Explore how ideas become ventures.
Investigate customers, products, selling, pitching and the decisions behind building a company.
Here's exactly what happens in a SydeDoor edition: what you do, who you learn from, and what you walk away with.
Pick your track (14–18 or 18–22) and your city. Founding members hear first.
When dates are set, you confirm your place. Under-18s need a parent or guardian to give consent.
You're placed in a team of 4–5 people from your track, mixed by school, area and skill.
48 hours before kick-off, you find out which startup is setting your brief.
Each week is led by a different person from the host company, so you see the problem from a different seat every time.
The founder explains the company, the market, and a real problem they're facing right now. Then it's yours.
Watch how the product team actually works, on screen. Then build a working prototype of your solution.
Learn how a growth team finds out what works. Put your prototype in front of real people and measure it.
A 48-hour sprint to polish everything, then a live pitch to the founder and a guest panel. Prizes awarded on merit.
Across four weeks you diagnose, prototype, test and pitch. These five perspectives help you explore different kinds of work within the same brief. You don't pick one for good: you try them on. Each edition's focus depends on its host.
Investigate customers, products, selling, pitching and the decisions behind building a company.
Map markets, assess value and risk, research companies and defend a reasoned view.
Work with AI, software and automation to understand and solve technical problems.
Practise media, design, storytelling, audiences and distribution across real channels.
Investigate communities, institutions and policy, then test an idea for impact.
Sessions are planned for 12–1pm or 5–7pm, GMT and CET, so they fit around school, university or work. The longer evening slot gives teams more sprint time.
What this person's job really involves, what's hard about it, and what nobody tells you.
Real work happening in real tools. You see exactly how they use AI day to day.
This week's task, straight from the company's real backlog.
Breakout rooms with your team. Build, argue, decide. The SydeDoor team rotates through to help.
Teams share what they've got. The expert gives honest, specific feedback, live.
What to finish before next Wednesday. Then you're off.
You work together on your own schedule, in a private team space. The SydeDoor team checks in, answers questions and unblocks you.
The rubric is published before the sprint starts, so everyone knows exactly how they'll be scored.
We lean towards opportunities over cash. The kind of thing you can't buy, and that changes what happens next.
A week inside the host startup, working alongside the team.
An invitation to the SydeDoor Fellowship, our selective long-form programme.
A seat at the table with the people building what's next.
Every session runs live online, so you can join from anywhere. In-person editions add the moments that are better in a room.
Join the waitlist to become a founding member. You'll hear first about dates, hosts and places, and help shape what we build.
Join the waitlist →Takes two minutes. Under 18? We'll ask a parent or guardian to confirm before you take part.