Hire the Best AOSP Professionals

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Dmitriy A.

Senior Software Engineer | C++, Java | AOSP Developer (16+y)

Pavlodar, Kazakhstan
$45 per hour
144 jobs
$400K+ total earnings

I am a software developer with 16 years of experience in C++ and Java programming and over 11 years of expertise in Android Open Source Project (AOSP) development. I have a deep understanding of Android architecture, system component modifications, and creating custom AOSP-based solutions including secure hardened ROMs and deniable encryption solustions such as mobiflage I have experience in Android application development, building scalable, user-friendly apps with a focus on performance and reliability. Experience with background in FFmpeg and GStreamer, leveraging these technologies for multimedia processing and streaming solutions. My work with Sunshine and Moonlight-qt, open-source streaming platforms, highlights my ability to deliver high-quality remote desktop and game streaming solutions.

Kimberly Christine B.

AI Integration Engineer | 25x Better - Mobile, Desktop, Browser & OS

Kansas City, Missouri
$70 per hour
10 jobs
$1K+ total earnings

If your last AI project stalled out, ghosted, or shipped six months late, this is the profile that fixes that. If it hasn't happened yet, read this, because it happens to almost everyone who hires for AI work, and I built my entire practice around being the exception. Here's the actual problem in this market right now. It's not that AI integration is hard. It's that most people who claim to do it have touched one framework, one API, and one platform, then market themselves as AI engineers. The moment your project needs something outside their skills, face some issues, your requirement increases to native mobile, a desktop app, a modified open source model, OS level work, they stall, go quiet, or hand you back a half finished repo and disappear. You've either lived through this already or you will if you hire the wrong person next. I built my whole practice so that never happens to you. What I actually do I integrate AI into anything with a codebase. Not one platform. Not one language. Everything. React Native and Flutter for cross-platform mobile Native Android in Kotlin and Java, native iOS in Swift Desktop applications in Electron, Tauri, C++, and Python Full website builds with AI woven into the product, not bolted on after Custom LLM and ML platforms built from scratch Large scale workflow automation platforms, real N8N replacements with trigger based execution and multi model support (OpenAI, Claude, Gemini) Deep modification of large existing codebases including Chromium, DeepSeek, and other major open source AI and browser codebases Custom models tuned for specialized hardware and constrained devices AI OS level work, AOSP builds, and Linux system development If your project needs AI touching a browser engine, a mobile app, a desktop client, and a backend model all at once, most freelancers can do one of those four. I do all four, on the same project, without handing you off to three other people. Why 25x isn't a marketing number for me I don't scope projects the conservative way, where the estimate pads in three weeks of "safety buffer" that's really just covering for uncertainty. I scope backwards from your deadline and tell you exactly which shortcuts are safe to take to hit it. Reused architecture instead of building from zero. AI assisted code generation for boilerplate so human hours go to the parts that actually need human judgment. Parallel workstreams instead of sequential ones. That's how projects that would normally take a quarter get scoped into weeks, and it's the same approach across every platform listed above. The value stack, what you actually get A working architecture plan before a single line of billable code gets written Daily or same day communication, no multi day silence Code that's built to survive the next platform update, not just pass a demo A developer who has already solved the exact cross platform AI integration problem you're facing, not one learning it on your dime Direct access to me, not a project manager relaying messages from an offshore team My guarantees Response guarantee. If I go more than one business day without responding to you during an active engagement, that day is free. No invoice for it. Architecture guarantee. Before you commit to a full build, I'll scope the technical plan first. If the plan doesn't hold up to your team's scrutiny, you owe me nothing for that scoping call. I'm not offering a blanket money back guarantee on finished work, because that invites exactly the kind of client who wants free labor, and that's not who this profile is for. I'm offering the guarantees that actually matter on a technical project: that I show up, and that the plan is sound before you spend real money on execution. Who this isn't for If you're looking for the cheapest possible rate and you're comparing five nearly identical proposals purely on price, I'm not your match, and that's fine. This profile is for the founder or team that already got burned once, or is smart enough not to want to find out what that feels like, and wants one accountable person who can actually cover the full stack their project touches. Availability I take on a limited number of active engagements at a time because the whole value proposition here is that I don't disappear, and that's not possible if I'm spread across fifteen clients. If this posting caught me at the right time, that's good news for you. If you're reading this later and my calendar shows limited availability, that's why. Message me with what you're building and where it's currently stuck. I'll tell you straight whether I'm the right fit and what the fastest real path to done looks like, no inflated timeline, no disappearing after weeks.

Ihtesham U.

