Custom AOSP ROM Development

@AmitPal10000001

Hi, I have experience in Android AOSP development not only in application development. I am working internal part of Android OS. Creating System Service and create new framework component. I If you have some clear vision for custom ROM development please connect with me for details. I can help you. Thanks, Amit

@KarthikTechCon

Hello, I’m Karthik, with 15+ years of experience in Android systems engineering, embedded Linux, kernel-level customization, and low-level mobile platform development. I understand this project requires real AOSP/framework expertise beyond standard Android application development. I can assist with: • Custom AOSP ROM compilation and maintenance • Framework-level Android service modifications • Multi-user isolation and privacy-focused architecture • LocationManagerService, PackageManagerService, AppOps, Binder IPC customization • SELinux policy tuning and telemetry reduction • KernelSU/APatch/Zygisk compatibility • Performance optimization for Unisoc/SPD hardware • Stable rooted ROM environment and modular framework design My experience includes: • Android framework engineering • Custom ROM/device tree integration • System_server and runtime modifications • Linux kernel and Android internals • System-level debugging and optimization • Privacy/security-focused Android customization Deliverables will include: • Bootable ROM image • Source code and framework modification documentation • Flashing/recovery instructions • Stable update and rollback guidance I can also help define a maintainable architecture for your isolation and virtualization concepts while keeping performance and stability as priorities. Regards, Karthik

@mubeenm5026

As a seasoned Android developer with over a decade of experience, Android systems development is my bread and butter. I've not just built standard Android apps, but also tailor-made custom ROMs, tweaking every nook and cranny to suit individual requirements. Framework-level modification? Multi-user isolation enhancement? Rooting and hooking compatibility? You name it, I've done it. The comprehensive skill set you're seeking aligns perfectly with my proficiencies in AOSP compilation, Linux kernel basics, SELinux, Binder IPC, system-level debugging to name just a few. My 'Web Crest' team and I are committed to creating intelligent and scalable solutions that focus on stability, clean architecture, performance, modularity, and privacy- and your project's description resonates deeply with this vision. Now, I understand the need for proof in the pudding. Here's where my track record speaks volumes; we have consistently completed 98% of our projects at Web Crest with stellar feedback reflecting our technical acumen and efficient deliveries.

@Dliteinformation

With my extensive experience in Android systems, such as Android App Development, Android Studio and Java, and years of work with custom ROM engineering and AOSP/framework development, I am perfectly poised to deliver a superb custom AOSP ROM for your Realme C21Y. My knowledge expands beyond standard Android development, extending into Android internals, Linux kernel basics, SELinux, Binder IPC and notably into the security realm that your project greatly emphasizes. For the specific areas you require deep customization on, including LocationManagerService, PackageManagerService, AppOps and background service stability among others; my previous projects have seen me extensively modifying these frameworks to achieve desired functionality. Moreover, android's multi-user architecture is an area I am well-versed with and I have successfully worked on projects that demanded similar logic. I take pride not just in creating functional solutions but building them for lasting performance. My fluency extends into AOSP compilation, device trees/vendor blobs for compatibility optimization as well as system-level debugging for rooting/hooking compatibility. I hope to bring my skills on board to deliver not just a stable Bootable ROM image and accompanying documentation but a perfect update path and recovery method that guarantees your users' satisfaction. Let's turn this intricate project into an extraordinary reality together!

@sonika1419

**DO NOT PAY ME UNTIL I COMPLETE! :)** Hello my valuable client :) My profile is new over here but I have 7 years of experience in this field. I have completely understood about your project. Also I will provide you free maintenance on your project for 1 year after project completion. I can definitely complete this in your timeframe. Give me one chance to prove myself. Hit the chat button to get started. If you will not like my work then you dont need to pay me any money so dont worry and have faith in me :) I am eagerly waiting for your message.

