Kotlin jobs

Dear Colin, Thank you for sharing the revised scope for the Smart Mirror AI Camera Tracking Prototype. After reviewing the requirements, I’m confident I can deliver a stable and demo-ready Android prototype using Kotlin & Java native development. The project will include integration of your existing tracking and zoom system, USB webcam compatibility for the Emeet S600L, real-time camera preview, Smart Mirror UI implementation, tracking overlays, motion handling, and performance optimisation for smooth demonstration use. My approach will focus on clean native Android integration, modular implementation for future scalability, and continuous testing to ensure stable tracking responsiveness and UI performance throughout development. Project Timeline: 12–15 Working D...

...end of each day. Users & permissions Three roles are enough for us right now: Admin (me) with full visibility and report export, Manager with create/edit rights, and Staff with view-only access. All sign-ins can be email/password or a simple phone-OTP—whichever you can wire up fastest. Tech notes The app will run on modern Android phones used in the yard, so please build native Android (Kotlin/Java) or Flutter if that speeds things up. A lightweight backend—Firebase, Supabase, or even Google Sheets API—works as long as data sync is reliable in low-signal areas. Deliverables • Android APK and source code • Secure, role-based login • Data-entry form with validation • Cloud backend with live sync • Web or in-app Adm...

My UPI integration consistently throws a transaction failure right in the middle of the OTP authentication step. The flow reaches the OTP prompt, the user enters the code, and instead of receiving the success callback I get an error response from the bank gateway. What I need from you: • Analyse the existing Android (Kotlin) code that handles the UPI intent and callback. • Review the request payloads, headers, and checksum generation to confirm they match NPCI specs for OTP authentication. • Trace logs from initiation through to the failure response, identify the exact point and reason for the rejection, then propose and implement a fix. • Provide a concise report summarising root cause, code changes, and a simple test plan so I can replicate the succe...

...the update through the Play Console. • Swap in updated screenshots that better showcase new builds or seasonal themes. • Edit or rewrite the store listing text for promotions, keyword tweaks, or policy compliance. • Roll out light feature updates inside the APK when needed—think minor UI improvements or hooking in a small new function. You should already be comfortable with Android Studio, Kotlin/Java, and the Google Play release process (including asset requirements and rollout tracks). Speed matters; I’m looking for someone I can ping and, ideally within a day or two, see the update live or at least in review. When you reply, let me know: 1. How you normally handle quick asset swaps without risking version code mishaps. 2. Your turnaround ...

We are looking for an experienced Android developer to build a high-quality communication app inspired by the platform Requirements - Strong Android development experience with Kotlin - Experience with real-time messaging or communication apps - Modern UI/UX implementation - API and backend integration experience - Firebase and push notification knowledge - Clean, scalable, and production-ready coding practices - Experience publishing apps to Google Play Store Preferred - Experience with chat, VoIP, or video communication apps - Knowledge of WebSocket or - Jetpack Compose experience Responsibilities - Develop and maintain the Android app - Build responsive and modern UI - Integrate backend APIs and real-time features - Optimize app performance and security - Deliver stable produ...

Backend:- Node.js (v18+) MongoDB / Mongoose Redis / BullMQ AWS S3 Storage Agora Voice/Video SDK Android:- Kotlin (Core Logic) Java (Legacy Modules) XML / Material Design UI Client Firebase FCM AWS S3 Native SDK Agora Voice/Video RTC Razorpay Payment SDK check full detail in

I want a lightweight Kotlin-based Android app that lets me test SMS delivery through our own workflow. The interface can stay basic and functional: a single screen for server settings and a task list, another for simple settings where I can type or paste the whitelisted numbers myself. Typical flow I have in mind • I key in the server’s IP and port. • The app calls my REST endpoint (Retrofit / OkHttp) and pulls any pending test messages. • Each task shows the destination number and the body text. • Tapping Send launches the system SMS composer with ACTION_SENDTO—no background sending at all. • When I come back, I tap Sent, Skipped, or Failed and the app pushes that status back through another REST call. Login is not strictly require...

