Manage VAT, GST, and sales tax worldwide with Sphere’s global tax compliance software. Automate registration, calculation, and filing seamlessly. Backed by Y Combinator, a16z and Felicis.
About the role
We are seeking an experienced indirect tax professional to train and continuously improve TRAM, our AI-driven tax engine. You will be the human check on the machine — reviewing TRAM's determinations and monitoring results at speed and volume, catching errors before they reach customers, and feeding structured findings back into the system so it gets smarter over time.
What they're looking for
- 4+ years of experience in indirect taxation (sales tax, VAT, and/or GST)
- Strong understanding of indirect tax systems in the US and/or internationally, with willingness to expand into whichever you know less
- Proven ability to work quickly and accurately through high volumes of tax content without sacrificing attention to detail
- Global mindset - Sphere was never built as a US-centric product, we think internationally, and we want people who join us to do the same
- High attention to detail - one of our key values is ‘Sweating the details’ and it is essential in our business
- Strong communication skills - we work at an extremely fast pace and so clear, concise communication is essential
More about this role
Every breakthrough in trade infrastructure has followed the same pattern: reduce a transaction cost, expand the market. Containerization for goods. SWIFT for money. Stripe for payments. Compliance is one of the last and largest — and the hardest, because trade rules aren't data to be looked up. They're a complex adaptive system with 190+ sovereign jurisdictions, in different languages, changing constantly, reacting to each other.
Sphere built the system that solves it. Our AI (TRAM) ingests global trade law, interprets it, resolves conflicts across jurisdictions, and produces compliance determinations more reliable than human experts. We handle the entire lifecycle — calculation, registration, filing, remittance — at millisecond latency with zero downtime.
Backed by a16z and YC. $21M Series A, 30%+ month-over-month growth, customers include ElevenLabs, Replit, Deel, Runway, and Lovable.
Small team, global surface area. Everyone owns a domain that would be a full team at a larger company. San Francisco, five days in office.
The problem keeps compounding. Expanding into input tax, withholding, e-invoicing, tariffs — each multiplies the complexity. Tens of millions of transactions...
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