Rakha Kautsar
Software Engineer at Hopper
Singapore, Singapore
Summary
👤
Senior🎓
Top SchoolRakha Kautsar is a frontend software engineer with 11 years of experience optimizing web and mobile performance and shipping measurable UX improvements at scale. Based in Singapore, he has driven major wins at TikTok and Shopee—cutting load times by seconds, slashing build and CI times, reducing server latency dramatically, and trimming app bundle sizes to improve user engagement. Now at Hopper, he continues to focus on performance-first engineering, profiling memory, implementing caching/prefetching, and building reusable performance libraries. An active contributor to notable open-source efforts like the You-Dont-Need-Momentjs repo, he brings a pragmatic testing and QA mindset to ensure correctness and speed. He combines hands-on implementation with cross-functional collaboration with designers and backend teams, and has a history of turning performance problems into product differentiators.
11 years of coding experience
5 years of employment as a software developer
Bachelor's degree Computer Science, Bachelor's degree Computer Science at University of Indonesia
Indonesian, English
Stackoverflow
79reputation
7kreached
2answers
0questions
Github Skills (6)
javascript10
testing10
date-fns9
dayjs9
unit-testing9
react6
Programming languages (11)
Github contributions (5)
you-dont-need/You-Dont-Need-Momentjs
Oct 2018 - Oct 2018
List of functions which you can use to replace moment.js + ESLint Plugin
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:6 commits, 1 PR, 4 comments in 2 days
Contributions summary:Rakha contributed to the project by writing and modifying tests. The commit messages and code changes focus on adding tests for date manipulation functions and native implementation. The changes included modifying the end of time test case for the native implementation and adding performance testing. The user appears to be working on ensuring the correctness and performance of the date manipulation library.
bundle-sizetree-shakingdate-fnsmomentjstimeago
rkkautsar/google-api-nodejs-client
Mar 2017 - Jul 2024
Google's officially supported Node.js client library for accessing Google APIs, it comes with OAuth 2.0 support.
Contributions:4 PRs, 15 pushes, 17 branches in 7 years 5 months
js-clientgoogle-apioauth-2googleclient-library
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