A pay-it-forward community of founders, builders, and operators who believe that the best way to grow is to bring others with you.
We don't believe in gatekeeping. When you've figured something out — a go-to-market play, a hiring mistake, an automation that saved 200 hours — you share it. Not for credit. Because that's how all of us get better faster.
Stack18 Community exists because the best operators we know didn't get there alone. Someone made a warm intro. Someone shared a brutal lesson at 2 AM. Someone said "here's exactly what worked for us."
That's the energy we're building. Execution-first. No ego. All signal.
Four focused circles. Each with its own cadence, conversations, and way of helping each other grow. Join one. Or all of them.
For founders at every stage — from idea to scale. Peer groups, deal-flow sharing, co-founder intros, and the kind of brutally honest conversations you can't have anywhere else.
For engineers and product people building with AI, automation, and modern software. Open source, open questions, and collaborative problem-solving at the edges of what's possible.
Growth, finance, sales, and ops leaders who run the engines inside fast-moving companies. Playbooks shared, mistakes owned, wins celebrated — in a room without outsiders.
A cross-functional circle for anyone obsessed with where intelligence and automation are taking us. Research, demos, debates, and building live experiments — together.
Live product showcases from Stack18 portfolio companies and community builders. Open to all members. Real demos, real feedback, zero fluff.
Small, curated sessions (10–15 people) around a single topic — hiring, pricing, GTM, AI adoption. Peer-led, no vendor pitches, Chatham House rules.
48-hour build sprints where community members form teams, pick a problem from the real world, and ship something. Top teams get resources and mentorship from Stack18 Labs.
Hands-on technical and strategic workshops led by practitioners. Recent topics: deploying AI agents, building with MCP, SaaS pricing architecture, and agentic workflows.
Intimate conversations with founders and operators who've been through it — the hard chapters, the pivots, the wins. Format: one guest, one hour, no slides.
A curated, off-the-grid gathering for 30–40 founders. No agenda decks. Deep conversations about the real work, the hard trade-offs, and what comes next. By invitation only.
Arjun joined Stack18 community at our first ever Build Sprint and hasn't stopped showing up since. He's the kind of person who arrives early, stays late, and sends the follow-up email no one asked for. His team at NeuralOps shipped three open-source tools that over 200 community members now use in production.
Arjun represents exactly what Stack18 Community is meant to be. He's not here to network — he's here to build, to teach, and to learn. When we ran our first Playbook Roundtable on AI agents, Arjun facilitated the whole thing. No slides. Just two hours of the most useful conversation our members had ever had. That's the spirit that drives everything we do.
Stack18 Community saved us at least a year of bad decisions. One conversation at a roundtable changed how we structured our entire AI operations stack. The ROI on being part of this is incalculable.
I came to the first Demo Day not knowing what to expect. I left with three collaborations, a technical co-founder lead, and more clarity on our product direction than six months of solo thinking had given me.
Every community claims to be different. Stack18 actually is. No pitching, no posturing — just people who build things and want to see others succeed. That's extraordinarily rare and worth protecting.
Whether you're a first-time founder or a seasoned operator — if you believe in building great things and sharing what you learn, you belong here.
Membership is free. The only currency here is contribution.
Tell us what you build and we'll match you to the right group.
That's all we ask. Everything else takes care of itself.
We review applications weekly. Expect a response within 5 business days.
Drop us a line and a real person from Stack18 will get back to you within one business day — no bots, no auto-replies.
Reaching out from: Community