core product's backbone. This means genuine end-to-end responsibility: data processing, UI, agent harness, evaluation, and deployment. You'll shape the product roadmap directly with the founders, balancing customer needs with long-term health. This isn't a role where you hand off work; it's where you build, launch, and scale, prioritising proven methods over novel tech for its own sake.

The work

  • Scope, build, and launch features that automate SOX audit workflows end-to-end.
  • Design and implement the core agentic system, from evidence ingestion to auditable decision logs.
  • Own the full stack: data processing, UI, agent harness, evaluation, and deployment.
  • Influence product strategy and roadmap alongside the founders, integrating customer feedback.
  • Scale the core audit product to handle significant customer loads and complex data.

What You Bring

  • Proven track record building, launching, and scaling production systems.
  • Experience developing AI-driven solutions, pushing the boundaries of current models.
  • Pragmatic engineering approach: you value proven methods over novelty, balancing research curiosity.
  • Comfort operating with high autonomy, owning problems end-to-end in ambiguous, fast-moving environments.
  • Willingness to be client-facing when required.
  • Commitment to relocate from London to San Francisco by Fall 2026 and work in-person. Visa support provided.

Why apply through Dex

Founding Engineer roles at pre-seed AI companies are rare and highly competitive. Apply through Dex to cut through the noise. We'll ensure your profile is seen by the hiring team and brief you thoroughly, helping you stand out for this unique opportunity.

If you're interested, sign up to Dex to apply - https://jobs.meetdex.ai/jobs/a7eafa24-1e78-4089-aa5a-68bb78247a2c

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Skills

AIData ProcessingUIAgent HarnessEvaluationDeploymentProduct StrategyCustomer FeedbackAudit WorkflowsAutomationProduction SystemsEngineeringScalingClient-FacingProblem SolvingAutonomy

About Dex

Dex is for exceptional people who build exceptional things. We connect exceptional Software Engineers with venture-backed Start-ups and Scale-ups in London. Few roles. Fewer candidates. Better matches. We are curated. We only offer a rigorously selected set of roles from the best organisations. Every opportunity is vetted. We are transparent. We insist on full transparency on salary, terms and package from the get-go. Giving you confidence that things really are the way they seem. We are long term. Dex stays with you throughout your career across promotion cycles, frustration peaks and surfacing big opportunities. Treat your job search like production (not a sandbox). Brief Dex to find the roles actually worth your time.

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