...Code (Important) We will provide: - PDF explaining the tracking system (AI + smoothing logic) - Setup guide from previous developer - Existing project files The system includes: - Face tracking (MediaPipe) - Body tracking fallback (YOLO) - Smooth camera motion (PID control) You will need to: - Review and adapt this code for the new webcam input Preferred Tech Stack Developers may use: - Java or Kotlin (Android Studio) - Experience with: - Camera2 API OR USB (UVC) camera integration - MediaPipe / TensorFlow Lite (preferred) - OpenCV (bonus) Important Notes - No backend required - No database required - Focus is on camera + UI + integration - Clean, stable, working prototype is priority (not perfect UI polish)...

...developer who can take it from idea to Play-Store-ready release. The job covers everything: designing the front-end interface users will interact with, building the back-end services the app calls on, and wiring the two together so the experience feels fast, stable, and intuitive. Because it is a utility tool, the core feature set is compact but performance-critical. I need clean, maintainable code (Kotlin or Java on the client is fine; the server side can be Node, Python, Go—whatever you’re most productive in as long as it is well-documented). You’ll set up the database, create any required APIs, implement basic analytics, and prepare a simple admin panel for configuration and log viewing. Deliverables: • Fully functional Android APK with source code &bu...

...developer who can take it from idea to Play-Store-ready release. The job covers everything: designing the front-end interface users will interact with, building the back-end services the app calls on, and wiring the two together so the experience feels fast, stable, and intuitive. Because it is a utility tool, the core feature set is compact but performance-critical. I need clean, maintainable code (Kotlin or Java on the client is fine; the server side can be Node, Python, Go—whatever you’re most productive in as long as it is well-documented). You’ll set up the database, create any required APIs, implement basic analytics, and prepare a simple admin panel for configuration and log viewing. Deliverables: • Fully functional Android APK with source code &bu...

...be refreshed to match our new brand palette (assets will be provided). Second, performance: cold-start time must drop noticeably, in-app transitions should feel snappier, and background streaming needs to consume less battery. I’m also seeing sporadic crash reports from TestFlight and Google Play Console that I want brought down to near-zero. You’re free to work in native Swift/Objective-C and Kotlin/Java or a shared layer such as Flutter/React Native—whichever lets you hit these goals without rewriting the whole codebase. Instrumentation with Firebase Crashlytics or a similar tool is expected so we can verify improvements. Acceptance will be based on: • Average launch time under two seconds on mid-range devices • Crash-free rate ≥ 99 % over ...

...User (Library Member) will be able to register/login, search and view books, request or borrow books, view issued books and borrowing history, and receive notifications/reminders in future updates. The project requires development of a modern Android application with secure authentication, role-based dashboards, API integration, responsive UI, and scalable architecture. Preferred technologies: Kotlin for Android development Python with FastAPI for backend APIs PostgreSQL for database management Core functionality includes: Secure Login/Register system JWT Authentication Role-based authorization Multi-library support Book management system Book issue/return tracking User/member management Search and filtering Transaction history Library-specific data isolation The backend sh...

I’m building a mobile application that helps professionals discover and connect with potential colleagues. The app must run natively on both iOS and Android, so a cross-platform approach such as Flutter, React Native or Kotlin Multiplatform makes sense, but I’m open to your expert recommendation as long as the final result is smooth on each store. Core experience Users should be able to create rich profiles with photos, short bios and work-related details. From there, other members need to search and filter those profiles by role, location or skill set, then start a private conversation. Real-time or near real-time messaging is essential, and I want push notifications to alert users whenever they receive a new message or a relevant match. Key deliverables • iO...

I already have the open-source code and official documentation for TTLock (see ). I now need a specialist who can turn that code into a production-ready mobile application for both iOS and Android. The ...verified on real devices • Source code pushed to my private repo with build instructions • Store listings prepared and submissions accepted by Apple and Google Acceptance will be based on successful pairing and e-key operations on both platforms and the apps passing store review without critical issues. If the documentation checks out for you and you are confident with Swift/Objective-C or Kotlin/Java (cross-platform frameworks are fine too as long as every TTLock function stays reliable), let’s get started.

