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Founding Marketer

a0.dev (YC W25), San Francisco, CA, United States


About Us
a0.dev is an AI platform that turns app ideas into real, revenue-generating mobile apps. Users enter their idea and our AI designs, codes, tests, and ships it to the App Store, handling everything from infrastructure to deployment in one place. We were one of the first AI mobile app builders in the market and have helped over 300k people bring their ideas to life. We’re a small, well-funded, in-person team in San Francisco backed by Y Combinator and other top investors. We believe the future is one where anyone can invest in their ideas regardless of technical experience, and we’re building a platform that helps people not just create apps, but launch them, market them, monetize them, and turn their ideas into real businesses that reach millions of users.

The Role
We’re looking for a Founding Marketer to help scale a0.dev and lead the launch of our next product. You’ll work directly with the CEO to bring something new to market, shape how we position it, and get it in front of the right people. This is a generalist role spanning product, performance, and brand marketing, where you’ll take our early traction and turn it into real growth by creating content, running campaigns, talking to users, and driving distribution wherever it works.

You’ll be deeply involved in the early days of this new product, helping us find product-market fit through rapid iteration, tight feedback loops, and constant experimentation. We’re a small team moving quickly, and this role will help build the foundation for how marketing works at a0.dev as we grow from serving hundreds of thousands of users to tens of millions. You’ll have real ownership and play a key role in scaling the company and defining how we reach and impact a global audience.

Who You Are

High agency, you figure things out and don’t wait for instructions

A doer, not just a strategist, you actually execute and ship

Startup-minded with strong entrepreneurial energy

Creative with good taste, you know what makes content engagingActive on social media and understand how things spread online

Comfortable with ambiguity and moving fast without a playbook

Strong communicator, especially in writing and content

Fun to work with, brings good vibes

Lives in or willing to re-locate to SF

What You’ll Do

Build and execute a plan to launch and scale our next product

Create and test short-form content across TikTok, Reels, and X

Run and iterate on paid acquisition across Meta, TikTok, and other channels

Talk to users regularly and turn insights into better messaging and growth

Experiment with different distribution strategies and double down on what works

Contribute to product decisions by bringing in user feedback and growth insights

Help define our brand, voice, and positioning as we scale

Use AI tools aggressively to create content, run experiments, and move faster across everything you do

Build and launch your own ideas using our products

Bonus Points

Experience creating content that has gotten meaningful reach or engagement

Experience running paid ads (Meta, TikTok, Google)

Experience with UGC or working with creators

Previous startup experience

You’ve built or grown something on your own, even if it’s small

Why Join Us

Competitive pay + benefits

Meals covered when you're in office (lunch daily, dinner when you're working late)

Work directly with the founders with transparency and influence over how the business operates

Build and own the growth engine instead of inheriting one

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