Founding Engineer (£100k-£150k + Equity) at Stealth GovTech Startup

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Job Title

Founding Engineer

Salary

£100k-£150k + Equity

Company Description

Stealth-mode GovTech startup modernizing planning and infrastructure for the UK and US markets

Job Description

You will lead the development of AI-driven software designed to replace decades-old legacy systems in local government. By building autonomous agents and durable workflows that handle complex planning research, you’ll help clear massive housing backlogs and ensure society gets the infrastructure it needs. This is a high-impact, product-focused founding role.

Location

London, UK

Why this role is remarkable

• Massive global impact: You will be modernizing a trillion-dollar market that directly affects housing, climate, and infrastructure projects across the planet.
• High-caliber team: Work alongside a 2x construction tech founder, former leads from Marshmallow and Cytora, and engineers with unicorn/exit experience.
• Cutting-edge stack: Deploy sophisticated AI agents and LLM-grounded workflows using a modern stack of React, TypeScript, Supabase, and Braintrust.

• Build and ship new product features end-to-end, moving from concept to deployment with extreme urgency and full autonomy.
• Develop AI agents and durable workflows that gather evidence across thousands of sources to automate complex planning task validation.
• Work directly with local government users to iterate on product direction and ensure technical decisions solve real-world pain points.

• A product-minded full stack engineer with 3+ years of experience and a track record of shipping 0-to-1 products in startup environments.
• Expert-level proficiency with LLMs and AI agents, specifically in deploying them to production within complex or regulated enterprise settings.
• Possesses a founder mindset and takes pride in writing clean, reliable code that improves human workflows rather than just replacing them.

Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.

And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.

Next steps

Step 1. Visit the job listing.

Step 2. Click 'Talk to Jack', or go straight there: https://www.jackandjill.ai/jobs/founding-engineer-100k-150k-equity-at-stealth-govtech-startup-5d92e380-99c5-4cb8-a7a0-fa091ab83da1?utm_source=linkedin&utm_medium=job_post&utm_campaign=featured_role_5d92e380-99c5-4cb8-a7a0-fa091ab83da1

Step 3. Talk to Jack so he can understand your experience and ambitions.

Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role.

Step 5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction.

Step 6. If not, Jack will find you excellent alternatives. All for free.

We never post fake jobs

This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.

Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.

We appreciate this can make them look a bit suspect, but there isn't much we can do about it.

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