Bjorn Antonissen
Co-founder at Lettermint
Zwolle, Overijssel, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolBjorn Antonissen is a Netherlands-based co-founder, UI/UX designer and full-stack developer with 11 years of experience building digital products from concept to market. As founder of CardMapr, Rewards.Flights and YTCount and operator of BjornAntonissen.nl, he combines visual design and engineering to deliver custom websites, apps (iOS/MacOS/tvOS) and growth-focused marketing. He handles everything from identity and prototyping to development and launch, giving founders a single point of ownership across the product lifecycle. Recently he also co-founded Lettermint to improve EU transactional email deliverability, showing a shift into infrastructure-facing product work alongside consumer tools. Known for turning personal needs into scalable services, he brings an entrepreneurial mindset and hands-on craft to every project.
11 years of coding experience
6 years of employment as a software developer
Interactieve Media Vormgeving, Interactieve Media Vormgeving at Deltion College
Dutch, English, German
Github Skills (141)
logos10
semantic-search10
fast-search10
svg10
spider10
branding10
opengraph10
instantsearch10
iconic10
markdown10
fuzzy-search10
javascript10
twitter10
seo10
app-search10
Programming languages (10)
Github contributions (5)
Bjornftw/bjornftw
Apr 2021 - Mar 2025
Contributions:9 pushes, 1 branch in 3 years 11 months
Bjornftw/vanmoof-encryption-key-exporter
Jul 2023 - Dec 2023
Export all bike details (such as encryption key) of your VanMoof bikes.
Contributions:2 pushes, 1 branch in 5 months
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