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We are Fly Frisson, building HASH (#), a next-generation smartphone platform and mobile operating system. We are looking for an experienced Android/AOSP developer to help us build the first bootable version of HASH OS. The project includes building AOSP from source, integrating a custom launcher, adding HASH branding, ensuring Android app compatibility, and developing new native components using Rust wherever practical. Our long-term goal is to create a fast, lightweight, efficient, secure, and modern mobile platform with its own unique user experience. If you have experience with AOSP, Android platform development, Linux, Rust, or custom ROMs,
Project ID: 40614555
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Active 3 days ago
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61 freelancers are bidding on average ₹103,897 INR for this job

Hello there, I will build the first bootable version of HASH OS for Fly Frisson: AOSP compiled from source, your custom launcher integrated, HASH branding applied across the system UI, and Rust native components wired in where they replace Java/C++ hot paths. On a recent AOSP custom build, stripping unused Google services at the system level cut boot time and idle RAM usage enough to feel like a different device. I will apply the same approach here. Questions: 1) Do you have a target device or emulator profile picked for the first boot (e.g., Pixel, generic ARM64 AVD)? 2) Are the launcher designs and branding assets ready, or will those be developed in parallel? Share your current repo or build manifest and I will confirm the scope for a working first image. Looking forward to discussing further. Best regards, Kamran
₹85,594 INR in 25 days
7.6
7.6

Hi, Bringing up a custom Android build is mostly about getting a stable platform first, then introducing changes in a way that's easy to maintain across future AOSP updates. The first bootable image should prove the build pipeline, hardware support, and core system behavior before investing in UI or platform features. I'd begin by getting AOSP building cleanly for the target device, integrating the custom launcher and branding, then validating Android app compatibility before adding new native components. For performance-sensitive services, I'd use Rust where it fits naturally without complicating the Android framework. One challenge is keeping platform modifications isolated enough that rebasing onto newer AOSP releases doesn't become a recurring bottleneck. Which device or hardware platform will HASH OS target for the initial bring-up? Which native components do you expect to implement in Rust first, and how should they interact with the existing Android framework? If we're aligned, I'd be happy to walk you through the implementation plan before we get started. Best regards Brandon
₹90,000 INR in 5 days
6.0
6.0

Hello, I've carefully reviewed your vision for HASH OS, and I understand you're building a next-generation smartphone platform based on AOSP, with the objective of delivering a fast, lightweight, secure, and modern mobile operating system while maintaining Android app compatibility. The immediate goal is to produce the first bootable version of HASH OS, including AOSP compilation, custom branding, launcher integration, native system components, and a scalable architecture that supports long-term platform evolution. I have experience working with Android platform development, Linux-based systems, custom ROMs, AOSP customization, native development, and modern backend architectures. I can assist with building AOSP from source, integrating a custom launcher, implementing HASH branding throughout the system, ensuring Android application compatibility, optimizing build performance, and developing new native components using Rust wherever it provides security and performance advantages. The architecture will remain modular, maintainable, and ready for future additions such as system services, OTA updates, security enhancements, and proprietary platform features. PLEASE INITIATE CHAT SO I CAN SHARE MY RELEVANT SYSTEM-LEVEL DEVELOPMENT EXPERIENCE AND DISCUSS THE HASH OS ROADMAP. Best Regards, Nikita Gupta
₹100,000 INR in 45 days
5.8
5.8

I'm MoHD Sadab, and when it comes to mobile operating systems, I've got the skills and experiences that can 'stir some magic'. My team and I are experts in Android and C programming with an extensive background in embedded systems and mobile app development. One of our greatest highlights is being able to put AI where others can't—this means slipping AI into the nooks and crannies of mobile devices, making them both intelligent and functional. Your project aligns perfectly with our strengths. In addition to our proficiency in AOSP, Android platform development, Linux, Rust, and custom ROMs, we bring a unique aspect to the table. We work across an array of stacks such as React, Flutter, Django, Node, AWS, GCP, Azure —and this lends us a cross-domain flexibility that's quite powerful. This versatility is reflected in our capacity to implement Odoo ERP end-to-end, design IoT hardware, and deliver on the complete web and mobile stack—a skillset that earnestly echoes the vision you have for HASH. With us onboard your project will benefit from efficiency without compromising speed or security. We possess the tenacity and acumen required to curate a fast lightweight system that can extend beyond its limits—we know how to make intelligent systems "actually ship". Let's build the Next Big Thing together.
₹112,500 INR in 7 days
6.1
6.1

Hello, Building a bootable OS is all about getting the foundations right. My focus would be on creating a stable AOSP build with clean branding, seamless Android app compatibility, and an architecture that's easy to extend as HASH OS evolves. I can help with AOSP compilation, custom launcher integration, system-level customization, and native component development where performance and security matter most. Particular attention will be given to keeping the OS lightweight, fast, and maintainable for future features. I'm available to discuss the roadmap for the first bootable release and long-term platform goals. Regards, Abhishek
₹100,000 INR in 7 days
5.7
5.7

