Experience

Architected end-to-end systems for enterprise platforms handling millions of daily requests — spanning server provisioning, CI/CD, high throughput APIs, frontend interfaces, and AI integrations using LLMs and Retrieval Augmented Generation (RAG).

• Built and scaled the backend for an internal enterprise field operations app serving a nationwide FMCG distributor, sustaining millions of daily requests with stable response times and providing consolidated visibility over tens of thousands of stores
• Engineered nightly cron pipelines and asynchronous SMTP export jobs to synchronize tens of thousands of records with internal systems, eliminating manual reconciliation and removing blocking exports
• Designed a webhook routing middleware where partner apps register as OAuth2 authenticated listeners, sustaining tens of thousands of integration calls and guaranteeing zero data loss through automatic retries
• Delivered a voucher distribution campaign dispatching 50,000 unique codes through the official WhatsApp Business API, utilizing pessimistic locking and explicit transactions to guarantee zero double redemption under concurrent load
• Built a payment disbursement service on Midtrans Iris for a product launch guarantee program, enforcing one claim per verified phone with row locking, explicit transactions, and request throttling to block fraud and spam
• Integrated LLMs to power an automated content generator, streamlining content creation and reducing manual overhead
• Engineered a RAG chatbot with persistent vector memory, enabling continuous learning without redundant reprocessing
• Streamlined delivery by provisioning self-hosted GitLab runners and wiring Dokploy staging previews into GitLab CI/CD, automating deployments without manual steps

• Django
• Laravel
• PHP
• Python
• MySQL
• PostgreSQL
• Docker
• Redis
• GitLab CI/CD
• Dokploy
• OAuth2
• Midtrans
• WhatsApp API
• New Relic
• Linux

Supported the internal team maintaining a CRM for vehicle spare parts — fixing REST API bugs, optimizing queries, and ensuring stable data flow across services.

• Debugged and resolved critical logic issues across controllers and query layers, improving API response accuracy and reducing error rates for the core CRM
• Identified query bottlenecks on Microsoft SQL Server and applied advanced indexing and query restructuring, drastically improving data retrieval times
• Enforced consistent controller logic and data-handling patterns to ensure zero data anomalies during high-volume transactions

• Laravel
• Microsoft SQL Server
• GitLab
• Git

Delivered backend systems powering education, F&B, and enterprise platforms — from architecture design to production deployment.

• Architected and deployed the backend and CMS for an Islamic boarding school management app, handling digital SPP payments and student progress tracking
• Engineered a POS and ordering system for a restaurant with real-time order sync, payment gateways, and delivery tracking
• Built a multi-feature enterprise platform (polling, loyalty programs, broadcast) powered by Laravel, Redis caching, and MySQL

• Laravel
• PHP
• MySQL
• Redis
• GitLab
• Git
• Firebase

Maintained and extended a full-stack system for a government health center (puskesmas) — building new modules, CMS dashboards, and performance-optimized features for internal operations.

• Engineered new modules for patient data management, transforming paper-based records into a structured, searchable digital workflow
• Developed administrative dashboards giving staff visibility and control over operational data and scheduling
• Optimized database queries for data-heavy views, reducing page load times for internal staff

• CodeIgniter
• PHP
• MySQL
• GitLab
• Git