Full-Stack Engineer
About the role
Who we are Sapien is rethinking how finance teams operate in the age of AI. We’re building toward an autonomous CFO —systems that run company financials end-to-end. Our platform analyzes complex financial data in real time to increase decision cadence, prevent costly mistakes, and surface value. Sapien has caught multi-million-dollar errors, saved thousands of jobs, and returned significant dollars to customers’ bottom lines. We partner with traditional businesses—manufacturing, healthcare, restaurants, and large enterprises—to deeply understand and automate their financial workflows. We’re HQ’d by Madison Square Park in NYC and backed by General Catalyst, Neo , and top operators from Google, OpenAI, Microsoft, Ramp, and Stripe (over $9M raised).
The role You'll build features end-to-end for Sapien's core platform. This means taking a feature from design through frontend implementation, backend APIs, database changes, and agent integration. You own the full experience and make it work. This is role where you'll balance shipping new capabilities with keeping the platform stable and performant. You'll work directly with customers, see how they use what you build, and iterate based on real feedback.
What you'll do Build features that make Sapien a daily driver for finance teams. Design experiences that pull users in every day because the platform is proactively surfacing insights, catching issues before they become problems, and making their work faster and smarter. Design interfaces that make complex agent operations understandable and controllable for finance teams who aren't technical. Implement human-in-the-loop systems where users can give feedback, correct agent mistakes, and teach the system about their specific business processes. Build the feedback loops that make agents smarter over time. Make product and technical decisions: what should this feature do, how should the UI work, what's the right database schema, which technologies should we use. You're not just implementing specs, you're figuring out what to build.
