The Platform That Pays Its Writers
There are plenty of platforms that host writing. There is exactly one that has built a business model around making sure writers get paid first. Substack takes 10 percent. The other 90 goes directly to the person who wrote the thing you just read. Kevin Lee works inside that machine.
The company he operates at sits at a strange and specific crossroads: part media company, part software platform, part financial infrastructure for independent journalism. Substack doesn't publish a word of content itself. It builds the pipes through which $600 million a year flows from readers to writers - and those pipes require people who understand both the craft and the code.
Substack was built on a specific disagreement with how media was evolving. The advertising model had broken journalism. Venture-backed media companies hired and fired in waves. The platforms that hosted your writing owned the relationship with your audience. Substack bet that readers would pay directly for writing they valued - and that writers would accept lower distribution in exchange for actual ownership.
By 2025, that bet had compounded into 5 million paid subscriptions, 125 million monthly visitors, and a Series C round that valued the company at $1.1 billion. The round, led by BOND and The Chernin Group alongside Andreessen Horowitz, arrived with a specific mandate: better tools, broader reach, and deeper protection for writers on the platform.
San Francisco's Most Interesting Media Experiment
Substack is headquartered at 111 Sutter Street in San Francisco - a building that houses a company that has spent years being underestimated. Critics said writers wouldn't get subscribers. They did. Critics said the 10 percent take wouldn't sustain a business. It did. Critics said the platform would fracture over content moderation decisions. The debate continues, but the subscriptions keep growing.
The technology stack underneath all of this is not simple. Substack runs on TypeScript and React frontends, PostgreSQL and Redis for data, Amazon DynamoDB for scale, Snowflake for analytics, and a cloud architecture spanning AWS and Akamai. It uses Cloudflare for DNS and security, Cloudinary for media, and Zendesk for support. None of this is accidental - it's the infrastructure for a platform that needs to handle millions of emails per day while keeping individual creator relationships intact.
What Kevin Lee brings to this environment - at an executive level in a company of approximately 100 people - is the kind of operator focus that keeps the machine running while the founders build the vision. In a company small enough that everyone touches the product, the people who understand both the business and the technology are the ones who actually ship.
The Creator Economy, in Numbers
Fifty thousand publications earn money on Substack. More than fifty individual creators earn over $1 million per year from their newsletters alone. The platform's annual creator payout - over $600 million - is larger than the editorial budgets of many major media companies. This is not a niche experiment anymore.
The growth trajectory is steep. In 2023, Substack had two million paid subscriptions. By 2025, that number was five million - a 2.5x increase in roughly two years. Monthly active subscribers across the platform now number more than 20 million. The company describes this as proof that the subscription model works at scale. The numbers make it hard to argue otherwise.
Beyond the Newsletter
Substack started as a newsletter platform. It is now something more complicated. The company has expanded into podcasting, video, community features, and a dedicated app with 20 million monthly active subscribers. The keyword list around what Substack does - journalism, writing, newsletters, media, publishing, online audio and video - tells the story of a company that keeps expanding the definition of what independent media looks like.
The 2025 Series C funding announcement was explicit about what comes next: better tools for writers, stronger protections for creator independence, and broader reach for publications on the platform. For an executive team that includes people like Kevin Lee - working at the intersection of operator discipline and media's evolving economics - the job description keeps changing, and that's the point.
Based in Chicago while operating in a company whose cultural center is San Francisco, Lee is part of a growing cohort of technology operators who prove that proximity to a coast is less important than proximity to the work. The platform he helps run doesn't care where its writers live. It cares whether they can build an audience that pays to read them.
In a media landscape full of pivots, layoffs, and platform migrations, Substack keeps doing the same thing it always did: taking 10 percent, sending 90 to the writer, and building better pipes for that transaction to happen. Kevin Lee is inside that operation, at a company that reached unicorn status by making a very specific bet on the value of individual voices - and winning it.