Mobile test engineer

Riyadh Saudi Arabia, Saudi Arabia
$20 per hour
9 jobs
$92 total earnings

Providing academics and training to engineers on all aspects of the technical Perform field test analysis for customer reported issues. Diagnose, analyze data, offer corrective actions, and provide report regarding results. Interface with customers engineering staff when necessary. Testing of Enterprise Mobility management software WLAN verification along with various access points and open networks Testing of handset android devices Chipset testing of both QUALCOMM and MEDIATEK for all technologies including 5G-NR, NSA and SA. Preparation of bug & test summary report, Execution of test cases on GSM, WCDMA/UMTS, LTE, IRAT and VoLTE ,Involvement in Test plan Preparation and preparation of test strategy UI Testing, Integration Testing, Regression Testing, Network Testing, 2G/3G/4G/LTE Testing Log capturing on logging tools like QxDM, ELT, Wireshark, ADB, ODL

Masoud H.

RFID Inventory & Asset Tracking Expert | Warehouse Automation

Istanbul, Turkey
$40 per hour
44 jobs
$80K+ total earnings

Is your inventory counting taking days instead of hours? Are stock discrepancies costing you money? Many RFID and inventory tracking projects fail — not because the idea is wrong, but because too much time and budget are lost on trial and error: ❌ Wrong RFID hardware choices — readers, antennas, or tags ❌ Unclear technical direction ❌ Multiple vendors that do not speak the same technical language That is why I prefer to start small and validate early. 🔎 HOW WE BEGIN — A FOCUSED FIRST STEP ✅ Understand your exact use case: • Warehouse inventory • Asset tracking • Stock counting • Process automation ✅ Select RFID hardware that actually fits the project: • UHF RFID readers • Fixed or handheld scanners • RFID tags and antennas ✅ Test the solution with a small pilot before scaling This approach helps avoid rework, reduces unnecessary back-and-forth, and keeps technical decisions simple. 🤝 WHY CLIENTS STAY WITH ME LONG-TERM I handle both RFID hardware integration and custom software development, including: • Inventory management systems • Real-time asset tracking dashboards • Barcode and RFID scanning applications • ERP and third-party system integrations There is no handoff between separate hardware and software teams. I've worked hands-on with major RFID platforms, including Zebra, Impinj, and Chainway — so hardware selection is based on real experience, not spec sheets. 🎯 One technical direction 🎯 One point of responsibility 🎯 Clear next steps If the first pilot works, we move forward phase by phase. If it does not, we stop early — before too much time or budget is spent. 🛠️ WHAT I CAN HELP YOU WITH • RFID inventory management systems (UHF fixed and handheld readers — Zebra, Impinj, and Chainway) • Hardware selection, integration, and testing (readers, antennas, printers, and tags) • Warehouse and stock-counting automation • Real-time asset tracking solutions • Barcode and RFID mobile applications • Barcode and RFID desktop software • ERP, API, and third-party integrations • Inventory workflow and process automation 📩 SEND ME A MESSAGE Send me a short description of your use case. I will tell you honestly whether RFID is the right fit and what the smallest practical first step would look like.

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Don't just take our word for it

What does an AOSP freelancer do?

An AOSP freelancer modifies the Android operating system at the source code level and submits those changes to the official upstream project for integration. This work requires deep familiarity with the Android build system and strict adherence to the open source contribution guidelines maintained by Google. You write platform-level code that affects core system behavior rather than building standard applications on top of the OS. Your output becomes part of the public Android codebase after passing rigorous technical review.

  • Initialize and sync the massive AOSP source tree using the repo tool, then configure a local build environment to compile specific Android components from scratch. You select target devices and build variants to test your modifications in a realistic system context before sharing any code with reviewers.
  • Write C++, Java, or Kotlin code to implement new features or fix bugs within the Android framework layers such as SystemUI, telephony, or connectivity services. You use debugging tools like adb and logcat to trace system crashes and verify that your changes produce the intended behavior without breaking existing functionality.
  • Prepare clean patch sets that follow the project’s coding standards and commit message formatting rules before uploading them to the Gerrit review server. You address detailed feedback from maintainers by rebasing your changes, resolving merge conflicts, and pushing updated revisions until the code meets the quality bar for submission.

How to hire an AOSP freelancer on Upwork

Step 1: Post a job

Define the specific Android platform components you need modified and the build environment requirements. Use the Job Post Generator powered by Uma™, Upwork's Mindful AI to draft your listing. Describe your needs in a few sentences and Uma drafts a job post for the role. You can write a new post, update a saved draft, or reuse an existing post.

