Join as a founding engineer to build a next-generation system of record that leverages custom AI agents and a bespoke data platform. You will redefine manual accounting workflows from the ground up, working directly with the founders to ship fast, iterate on customer feedback, and own high-impact projects from conception to delivery.
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London, UKNot Disclosed + Equity
Featured roleLondon, UKNot Disclosed + Equity
Founding Product Engineer at Briefcase
Briefcase is seeking a Founding Product Engineer in London to build a groundbreaking system of record that leverages custom AI agents to automate manual accounting. As an early hire, you will work directly with the founders, own massive projects end-to-end, and shape the future of financial services technology. If you are a product-obsessed engineer who thrives in high-autonomy environments and loves shipping fast, this is your chance to join a high-growth startup at the ground floor and earn founding team equity.
Overview
Why this role stands out
Company
Software Development2-10
Briefcase - AI-driven system of record automating accounting workflows
Responsibilities
What you will do
- Design and deploy custom AI agents and automated workflows to eliminate manual accounting tasks for enterprise customers.
- Partner directly with founders to spec, prioritize, and deliver core product features while maintaining a bias towards shipping fast.
- Architect and refine the technical stack, experimenting with modern tools to ensure the platform remains powerful yet simple to use.
Candidate profile
Who this is a fit for
- Proactive engineer with a high degree of autonomy and a proven track record of outperforming peers in fast-paced startup environments.
- Technically proficient in modern stacks including React, TypeScript, GraphQL, Temporal, AWS, and passionate about cutting-edge AI technologies.
- Product-minded individual who enjoys in-person collaboration and is excited to own end-to-end projects that deliver tangible value to customers.
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What makes it remarkable
Why this role is remarkable
- Founding team equity and influence provide significant financial upside and the chance to shape the company's core culture and technical DNA.
- You will push the frontier of financial services by building industry-leading AI agents within a product-obsessed, high-velocity engineering environment.
- Direct collaboration with founders on a system of records platform designed to automate complex, manual workflows for a clear and immediate market need.
Jack & Jill
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.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.
I recruit from Jack’s network and make the intro when I spot a great match.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.
About Jack & Jill
Meet Jack
Jack gets to know what you are great at, what you want next, and makes sure Jill considers you for the right opportunities.
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.
Jack