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Guac Builds Machine Learning to Eliminate Grocery Inventory Waste

By Zero G Talent•

Guac is an AI-powered demand forecasting and replenishment platform designed specifically for grocery retail. Founded in 2023 out of Y Combinator's S23 batch, the 9-person startup predicts how much of each product grocers will sell on each day at each of their store locations, targeting the reduction of food waste caused by faulty inventory planning.

Data Infrastructure and ML Architecture

Guac was co-founded by CEO Euro Wang and CTO Jack Solomon. The company's infrastructure runs primarily on Google Cloud Platform—utilizing GCS, Cloud Run, and Compute Engine—with backend systems written in Python using FastAPI and Dask. For machine learning, the team uses PyTorch, XGBoost, OpenAI embeddings, and SHAP to generate store-level demand forecasts. Market research site GetLatka estimated the company reached $1.1 million in revenue in 2024.

Open Engineering and Operations Roles

Guac is currently building out its core team with four mid-level openings based onsite in New York, NY.

On the backend team, Guac is hiring a Backend Engineer ($150,000–$250,000) to build ordering and production planning services. The role involves constructing ETL pipelines and AI tools using Python, FastAPI, and MCP servers.

To build customer interfaces, the company is looking for a Fullstack Engineer ($150,000–$250,000). This engineer will own web application features end-to-end using React, Next.js, and TypeScript while building AI-native application components.

For enterprise integrations, Guac is recruiting a Forward Deployed Engineer ($150,000–$250,000) to work directly with grocery retailers. The engineer will build ETL pipelines and backend services with Python, Dagster, and SQL to integrate with customer internal data systems.

On the business side, Guac is hiring a Strategy & Operations lead ($150,000–$180,000) to work across product, deployments, and operational workflows while managing enterprise client implementations.

Current Job Openings at Guac

Role Location Work Mode Salary
Strategy & Operations New York, NY, US Onsite $150,000 – $180,000
Backend Engineer New York, NY, US Onsite $150,000 – $250,000
Fullstack Engineer New York, NY, US Onsite $150,000 – $250,000
Forward Deployed Engineer New York, NY, US Onsite $150,000 – $250,000

See all open roles at Guac