...both iOS and Android. Core screens will include a dashboard, task manager, reminders with push notifications, and cloud-sync so users can pick up where they left off on any device. I will supply wireframes outlining each view and a feature map that defines user flows; your job is to translate these into a polished, maintainable codebase. Feel free to suggest the most efficient stack—Swift + Kotlin, Flutter, or React Native—as long as performance and long-term maintainability stay front-of-mind. Deliverables • Full source code with clear comments • Build instructions and CI/CD setup so I can compile both apps locally • A TestFlight / Google Play internal track build for hands-on review • Brief hand-off document detailing architecture, ...

I'm looking for an experienced Android app developer to create a utility/tool mobile application. The app should be user-friendly, efficient, and functional. Ideal Skills and Experience: - Proven experience in Android app development - Strong knowledge of Java/Kotlin - Experience with Android Studio and relevant development tools - Ability to design intuitive user interfaces - Familiarity with API integration - Excellent problem-solving skills - Strong communication skills Please provide samples of previous work and a brief project plan.

...for a competent Android developer to turn my concept for a new utility app into a polished, Play-Store-ready product. The core goal is straightforward: create an intuitive tool that solves a specific everyday problem for users on Android devices. Here’s what I need: • Full Android app development—from initial architecture through to final APK and Play Store submission. • Clean, well-documented Kotlin or Java code (whichever you’re most comfortable with) stored in a Git repository I can access. • A lightweight, modern UI that follows Material Design guidelines and adapts gracefully across common phone and tablet sizes. • Basic analytics and crash-reporting integration (Firebase preferred) so I can monitor usage and stability after launch. &bu...

I’m building a cross-platform mobile app whose main value is productivity through smarter commuting. The core of the product is a ride-sharing experience built specifically...and release process. Acceptance Criteria • Carpool requests and offers can be created, matched, and confirmed without crashes on current iOS and Android versions. • Real-time location updates refresh smoothly under typical 4G conditions. • All personal data is transmitted over HTTPS and stored securely (no hard-coded keys). Tech stack is flexible: Flutter, React Native, or fully native Swift + Kotlin are all fine as long as you can meet the performance and UX goals above. If this sounds like a challenge you’re ready to take on, let’s talk timelines and milestones so we can ge...

...streamlined order-entry and payment screen plus a read-only view of their own sales history. If you can keep the architecture flexible enough to add a Cashier or Customer role later, that’s a bonus. Authentication should be simple and secure with email-and-password login. No biometric sign-in is required for the first release, so the UI can stay lean. I’m happy for you to use Android Studio with either Kotlin or Java, and a local SQLite database is fine for offline scenarios, though cloud sync through Firebase (or a comparable backend you prefer) would be helpful for multi-device access. Deliverables I’ll review for acceptance: • APK for test install • Complete, well-commented source code • Brief setup document covering build steps and an...

...Switching from one server profile to another refreshes channel lists and VOD catalogs in under five seconds or can be viewed simultaniously 3. EPG data aligns to the correct time zone and updates automatically every 12 hours. 4. Tokens expire as expected; the app must fetch and apply a fresh token silently without logging the viewer out. 5. Source compiles without errors in Android Studio (Kotlin/Java) and Xcode (Swift/Objective-C). If you have proven experience with ExoPlayer, AVPlayer, or similar streaming SDKs and can meet the above acceptance tests, let’s discuss timelines and milestones. Must Haves: Subtitles linkage to online subtitles or equivalent Epg offset options (for time zones) Multi server support Favourites Custom groups Ability to remove unwanted ...

I need a complete digital presence for my beauty salon that feels fresh, modern, and intuitive. The project covers a responsive website plus native-like mobile apps for both iOS and Android, all conne...can add products, update prices, open or close time slots, and view sales/booking reports. • Secure checkout integrated with major cards and Apple/Google Pay, plus a guest-checkout option. • Apps delivered to App Store and Google Play under my developer accounts. Please outline your preferred tech stack for the site (e.g., React, Vue, or similar) and for the cross-platform apps (native Swift/Kotlin, Flutter, React Native, etc.), along with estimated milestones for design, development, QA, and deployment. If you have prior work in the beauty, spa, or retail space, I&rsq...

