Johann M
Founding Engineer at Contrario (YC W25)
Medellín, Antioquia, Peru
Summary
👤
Senior🎓
Top SchoolJohann M is a founding engineer with 8+ years building full-stack, high-performance systems across fintech, logistics, government and education, currently shaping product and engineering at a YC-backed startup. He specializes in Node.js and TypeScript backends and React/Vue frontends, with deep experience in architecting fault-tolerant APIs, complex business logic, and performant geospatial tooling. Comfortable shipping quickly in agile, distributed teams, he has led multi-country invoicing systems, real-time GIS editors handling 100K+ points, and resilient Kafka-based workflows. A pragmatic mentor and continuous learner, he pairs strong test discipline and design-system work with hands-on delivery. Based in Medellín and an avid motorcycle rider and movies fan, he brings startup grit and cross-cultural remote experience to scale early-stage products.
8 years of coding experience
8 years of employment as a software developer
Computer Science, Computer Science at Pontificia Universidad Católica del Perú
English, Spanish
Github Skills (109)
social-authentication10
couchdb10
tplink10
serilog10
homekit10
homebridge10
logger10
google-recaptcha10
string-metrics9
database9
material-design-lite9
testing9
authentication9
structured-logging9
fallback9
Programming languages (6)
Github contributions (5)
iojancode/vehicle-restrictions
Jan 2022 - Jan 2025
Contributions:46 pushes, 2 branches in 3 years
iojancode/botija
Sep 2017 - Nov 2019
Contributions:69 pushes, 7 branches in 2 years 2 months
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