Kepler is hiring a
Full Stack Engineer
About Kepler
We're building the trust layer for AI in high-stakes industries. The LLM orchestrates (decides what data to gather, what to compute, how to structure the output), but the model never touches the data itself. Every actual value flows through deterministic code pipelines with provenance metadata back to source. Verification loops cross-check outputs before users see them. We started in finance because tolerance for wrong answers is zero. First product is a research platform for buy-side analysts: pull comparables, build models, research filings. Same architecture extends to chemicals, legal, healthcare. Models are commoditizing fast; the trust layer is what's missing. In-office NYC.
Job Description
Looking for a Full Stack Engineer to join Kepler's founding team in NYC. 5 years production experience required. Strong in TypeScript/React; comfortable in backend work. Stack: Rust backend (orchestration, extraction, computation), TypeScript/React frontend, PostgreSQL, AWS. Model-agnostic, currently Claude + GPT. We don't require Rust experience; we hire on fundamentals. Responsibilities include building a source-explorer UI that traces any value back to its exact origin in the original document; creating an extraction pipeline for a data source we don't yet handle, with provenance and verification from day one; building an agent orchestrator that handles partial failures so a bad extraction from one source doesn't block parallel work; and implementing verification rules that cross-check values across multiple sources and surface conflicts with provenance on both sides. In-office NYC. Salary: $230K-$260K + equity. Founding team with Palantir background; backed by founders of OpenAI, Meta AI Research, MotherDuck, dbt Labs.Remote Conditions
On-site in New York City; remote not available
Location
New York, NY
Salary
230K
to
260K
Benefits
equity
Tech Tags
Equity Offered
Senior Role
Date Listed
03 May, 2026 (4 days ago)
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