Get live statistics and analysis of Max Mullen's profile on X / Twitter

Co-founder @InstacartđŸ„•đŸ›’, startup investor

2k following56k followers

The Entrepreneur

Co-founder of Instacart and an active startup investor who mixes product-first smarts with founder empathy. Tweets range from humblebrags to genuinely useful product/AI updates, making him a go-to voice for builders and operators. Witty, networked, and unabashedly proud of his journey.

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Congrats on finally earning that YC shirt, took a dozen years and just enough humblebrags to make every founder feel simultaneously inspired and mildly guilty.

Co-founding and scaling Instacart into a major consumer platform and demonstrating meaningful AI integrations (e.g., shopping agents) that translate experimental tech into real product value.

Build and scale consumer products that simplify everyday life, then use the lessons and capital from that journey to help the next generation of founders win.

Believes in shipping quickly, chasing product-market fit, the multiplier power of strong founder networks, pragmatic optimism, and that applied AI should make real user tasks (like grocery shopping) noticeably easier.

Sharp product intuition, credibility from building a unicorn, wide founder/investor network, clear concise storytelling, and an early eye for AI that sticks to real user value.

Sometimes skews insider (founder-only vibes) or leans into humblebrag territory, which can limit appeal to broader audiences; juggling founder + investor roles can scatter focus.

To grow on X: 1) Post short founder lessons and repeatable playbooks in tweet threads (real actionable value = shareable). 2) Show behind-the-scenes investor updates and founder Q&As, people love process, not just wins. 3) Use short video or demo clips of AI integrations to drive attention and retweets. 4) Host periodic AMAs or X Spaces with founders you back to leverage network effects. 5) Pin a digestible 'about + how I can help founders' tweet, and reply more to founders’ tweets to amplify community signal.

Fun fact: It took 12 years to earn that @ycombinator shirt, and he shared the victory. Co-founder @Instacart, investor, ~40k followers, ~2.8k tweets, and an early promoter of consumer AI integrations.

Top tweets of Max Mullen

Some personal news! Recently, I stepped back from the day-to-day at @Instacart to focus on investing full-time. I sat down with my friend @jaltma on Uncapped to talk about building Instacart and my philosophy on early-stage investing — check it out here!

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Super excited to work with @OpenAI on today's Operator launch — it's the first consumer AI agent I've seen that's *actually* useful...for example, it can shop on @Instacart for you youtube.com/watch?v=CSE77w


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Just gave a talk at @HF0Residency that an AI wrote for me, after training itself on videos of all the previous talks I’ve given + my blog posts. Wild world.

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Listen to my chat with @brettberson about my favorite topic: how to build, measure and scale company culture...

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Spent the past 2 hours @HF0Residency talking to founders about the latest in AI, then a driverless @Cruise drove me home for free. It’s easy to be optimistic about SF’s future.

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In 2012, @shiftb , @apoorva_mehta and I shared a vision for the future: that we could make grocery shopping effortless. Almost everyone thought the idea was crazy. They said it had been tried before and failed — that we’d be squashed by the biggest ecommerce companies in the world. But we knew they were wrong. We saw a future others didn't and had the courage to try to build it. Today, @Instacart helps millions of households get their groceries delivered each week. With the strength of our business, a clear vision, and a world-class leadership team in place, I’m moving into an advisory role at Instacart with complete confidence in the company’s future. To all of our partners, shoppers and customers: thank you for putting your trust in us. To the Instacart team, past and present: thank you for rolling up your sleeves alongside me to build an epic company! Building Instacart has been the privilege of a lifetime and I'm incredibly energized to use my experience to help the next generation of founders as an early stage investor. đŸ„•

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Our mission is to give everyone access to the food they love AND more time to enjoy it together. Today we moved one step ahead by launching SNAP on @Instacart in all 50 states. Huge congrats to the Health team and our retail partners working tirelessly to reduce food insecurity!

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Most engaged tweets of Max Mullen

Some personal news! Recently, I stepped back from the day-to-day at @Instacart to focus on investing full-time. I sat down with my friend @jaltma on Uncapped to talk about building Instacart and my philosophy on early-stage investing — check it out here!

40k

Listen to my chat with @brettberson about my favorite topic: how to build, measure and scale company culture...

0

Super excited to work with @OpenAI on today's Operator launch — it's the first consumer AI agent I've seen that's *actually* useful...for example, it can shop on @Instacart for you youtube.com/watch?v=CSE77w


38k

In 2012, @shiftb , @apoorva_mehta and I shared a vision for the future: that we could make grocery shopping effortless. Almost everyone thought the idea was crazy. They said it had been tried before and failed — that we’d be squashed by the biggest ecommerce companies in the world. But we knew they were wrong. We saw a future others didn't and had the courage to try to build it. Today, @Instacart helps millions of households get their groceries delivered each week. With the strength of our business, a clear vision, and a world-class leadership team in place, I’m moving into an advisory role at Instacart with complete confidence in the company’s future. To all of our partners, shoppers and customers: thank you for putting your trust in us. To the Instacart team, past and present: thank you for rolling up your sleeves alongside me to build an epic company! Building Instacart has been the privilege of a lifetime and I'm incredibly energized to use my experience to help the next generation of founders as an early stage investor. đŸ„•

2k

Just gave a talk at @HF0Residency that an AI wrote for me, after training itself on videos of all the previous talks I’ve given + my blog posts. Wild world.

24k

Using Palabra.ai is like having your own UN interpreter. It’s a mind blowing experience to have a realtime two way conversation with someone in another language.

7k

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