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I need a seasoned system-level engineer to build a truly standalone mobile operating system—not just an Android or iOS fork. The goal is to deliver a fully bootable image that ships with: • A visually distinctive, lightweight user interface designed from the ground up for touch • Security enhancements at kernel, system service, and application layers (hardened permissions, secure boot, encrypted storage, etc.) • A native app-store framework so third-party developers can publish, sign, and update apps over-the-air You’ll own everything from low-level board support through to UX polish, so experience with toolchains such as GCC/Clang, device tree configuration, kernel customization, and UI frameworks (Wayland, Qt, or similar) is essential. If you have previous work on AOSP forks, Sailfish, or custom ROMs, please highlight it, but be ready to go beyond simple modifications. Acceptance for each milestone will be based on: 1. Booting on reference hardware or emulator with logs showing a clean kernel. 2. Passing a defined security test suite (we can agree on specifics together). 3. Launching and installing an app through the integrated store without side-loading. Send over a brief outline of your proposed architecture, preferred toolset, and estimated timeline so we can dive straight into the technical details.
Project ID: 40285318
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Active 1 mo ago
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15 freelancers are bidding on average ₹70,917 INR for this job

Building a fully standalone mobile OS from scratch is a tough but exciting challenge. To tackle this, I’d start by creating a minimal Linux-based kernel tailored to your target hardware, configuring device trees and bootloaders to ensure clean, stable booting. I’d use GCC/Clang for compiling and focus on a lightweight UI built with Wayland and Qt for smooth touch interaction without overhead. For security, I’d implement secure boot combined with kernel hardening patches and build encrypted storage at the system layer. The app store would be designed around a signed package format with an over-the-air update mechanism, ensuring apps install and update safely without manual sideloading. A key early step is agreeing on the hardware platform you want to target first—do you have specific reference devices or emulators in mind? Also, what security frameworks do you prefer for the permission model? I’ve delivered a similar custom Android fork with extended security and a native app distribution system, where clean boot logs and app installs were core milestones and can quickly replicate that process here. I’ll draft the detailed architecture and timeline once we clarify hardware and security scope. Ready to start building the environment as soon as you give the go-ahead.
₹37,500 INR in 7 days
4.5
4.5

⭐⭐⭐⭐⭐ DEAR CLIENT ⭐⭐⭐⭐⭐ Hello, I have reviewed the project details. I have extensive experience in this field. My name is Jose Coa, and I have experience with custom OS development using GCC/Clang toolchains, kernel customization, and embedded UI frameworks. Proposed Architecture: Kernel: Custom Linux kernel (or RTOS base) with device tree support for reference hardware (e.g., Raspberry Pi, Qualcomm Snapdragon dev board). UI: Wayland compositor + Qt for touch‑optimized desktop (lightweight, gesture support). App Store: Native package manager with signed APK/DEB signing, OTA updates via delta patches. Security: Secure boot, encrypted storage (dm‑crypt), hardened kernel (SELinux/AppArmor), app sandboxing. Timeline: 3-4 weeks for bootable MVP (kernel + UI + store), $750 Fixed within budget.
₹75,000 INR in 7 days
4.4
4.4

With over a decade of experience in full-stack development, I am not only capable of creating mobile applications but also have the expertise necessary to build fully functional mobile operating systems from scratch. My proficiency in Android and iOS development, along with my deep knowledge of Objective-C, has equipped me to navigate every layer of mobile platforms effortlessly. I’m excited about the opportunity your project presents – it aligns perfectly with my passion for crafting efficient, high-performance systems that drive results. Regarding your specifications: as an experienced system-level engineer, I am adept at wielding toolchains such as GCC/Clang and using device tree configuration for low-level board support. Moreover, my familiarity with UI frameworks such as Wayland and Qt complements your requirement for a visually distinctive and intuitive user interface designed especially for touch. My know-how ranges from kernel customization to establishing secure boot mechanisms, making me well-equipped to cater to your needs regarding security enhancements. Aside from my technical expertise, my work ethic is oriented towards ???????????, ????????, and ????-????Ǐminimum technical debt. Hence you can rely on me not just for delivery but for building a solution that will be stable, scalable and maintainable over time. Looking forward to revealing the potential of a tailor-made OS that can tout all the key features you’re seeking!
₹56,250 INR in 7 days
4.8
4.8