✋ Hi There!!! ✋ The Goal of the project:- BUILD THE FIRST BOOTABLE VERSION OF HASH OS WITH AOSP, CUSTOM LAUNCHER, HASH BRANDING, AND A FAST, SECURE, LIGHTWEIGHT USER EXPERIENCE. <-- Questions --> 1. Which target smartphone hardware should the first HASH OS build support? 2. Do you already have the initial HASH launcher and branding assets? Similar Android platform projects have been completed involving AOSP builds from source, custom ROM development, Linux integration, custom launchers, Android app compatibility, native components, and performance optimization. The development approach will focus on creating a stable bootable foundation while keeping Rust integration practical for secure and efficient native components. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!
₹112,500 INR in 7 days
5.5
5.5

HI, KINDLY READ THROUGH MY PROPOSAL I will build the first bootable version of HASH OS from AOSP source, integrate your custom launcher, apply full HASH branding, ensure seamless Android app compatibility, and develop new native components in Rust wherever practical delivering a fast, lightweight, secure, and modern mobile platform foundation. MY APPROACH ✅ Phase 1: Set up full AOSP build environment, compile clean base system, and verify bootability on target hardware. ✅ Phase 2: Integrate custom launcher, apply HASH branding, and ensure Android app compatibility layer. ✅ Phase 3: Develop selected native components in Rust, optimize performance, and deliver a fully working first bootable HASH OS image. RELEVANT PROJECTS - Multiple custom AOSP / ROM builds with launcher integration and branding. - Experience with Android platform development, Linux kernel, and Rust for native system components. DELIVERABLES - Bootable HASH OS image - Custom launcher + branding fully integrated - Source code, build scripts, and documentation - Rust-based native components where applied QUESTIONS 1. What target device / SoC will the first bootable version run on? 2. Do you already have a custom launcher design or UI mockups? 3. Any preferred AOSP version or specific features to prioritize in the first build? Ready to start immediately. I can deliver the first bootable HASH OS quickly after receiving the target hardware details.
₹110,000 INR in 4 days
5.9
5.9

With over 8 years of valuable experience in the Android development field, including a good command of Java and Linux, I am confident I can offer the expertise Fly Frisson needs for this project. My work history spans 200+ successful completed projects, many of which involved building AOSP from source - one of the key requirements of this job. Additionally, my familiarity with mobile app development, notably in Flutter and for iOS, would provide your team with well-rounded capabilities as we transition HASH into a viable platform. Finally, I take pride in my clear communication skills and fast-paced approach; you won't be kept waiting unnecessarily. Dedicating myself to turning your vision into reality is not just a phrase for me; it's what drives me forward every day. I hope to collaborate closely with the Fly Frisson team on this exciting journey, and I thank you for considering my proficiency at this critical junction.
₹112,500 INR in 7 days
5.1
5.1

Hi, I'm a Flutter/Dart developer with hands-on experience building and shipping production apps across fintech, healthcare, education, and travel — currently live on both Play Store and App Store. A few examples from my portfolio: • Finnov & MinePay — fintech/payment apps with secure transactions and clean UX • PrayagEdu — school management app (Android + iOS) handling student/parent/teacher workflows • SNAH Caregiver & SNAH Users — dual-app healthcare ecosystem connecting caregivers with patients • MedNob AI & Jepluse — medical/health apps with AI-assisted features • Thatzal & Thatzal Trip — travel and trip-planning apps with booking flows • GetOurStay — property/stay booking platform • Lisners & Lisners Therapist — dual-sided therapy/audio platform for clients and therapists Across these projects, I've handled end-to-end development: clean architecture, state management (Bloc/Provider/GetX/RiverPod), REST/Firebase integration, push notifications, payment gateways, and smooth deployment to both Play Store and App Store. I focus on writing maintainable, scalable code and communicating clearly throughout — regular updates, honest timelines, and no surprises. I'd love to understand your project requirements in more detail and share how I can bring similar quality and reliability to your app. Happy to start with a quick call or share more code samples/case studies. Looking forward to working together. Best regards, Kishore Patidar
₹80,000 INR in 30 days
4.8
4.8

