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Danda User

@dandauser

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Android systems engineer maintaining custom ROMs and kernels used by a community of 4,500+ users.

Indonesia

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I maintain and port custom Android ROMs across multiple devices, supporting Android 11–16. I debug bootloops, crashes, and user-reported bugs, and automate ROM porting and patching with shell scripts.

For SM8250 devices, I developed and maintain Oxygen+, a custom kernel focused on stability, battery backup, and performance. I adapted a CodeLinaro-based kernel tree, merged Linux 4.19.y and CLO tags, and ported OEM drivers for ROM compatibility.

I also built open-source tools including RomTools, a menu-based CLI for manipulating Android partitions, and RapidFlasher, an Android ROM flasher and installer. My work has reached a community of 4,500+ users, and I maintain a public ROM/kernel website with flashing instructions.

Experience

Work history, roles, and key accomplishments

Current

Developer

Current

#OOFGang

Jan 2024 - Present (2 years 9 months)

Implemented file-based Play Integrity Fix, app-specific properties spoof, and auto-patching shell scripts for framework implementation. Managed auto porting and fixing scripts and fixes on GitHub.

Shell Scripting Play Integrity Fix GitHub Automation

Current

Freelancer as Custom Kernel Developer

Current

Self Employed

Jan 2023 - Present (3 years 9 months)

Developed and maintained Oxygen+, a custom kernel for SM8250 devices, ensuring stability, battery backup, and performance. Adapted common SM8250 CodeLinaro-based kernel tree and merged latest Linux 4.19.y and CLO tags.

Kernel Development Linux Kernel C Shell Scripting Debugging GitHub

Current

Freelancer as Technician for Computer and Smartphones

Current

Self Employed

Jan 2022 - Present (4 years 9 months)

Troubleshooting, fixing, and repairing laptops and smartphones, both software and hardware.

Hardware Repair Software Troubleshooting Laptop Repair Smartphone Repairs

Current

Freelancer as Android Systems Engineer

Current

Self Employed

Jan 2021 - Present (5 years 9 months)

Maintained and ported custom ROMs for multiple devices, supporting Android 11–16. Automated ROM porting and patching processes using shell scripts, and developed advanced features such as auto-updating Play Integrity Fix and per-app thermals.

Android OS Development Shell Scripting Debugging Kernel Porting JSON Configuration Userspace Profiling

Education

Degrees, certifications, and relevant coursework

Sunan Kalijaga State Islamic University

Bachelor of Science, Informatics Engineering

2021 - 2025

Grade: 3.46 GPA

Graduated with a 3.46 GPA, studying software development and artificial intelligence, with skills in system analysis, app development, and database management.