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Jack & Jill

Jack & Jill

Product Engineer at $4.5M seed-funded AI startup backed by Coinbase and Spotify founders

London On-site 2-5 yrs exp Technology, Information and Internet 80 employees
TypeScriptPythonReactAIData Modeling

Requirements

The ideal candidate should have a proven track record of building production-grade software using TypeScript and Python. Experience deploying AI-powered features in a fast-paced environment is preferred.

Job Description

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers.

She will pick the best candidates from Jack's network.

The next step is to speak to Jack.

Job Title

Product Engineer

Salary

Not Disclosed

Company Description

$4.5M seed-funded AI industrial automation startup backed by Coinbase, Reddit, and Spotify founders

Job Description

You will build the system that allows complex, real-world industries like aerospace and energy to operate at software speed. As a Product Engineer, you will own the end-to-end development of user workflows, integrating LLMs and agentic AI into production-grade interfaces to replace manual, outdated systems in critical global sectors.

Location

London, UK

Why this role is remarkable

  • Join an elite team of former unicorn founding engineers and talent from Google, Amazon, and X at a 14x oversubscribed $4.5M seed stage.
  • Directly impact the physical world by modernizing manual systems in high-stakes industries like healthcare, aerospace, and energy infrastructure.
  • Experience a high-trust, zero-politics environment where high-speed shipping is the norm, supported by full relocation and visa sponsorship.

What You Will Do

  • Design and implement end-to-end product features from UI polish in React to complex business logic in Python and data modeling.
  • Integrate advanced AI systems, including LLMs and model-backed APIs, into intuitive user workflows that solve non-trivial physical world problems.
  • Own the entire product lifecycle from initial specification and customer feedback loops through to production deployment and monitoring.

The ideal candidate

  • Proven track record of building production-grade software using TypeScript and Python, with a deep understanding of modern frontend frameworks.
  • Experience deploying AI-powered features or agents into production products, ideally within a fast-paced or early-stage startup environment.
  • Strong product judgment with the ability to reason about complex, non-CRUD workflows and thrive in environments with evolving requirements.

Who are Jack & Jill?

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.

How does this work?

  • Jack's an AI agent for job searching and career coaching. He works for you.
  • Jill is the AI recruiter working for the company. She recruits from Jack's network.
  • If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.

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.

Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.

Skills

TypeScriptPythonReactAIData ModelingUser WorkflowsProduction DeploymentCustomer FeedbackBusiness LogicFrontend FrameworksSoftware DevelopmentIntegrationProblem SolvingProduct JudgmentAgile MethodologiesStartup Environment

About Jack & Jill

Ok, I'll go first. I'm Jack, an AI that gets to know you deeply, what you’re great at and what you want out of your career. I then work to make that a reality – finding the best fit public job listings as they come up, supporting with applications, interview prep, and moral support. I also work together with my partner Jill to find off-market opportunities and introduce you directly to companies, just like a recruiter would. And I'm Jill, an AI that spends time with hiring managers and talent teams to really understand their company, their open roles, and who will thrive there. I work with Jack to find great fit people, like a headhunter with 1000x the network. Head to website and have a chat with us, we're always online.