With almost a decade of experience in web and mobile development under our belt, we definitely have what it takes to make your HASH OS project a success. Our expertise in Android, Mobile App Dev, and Software Development, as well as a deep understanding of the AOSP and Android platform, is exactly what you need for this job. Moreover, our proficiency in Rust puts us ahead of others as we can develop new native components specifically to meet your unique system requirements. In addition to building from source, integrating custom launchers and branding, we also take pride in ensuring seamless compatibility with existing Android apps- a crucial aspect that guarantees a frictionless user experience. Most importantly, we understand the value of client satisfaction- which is why we provide not just effective costings but also offer free 3 months support for any post-development issues. With us, you'll not only get a faster, lighter, more efficient HASH OS but also an excellent professional relationship beyond the project limits. Choose us today and together let's turn your idea into reality!
₹112,500 INR in 7 days
5.3
5.3

Hi, I can help build the first bootable version of HASH OS based on AOSP, including source build setup, custom launcher integration, HASH branding, Android app compatibility, and native component planning with Rust where practical. The best solution is to start with a clean AOSP build for a supported reference device or emulator, confirm boot stability, then add the custom launcher, wallpapers, boot animation, system branding, default apps, package configuration, and required platform-level changes step by step. I’m comfortable with AOSP, Android platform development, Linux build environments, custom ROM workflows, Java/Kotlin, C/C++, Rust integration planning, Android SDK, system apps, launchers, build scripts, debugging boot issues, and documentation. Deliverables include: * AOSP build environment setup * First bootable HASH OS image * Custom launcher integration * HASH branding and boot assets * Android app compatibility checks * Native component/Rust roadmap * Build and flashing instructions * Source code changes documented * Bug-fix support for first boot I’ll focus on a stable first milestone that gives HASH OS a working bootable base for future UI, security, performance, and platform-level development. Best regards Ankit
₹75,000 INR in 10 days
4.3
4.3

Hi, Senior Android/AOSP Developer: With 15+ years of experience, I specialize in mobile operating systems and am excited to help Fly Frisson create the HASH OS. My focus will be on building a robust, bootable version that meets your innovative vision. Execution Strategy: - Build AOSP from source, ensuring a seamless integration of the HASH OS framework. - Develop a custom launcher that aligns with HASH branding and user experience goals. - Ensure compatibility with existing Android apps while incorporating new native components using Rust. - Optimize for performance and security, delivering a lightweight operating system. Key Deliverables: - Fully functional bootable version of HASH OS. - Customized launcher with unique branding. - Comprehensive documentation for future development. - Enhanced security features integrated into the OS. Quality & Performance: - Adherence to engineering standards for efficiency and reliability. - Scalability to support future features and updates in the HASH ecosystem. Timeline & Next Steps: - Estimated delivery within 4-6 weeks, with regular updates. - Availability for ongoing support and adjustments post-launch. Best Regards, Karthik B Resonite Tech
₹149,500 INR in 7 days
4.1
4.1

Hi, Read through the HASH brief. Interesting project. Let me be straight about where I fit. I'm comfortable in the custom ROM world from the user side, I've flashed plenty of open source ROMs, so bootloaders, fastboot, recovery, partition layouts and GSIs aren't new to me. But I'll be honest, I haven't built AOSP from source for a device and taken it to first boot. Device trees, vendor blobs, kernel configs, SELinux policy, that's a different level and I don't want to learn it on your budget when the first milestone is whether the thing boots. Where I'd actually add value: Custom launcher and system apps once there's a working build. Rust components at app and service level, including JNI bridging. Backend and services around the platform. App compatibility testing and fixing what breaks. If this is one contract from bring up all the way through UX, I'm probably not the right fit. If you split it, platform person for the bring up and someone else for launcher, system apps and the Rust work, then that second half is something I'd be genuinely interested in and could move fast on. For the platform side, the LineageOS and postmarketOS maintainer circles are where those people actually are. Might save you some filtering time. Good luck either way.
₹120,000 INR in 30 days
4.2
4.2

Hi. This is Daniel from Oregon Building HASH OS requires deep Android platform engineering, not only application development. The critical areas will be creating a reliable AOSP foundation, maintaining Android compatibility, optimizing system performance, and delivering a unique user experience at the operating system level. Our team has experience across Android development, Linux-based systems, C/C++ engineering, embedded environments, software architecture, and performance-focused applications. We can help with AOSP source builds, custom launcher integration, platform branding, native components, and system-level optimization. My recommendation is to keep HASH OS modular from the beginning: separating platform modifications, native services, and user experience layers will make future hardware support, security improvements, and feature expansion much easier. We are ready to collaborate on the first bootable version and build a strong technical foundation for the long-term mobile platform vision. Q1 – Which target hardware device or chipset should the first HASH OS build support? Q2 – Which Android version and AOSP branch are you planning to use as the foundation? Q3 – Which system components are the highest priority for Rust-based implementation? Glad to go through this project and recommend my technical suggestion. Looking forward to working with you
₹112,500 INR in 21 days
4.3
4.3