  • Specify which AOSP modules require changes, such as framework services or hardware abstraction layers, so candidates know the technical scope.
  • List required tools like repo for source synchronization and Gerrit for patch submission to filter for experienced contributors.
  • Include details about your target device architecture and Android version to attract freelancers with relevant build experience.

Step 2: Evaluate candidates

Look for portfolios that show verified contributions to the Android Open Source Project rather than just app development. Uma can run instant video interviews and build shortlists with side-by-side comparisons to help you assess technical fit.

  • Check for public Gerrit change lists that demonstrate successful patch submissions and iterative review responses.
  • Verify experience with presubmit verification testing to ensure the freelancer can produce builds that pass automated checks.
  • Review examples of bug fixes or feature implementations in platform code to confirm deep system-level understanding.

Step 3: Interview your top choices

Discuss their approach to debugging complex system behaviors using adb and logcat during live sessions. Interviews can be scheduled and conducted within Upwork Messages with an immediate transcript and summary after each one.

  • Ask how they handle rebase conflicts when updating patches after receiving feedback from AOSP maintainers.
  • Request examples of how they diagnosed boot loops or system crashes in previous custom Android builds.
  • Evaluate their familiarity with the AOSP contribution workflow, including repo sync strategies and branch management.

Step 4: Agree on scope and begin work

Define clear milestones for code submission, review iteration, and final verification testing. Use Upwork Messages and the contract workroom for communication and project management, plus identity verification, payment protection, hourly tracking, and project funds for security.

  • Set deliverables for specific reviewed AOSP code changes submitted to the review system with passing test results.
  • Require documentation for change assumptions and background notes as part of each patch submission package.
  • Establish a schedule for rebasing and re-uploading patches until they meet upstream quality standards and merge.

Upwork is not affiliated with and does not sponsor or endorse any of the tools or services discussed in this article. These tools and services are provided only as potential options, and each reader and company should take the time needed to adequately analyze and determine the tools or services that would best fit their specific needs and situation.

The rates and information provided in this article are based on current data and industry sources available at the time of publication. Freelance rates can vary depending on factors such as experience, location, project scope, and market conditions. Readers are encouraged to conduct their own research to confirm current rates and trends, as this information may change over time.

How much does hiring an AOSP freelancer cost?

Hiring an AOSP freelancer typically costs $500-$1,500 per project, depending on scope and experience. Final pricing depends on the complexity of platform modifications, required build environment setup, integration depth, and the freelancer's familiarity with upstream review workflows.

Build environment setup

$500-$1,000/project

Entry-level to mid-level
  • Initialized AOSP source tree and synced repositories
  • Successful local build of target Android components
  • Setup notes and dependency list for future builds

Bug fix implementation

$1,000-$2,500/project

Mid-level
  • Root cause analysis using adb and logcat tools
  • Code change submitted to Gerrit for review
  • Verified fix in test build with presubmit checks

Feature customization

$2,500-$5,000/project

Mid-level to senior-level
  • Modified framework or platform component code
  • Run presubmit verification and address feedback
  • Rebased patch series ready for upstream merge

System integration

$5,000-$8,000/project

Senior-level
  • Design document for platform-level changes
  • Integrated custom modules into AOSP build system
  • Resolved all reviewer comments on Gerrit server

Full platform modification

$8,000-$15,000/project

Expert-level
  • Comprehensive plan for major Android component changes
  • Complete feature set built and tested on target devices
  • Final merged code and maintenance documentation

Frequently asked questions

Is hiring an AOSP freelancer worth it?

For most businesses, yes: hiring an AOSP freelancer is worthwhile. These specialists modify the Android operating system at the source code level to meet specific hardware or compliance needs that standard app development cannot address. You gain access to deep platform expertise without maintaining a full-time team for complex build environments and upstream contribution workflows.

How do I evaluate AOSP freelancer candidates?

Evaluate candidates by reviewing their public contributions to the Android Open Source Project on Gerrit or asking for examples of custom framework changes they have built. Look for evidence that they can set up the repo tooling, resolve build errors in modified components, and iterate on patches based on reviewer feedback.

What tools does an AOSP freelancer use?

An AOSP freelancer uses the repo command-line tool to sync source code and Gerrit to submit patches for review. They also rely on Android Studio for coding, adb for device debugging, and logcat to analyze system behavior during testing.

Can an AOSP freelancer customize the Android operating system?

Yes, an AOSP freelancer builds modified Android components from source to implement custom features or remove unwanted services. They test these changes in verified builds before submitting the code for upstream review or internal deployment.