...successfully, but the flow breaks right after the user pays: the app neither returns to the appropriate page nor unlocks the purchased course content. I need an experienced Android developer who understands Razorpay’s callback/webhook logic and Activity or Fragment navigation to jump in, trace the problem, and ship a quick, reliable fix. You’ll be working with the existing Replit-hosted codebase (Kotlin/Java mix) and the live Play-Store build. What I expect from you • Diagnose why the Razorpay success callback is not being consumed correctly. • Restore the intended navigation so users land back on the main screen. • Ensure the purchase flag is set and the premium features become available immediately after payment. • Supply a patched bu...

I’m ready to build a full-featured outstation cab booking applica...payments (cards, UPI, wallets—whatever gateway you recommend) • A multi-city booking flow that lets users choose origin, destination, and trip type without friction Please attach a detailed project proposal outlining your recommended tech stack, milestone plan, estimated timeline, and any similar products you’ve shipped. If you have thoughts on using a shared codebase (Flutter, React Native, Kotlin Multiplatform, etc.) versus two separate native builds, include that rationale as well. I’ll review proposals based on clarity of approach, realism of schedule, and how confidently you address scaling, driver/rider data security, and ongoing maintenance. Looking forward to seeing how you...

...mobile build—designing the screens, coding the native functionality, integrating any required APIs or device features, and guiding the project through App Store and Play Store submission. Because this is a green-field project, a clear roadmap matters more to me than a long résumé. Please attach a detailed project proposal that shows the milestones you’d follow, the tech stack you recommend (Swift / Kotlin, Flutter, React Native, or another cross-platform route—convince me), an outline of the core features, and an estimated delivery schedule. Deliverables • Universal utility app fully functional on current iOS and Android versions • Clean, well-commented source code in a shared Git repository • Brief setup & build instructio...

...Acceptance criteria • App installs from Play Store on Android 9+ and passes Play Protect. • QR codes scan correctly at gate hardware within 300 ms round-trip. • All AFC data is stored AES-256 encrypted at rest and travels over TLS 1.3. • Back-office reports can be exported in CSV and reconcile to within ±0.1 % of device totals. You are free to choose modern but well-supported frameworks; Kotlin with Jetpack Compose on the front end and Spring Boot or Node.js for microservices would fit well, but I’m open if you have a stronger stack in mind. Continuous delivery through GitHub Actions to a staging environment is preferred so we can iterate quickly. If you are based in Mumbai and have shipped similar transit or payment apps before, let&rsq...

I’m ready to commission a brand-new Android application focused on “Writting.” This is a straight mobile app development assignment: a clean, distraction-free space where users can draft, edit, and store text directly on their phones. Scope • Build the app from scratch in Kotlin or Java using Android Studio. • Design an intuitive Material-style interface that scales smoothly across screen sizes. • Core features: create, edit, and save text; basic formatting; share or export files. • Deliver well-commented source code plus an installable AAB/APK that passes Play Console pre-launch checks. Nice-to-haves (let me know what’s feasible) • Markdown support. • Dark/light theme toggle. • Autosave with simple version h...

...recommendations later. • At least one engaging feature typical to entertainment apps—this could be short-form video playback, mini-games, meme generators, or another fun concept you propose. • Integrated ad space or in-app purchase hooks to “cari cuan yg bnyk” right from launch. I will provide quick feedback on wireframes and early APKs so we can iterate fast. Please outline the stack you prefer (Kotlin, Java, Jetpack Compose, etc.) and share samples of any previous Android entertainment projects. The finished deliverable should include: 1. Compilable Android Studio project with clean, well-commented code. 2. One signed release APK ready for Play Console upload. 3. A concise setup/README so I can continue development or hand it to a futur...

...feature: automatic receipt scanning. The camera should capture a receipt, run on-device or cloud OCR, and attach the parsed data to the related task in seconds. I already have rough wireframes and the main user stories mapped out; what’s missing is an experienced mobile developer (or small team) who can turn them into a polished, stores-ready product. Feel free to build in Flutter, React Native, Kotlin/Swift, or another cross-platform stack you’re comfortable with, as long as performance and native camera access stay seamless. Key deliverables • Full source code with clear modular structure • Android & iOS release builds plus testflight / beta tracks • Integrated receipt-scanning flow (camera capture, OCR, data attachment) • Local and...

