Daniel Verhoef
Principal engineer, Marlin Freight
Opening keynote: Ten years of one codebase
Design and engineering, three days
OffsetRotterdam 2027
Three days on building what lasts. Twenty-four practitioners, one hall, no filler talks.
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Speakers
People who ship
Nine of the twenty-four, announced so far. Every talk comes from something they built and kept running.
Amara Okafor
Design director, Tidewell
Type systems that survive a rebrand
Lucas Berg
Staff engineer, Nordlys
Deleting the design system
Priya Sharma
Head of research, Quarry
What 400 interviews taught us about forms
Jonas Keller
Founder, Halvorsen
Small teams, long horizons
Marit de Vries
Accessibility lead, Lumen
The audit nobody wanted
Elias Nkemelu
Motion designer, Ostra
Easing curves, honestly
Sofia Castro
CTO, Aldeia
Boring technology, bold products
Tomas Wren
Illustrator and engineer
Drawing with code, live
Schedule
Three days, one stage
Talks run in the main hall from 09:30. Workshops and the quiet room run alongside.
- Ten years of one codebaseDaniel VerhoefMain hall
- Type systems that survive a rebrandAmara OkaforMain hall
- Workshop: Build a token pipeline in a morningLucas BergStudio B
- Deleting the design systemLucas BergMain hall
- Opening reception on the quayDrinks and food, includedMaashaven
- What 400 interviews taught us about formsPriya SharmaMain hall
- The audit nobody wantedMarit de VriesMain hall
- Workshop: Accessible motion, from easing to reduced motionElias NkemeluStudio B
- Boring technology, bold productsSofia CastroMain hall
- Panel: What we would not build againFive speakers, one moderatorMain hall
- Small teams, long horizonsJonas KellerMain hall
- Easing curves, honestlyElias NkemeluMain hall
- Drawing with code, liveTomas WrenMain hall
- Lightning talks, ten minutes eachChosen from the open callMain hall
- Closing: What lastsAll speakersMain hall
Venue
Kaaihal, on the water
A converted harbour warehouse with a 1,400 seat hall, a quiet room, and a long room for lunch. Ten minutes from Rotterdam Centraal by water taxi, or twenty on foot.
- 1,400seats, no bad ones
- 3rooms, one shared schedule
- Step-freethroughout, with a quiet room
- Live captionsin every talk
Tickets
Pick your seat
All prices in euros, VAT included. Every ticket covers all three days, lunch and the reception.
Student
€249
Valid student ID at the door.
- Three days, main hall
- Lunch and reception
- Recordings after the event
Most chosen
Standard
€690
The full three days.
- Three days, all rooms
- Workshops, first pick
- Lunch, reception, speaker dinner draw
- Recordings and slides
Team of five
€2,900
Save €550 against five Standard.
- Five Standard tickets
- Reserved table at lunch
- One private hour with a speaker
FAQ
Before you book
Can I get a refund?
Yes, in full until March 1, 2027. After that you can transfer your ticket to a colleague for free, any time up to the day.
Will the talks be recorded?
Every main hall talk is recorded and captioned. Ticket holders get the recordings within two weeks, and everyone gets them free after three months.
Is the venue accessible?
The hall is step-free from the quay to the stage. There is a quiet room with dimmed light, live captions in every talk, and a named person on the door for anything else you need.
Where should I stay?
We hold blocks at three hotels within fifteen minutes of Kaaihal. The booking codes arrive with your ticket, and the water taxi runs until midnight.
Do you accept talk submissions?
The open call for lightning talks closes on February 1, 2027. Ten minutes, one idea, one thing you built that lasted.