Software Engineer (+ Equity) at Sapiom
Jack & Jill/External ATSThis 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: Software Engineer
Company Description: Sapiom - $15M Seed-stage fintech building financial infrastructure for AI agents
Job Description:
As a foundational engineer at Sapiom, you will build the critical payment and identity rails that allow AI agents to operate autonomously in the real economy. You will own entire systems end-to-end, from KYA (Know Your Agent) protocols to multi-rail payment execution, defining how machines trade and transact at scale.
Location: San Francisco, USA
Why this role is remarkable:
Join a world-class founding team from Shopify, Affirm, and Modern Treasury backed by tier-one investors including Accel, Anthropic, Coinbase Ventures, and Menlo Ventures.
Build a entirely new category of ""Agentic Fintech,"" solving the unique challenges of machine-to-machine commerce and micro-transactions that current financial rails cannot handle.
Experience true high-agency ownership with no PMs or guardrails, moving at the velocity of a small, elite team at the absolute frontier of AI and infrastructure.
What you will do:
Design and implement robust financial infrastructure for AI agent wallets, spending controls, and automated multi-rail payment systems.
Collaborate directly with the founders to architect the core platform, making high-stakes decisions that shape the company’s technical trajectory.
Develop automated systems that enable AI agents to independently navigate the API economy, including compute provisioning and service procurement.
The ideal candidate:
Deep expertise in financial infrastructure, payments, or developer platforms from high-signal companies like Stripe, Modern Treasury, Vercel, or Coinbase.
A ""frontier-first"" mindset with the conviction that AGI is imminent and a relentless drive to automate every possible layer of the business.
Exceptional engineering pedigree, whether as a staff-level architect with deep ledger DNA or a high-agency junior with a history of raw hackathon hustle.
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.
Next steps
Step 1. Visit our website.
Step 2. Click 'Talk to Jack'.
Step 3. Talk to Jack so he can understand your experience and ambitions.
Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role.
Step 5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction.
Step 6. If not, Jack will find you excellent alternatives. All for free.
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.