JK Sparks is Head of Product Marketing at Circle, where he leads product, customer, and lifecycle marketing for one of the leading community platforms for creators and community-led businesses. With 14+ years of experience across bootstrapped and high-growth companies, he’s helped scale revenue from under $100K to over $100M through both PLG and sales-led motions. JK is also the co-founder of The Forge, a community for ambitious marketing leaders, and the creator of The Lonely Marketer. He’s passionate about building sustainable growth engines, structuring communities like products, and using AI to augment—not replace—the humans at the heart of every great experience.