Alejandro Mezcua
Owner at 128 Characters Software
Madrid, Community of Madrid, Spain
Summary
👤
Senior🎓
Top SchoolAlejandro Mezcua is a seasoned mobile and web software engineer with 13 years of experience, currently owning and consulting through 128 Characters Software from Madrid. He has led Android teams and shipped platform SDKs across languages (Java, Kotlin, Rust, Swift, TypeScript) for companies including BeReal, Proton, Proxy and Xapo, blending hands-on engineering with architecture and product-focused leadership. As a serial founder and early technical lead, he’s built end-to-end platforms, driving system design, APIs and client SDKs that scale across devices. Alejandro pairs practical engineering with an independent streak—he’s an avid scuba diver and craft beer maker—bringing curiosity and craft to both code and hobbies. With a background in physics (UAM) and a long freelance history, he’s comfortable translating complex requirements into robust mobile-first solutions.
13 years of coding experience
28 years of employment as a software developer
Physics, Physics at UAM
Spanish, English
Stackoverflow
1,211reputation
179kreached
31answers
0questions
Github Skills (23)
authentication9
jwt9
exoplayer8
elixir8
kotlin7
player7
java7
android7
media-player7
jetpack-compose7
extensible6
windows-mobile6
sdk6
soa6
amplitude6
Programming languages (4)
Github contributions (5)
amezcua/Beak
Oct 2015 - Nov 2015
Contributions:24 commits, 11 pushes, 2 branches in 24 days
amezcua/PreludeTest
Oct 2024 - Dec 2024
throw away repo for testing
Contributions:1 release, 27 PRs, 2 pushes in 1 month
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.