Applied AI Engineer

Reposted Yesterday
New York, NY, USA
In-Office
175K-250K Annually
Mid level
Artificial Intelligence • Fintech • Software • Financial Services
The Role
The research engineer will build and enhance Sapien's AI systems for finance, focusing on agent architecture, data parsing, and performance benchmarking, while developing new intelligent solutions for complex financial workflows.
Summary Generated by Built In
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 the AI agent capabilities that power Sapien's autonomous finance operations. This means designing novel architectures for reasoning over complex financial data, implementing verifiable and observable agent workflows, and building systems that learn and adapt to each company's unique operations.

This is a research-meets-product role. You'll work on cutting-edge agent capabilities—from observability and library learning to semantic search and multi-modal parsing—and ship them directly into production for customers.

What you'll do
  • Design and implement agent architectures that enable observability, human-in-the-loop verification, and precise context control across complex financial workflows.

  • Build library learning systems that reduce LLM dependencies by learning reusable patterns for planning, code generation, and data localization from customer interactions.

  • Create graph-based company representations and develop efficient search methods using embeddings, semantic clustering, and custom retrieval strategies.

  • Build multi-modal parsers that unify diverse financial data sources (Excel, ERPs, CRMs) into coherent, queryable schemas that agents can reason over.

  • Design benchmarking and evaluation suites that quantify Sapien's accuracy, reliability, and business impact across different customer workflows.

What we're looking for
  • Strong algorithmic thinking. Demonstrated through ML research, competitive programming, mathematics, or building novel systems from scratch.

  • Experience with modern agent frameworks, LLMs, and AI systems: fine-tuning, retrieval augmentation, tool use, or agentic architectures.

  • Comfort working end-to-end: from implementing research ideas and prototyping architectures to deploying production systems and iterating on real customer feedback.

How you work (values we care about)
  • Adaptability: You thrive on diverse, open-ended problems. One day you're implementing a new agent architecture, the next you're debugging a customer data issue—and you bring the same intensity to both.

  • Ownership: You take problems from research paper to production. You don't wait for direction—you identify what needs to happen and drive it to completion.

  • Opinionated: You have strong technical perspectives on what works and what doesn't. You push back on approaches you disagree with and make the team's thinking sharper.

  • Mission-driven: You're energized by building AI that transforms how businesses run. You connect technical decisions to real customer outcomes and care deeply about the impact.

  • Collaborative excellence: You share knowledge, give thoughtful feedback, and invest in making the team better. You bring new ideas from papers and discussions to elevate everyone's thinking.

Skills Required

  • Strong engineering skills and intuitions
  • Experience solving complex, open-ended problems
  • Deep algorithmic thinking from ML research or competitive programming
  • Experience building production-grade systems at scale
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The Company
HQ: New York City, New York
9 Employees

What We Do

The AI-native intelligence platform for FP&A, strategic finance, and BI. Building the AI that runs companies, better.

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