Data First Jobs

Jack & Jill

Founding AI-Native Product Engineer at seed-stage fintech data platform

Full Time · In Office · New York, New York (USA)

Posted Jul 22, 2026

Work Options
Skills
Job Type
Position Group

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

Founding AI-Native Product Engineer

Salary

Not Disclosed

Company Description

Seed-stage fintech data platform

Job Description

As a founding member of a seed-stage fintech startup, you will establish the standards for building high-stakes financial products using AI agents. You will manage multiple agentic workflows in parallel to ship complex data features while maintaining extreme accuracy. This role blends engineering leadership with hands-on product ownership in a high-growth environment.

Location

New York, USA

Why this role is remarkable

  • Define the AI-native engineering playbook from the ground up, setting global standards for agentic development patterns.
  • Join a well-funded, seed-stage startup backed by top-tier VCs with active customers and high-stakes financial data requirements.
  • High-impact founding role where you own the entire feature surface area and influence the company's technical operating model.

What You Will Do

  • Run 4-10 AI agents in parallel to execute feature development across the full stack, focusing on throughput and quality.
  • Design the "harness" for AI-generated code, including evaluation frameworks and behavioral tests to ensure data integrity.
  • Partner with product leadership to translate complex financial workflows into actionable technical specs for agentic execution.

The ideal candidate

  • 8+ years of full-stack experience shipping production applications using TypeScript, React, and Python or similar languages.
  • Demonstrated experience using agentic tools like Claude Code or Cursor on production-grade code, not just personal experiments.
  • A mindset that prioritizes product impact and feature delivery over the manual craft of authoring every line of code.

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.

Mention you found this on Data First Jobs — it helps us bring you more roles like this.

Founding AI-Native Product Engineer at seed-stage fintech data platform

Jack & Jill

Like this role? Get carefully selected jobs like it, twice a week, straight to your inbox.

Free, no spam. Unsubscribe anytime.