...social-media app, so polished interactions and smooth performance are non-negotiable. Scope • Translate every screen from Figma into pixel-perfect SwiftUI views and the equivalent Kotlin layouts/components. • Wire up core flows for user profiles, a real-time messaging system, and an infinite-scroll news feed so that I can drop in the back-end API without restructuring the UI code later. • Keep the project modular and well-commented; I’ll be expanding the feature set once the MVP is stable. Deliverables 1. Xcode project using SwiftUI that mirrors the Figma hierarchy. 2. Android Studio project written in Kotlin with matching navigation and styling. 3. Basic stubs or mock services that demonstrate user profile loading, message threads, and f...

...security (encryption in transit and at rest), and Play-Store-ready build are part of the scope. I am open to Google ML Kit, AWS Rekognition, Azure Face API, or a custom TensorFlow Lite model—choose whichever gives the fastest, most reliable response while keeping running costs reasonable. Key deliverables • Interactive Figma mock-ups for every screen and state • Complete Android Studio project (Kotlin preferred) with modular, well-documented code • Cloud backend with authentication, image storage, and AI inference pipeline • Unit/UI tests plus a short setup guide so any developer can build from source • Signed, release-ready APK and Play Console assets Acceptance criteria • Gallery-only upload reliably supports current Android pho...

...cards, Google Pay) • Real-time delivery tracking and push notifications for each status change • Saved addresses, order history, and quick-reorder options • Admin console or lightweight API endpoints so my team can update inventory, prices, and promo codes without touching the codebase Design: modern, friendly UI that feels native to Material You while staying brand-customizable. Tech: Kotlin preferred, but I’m open to well-structured Java. Please leverage best-practice Android architecture (MVVM, Jetpack components) and follow Google’s guidelines for performance and accessibility. Deliverables: 1. High-fidelity Figma (or similar) screens approved before development 2. Complete Android Studio project with readable, documented code 3. APK/Bundl...

...ready to turn my concept into a polished mobile application that runs smoothly on both iOS and Android. I have the core idea and user flow mapped out; what I need now is an experienced developer—or a small team—who can guide the project from wireframes through App Store / Google Play submission. Here’s the support I’m looking for: • Advice on selecting the most suitable tech stack (native Swift/Kotlin, Flutter, React Native—open to your recommendation with clear reasoning on maintainability and performance). • End-to-end development: clean, well-documented code, intuitive UI, and seamless cross-platform behaviour. • Backend selection and setup, whether that’s Firebase, AWS, or a lightweight custom API. • Basic analyti...

I need a skilled developer to create a native Android mobile app written primarily in Kotlin (some legacy Java snippets may be reused if it speeds things up). The goal is to move from a clean slate to a fully tested, Play-Store-ready APK. I will supply wireframes, brand assets, and an outline of key screens; you will translate those into a responsive UI, connect any required APIs, and make sure the build meets current Android SDK guidelines. Key deliverables • Complete Android Studio project with readable, well-commented source code • Signed release APK/AAB plus a debug build for testing • Brief setup and build document so I can compile future versions myself I value clean architecture (MVVM or similar), Jetpack libraries, and thoughtful error handling. If you...

Mobile Developer - Food and Beverage App About the Project It is a coffee & snack shop ordering app built with Kotlin Multiplatform (KMP). The app supports multiple branches, Google/Apple sign-in, menu browsing, and order pickup. The core architecture and backend infrastructure are already in place - I'm now looking for a developer to help me finish the product with a strong focus on redefining the UX/UI across both platforms. You'll be working alongside me on GitHub tickets that I create using claude code/codex. Expect daily collaboration over Slack, end-to-end testing of your own work. Tech Stack Shared (Kotlin Multiplatform) - Kotlin 2.1.0 - Ktor 3.0.3 (HTTP) - SQLDelight 2.0.2 (local cache) - Koin 4.0.0 (DI) - kotlinx-coroutines, kotlinx-datetim...

