Mariah Brunner Quit Meta to Start a Clothing Brand. Now She Runs Her Businesses on AI and Teaches Thousands to Do the Same

Mariah Brunner spent her early career helping some of the biggest brands in the world grow through paid ads, first at Amazon and then at Meta. Eventually, she says, a question started nagging at her: “Why am I not just doing this for myself?”

In 2019 she quit Meta and found out. Seven years later she is a two-time founder, has run her companies from three countries, and has built a following of about 56,000 people on @itsmariahbrunner on TikTok by teaching AI.

Key takeaways

• Brunner worked in advertising at Amazon and Meta, helping major brands scale through paid ads.
• In 2019 she quit Meta and started a clothing brand with her husband. She says it has sold millions of products.
• The couple ran their businesses remotely while living in Indonesia, Thailand and Mexico.
• She now runs two e-commerce brands and says AI handles about 90% of her operations and back-end work.
• Her 30-day AI Challenge has taught more than 4,000 people to build AI agents, workflows and systems.

Who is Mariah Brunner?

Brunner describes herself simply: former Meta and Amazon, two-time founder, and someone who won’t stop talking about AI. In a video introducing herself to new followers, she lays out the path. She started in tech advertising, helped large brands grow through paid ads, then decided to use that skill for her own company.

Let me introduce myself

“In 2019, I quit my job at Meta, and my husband and I started a clothing brand,” she says, “and we have sold millions of products over the years.” They then moved to Indonesia, Thailand and Mexico, living abroad and running the businesses remotely.

How did she start a business with no funding?

Brunner is candid that she did not start with much. “I started my first business with no funding, no business experience, and basically only one very useful skill,” she says in a video about optimism, “which is I knew how to run Meta ads better than anyone else.”

That one skill was enough. She says running ads on Meta is the main way she scaled both of her businesses, spending millions of dollars on the platform she used to work for. Her takeaway for other founders is a mindset: assume you will figure it out. Entrepreneurship, she says, “requires a slightly delusional amount of optimism.”

Why did she start teaching AI?

Over the past year, Brunner went deep on using AI inside her companies, and she says it changed how much a small team could do. On her website, Learn AI With Mariah, she says AI now handles about 90% of her operations and back-end work, from research and writing to running her Meta and Google ads.

The teaching started by accident. At dinner with friends, she realized none of them were using AI the way she was. She went home, read about the gender gap in AI adoption, and in her words got “mildly enraged.” So she decided to post everything she knew online. She had never created content before.

The response surprised her. She says a quarter of a million new people found her in a couple of months, and calls it “one of the coolest, the most unexpected things that has ever happened to me.”

What is the AI Challenge?

Brunner’s 30-day AI Challenge is a 30-day program that walks people from barely using ChatGPT to building real AI agents, workflows and automated systems for their jobs, businesses and personal lives. It uses long-form video lessons and build-along prompts, and requires no code. More than 4,000 people have taken it, according to her site.

She also shares ready-made AI agents for specific jobs, including a Meta media buyer, a Google media buyer, an email marketer and a creative director.

What does she tell founders about Meta ads?

Having worked at Meta and then spent heavily on its ads, Brunner has a short list of lessons she shares in one video:

• Look for winning reasons people buy, not winning ads. Test different problems, desires and objections, then carry what works into your landing pages and emails.
• Your data is part of your targeting now. Clean tracking, like your pixel, conversions API and purchase values, matters more than most people think.
• Don’t let Meta grade its own homework. Judge results by new-customer cost, margin and total revenue, not just the return Ads Manager reports.

Her view of AI here is practical: use it to shorten the feedback loop, spotting creative fatigue, wasted spend and patterns in your data, rather than to churn out hundreds of weak ad images.

Frequently asked questions

Who is Mariah Brunner?

Mariah Brunner is a former Amazon and Meta advertising specialist, a two-time e-commerce founder and an AI educator who posts on TikTok as @itsmariahbrunner.

What business did Mariah Brunner start after Meta?

In 2019 she quit Meta and started a clothing brand with her husband. She says it has sold millions of products. She now runs two e-commerce brands.

How does Mariah Brunner use AI in her business?

She says AI handles about 90% of her operations and back-end work, including research, writing and running her Meta and Google ads.

What is Mariah Brunner’s AI Challenge?

It is a 30-day, no-code program that teaches people to build AI agents, workflows and systems for work, business and life. More than 4,000 people have taken it.

Where can I follow Mariah Brunner?

She posts about AI and tech on TikTok at @itsmariahbrunner, and her guides and challenge are at learnaiwithmariah.com.

This profile is based on Mariah Brunner’s public videos and website. Booked Impact did not interview her, and she did not review this article before publication. Business figures are as stated by Brunner.