Qara'a

 Playstore of Qara'a

My Role :
Backend & Web Developer  & Co-Founder

Tech Stack & Responsibilities :
Build REST API, Build Web App Admin Panel, Laravel, Vue JS 2 & 3, Bootstrap CSS, Tailwind CSS, MariaDB, PHP 7.xx, Virtual Private Server, Task Scheduler/Cron, GitLab, GitHub, OneSignal(Push Notification), OAuth, Redis, Payment Gateway, Electronic Payment, Next.js.

As a Back-End & Web Developer and Co-Founder of QARA’A, I played a pivotal role in designing and optimizing the platform’s technical architecture. Through strategic backend development, the app successfully scaled to 1M+ installs 📈 and maintained 10,000+ daily active users 👥.

Key Contributions:

• ⚡ Performance Optimization: Enhanced database efficiency by 20% through optimized queries and a robust caching system (Redis).

• 🚀 Speed Enhancements: Improved app startup time by 15% and reduced page load times by 30% on the Single Page Application (Vue.js).

• 🔗 API Development: Led the development of RESTful Web Services for seamless integration across web, Android, and iOS platforms.

• 🛠️ Infrastructure & Code Management: Spearheaded Laravel-based backend development, implemented GitLab for version control, and ensured scalable architecture.

• 📊 Business & Growth Strategy: Contributed to discussions on user engagement, install growth, revenue optimization, and conversion strategies.

By leveraging cutting-edge technologies and efficient development strategies, I helped shape a high-performance system that continues to grow and engage a global user base.

Additional Contributions:

• 💳 Payment Integration: Refactored and streamlined integration with multiple payment gateways, including Midtrans and Xendit to improve reliability and flexibility of the transaction flow.

• 🤝 Third-Party Collaboration: Successfully integrated QARA’A with the Durioo+ Kids App, enabling synchronized access and shared subscription benefits between platforms. Web-view based.

• 🌐 Microsite Engineering: Led the development of a Next.js microsite with a mobile-first, app-like UI enforced across all devices, bringing core QARA’A features to the web while maximizing performance and engagement.

• 🛠️ Admin Panel Development: Contributed to multiple iterations of admin dashboards using Vue.js (2 & 3) and TypeScript, showcasing adaptability across evolving front-end stacks. Integrated diverse data visualizations : line, pie, bar, and multi-series charts transitioning from Chart.js to ApexCharts to improve performance, interactivity, and maintainability. 

• 🔒 LinkAja Donation Integration: Contributed to implementing secure LinkAja-based donation and recurring payment flows in QARA’A, working with encrypted headers, custom signature schemes, and strict request formatting to meet API security standards. 

• 🕒 Scheduled Task Automation: Designed and implemented Laravel scheduler commands to automate key backend operations for the QARA’A app 

Contributed to this project as part of my role at Qara'a.
Jan 2020 - Present