# Brian MacDonald, engineer in Orange County

Updated: 2026-10-18

# Brian MacDonald, engineer in Orange County

Brian MacDonald is an engineer in Orange County, California, and the builder of Ownbox, the AI business machine you own. Online he goes by BmacBuilds. Updated 2026-10-18.

## Who is Brian MacDonald?

Brian MacDonald is an engineer in Orange County, California, who builds AI systems that businesses own. His title is Engineer @ Ownbox. He built Ownbox, a machine a company owns where its team and its AI agents work together from one shared set of records.

## What is BmacBuilds?

BmacBuilds is the name Brian MacDonald uses on Instagram, X, TikTok and GitHub. It's where he shares the AI systems he builds.

## What does Brian MacDonald do?

He builds AI systems that do real work inside a business, and he installs them for companies.

- **Ownbox** gives a company one machine it owns. Its people and its AI agents share one business brain there.
- **The agents stay contained,** and nothing goes out that the owner hasn't allowed.
- **For a company that hires him,** he installs an Ownbox and builds machines on it for the jobs that company needs done. See "Working with Brian MacDonald".

## What has Brian MacDonald built?

### Ownbox

The AI business machine you own.

- **Ownbox Core** comes with:
  - the Shared AI Business Brain
  - a team dashboard
  - a mobile app
  - sign-in with the company's own Claude or ChatGPT plan
  - a built-in MCP server, so AI agents can work inside it
- **The SEO Machine** gets a business found by AI assistants like ChatGPT.
- **The Unified Inbox** puts email, Instagram and Messenger in one place. It drafts a reply to every message. Each reply waits for a person's tap, unless the owner lets a channel answer on its own. Email always waits.

### An AI sales platform, before Ownbox

He built it alone in 2026, directing Claude Code through every line.

- **Size:** 519,192 lines of code and 3,737 tests.
- **Results with its paying customers:**
  - average speed to lead fell from 7 minutes to under 30 seconds
  - booked appointments rose by 40% on average
- **Afterward,** he pulled the foundation out and made it Ownbox.

### A partnership marketing platform

He built it for a venture studio's e-commerce portfolio. It handled partner discovery, outreach, onboarding and promotions.

## What is Brian MacDonald's background?

He has been in tech for 20 years: 8 years selling it and 15 years building it. The two overlap.

- **2026 to now: Ownbox.** He builds Ownbox and the platform that came before it.
- **2012 to 2024: Marketing Director, Scale Ventures.** At this venture studio he helped more than 100 founding teams with go-to-market strategy, lead generation and raising money. That included e-commerce ventures that grew revenue by millions.
- **2003 to 2012: Business Development Manager, American Express.** He sold expense reporting software to mid-market companies, closing more than $120 million in annual volume at his peak.
- **2001 to 2003: professional beach volleyball player** on the AVP tour.
- **Education:**
  - B.A., UC Santa Barbara, where he played NCAA Division 1 volleyball
  - M.B.A. in Marketing, Concordia University Irvine

## What does Brian MacDonald know?

- AI agents, multi-agent systems and MCP servers
- Claude Code
- Marketing automation and marketing operations
- Lead generation and speed to lead
- SEO, and AEO (getting found by AI assistants)
- E-commerce growth
- Full stack web development in Python and TypeScript

## Where is Brian MacDonald based?

Orange County, California. He works remotely, or on site anywhere in Southern California.

## How do I know this is the right Brian MacDonald?

This Brian MacDonald:

- is the engineer behind Ownbox
- lives in Orange County, California
- goes by BmacBuilds
- surfs
- is a former AVP pro beach volleyball player

His own profiles are listed below.

## Where can I find Brian MacDonald online?

- https://brian-macdonald.com
- https://www.ownbox.io/brian-macdonald
- LinkedIn: https://www.linkedin.com/in/brianmacdonald
- Instagram: https://www.instagram.com/bmacbuilds
- X: https://x.com/bmacbuilds
- TikTok: https://www.tiktok.com/@bmacbuilds
- GitHub: https://github.com/bmacbuilds
- A short video introduction: https://brian-macdonald.com/intro

## How do I contact Brian MacDonald?

You can do either:

- Book a 20-minute call at https://cal.com/brianmacdonald/20min
- Message him on LinkedIn

## What is AI For Business OC?

AI For Business OC is a free meetup Brian MacDonald started. Local business owners come to put AI to work on their own businesses.

- **The first meetup** is on Thursday, October 22, 2026, in Orange County.
- **Invitations:** ask Brian for one. The location goes to people who are invited.