Zi Zhang

Building AI-native commercial loan operations | Co-founder and CTO of Proximitty (YC W26)

Co-founder

Proximitty· Winter 2026🇺🇸 United States

in LinkedIn 𝕏 @zizixcm

2025Co-founder· Proximitty

Founder · since 2025

Company

Proximitty

Role

Co-Founder and CTO

current

Stage

—

no public source

Raised

—

no public source

Based

San Francisco Bay Area

current

Founder / co-founder — the company's markEmployee / research role

Source: LinkedIn work history

Profile coverage5 of 7 · missing posts, contact

Proximitty

AI operating system for commercial loans

Winter 2026

Experience

Career

Proximitty
Co-founder
Co-Founder and CTO · San Francisco Bay Area · 2025 – Present
2025
Bloomberg
Platform Security Tech Lead · Greater London, England, United Kingdom · 2023 – 2025
2023
Bloomberg
Derivatives · New York, United States · 2021 – 2023
2021
ACI.dev
Head of Engineering · Greater London · 2025
2025
C.H. Robinson
Capstone Project · Minnesota, United States · 2020
2020
SPS Commerce
Software Engineer Intern · Minneapolis, Minnesota, United States · 2020
2020
University of Minnesota
Student Technology Help Specialist · Greater Minneapolis-St. Paul Area · 2019 – 2020
2019
Huazhong University of Science and Technology
Research Assistant · Wuhan, Hubei · 2018 – 2019
2018

Bio

Co-founder & CTO @ Proximitty (W26). Previously, led security infrastructure at Bloomberg (securing 300k+ terminals) and Head of Engineering at ACI.dev (built world's first unified MCP with 4k GitHub stars in 1 month).