Jack Altman logo
Jack Altman logo
Jack Altman logo
Jack Altman logo

Jack Altman

An American entrepreneur and the founder of Hydrazine Capital and Lattice.

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Companies
Company
Roles
Crosschq

Crosschq is a technology platform that provides a human intelligence-based hiring platform.

Investor
Writer

Writer is an AI writing assistant developed for content teams. It provides individuals, teams, and companies the ability to create and enforce a writing style guide to help them improve their branding.

Investor
WorkRamp

A company building training software for workforce for companies

Investor
Cortex (microservices company)

Cortex is a San Francisco-based software platform that manages and operates microservices. The company was founded in 2019 by Anish Dhar, Ganesh Datta, and Nikhil Unni.

Investor
Cal.com

Open Source Scheduling: Send a link and meet or build an entire marketplace for humans to connect.

Investor
Zowie

Customer interactions with speed and empathy. Automate questions, build relationships and turn support into sales.

Investor
Pulley (company)

Pulley is a Mountain View, California-based software tool for cap table management founded by Yin Wu. Pulley helps private companies issue employee and investor equity and maintain accurate ownership records.

Investor
Routable

A company that manages company's cash flow, automating sending and receiving payments, finding errors, requesting authorization from supervisors and streamlining cash flow

Investor
Sensible

The powerful, flexible API that transforms documents into structured data

Investor
Sora

Sora enables users to connect HR tools, sync employee data, and automate HR processes.

Investor
Courier (company)

Courier offers a platform to connect and publish notifications across messaging channels. It was founded in 2019 and is located in San Francisco, California.

Investor
PlanetScale

PlanetScale is a database-as-a-service platform acting as a middleware system for MySQL.

Investor
LlamaIndex

LlamaIndex is an open-source data framework for connecting custom datasets with large language models (LLMs) in order to build applications.

Investor
Chroma

Chroma is a company developing an open-source embedding database (or vector database) for developing LLM apps.

Investor
Basis

Basis operates as an AI platform built specifically for accounting firms.

Investor
Lattice (company)

Lattice is a people workforce management platform for goal management, weekly check-ins, and performance reviews.

CEO