A community for technical leaders to connect, share, and grow.
CTO Circle is a curated community for CTOs and senior engineering leaders. Real conversations, peers who get it, dinners that turn into friendships.
Joined by 2k+ CTOs and engineering leaders worldwide.
Members & engineering leaders from
Four things you get the day you join.
Membership is free. Applications are reviewed by a human.
A Slack you'll actually read
No noise, no 1,000-unread inbox. A few curated channels for hiring, architecture, comp and board prep, plus weekly 1:1 peer matching.
Anyone migrated from pgvector to a hosted vector DB recently?
Did this last quarter — pgvector still won. Happy to jump on a call.
Same boat. DM sent.
Dinners and meetups, in person
Curated evenings in Madrid, Barcelona and San Francisco.
A weekly read for engineering leaders
Every Wednesday: trends, hiring moves, and stories CTOs talk about.
Discounts on tools your team uses
A growing list of perks negotiated for members only.
In their own words.
“I attended the event in Madrid at Playtomic's offices: the atmosphere was fantastic, surrounded by top company leaders. I remember debating a particular architecture and sketching ideas on the whiteboard. Afterwards, we went out for beers. There are very few events like this.”
Carlos Karus
CTO at AWS EMEA
“I joined the first event in Barcelona and gave a short talk about what it means to be a great engineer in the age of AI. I met amazing people and we went out for dinner together afterwards. I'll definitely be back for the next one.”
Santiago H.
CTO at EdPuzzle
“Even though I've been living in Barcelona for a while, I met CTOs and other tech leaders I had never connected with before. It led to truly insightful and valuable conversations.”
Ezequiel Cura
Founder Desplega.ai · ex-VP Eng. Capchase
Upcoming calendar.
Live view of the next confirmed CTO Circle events. Hosted in Madrid, Barcelona, and San Francisco.
A look back.
CTO Networking San Francisco
Networking event for CTOs and engineering leaders in SF.
CTO Networking Barcelona
Cervezas, tapas y opiniones — edición Barcelona.
CTO Networking Madrid
Cervezas, tapas y opiniones — edición Madrid.
CTO Networking Madrid
An evening of leadership stories, hot takes, and connections.
A respectful, inclusive environment.
The standards we hold each other to.
Respect & Professionalism
Treat all members with respect, regardless of background, experience level, or company size.
Confidentiality
Respect the confidential nature of discussions. Nothing inside the room leaves the room.
Constructive Engagement
Contribute meaningfully. Provide constructive feedback and support to peers.
No Self-Promotion
Focus on community value rather than promoting personal or company interests.
Join the room where your peers are.
Free to join. Every application is reviewed by a human — usually within five business days.
No fee, ever. We just want to make sure the room stays worth your time.
Built for: CTOs, VPs of Engineering, and founding engineers at real product companies.
Not for: recruiters, vendors, or “AI consultants.”