@chiragardeshna

Hi there, Strong alignment with this project comes from experience working with Android system internals, AOSP customization, framework-level modifications, and performance-focused ROM engineering for custom Android environments. Clear understanding of the requirement to develop a custom AOSP ROM with framework customization, multi-user isolation behavior, privacy-focused optimizations, system service modifications, and rooted environment compatibility. Hands-on expertise with AOSP compilation, Android framework engineering, SELinux policies, Binder IPC, KernelSU, Zygisk, LSPosed architectures, and system-level debugging ensures stable and modular ROM development. Risk is minimized through structured framework testing, performance optimization, rollback planning, stable update paths, and clean documentation for flashing and long-term maintenance. Available to start immediately happy to share a quick demo or discuss architecture and next steps. Recent work: https://www.freelancer.com/u/chiragardeshna Regards Chirag

@guptakishan805

Hello, Your project clearly requires advanced Android systems knowledge, and I understand the level of framework customization involved in building a stable AOSP-based ROM. With experience in Android internals, custom ROM environments, system-level optimization, and framework modifications, I can help develop a clean, privacy-focused ROM for the Realme C21Y with strong focus on stability, modularity, and long-term maintainability. I’m familiar with Android framework services, SELinux policies, Binder IPC concepts, multi-user architecture, and rooted environments including KernelSU and Zygisk. My development approach emphasizes clean implementation, proper documentation, performance optimization, and reliable update support for smooth future maintenance and deployment. Best Regards

@vasylklymiu

This project is similar like rebuilding operating system engine inside a car where privacy, stability, and low-level control are more important than normal app features. I worked before on similar AOSP and Android framework modification projects involving system service customization, rooted environments, SELinux adjustments, and ROM optimization for lower-end hardware devices. I think separating framework modifications into modular layers first will make debugging and long-term ROM maintenance much safer and more stable. As a senior Android systems developer with 8 years of experience, I am very good with Android SDK. I expect it will take 15 days to complete this project. May I ask a question first? Do you already have unlocked bootloader and working device tree/vendor blobs for the Realme C21Y? I am waiting for your reply. Vasyl.

@Visharaa2024

I am an experienced Android systems developer ready to build a custom AOSP-based ROM for the Realme C21Y (Unisoc/SPD platform) with advanced app isolation and deep framework-level customization. The ROM will focus on privacy-centric system design, multi-user isolation enhancements, and modifications to core Android services such as LocationManagerService, PackageManagerService, AppOps, sensor frameworks, and Binder IPC, while ensuring stability, performance, modularity, and clean architecture. I will implement custom app isolation behavior, per-app permission restrictions, selective package visibility, framework-level location virtualization, and background service optimizations, all within a secure, rooted-compatible environment leveraging KernelSU, Zygisk, and LSPosed/Xposed concepts as needed. Deliverables will include a bootable ROM image, full source code and documentation, flashing and rollback instructions, and a stable update path, along with a detailed explanation of framework modifications. With extensive experience in AOSP compilation, device trees, vendor blobs, Linux kernel basics, and Android framework engineering, I can deliver a high-performance, privacy-focused, and fully functional custom ROM. Examples of previous ROM and framework work, GitHub/GitLab links, and platform experience are available to demonstrate proven systems-level Android expertise.

@serviceaxisgroup

Hi, I can help with delivering a bootable, privacy-focused custom AOSP ROM for the Realme C21Y that includes advanced multi-user app isolation and framework-level service customization. I’ll start by syncing your AOSP baseline for the Unisoc/SPD device, setting up a reproducible build/flash pipeline, and mapping each required framework change (LocationManagerService, PackageManagerService, AppOps, sensor + system_server) into small commits. To reduce risk, I’ll keep modular patches behind clear toggles, add SELinux verification, and document every framework diff for easy review and rollback. Which exact AOSP source/branch do you want, and do you prefer KernelSU or Zygisk/LSPosed compatibility-first? If you share that, I’ll propose a short milestone plan and timeline.

