Bjorn
Antonissen
✦ UI / UX Designer & Fullstack Developer
I design interfaces and build the systems behind them as a fullstack developer, so the products I work on stay consistent from pixel to backend.
My main focus is Lettermint, an email platform I co-founded, where we shape the future of transactional email.
FeaturedLettermint
A European platform for sending transactional emails, with reliable delivery and GDPR-compliant by design.
Rewards.Flights
Find and book the best award flights to redeem with your Flying Blue miles, to destinations anywhere in the world.
MuseoTrack
Discover museums across the Netherlands, track your visits and earn achievements with your Museumkaart.
FeaturedCardMapr
Discover restaurants, shops and hotels across the Netherlands that accept American Express, so you never miss out on rewards.
Timeybird
Effortless time tracking for Moneybird, right from your Mac menu bar, so you never miss a billable minute.