Jefry Jacky
Senior Android Engineer at Ajaib
Special capital Region of Jakarta, Indonesia
Summary
👤
Senior🎓
Top SchoolJefry Jacky is a Senior Android Engineer with 9 years of hands-on experience building high-performance mobile apps and leading small teams across fintech and consumer startups in Jakarta. He’s certified in Android and proficient in Kotlin, Java, and Spring, with a Master’s in Computer Science from BINUS and a track record of migrating large codebases, cutting build times by 80%, and shrinking APK size by 60%. At Akseleran he drove modularization, CI/CD, dynamic feature delivery, and Baseline Profiles to keep crash rates above 99% free while coaching engineers on OKRs and best practices. He also has deep experience in real-time and secure messaging from earlier work on XMPP-based chat and encrypted communication apps. Motivated to ship useful, high-quality applications, he blends pragmatic architecture, testing, and developer ergonomics to accelerate delivery and reduce operational friction.
9 years of coding experience
11 years of employment as a software developer
Master's degree, Computer Science, 3.58, Master's degree, Computer Science, 3.58 at Universitas Bina Nusantara (Binus)
English, Chinese, Indonesian
Stackoverflow
799reputation
89kreached
9answers
2questions
Github Skills (53)
xmpp10
pdf-document10
travis10
logger10
travis-ci10
java10
logcat10
android10
android-view10
logging10
pdfium10
timber10
messaging9
brokers9
stun9
Programming languages (5)
Github contributions (5)
jefryjacky/SmartLog
Jul 2019 - Jun 2021
Contributions:1 release, 43 pushes, 1 branch in 1 year 10 months
jefryjacky/jefryjacky.github.io
May 2018 - Feb 2025
Contributions:81 pushes, 1 branch in 6 years 10 months
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