Mission:
Sphere has built the world’s first AI-native tax engine that helps companies like Eleven Labs, Replit, Runway AI, Windsurf (+ many more) automate their sales tax, VAT and GST obligations:
Sphere is looking for a versatile full stack engineer who can jump on different mission critical areas to help accelerate its production - e.g. filing infrastructure, tax engine and new product areas (input tax, withholding tax, e-invoicing).
These areas are key levers towards scaling Sphere and growing ARR, meaning that your work will have a direct impact on the growth of the business
Why this is a massive opportunity:
🌍 Massive TAM: Every business around the world needs this. Compliance isn’t optional.
🌬️ Strong macro tailwinds: Businesses are expanding globally at a faster pace, while tax authorities are cracking down on cross-border compliance, driving urgent demand.
✨ AI advantage: Incumbents can’t scale beyond the U.S.; our AI-native tax engine can.
🔮 Product vision: Indirect tax is just the start; we’re building the Deel for international billing.
What you will do:
Within weeks:
Within months:
What’s important to us:
Requirements:
Nice to have:
AI-powered sales tax, VAT and GST compliance
AI Agent Infrastructure Lead
Founding Account Executive (Europe)
Lead AI Engineer
Senior Full Stack Engineer
Founding Growth Lead
Salary
$180,000 - $250,000
Location
San Francisco, CA, US
Experience
6+ years
Total raised
$25.3M
Last stage
Series A
Investors
No applications, no recruiter spam. Just the intro.
A few questions to make sure this role is the right shape for you. Two minutes.
I write the intro, send it to the founder, and handle the back-and-forth.
If they’re a yes, I book the chat. You show up — that’s the whole job-hunt.