xsalefter
Web Developer
Indonesia
Summary
🤩
Rockstarxsalefter is a seasoned web developer with 15 years of professional experience, currently working full-time as a freelancer on Upwork from Indonesia. He brings strong back-end skills demonstrated by contributions to the well-known Kill Bill open-source billing platform, where he fixed pricing and overdue-system bugs and added testing utilities and currency checks. Comfortable shipping production-grade financial software, he focuses on reliability and correctness in payment and subscription logic. As a pragmatic problem-solver, he pairs long-term maintenance thinking with hands-on debugging and test-driven improvements. His sustained freelance practice indicates adaptability across projects and clients while maintaining deep technical ownership.
15 years of coding experience
Stackoverflow
640reputation
147kreached
18answers
2questions
Github Skills (22)
catalog10
java10
javas10
payment-processing10
management10
testing9
junit-test9
financial9
calc9
testng9
finance9
junit9
calculation9
unit-test9
pycharm6
Programming languages (9)
Github contributions (5)
killbill/killbill
Dec 2021 - Nov 2022
Open-Source Subscription Billing & Payments Platform
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 releases, 59 reviews, 225 commits in 11 months
Contributions summary:Xsalefter primarily worked on the Kill Bill platform, focusing on subscription billing and payments. Their contributions involved debugging and fixing pricing issues, adding builder methods for testing, and implementing checks for supported currencies in the catalog. The user also addressed a bug in the overdue system, contributing to the platform's financial management functionality.
paymentsecommercein-app-purchasesubscriptionsstorekit
xsalefter/killbill-oss-parent
Jun 2022 - Jul 2023
Kill Bill parent pom.xml
Contributions:11 PRs, 20 pushes, 66 branches in 1 year
paymentspom-xmlparent-pomxmlpom
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