...automatically without manual updates. 3. Chats and meetings are end-to-end encrypted and comply with platform guidelines. 4. Users can complete a lesson, take a quiz, earn a badge and see progress reflected instantly. 5. Store submissions pass Google Play and App Store review on first attempt. Please quote realistic timelines and outline any preferred tech stack (e.g., Flutter, React Native, Swift/Kotlin). I will provide UI wireframes and brand assets once development begins....

I’m building a VPN service focused solely on secure internet browsing for users in Pakistan, and I need an Android-only app that makes privacy effortless. The core goals are end-to-end encryption, leak-free tunneling, and a clean, intuitive interface that anyone can navigate without a learning curve. What I expect from you: • An Android application (Kotlin or Java) that connects to my existing VPN servers via OpenVPN or WireGuard with AES-256 encryption. • A streamlined UI: one-tap connect, clear status indicators, and minimal settings for speed, protocol, and auto-connect on boot. • Built-in DNS and IPv6 leak protection plus a kill switch. • Lightweight codebase, Play-Store-ready, with branded icons and onboarding screens. • Source code, ke...

...fully-fledged Android application and need the entire build handled from scratch. My wireframes outline a familiar flow—sign-up, editable profiles, a content feed, media posting, follow/unfollow, real-time chat and push notifications. Your task is to transform those ideas into a polished, store-ready product. You’ll own everything from the UI (Material-Design-aligned) through front-end code in Kotlin or Java inside Android Studio, to a secure back end (Firebase, Supabase or a stack you recommend). Clean architecture, clear documentation and unit-tested modules are a must because I’ll be maintaining and scaling the codebase post-launch. Deliverables • Complete Android Studio project with well-commented source code • Signed, release-ready APK and k...

...the customer’s shipping details, • generate clear transfer instructions and an order reference, • wait for our server to confirm receipt of funds before marking the sale as paid. Everything else in the storefront—product data, pricing, order status—will be pulled from my existing API, so the app simply needs to display that information and keep it in sync. You are free to build in Java or Kotlin with Android Studio; just make sure the code is well-structured and easy for another developer to continue later. Deliverables • Full Android Studio project with source • Signed release-ready APK • Quick setup / build guide I’ll test by installing the APK, placing a test order, and confirming that the status updates automatic...

...be installed when required. Core requirements • Device-owner / Android Enterprise APIs for true kiosk enforcement • Auto-start at boot and automatic relaunch if closed or the device reboots • Block factory reset, settings access, and app removal by standard users • Built with Flutter; native Kotlin plugins allowed for low-level device policy control • Clean, responsive UI; I will provide brand assets once the framework is in place Deliverables 1. Full Flutter source code with Kotlin integrations 2. Signed APK / AAB ready for direct device installation 3. Setup script or clear instructions to enroll a fresh device into kiosk mode 4. Brief admin guide explaining how to whitelist additional apps through Google Play Acceptance crit...

...Timeline & cost Kindly include a realistic delivery schedule (with milestone breakdown) and your estimated cost when you reply. An affordable approach is important, but reliability and quality come first. When you respond 1. Briefly outline similar education or community apps you’ve launched. 2. State the technology stack you plan to use (e.g., Flutter + Firebase, React Native + Node + MongoDB, Kotlin/Swift natively, etc.). 3. Confirm you can meet the documentation, testing, and hand-over requirements. 4. Provide a clear delivery date and any phased release ideas you suggest. I’m ready to start as soon as I find the right fit and will be available for quick feedback throughout the build....

need to record audio, save the file after 2 minutes, create new file, save the file after 2 minutes and so on. must run only in background. need to use Android Studio and Java. Not Kotlin

...conversations inside the app. To make that happen we will need: • Secure user registration and login • A clean job-listing / application flow • Fast, reliable in-app messaging Your role is to drive the entire product cycle—architecture, coding, deployment, and ongoing optimisation—while we refine market fit together. I’m open to the tech stack you are most productive in (Flutter, React Native, Kotlin, Swift, Node, Firebase, AWS, etc. are all fine) as long as it can scale and stay maintainable. If partnering on a product from day one excites you, send a detailed proposal explaining: • How you would structure the build and timeline • Previous apps that show you can deliver similar functionality • Any thoughts on monetisatio...

