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15–17 Oct 2027 Halle 9, Berlin

Ship/48 hackathon

48 hours, 300 builders and one rule: ship something real. Free to join, with €40,000 in prizes.

Apply to hack Join a monthly meetup

312 hackers have registered and 41 teams have formed so far.

  • 00Days
  • 00Hours
  • 00Min
  • 00Sec
  • TypeScript
  • Rust
  • Python
  • Postgres
  • WebGPU
  • LLM APIs
  • Raspberry Pi
  • Figma
  • Kotlin
  • Open data

From idea to demo in one weekend

No pitch decks, no slides. You bring the curiosity, we bring the food, the mentors and a room that never closes.

  1. 01

    Apply

    Solo or as a team of up to four. Applications close on 1 October; we confirm within a week.

  2. 02

    Team up

    Friday evening starts with a team-forming session, so nobody has to hack alone.

  3. 03

    Build

    48 hours with mentors on call, hot meals, sleep pods and very fast Wi-Fi.

  4. 04

    Demo

    Three minutes on stage on Sunday. Show what works; the judges read the code.

Four tracks

Pick one when you apply. Every track has its own challenge partner, mentors and €5,000 prize.

Track 1 · Northwind Labs

AI for good

Build an assistant that saves a public service real time: forms, translations, accessibility. Open models only.

€5,000 + cloud credits

Track 2 · Gridwise

Climate & energy

Use live grid and weather data to help households and city fleets charge when power is clean and cheap.

€5,000 + a pilot with Gridwise

Track 3 · Ledgerly

Money & fintech

Open banking APIs and a sandbox with 10,000 test accounts. Make money simpler for people who find it hard.

€5,000 + API partner access

Track 4 · Forkyard

Open-source tools

Ship a developer tool, library or plugin under an open licence. Bonus points for docs and tests.

€5,000 + a year of sponsorship

The 48 hours

Hour 0 of 48

48 hours to go

  1. Doors open & check-in

    Pick up your badge, a locker key and a coffee.

    Doors

  2. Kick-off and track briefings

    The four challenge partners explain their tracks on the main stage.

    Talk

  3. Team-forming session

    Pitch an idea in 30 seconds or join one. Teams of up to four.

    Workshop

  4. Hacking starts

    Dinner is served in the hall. The clock is running.

    Food

  5. Lightning talks: shipping fast

    Five talks, five minutes each, from last year’s winners.

    Talk

Prize pool

€40,000

Paid out within 30 days. Every team keeps 100% of its code and its IP.

  • Grand prize€10,000Plus a place in the Spree Ventures studio
  • Runner-up€5,000Plus a year of cloud credits
  • Four track prizes€20,000€5,000 for the best team in each track
  • Best first-time team€3,000Everyone on the team is new to hackathons
  • Community vote€2,000Chosen by everyone in the hall on Sunday

Mentors & judges

Engineers, designers and founders who have shipped at scale. They walk the floor all weekend.

Can’t wait? Meet up

Stackhouse meetups run on the third Thursday of every month in Kreuzberg: two talks, pizza and plenty of time to find a team.

#38

AI agents that actually ship

  • Evals before vibes – Dana Whitfield
  • Tool calls at 3 a.m. – Tomás Rivera
64 of 80 seats taken

#39

Rust in production

  • Rewriting a payment queue – Henrik Sandvik
  • WebAssembly at the edge – Tomás Rivera
31 of 60 seats taken

#40

Design systems for developers

  • Tokens, not opinions – Samir Haddad
  • Docs people actually read – Grace Adeyemi
12 of 80 seats taken

Shipped at SHIP/47

Last year’s winners. Three of them are companies now.

Tideline team at SHIP/47
Grand prizeTidelineFlood alerts from open satellite data
Crowdline team at SHIP/47
Community voteCrowdlineLive queue times for the whole hall
Pairbot team at SHIP/47
AI for goodPairbotA code reviewer that explains, not just flags
Pocketledger team at SHIP/47
Money & fintechPocketledgerShared budgets for flatmates, built on open banking
Sparkplug team at SHIP/47
Climate & energySparkplugCharges city e-bikes when the grid is greenest
Wireframe.fm team at SHIP/47
Best first-time teamWireframe.fmTurns whiteboard sketches into working forms
The empty main hall of Halle 9 with tall windows and concrete pillars

Halle 9

A former tram depot on the river, open around the clock for the whole weekend.

  • Spreeufer 9, 10997 BerlinFour minutes from U1 Schlesisches Tor
  • Sleep pods and showersQuiet room upstairs, lockers for every team
  • 10 Gbit/s fibre600 power sockets and a hardware lab
  • Step-free accessLift to every floor, accessible toilets

Made possible by

Questions, answered

Anything else? The organisers answer on the Stackhouse Discord every weekday.

Ask the team

No. About a third of the hackers arrive alone. The team-forming session on Friday evening helps you find people whose skills fit yours.

Yes. Entry, meals, drinks, a sleep pod and the T-shirt are paid for by the partners. You only pay for your trip to Berlin, and we have travel grants for 40 people.

You do. Every team keeps 100% of its code and IP. Challenge partners may offer a pilot or a licence afterwards, but only if you want one.

Please do. One prize is only for first-time teams, and mentors run a short “first hackathon” briefing on Friday.

A laptop, its charger, a refillable bottle and something warm to sleep in. Hardware hackers can borrow kits from the lab.

Hackers must be 18 or older on 15 October 2027. Younger builders are welcome at the monthly meetups with a parent or teacher.

Apply to hack

Free for every builder. Applications close on 1 October 2027.

npx ship48 apply

Prefer the terminal? The same form, in your shell.