PORTFOLIO SHOWCASE

Engineering Work & Case Studies

In-depth technical breakdown of production systems, cross-platform mobile architectures, automated digital platforms, and system tools built from the ground up.

ACTIVE PRODUCTION Personal Production Platform (2026)

NEBU

Role: Product Engineer / Full-stack Developer

NEBU is an independent, high-performance digital top-up platform engineered from scratch for automated transaction fulfillment, resilient payment webhooks, and sub-second API execution.

Technical Stack Architecture

Language & Framework

Go (Golang), Svelte

Database & Queue

MySQL, Redis Queue & Caching

Deployment & Infra

Docker, Nginx Reverse Proxy, Cloudflare

API & Webhooks

Midtrans Gateway, Digiflazz H2H Engine

Telemetry & Logs

Grafana, Loki, Promtail

Key Engineering Accomplishments

Ultra-fast REST API microservices engineered in Go for high throughput

Asynchronous transaction worker queue using Redis to process top-ups instantly

Seamless integration with Midtrans payment webhooks and automated status reconciliation

Hardened Linux VPS deployment containerized with Docker and protected by Cloudflare WAF

Real-time operational observability with Grafana dashboard telemetry

Visit Live Platform

NEBU MOCKUP

FLAGSHIP ECOSYSTEM Flagship Enterprise Platform (2025 - 2026)

EDUNUSA Ecosystem & CBT Engine

Role: Lead Mobile Architect

A unified cross-platform mobile suite combining interactive online learning, offline-first data sync, and a high-security Computer-Based Test (CBT) lockdown engine for tamper-proof institutional exams.

Technical Stack Architecture

Core Architecture

Kotlin Multiplatform (KMP), Compose Multiplatform, Swift

State & Lifecycle

Decompose, Reactive StateFlow, Clean Architecture

Database & Engine

Room DB (Encrypted Cache), Ktor HTTP Engine

Security & Anti-Cheat

Hardware Secure Enclave, Kiosk Mode Lockdown

Key Engineering Accomplishments

Single shared Kotlin codebase powering 85%+ UI and business logic across iOS & Android

Tamper-proof CBT exam lockdown backed by hardware secure enclave APIs

Zero-latency exam response logging with instant offline state preservation during disconnections

Modular multi-module architecture with Decompose lifecycle-aware navigation trees

Optimized split-pane exam UI tailored for tablets and iOS/Android phone viewports

EDUNUSA Ecosystem & CBT Engine MOCKUP

BANGKIT CAPSTONE Bangkit Academy Capstone (2024)

Moove

Role: Android Lead Developer

Smart vacation planning mobile application that automatically computes optimal travel routes, budget forecasts, and attraction schedules using real-time geospatial calculations.

Technical Stack Architecture

Language & Framework

Kotlin Native, Jetpack Compose

Architecture

MVVM, Kotlin Coroutines & Flow

APIs & Services

Retrofit HTTP, Google Maps SDK, Location API

Key Engineering Accomplishments

Developed as a core Capstone Project among 4,000+ Bangkit cohort participants

Interactive Google Maps SDK integration featuring custom route overlays and destination waypoints

Automated budget distribution algorithms with daily itinerary timeline views

Reactive MVVM architecture with clean layer separation and reactive Coroutine Flows

Moove MOCKUP

PKM-PI FUNDED & AWARD WINNER PKM-PI Funded & Award-Winning Agrotech Innovation (2024)

FireGuard

Role: Mobile & Systems Developer

Real-time IoT telemetry and early warning system funded by Kemendikbudristek (PKM-PI). Connects custom sensor nodes with OpenWeatherMap APIs to detect wildfire anomalies and trigger emergency push notifications.

Technical Stack Architecture

Mobile & Telemetry

Kotlin, Telemetry REST API

Cloud & Alerts

Sensor Telemetry Services, OpenWeatherMap API, FCM Push

Key Engineering Accomplishments

Funded under Kemendikbudristek Program Kreativitas Mahasiswa - Penerapan IPTEK (PKM-PI)

Awarded 3rd Runner Up (Juara Harapan 3) at PIMTANAS National Student Science Fair

Awarded 1st Runner Up (Juara Harapan 1) at PKP2 PTMA National Progress Evaluation

Real-time sensor telemetry processing with dynamic threshold alert triggers

Interactive geospatial risk map visualizing temperature, humidity, and fire danger zones

Emergency dispatch notification system powered by high-priority push messaging

FireGuard MOCKUP

Have a System or Mobile App to Architect?

Available for Kotlin Multiplatform engineering, Go microservice architecture, and technical consulting.

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