I need a lightweight but polished Android application that can turn a tablet into an on-site kiosk for my firm. When the device boots the app should launch directly to a branded home screen ...folder, without rebuilding the APK. Core expectations • Full-screen, locked-down kiosk mode with exit password • Clean UI that scales to 8–12″ tablets in portrait and landscape • Local caching and smart file handling so the total payload never exceeds 4 GB • Simple in-app editor or back-office screen to rename tabs, replace media, and update links • Source code (Android Studio, Java/Kotlin) and installable APK delivered at project hand-off Acceptance is based on smooth offline playback, flawless switching between tabs, and quick content refres...

...constraints ### Sensor Fusion Using: * Accelerometer * Gyroscope * Compass * Step detector Includes: * Dead reckoning * Continuous indoor tracking * Relocalization logic ### AR Navigation * AR arrows * Waypoint indicators * Turn guidance * Coordinate transformation * Projection engine * Screen-space overlay rendering ## Required Skills Must have experience with: * Android native development (Kotlin) * CameraX * OpenCV * ARCore * Sensor fusion * Real-time tracking systems * Indoor navigation * Computer vision * Graph/pathfinding algorithms * SQLite / local databases * Performance optimization Preferred: * Experience with SLAM * PnP pose estimation * ML model integration * TensorFlow Lite / ONNX * Navigation engines * 3D math & coordinate systems ## Deliverables *...

I’m ready to turn a new e-commerce concept into a polished mobile experience that runs smoothly on both iOS...(email, social, and OTP options) • Fast product search with category and attribute filters • Reliable payment-gateway integration that supports cards, wallets, and local methods Beyond those essentials, I’ll need a clean product catalogue UI, a lightweight cart and checkout flow, and basic order-tracking screens. I’m open to React Native or Flutter if it keeps one codebase, but native Swift/Kotlin proposals are welcome so long as feature parity is guaranteed. Please outline your preferred tech stack, any relevant live apps, a realistic timeline, and how you’ll handle testing, store deployment, and a brief hand-off session so I can ma...

I’m setting up a ded...for iOS and Android, including push notifications for order status. • A streamlined admin panel where restaurant partners can update menu items, set availability, and view live order queues. • Integrated payment gateway and basic promo-code engine. • GPS-driven driver tracker so customers can watch their order on the map. I’m open to whichever tech stack you prefer—React, Flutter, Swift/Kotlin, Laravel, Node—so long as the end result is fast, secure, and easy to maintain. API documentation, clean source code, and deployment support to App Store, Play Store, and my hosting environment are all part of the hand-off. If this sounds like your wheelhouse, let’s talk about milestones and timelines so we can start d...

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need to record audio, save the file after 2 minutes, create new file, save the file after 2 minutes and so on. must run only in background. need to use Android Studio and Java. Not Kotlin

I need an Android game built from the ground up. The core idea is already sketched, but I want your expertise to refine the gameplay loop, choose the most suitable engine (Unity, Godot, or native Kotlin), and transform the concept into a smooth, polished release. Here’s how I picture our collaboration: • Prototype: a basic but playable build that lets us validate mechanics and controls. • Beta: feature-complete version with art, sound, leaderboards, and monetisation hooks (ads or in-app purchases, whichever you recommend). • Launch: final APK/AAB, Play Store listing assets, and a clean hand-over of documented source code in a Git repository. Quality matters; the code must be well-commented, optimised for a wide range of Android devices, and ready for futur...

I need a straightforward Android application that functions as an OTP panel. The core requirement is reliable OTP generation that appears directly inside the app—there’s no need for SMS or email delivery. A clean screen where users can tap a button to receive a freshly generated one-time password, along with basic validity timing, is all I’m after. You’re free to build with either Kotlin or Java in Android Studio; just keep the architecture simple, well-commented, and secure. Deliverables: • Signed APK for testing and a Play-ready build • Complete, tidy source code with build instructions • Brief read-me explaining the OTP algorithm and any libraries used I’ll test by confirming the OTP generates instantly, expires as inten...