Javi聽Santos
Freelance Software Engineer at Stealth Startup
Barcelona, Catalonia, Spain
Summary
馃懁
Senior馃帗
Top SchoolJavi Santos is a seasoned tech lead and entrepreneur based in Barcelona with nearly two decades of hands-on engineering and nine years in senior product and leadership roles, known for turning ambitious ideas into production systems across blockchain, telecom, and fintech. He co-founded and scaled World Mobile Group鈥檚 engineering org, architecting an MVNO platform that fused crypto wallets, WebRTC/SIP, and a custom node network, and later built an AI-powered financial reporting engine aggregating data from 600+ institutions. Comfortable moving between code and strategy, he combines deep systems design with hiring, roadmap definition, and KPI-driven delivery for distributed teams. His background includes building large-scale video monetization platforms, self-sovereign identity cryptographic libraries, and a string of startup CTO roles鈥攅vidence of repeated product-to-market execution. Outside core engineering he鈥檚 run community-driven initiatives at scale, from dance festivals to global remote teams, highlighting a knack for people-first leadership and operational rigor.
9 years of coding experience
15 years of employment as a software developer
Arte electr贸nico y dise帽o digital, Arte electr贸nico y dise帽o digital at ESDiProject Manager, Project Manager at La Salle BCN
Github Skills (58)
append8
design-tokens7
figma-plugin7
react7
zenroom6
decrypt6
logging6
encapsulation6
bob6
component-library6
sdk6
typescript6
vscode-extension6
bug-tracker6
shopify6
Programming languages (5)
Github contributions (5)
javisantos/faythe
May 2020 - Jun 2021
An easy crypto library to send messages using key encapsulation. A courier for Alice and Bob.
Contributions:15 releases, 16 PRs, 53 pushes in 1 year
crypto-librarycryptographysend-messagesencapsulationcourier
javisantos/append-only-object
Jun 2020 - Mar 2025
A way to `append only` objects (deltas) to objects
Contributions:1 PR, 7 pushes, 1 branch in 4 years 9 months
append-onlyappenddeltas
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