BUILD THE FUTURE
IN BOSTON

We're for founders building ambitious tech companies in Boston and Cambridge. If you're actively building and want to collaborate, you belong here.

No panels, no passive audiences, only hands-on builders sharing what actually works. We focus on execution, honest lessons, and supporting each other as companies scale. Together, we are working to raise the pace and ambition of the Boston and Cambridge tech ecosystem. We are not VCs and we never take equity. Built by founders for founders. Always free.

Cohorts are small and curated for trust and speed. We look for people who are building, not just talking about it.

Access to a founder workspace, private dinners, tactical sessions, direct peer support, and a platform to share your story—all designed to help you move faster and increase the chances you succeed.

Absolutely not. You need to be building and care about building world-class companies in Boston/Cambridge.

The goal is simple: build 3x more breakout tech companies in Boston over the next 10 years.

Build617 is how we start the flywheel. Grassroots, founder led, execution focused. Get builders in the same room, share what actually works, help each other hire, ship, sell, and scale here instead of leaving.

Success looks like more companies reaching real scale, more repeat founders, more operator talent staying, and a tighter network that compounds year after year.