Javier Rosas
Chief Technology Officer at FacturAPI
Stockholm County, Sweden
Summary
👤
Senior🎓
Top SchoolJavier Rosas is a CTO and entrepreneur with 13 years of hands-on software engineering experience, currently leading technology at FacturAPI from Stockholm. He blends full-stack JavaScript expertise with a proven mobile and embedded background—shipping React/React Native products, iOS apps, and even synchronized cloud tools for music collaboration. His tenure includes building web-based DAW features at Spotify’s Soundtrap and scalable microservices work at Klarna, showing comfort across frontend, backend and distributed systems. Javier co-founded a music-tech startup and has a persistent interest in music and product-led growth, which informs his user-focused engineering decisions. Known for pragmatic performance improvements (e.g., drastic iOS app load and memory optimizations) he pairs entrepreneurial instinct with measurable technical impact.
13 years of coding experience
10 years of employment as a software developer
Mechatronics Engineer Mechatronics Robotics and Automation Engineering, Mechatronics Engineer Mechatronics Robotics and Automation Engineering at Instituto Tecnológico de Hermosillo
English, Spanish
Stackoverflow
759reputation
66kreached
14answers
17questions
Github Skills (200)
openapi10
client-library10
cil10
api10
nodejs10
mongodb10
invoice10
factura10
odm10
recycle9
queue9
testing9
google-cloud9
react-native9
ios9
Programming languages (11)
Github contributions (5)
javorosas/react-native-rest-client
Nov 2016 - Jun 2018
REST calls in React Native made simple
Contributions:18 commits, 3 PRs, 13 pushes in 1 year 7 months
reactcallsreact-nativerest-clientrest
FacturAPI/facturapi-net
Jun 2017 - Feb 2022
Crea facturas electrónicas selladas y timbradas, válidas en México (CFDI)
Contributions:14 reviews, 72 commits, 23 PRs in 4 years 8 months
cfdi-mexicofacturacioncreafacturafacturacion-electronica
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