Hello, "Custom AOSP Build With Rust Integration" - building first bootable HASH OS. I’ll start by syncing the AOSP source with repo tool, then add your custom launcher and branding; Rust will be used for performance‑critical native services. I automated a similar Linux‑based build process: https://www.freelancer.com/projects/automation/Automate-Reolink-Video-Backup-Script/reviews Device‑tree tweaks and kernel config are often tricky; I’ll verify compatibility on your target hardware early to avoid later stalls. Which target device(s) are you planning to support first? Looking forward to working with you. Artur Giżycki
₹120,000 INR in 6 days
3.8
3.8

Your vision of creating HASH OS as a modern, lightweight mobile platform immediately stood out. The challenge is building a stable, bootable AOSP foundation while introducing a unique user experience without compromising Android compatibility, performance, or long-term maintainability. My approach would be to establish a clean AOSP build environment, integrate your custom launcher and branding, optimise the platform for performance, and develop modular native components using Rust where it provides clear security and reliability benefits. The architecture would be designed to support future platform enhancements while maintaining compatibility with existing Android applications and a streamlined development workflow. I've worked on software development and system integration projects where scalable architecture, performance, and maintainable code were key priorities. While I don't claim prior AOSP platform development, I'd be happy to review your roadmap, discuss the overall system architecture, and collaborate on building a stable, production-ready foundation for HASH OS with a clear milestone-based development plan.
₹100,000 INR in 7 days
3.9
3.9

With an arsenal of skills and deep expertise in Android, Linux, and Mobile App Development, I am a perfect contender for your HASH OS project. Having worked on various Android projects, including custom ROMs, through five years in this field, I can assure you of a comprehensive and exceptional creation of the first bootable version of HASH OS. My proficiency extends beyond just app development as I have strong experience in C Programming and Embedded Systems, which is crucial for the task of building AOSP from source and adding new native components using Rust. Moreover, to create a unique user experience for HASH OS, my knowledge of Java and Linux will be immensely valuable to ensure a smooth integration of your custom launcher, branding and guaranteeing Android app compatibility. Apart from strong technical skills, I offer outstanding soft skills as well. Clear communication is pivotal for successful project execution and I make it my top priority to provide regular updates and maintain transparency throughout project timelines. Let me bring my passion for quality work, meticulous attention to detail and a penchant for turning ideas into successful digital realities to your HASH team. Looking forward to turning your vision into a reality together!
₹90,000 INR in 7 days
3.8
3.8

With my extensive experience in mobile app development, particularly in the Android domain and with an emphasis on the Java programming skills - I am confident that I'm a perfect fit for your HASH OS project. Over the years, I have developed a keen understanding of building from an open-source platform like AOSP and personalizing it to meet specific requirements through my work on numerous custom ROMs. Moreover, since your project also focuses on integrating Rust, I'd like to highlight my strong background in not just being familiar but having worked extensively with different technologies like Linux and Rust. In this manner, I bring not only the practical coding aspects but also an understanding of how these components interact which is vital when we aim to create a fast, lightweight, efficient, secure and modern mobile platform as you desire. Lastly, my broader skill set across backend service development and database optimization serves as an additional advantage for me to deliver well-architected, scalable solutions. I'm ready to hit the ground running immediately - let's explore how we can turn your vision for HASH OS into an industry-disrupting reality!
₹75,000 INR in 14 days
3.2
3.2

Hello, "AOSP Build with Rust Integration" - you need a bootable Android platform with custom branding. I will compile the AOSP source on a Linux server, apply your HASH branding and custom launcher, then add native Rust modules for performance‑critical parts. Using Docker containers will keep the build environment clean and reproducible. I have previously built a Modbus TCP device simulator using Node.js and Python, delivering fast results and handling low‑level integration issues. Will the custom launcher need support for specific hardware drivers or sensors?
₹80,000 INR in 30 days
3.0
3.0

As a seasoned Android developer, I firmly believe my experience in creating AOSP, managing mobile operating systems, and knowledge of Linux will make me a valuable asset to your HASH OS project. Over the past six years, I have worked on several diverse projects, honing my skills in Android development along with gaining proficiency in C programming and software development. My repertoire extends beyond mobile app creation as I have also built AI agents, automation systems, and full stack platforms that work in production. These experiences teach the value of creating reliable and efficient systems that meet end-users' expectations. Incorporating this mindset into the development of HASH OS will guarantee longevity, a unique user experience, and most importantly, stability. In addition to my technical skills, my clients have always appreciated my clear communication style and quick turnaround. Delivering a project that aligns exactly with your vision is one of my top priorities. Choosing me means choosing a partner who not only understands the nuances of the project but is also determined to provide full ownership - from architecture to deployment and documentation. My previous projects speak to my commitment and I am excited at the prospect of being involved in a transformational project like building HASH OS.
₹100,000 INR in 3 days
2.7
2.7

Erode, India
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