Senior Product Engineer

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:

• We're growing rapidly (34%+ MoM revenue growth) and helping the fastest growing tech companies around the world including Eleven Labs, Replit, Windsurf, Fathom, Linktree, Photoroom, Sierra AI, Zed etc
• We’ve spent the last 1.5 years building local rails into tax authorities in both the US and internationally to properly automate compliance processes (no other vendor has done this)
• We're building the world's first AI-native tax engine (which will be the foundation for a broader cross border compliance platform; think Deel for international billing)
• We're well funded by Felicis Ventures and YC

Sphere is looking for a passionate product engineer to help build out new features / products on our roadmap and take our customer experience to the next level.

They’ll be working directly with customers, our design and eng team as well as our CEO / Founder to bring Sphere’s product vision of becoming the world’s first cross-border compliance engine to life

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:

• Work / listen to many of our customers on what their main pain points are and prioritize lowest hanging fruit features that can help solve their problems
• Collaborate extensively with design on bringing those features to life
• Executing and shipping features, end-to-end, on a daily basis
• Doing customer support where necessary to understand our customers and how they think as much as possible

Within months:

• Own our feature / product roadmap in conjunction with the CEO / Founder (you will work a lot together)
• Build / implement more rigorous customer feedback / analysis processes to allow us to better prioritize roadmap

What’s important to us:

• The Dog: Grit > pedigree.
• Ship fast: If it can be done today, do it today.
• Self-starter: No hand-holding
• Accountability: You’ll be held accountable to objective, measurable targets each month.
• In-person: SF only.

Requirements:

• Strong experience with React. Our entire front end is built in react.
• Strong experience with Figma. In order to collaborate efficiently with design.
• Customer obsession. You’re going to be talking to a lot of people in the finance realm (Controller, Heads of Finance, Heads of Tax). You need to like them and obsess over them.
• Very strong attention to detail. When you work with numbers this is a non-negotiable - it’s not enough to be 99% right.
• Strong organization skills. We get hundreds of feature requests every day. How you monitor, organize and prioritize these is key.

Nice to have:

• Experience working with large volumes of transaction data. You’ll be getting very familiar with it!
• Experience in Python and Django. Our core application backend and data pipeline services are built with Python and Django
• Experience using tools like PostHog and Sentry