AI Engineer

Hilbert's AI•San Francisco, CA

5h•Onsite

About The Position

Hilbert is a scalable, data science-first growth engine that gives B2C teams predictive clarity into user behavior, revenue drivers, and the actions that drive sustainable growth. Fully agentic by design, Hilbert shrinks months-long decision cycles to minutes. From Fortune 10 enterprises to beloved brands like FreshDirect, Blank Street, and Levain Bakery, operators run their growth on Hilbert. We're also co-building alongside leading AI companies. We're looking for an AI Engineer who can build production-grade AI systems end-to-end - from prototype to pipeline to product - with the ownership and urgency of a startup culture. This is not a "fine-tune a model and hand it off" role. You'll own core pieces of the AI stack that power Hilbert's demand intelligence platform, ship fast in conditions where the spec is evolving, and communicate what you're building (and why) with clarity to the rest of the team. If you write clean Python, think in systems, and want to build AI products that drive real enterprise outcomes, we want to meet you. You'll work directly with the founding team and across product, data, and GTM to design, build, and improve the AI systems at the heart of Hilbert. The environment is high-autonomy and high-ambiguity - the nature of building AI-native products means requirements shift, approaches evolve, and the person closest to the problem often makes the call.

Requirements

You're a strong Python engineer. Your code is clean, testable, and production-ready.
You have real experience with LangChain, LangGraph, or equivalent agent/orchestration frameworks. You've built with them, hit their limits, and worked around them - not just followed tutorials
You communicate with clarity and conviction. You can explain a technical decision to a non-technical founder and debate architecture tradeoffs with a senior engineer . Communication is not a nice-to-have here - it's core to the role
You take ownership. You don't wait for tickets. You see what needs to be built, raise your hand, and ship it
You thrive in ambiguity. AI products evolve fast. Requirements change. You're energized by figuring it out.
You move at startup speed. You understand what it means to be available, responsive, and biased toward action in a fast-moving, early-stage environment

Nice To Haves

Experience building evals pipelines — designing metrics, running systematic evaluations, and using results to drive iteration on AI systems
Backend software engineering experience — building APIs, services, data infrastructure, or production systems beyond the ML/AI layer
Exposure to retrieval-augmented generation (RAG), vector databases, or LLM-powered search and recommendation systems
Experience at early-stage startups or high-growth environments where you wore multiple hats

Responsibilities

Design, build, and maintain AI-driven features and pipelines that serve enterprise customers at scale
Architect and implement agent-based workflows using LangChain, LangGraph, or equivalent orchestration frameworks
Own systems end-to-end — from experimentation through production deployment and monitoring
Build and improve evaluation pipelines to measure, validate, and iterate on AI system performance
Collaborate closely with the founding team and cross-functional partners — communicating tradeoffs, progress, and technical decisions with clarity
Make pragmatic engineering decisions under ambiguity — ship, learn, iterate
Shape the technical direction of the AI stack as the company scales