Do the best work of your life
We are a seed-stage startup building the world's first AI Autopilot for Accounting.
You will have outsized ownership and impact from day one.
$3M raised from Earlybird Venture Capital, Entrepreneur First, Tiny VC and angels from Google DeepMind, Pennylane, Deel, and Pleo.
Automate the world's financial back-office
The last real innovation in accounting was the shift from desktop to cloud - over a decade ago. Since then, workflows have remained overwhelmingly manual, tedious and time-consuming.
At Briefcase, we are radically automating these workflows end-to-end using AI agents, so that humans are pulled in only as an exception, not as a default.
Once upon a time, computer was a job title. Technology turned it into a tool, and the world became dramatically more productive. Now we're doing the same with repetitive knowledge work.
A team that ships like a company
ten times our size
Ship fast, stay close to customers
We deploy to production 50+ times a day. Every team member provides customer support creating short feedback loops between what we ship and what customers need.
Everyone codes
Everyone in the company ships code, including commercial team members. Modern AI editors have democratised shipping. This builds deeper product comprehension across the team.
Build for verification, not review
We pair probabilistic AI agents with deterministic formal verification. We build for verifiable outcomes - if the output correctness can be measured, it can be improved.
Own our tooling
We built our own LLM observability platform because nothing on the market was good enough. Our RevOps and ProductOps are built on top of our internal tooling.
What drives us
You'll be joining a top-performing, highly ambitious team who love to work and problem solve together in our London office.
Agency
Every single person owns each project end-to-end. Everyone goes through the problem maze, struggles, earns scar tissue, and forges deep comprehension.
Product obsession
We redefine workflows from first principles, eliminating accidental complexity. We are opinionated and aim for simplicity.
Urgency
Startups live or die by execution. We are pace setters in accounting tech. No meetings for alignment; we work together in person and ship relentlessly.
Find your role
How we think
Our culture
A company is just a group of people. Briefcase is a group of people that are naive enough to think we will change the world.
Everyone codes
Every team member provides customer support, everyone contributes to our product roadmap, and everyone, including our commercial people, codes.
Build for verification, not review
How reinforcement learning with verifiable reward is reshaping AI, and why building for verifiability is the key to becoming a truly AI native company.
Building autopilot
Probabilistic AI agents paired with deterministic formal verification create the perfect combination for high trust domains like finance and accounting.
Reach out directly
Email reuben@briefcase.so (CEO) or jan@briefcase.so (CTO) with:
Why you want to work for Briefcase
The most exceptional thing you have ever done
Links to your LinkedIn, Github, and anything else relevant
Common questions
No, we believe that for our initial hires, collaborating and problem-solving together in person is essential. As such, we are not currently considering remote roles.
We work in the office 4-5 days a week, with the option to work from home on Wednesdays if it helps you focus and be more productive. Being in the office reduces barriers to communication and minimises the need for meetings, enabling us to ship faster and get more done.
No, we are currently only offering full-time positions to ensure full commitment and aligned incentives.
We're based in London, UK. Our office is in a central location that's easy to reach by public transport.
No, unfortunately we do not sponsor visas.
Ready to build the future of accounting?
Join a small team with outsized ambition. Founding-level equity, competitive salary, and the chance to shape an industry.