Hi, I can develop a fully standalone mobile OS from the ground up, delivering a bootable image with a lightweight, touch-optimized UI, robust kernel- and system-level security, and a native app-store framework for over-the-air app distribution. My approach covers: Low-level system engineering: board support, device tree, kernel customization, and secure boot. UI/UX design: building a clean, distinctive interface optimized for mobile touch interactions. App ecosystem: integrated signing, publishing, and update workflow for third-party developers. Preferred toolset: GCC/Clang toolchains, Wayland/Qt for UI, and custom kernel + system service hardening. I have experience with AOSP forks and secure embedded systems and can provide logs, security validation, and app-store demos for each milestone. I can provide a detailed architecture outline and timeline once hardware/emulator specs are confirmed. Ready to start immediately and drive the project end-to-end.
₹37,500 INR in 10 days
2.2
2.2

Hey, I liked your project, Custom Mobile OS Development and believe I can help you with the project. With my background in C Programming, Android, User Interface / IA, I'm confident I can meet your requirements. Would be glad to go over specifics if you're interested.
₹37,500 INR in 7 days
1.6
1.6

Leveraging my five years of industry experience, I believe my skill set and approach align perfectly with your vision for this project. The need for a truly standalone mobile operating system that prioritizes lightweight UI, security enhancements, and native app-store functionality is something that resonates deeply with me. I’ve previously worked on projects where I've had to go beyond simple modifications, which adds credence to my adaptability and tenacity - traits that will undoubtedly prove invaluable while working on your project. My track record speaks volumes about my commitment to delivering exceptional results. One look at the 1000+ projects we have completed successfully should give you peace of mind knowing you’ve partnered with a team that is driven by a relentless pursuit of client satisfaction. My proficiency in Android, C Programming, iOS Development and User Interface / IA gives me an end-to-end perspective on creating custom solutions, as well as an advantage when it comes to integrating widely-used third party services. Notably, my experience in full stack development and proficiency in modern technologies such as React Native and Flutter for cross-platform apps make me superbly equipped for this undertaking; from low-level board support through to UX polish.
₹50,000 INR in 7 days
0.0
0.0

With over six years of professional experience as a full-stack developer, my expertise spans across everything from UI/UX design to mobile app development—making me an ideal candidate for your custom mobile OS project. I've successfully created several complex digital solutions and this includes working on low-level board support, kernel customization, and UI frameworks similar to what you're looking for.
₹45,000 INR in 18 days
0.0
0.0

Good morning! I can deliver your standalone mobile OS with hardened security and native app store framework. My Experience Custom Android Fork: Security-hardened OS for enterprise tablets (kernel patches + custom HAL) AOSP Kernel Customization: Real-time patches + device tree for ARM64 SoCs Embedded Linux: Bootable images with Qt/Wayland UI for industrial panels Secure Boot Implementation: ARM TrustZone + verified boot chain Proposed Architecture Bootloader: U-Boot (custom device tree) Kernel: Linux 6.1+ (real-time patches + seccomp + hardened usercopy) Init: systemd (containerized services) UI Framework: Qt6 + Wayland compositor App Store: Custom APK-like format + OTA differential updates Security: dm-verity + full-disk encryption + app sandboxing Hardware: Raspberry Pi 5 / Qualcomm RB5 reference (scalable to custom SoCs) Deliverables Complete bootable OS image for reference hardware Security test suite + audit reports App store SDK for third-party developers Full build toolchain + documentation Toolchain: GCC 14, Yocto Project, Qt Creator, custom device trees Ready to discuss your target hardware and security requirements—let's build the secure mobile OS you envision! — Shrey Tanna
₹250,000 INR in 45 days
0.0
0.0

Hello, I can develop your fully standalone mobile OS from kernel to UI, including secure boot, encrypted storage, and a native app store. I’ll handle board support, kernel customization, system services, and a lightweight touch-optimized interface. Toolchain will use GCC/Clang with Wayland/Qt for UI. Each milestone will deliver a bootable image, pass security tests, and install apps via the store. I’ll provide detailed architecture, documentation, and a realistic timeline for completion. Let's discuss further. Thanks!
₹99,999 INR in 7 days
0.0
0.0

Rāth, India
Member since Mar 8, 2026
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