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Brett Harrison

Brett Harrison

Founder and Chief Executive Officer, director at Architect Financial Technologies.

ExecutiveDirector
Updated Nov 10, 2026·Latest SEC filing Jun 11, 2026·Suggest an edit

About Brett Harrison

Brett Harrison is a founder and chief executive officer, director at Architect Financial Technologies.

Brett Harrison first appears on SEC filings in 2023.

Experience

This experience comes from Brett Harrison's profile and from SEC filings. For roles taken from filings, the years are when the filings name Brett Harrison in the role, so the role may have started earlier or lasted longer.

Architect Financial Technologies Inc. Current
Founder and CEO (2023 – Present)
Director
2023 – Present · Chicago, IL
Provides trading technology, brokerage services and exchanges for institutional and individual investors.
FTX US
President
2021 – 2022
Citadel Securities
Head of Semi-Systematic Technology
2019 – 2021
Headlands Technologies LLC
Non-Compete Period
2018 – 2019
Jane Street
Head of Trading Systems Technology
2009 – 2018
Ember Corporation
Intern
2007

Key Colleagues at Startups

The people Brett Harrison works with at each company, as listed on that company's latest Form D.

JS
John Smollen
Director
SV
Karista Vaeth
Karista Vaeth
Deputy General Counsel and director

Sources

  1. SECArchitect Financial Technologies Inc. Form D, filed Jun 11, 2026