@shahidhabib791

Hello, I am an experienced Android systems developer with strong expertise in AOSP-based ROM development, framework-level customization, and deep Android internals work. I have worked on system-level modifications involving Android framework services such as PackageManager, AppOps, and system_server behavior, as well as performance optimization, SELinux policy adjustments, and custom ROM builds for ARM-based devices. I fully understand the complexity of your requirements for the Realme C21Y (Unisoc/SPD platform), especially around custom app isolation, multi-user enhancements, privacy-focused system design, and framework-level service modification. For this project, I would begin by setting up a clean AOSP build environment for the target device, integrating the correct device tree and vendor blobs, and ensuring a stable base ROM before introducing any modifications. The next phase would focus on framework-level changes such as extending AppOps policies, modifying LocationManagerService behavior, and implementing controlled app isolation logic within system_server. I would also carefully design any multi-user and permission-layer enhancements to ensure system stability and compatibility with Android’s security model, including SELinux adjustments where required. Performance tuning and system optimization would be applied throughout the stack to ensure smooth operation on the target hardware.

@andriii2

Hi, Have you already mapped the framework changes needed inside system_server and AppOps, or are you expecting help defining the isolation architecture as well? This project requires real AOSP/framework engineering, especially around Binder services, PackageManager, multi-user isolation, SELinux, and privacy-focused system behavior on Unisoc hardware. My background is focused on system architecture, backend engineering, Android-based integration workflows, and performance-oriented mobile environments, which fits well with framework-level ROM customization rather than standard app development. I can help structure the ROM with clean service-layer modifications, stable isolation behavior, reduced telemetry exposure, optimized background handling, and compatibility with KernelSU/Zygisk-based environments while keeping the system modular and maintainable. I’d like to discuss the current device state, source availability, and framework scope in the next project chat. Best regards

@LouisVHB

This project fits well within my expertise, and I’ve successfully handled comparable work for previous clients of similar nature. I understand you need a custom AOSP ROM for Realme C21Y focusing on clean, professional, user-friendly, and seamless integration of advanced app isolation, framework-level service customization, and privacy-focused system design. Prioritizing stability, modularity, and performance resonates deeply with my approach to ROM development. I specialize in Android framework engineering, system-level debugging, and AOSP compilation. While I am new to Freelancer, I have tons of experience working off site on custom ROMs, including multi-user isolation and telemetry reduction. To build my reputation here, I’m happy to offer my services at a discounted rate. I would like to talk more about your project and discuss the points in which I think this should be handled. Regards, Louis Brink

@agarwalnikita106

Hello, I’ve reviewed your AOSP custom ROM requirement for Realme C21Y, and I can assist with building a stable, privacy-focused, framework-level Android system tailored to your specifications. My Approach ✔ AOSP-based ROM build for Unisoc/SPD platform ✔ Modular and stable system architecture ✔ Performance optimization for target hardware ✔ Clean system-level customization (framework-first approach) Core Development Areas Framework Modifications • PackageManagerService customization • AppOps permission control logic • Location & sensor service behavior tuning • system_server optimizations Privacy & Isolation Layer • App isolation enhancements • Per-app permission restrictions • Telemetry reduction strategies • Multi-user behavior improvements System Compatibility • Root support (KernelSU / APatch ready) • Zygisk / LSPosed compatibility awareness • SELinux policy adjustments • Binder IPC handling Deliverables ✔ Bootable AOSP ROM ✔ Source code + documentation of changes ✔ Flashing & recovery guide ✔ Stable update path ✔ Framework modification notes

@karthikresonite

Hello, Resonite Technologies has an experienced Android systems team with strong expertise in AOSP ROM development, Android framework engineering, SELinux policies, Binder IPC, and system-level customization. We can develop a custom AOSP ROM for Realme C21Y (Unisoc/SPD) focused on privacy, stability, modularity, and performance optimization. Our expertise includes: ✔ AOSP compilation & custom ROM engineering ✔ Framework-level modifications (LocationManagerService, PackageManagerService, AppOps, system_server) ✔ Multi-user isolation & privacy-focused architecture ✔ KernelSU, Zygisk, LSPosed/Xposed compatibility ✔ SELinux policy customization & telemetry reduction ✔ Binder IPC & Android internals debugging Deliverables: • Bootable custom ROM • Source code & framework modification documentation • Flashing/recovery instructions • Stable update path & optimization support We have prior experience with Android internals, rooted environments, custom framework behavior, and system-level optimization for commercial and advanced Android projects. We can also share relevant work samples and technical approach during discussion. Regards, Resonite Technologies