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Jack & Jill

Founding Engineer | £140k - £200k + Equity

Jack & Jill
United Kingdom · Full-time · Mid-Senior

What are we doing?


Imagine a world where every person is in their optimal job – doing their best work, fulfilled and impactful – and every company has the optimal people working for them, driving innovation and success. We’re a long, long way from that today.


It’s ridiculous that processes so fundamental to our lives and companies are this terrible.

It isn't a problem that can be solved by adding AI to existing workflows. We need to think from first principles about what is possible with today and tomorrow’s technologies.


Meet Jack & Jill


Jack is an AI that deeply gets to know you, what you’re great at, and what you want out of your career. He then works to make that a reality – finding the best fit public job listings as they come up, supporting with applications, interview prep, and moral support.


He also works together with his partner Jill to find off-market opportunities and introduce you directly to companies, just like a recruiter would.


Jill is an AI that spends time with hiring managers and talent teams to really understand their company, their open roles, and who will truly thrive there. She works with Jack to find great fit people, like a headhunter with 1000x the network.


Jack & Jill will not just disrupt the existing recruitment software market, but also the 10x bigger recruitment services market.


We’re moving at breakneck speed

We’re just over 2 months old, we’ve built two remarkable products, have thousands of users, paying customers and a spectacular early team. The technology is ready and 10x better than the status quo – we need to build and execute at a relentless speed to build on this early momentum and bring it to the world as fast as we can.


We have thousands of users having an incredible experiences with Jack & Jill.


👀 Who are we looking for?


We’re looking for a Founding Engineer to help us build Jack & Jill into the default way people find jobs!


You’ll be a great fit if:


🧠 You’re smart

We’re building at pace in an ambiguous, changing environment. We believe that general intelligence correlates highly with performance, particularly in such a context.


🎯 You’re product-focused

You want to make a real difference how millions of people spend most of their lives! We’re building at the bleeding edge of AI, but we’re not academics. Regardless of whether it’s by using the latest AI models or by simply talking to a customer; it’s the impact that matters to you, and you’re able to think about the customer, the product and the technology simultaneously.


🏆 You’re an ambitious overachiever

You’ll have shown your ambition and excellence in your life. Whether that’s academically, professionally, in a sporting context, or in whatever else you’ve done. We want people that hold themselves to a high bar and are exceptional.


🏃You want to move fast

We’re looking for people who want to move fast. We’re determined to become the default way people find jobs and we won’t get there by moving slowly. That means the hours may be long and we’ll have to make smart trade-offs, but we’ll change the world whilst doing it!


📈 You’re high agency

We’re looking for people to take ownership, who don’t need to be told what to do, but like being given hard, complex problems and finding creative solutions.


🤝 You’re a good team player

We need to be excellent individually, but a small team of exceptional people is so more than the sum of its parts. We’re going to be spending a lot of time together and we have no space on the team for brilliant jerks.

(We’re working in-person at the Entrepreneurs First offices in London, so you’ll be surrounded by builders!)


💻 Our tech stack


  • Next.js + Typescript
  • Python (FastAPI)
  • PostgreSQL


(But we’re stack agnostic – we believe the best engineers can pickup any tech stack…)



🎁 And there's also the perks...


We’re building a high-performance environment. You’ll work hard, and we want to clear your plate to make sure that you have everything you need to be able to perform at your very best!


💸 Above market salary £140k - £200k

📈 Generous equity 0.1% - 0.7%

🏥 Private health insurance

🚗 An Uber home if you’re working late

🍲 Dinner in the office

🧽 Fortnightly home clean

💻 Brand new MacBook

Key Skills

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Posted
Jun 16, 2025
Type
Full-time
Level
Mid-Senior
Location
London Area

Industries

Technology Information Internet

Categories

Finance Sales

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