Harry Mellsop Harry Mellsop - casual

Harry Mellsop

New York, USA · Auckland, New Zealand

Co-founder at Antioch. We enable leading autonomy companies to shift their development and evaluation processes from hardware-in-the-loop to pure software, backed by $40.5M from Greylock, Category Ventures, A*, and others.

Previously studied AI and economics at Stanford University, helped solve safe autonomous driving at Tesla Autopilot, and then built Transpose (exited to Chainalysis in 2023).

Experience

Antioch
Antioch 2025 –

Co-Founder

Antioch is a cloud simulation platform that enables autonomy companies to develop and test robots, perception systems, and autonomous systems in pure software. We work with physical AI teams including Amazon's Ring, and partner with NVIDIA and Nebius on the infrastructure underneath. We have raised $40.5M to date, most recently a $32M Series A led by Greylock, with Category Ventures, A*, MaC Venture Capital, Abstract, Boxgroup, Icehouse Ventures, Shyam Sankar, Adrian Macneil, and others.

Transpose
Transpose 2022 – 2025

CTO

Transpose is the leading blockchain data platform, powering real-time indexing and threat intelligence for any blockchain data. We serve the world's leading national security, law enforcement, tax, and regulatory agencies, as well as major private sector institutions in finance, software, security, and more. Transpose was rebranded to 'Chainalysis Data Solutions' after our acquisition.

Acquired by Chainalysis in 2023
Tesla
Tesla 2022

Vision Engineer, Autopilot

At Tesla, I worked on computer vision and neural network systems for Tesla's autonomous driving stack, including leading the driver monitoring program.

Crimson Education
Crimson Education 2021 – 2022

VP Product

At Crimson, I led the product and engineering strategy across the company, including managing the acquisition and integration of Revision Village.

Education

Stanford
Stanford University 2020 – 2022

M.S. Artificial Intelligence

Siebel Scholar