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Mar User

@maruser9

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Android Developer at Bank Rakyat Indonesia building POS payment software with NFC contactless card support.

Indonesia

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At Bank Rakyat Indonesia, I develop an Android POS/EDC payment application that brings multiple device SDKs together. I built NFC contactless payment support for Mastercard, GPN, and Visa, alongside tap and chip transactions.

At Bank Syariah Indonesia, I migrated the BSIMobile app from Java to Kotlin and built an API-driven dynamic UI. I also implemented digital KYC onboarding with Zoloz and Oracle Liveness SDKs, reaching a 97% first-pass success rate in UAT.

I created Blueprint, an open-source server-driven UI library for Jetpack Compose that decodes backend JSON into native screens and is published on Maven Central. I also built CineStream, a Kotlin and Jetpack Compose Android client with a TypeScript backend-for-frontend deployed on Vercel.

Experience

Work history, roles, and key accomplishments

Current

Android Developer

Current

PT Bank Rakyat Indonesia (Persero) Tbk

Oct 2025 - Present (1 year 1 month)

Develops an integrated Android POS/EDC payment application, including contactless payments and card reading modules across multiple vendor SDKs. Built in-house terminal authentication and ECR middleware.

Android Kotlin Java POS EDC NFC Contactless Payments MSR ICC PIC C Bluetooth USB SDK Middleware

Middle Programmer

PT Bank Syariah Indonesia Tbk

Aug 2023 - Oct 2025 (2 years 2 months)

Migrated the BSIMobile Android app from Java to Kotlin with MVP architecture, reducing boilerplate code by 25%. Implemented digital KYC onboarding and improved enterprise CRM performance.

Android Kotlin Java MVP KYC Liveness SDKs LoadRunner Dynatrace Spring Boot REST APIs

Associate Software Engineer

Axonect

Oct 2021 - Feb 2023 (1 year 4 months)

Android developer for client XL-Axiata, running unit tests and fixing release bugs. Angular front-end developer for client MediaBank, revamping designs and supporting deployments.

Android Angular Unit Testing DevOps

Android Developer

PT Kozii Emas Nusantara

Jul 2021 - Sep 2021 (2 months)

Built features for the company's first product using MVVM, Hilt/Dagger and data binding. Wrote unit and runtime tests in collaboration with backend and QA teams.

Android Kotlin MVVM Hilt Dagger Data Binding Unit Testing