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    2,000 webphone java jobs found

    ...social-media concept into a fully-fledged Android application and need a developer who can own the build end-to-end. The goal is an engaging platform where users create profiles, share text or images, follow each other, and interact through likes and comments—all delivered with a clean Material Design interface and smooth performance on modern Android devices. You’re free to choose Kotlin or Java, but the code must be written in Android Studio, clearly documented, and structured for easy hand-off. For authentication and cloud storage I’m leaning toward Firebase, yet I’m open to your technical suggestions if they simplify scaling and keep costs reasonable. Security, responsive layouts, and thorough testing are essential; I’d like the first APK to b...

    $476 Average bid
    $476 Avg Bid
    33 bids
    Simple Java 2D game
    6 days left
    Verified

    I want a lightweight 2-dimensional game written entirely in Java where the sole goal is to move around a small map and collect scattered items. No combat, no elaborate quests—just a clean, responsive “grab-everything-you-see” experience that can be finished in a few short minutes. The core mechanic is straightforward: a player-controlled character navigates with the keyboard, each pickup increments a counter, and the round ends once every item has been gathered. Beyond that I’m flexible: you can decide whether the collectibles look like coins, gems, or something else, and you can pick whichever graphical approach you’re most comfortable with—simple pixel art, cartoon vectors, or anything that keeps performance smooth. I’m happy with Swing,...

    $38 Average bid
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    12 bids

    I need a reliable UART-based EQ link between a Texas Instruments chipset and an Android device. The goal is straightforward: move data in both directions so my custom Android app can issue real-time control commands and, when required, push or pull compressed audio signals over the same line. Your job is to deliver the Android-side software stack—driver layer, JNI/NDK bridge if necessary, and Java/Kotlin interface—so I can drop the library into my existing project and start talking to the TI part immediately. The link must handle baud-rate negotiation, framing, CRC, and graceful recovery from line noise. For proof, you’ll provide: • Source code and a sample APK that opens the port, sends a command packet, and plays back a short audio frame returned by ...

    $477 Average bid
    $477 Avg Bid
    44 bids

    ...microservices architecture. This engagement is not a small website or a prototype. It is a long-term, enterprise-level platform that will power customer applications, driver operations, admin systems, inventory flows, order lifecycles, payments, and real-time delivery tracking. The backend APIs will be the core foundation of the entire business. The backend system must be developed strictly using Java and the Spring ecosystem (Spring Boot, Spring Security, Spring Data, Spring Cloud where required) and follow a microservices-based architecture. All services will communicate through secure, well-documented REST APIs, using internal JWT-based authentication and industry-standard security practices. We are looking for freelancers who can take ownership of backend services end-to-e...

    $98 Average bid
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    17 bids

    ...DB schema • One-tap PDF creation that mirrors our invoice layout and supports native Android printing/sharing Reports Because “Sales reports” is the only extra feature I selected, the app just needs concise revenue and volume summaries—no inventory or customer modules. Export to CSV or PDF from the report view will keep things flexible. Deliverables - Complete Android Studio project (Java or Kotlin) with all source code - Miracle database scripts or lightweight API/service layer to connect the app - Signed installable APK - Short setup guide and walkthrough video or document Acceptance criteria 1. Invoices created offline sync automatically once a connection is restored. 2. PDF output matches the sample template I will provide. 3....

    $343 Average bid
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    26 bids

    ...configuration, Sysplex tuning, and Coupling Facility management are all part of the daily rhythm here, so deep hands-on experience with each is essential. The role also includes: • Building and validating new IODFs through HCD • Managing DFSMS storage classes and policies • Exercising and documenting Disaster Recovery procedures • Supporting the language stack—PL/I, COBOL, Assembler, REXX, Java for z/OS, node.js, and Python for z/OS—ensuring compilers and run-times remain in sync with OS levels Deliverables will be accepted when: 1. All targeted z/OS and product maintenance is applied cleanly under SMP/E. 2. Updated PARMLIB members and Sysplex settings are performance-tuned and backed by before/after metrics. 3. RACF and related...

    $1116 Average bid
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    55 bids

    I need a skilled Java developer to turn my desktop-application idea into a working program. The core requirement is straightforward: the finished app has to run reliably on Windows and macOS, install easily, and offer a clean, intuitive interface. You are free to pick Swing, JavaFX, or another modern Java UI toolkit as long as the end result feels native and responsive. I will share mock-ups, a concise feature list, and sample data once we start. What I expect back is the complete, well-commented source code plus a packaged executable (JAR or native installer) that passes a quick smoke test on both operating systems. If you’ve built polished desktop tools in Java before, I’d love to see one or two examples along with a brief note on the frameworks you pre...

    $485 Average bid
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    33 bids

    We are looking for a develope...& Quality We expect the code to be neatly organized and professionally written. The project should be easy to understand, with clear separation of different parts of the code. Good naming, readable logic, and modular design are important. The overall structure should show good development practices and make the code easy to maintain. Technology Any programming language is acceptable (Python, Java, JavaScript, etc.) Frameworks can be used, as long as they are well-structured and properly documented Validation Process We will provide an executable (.exe) file to run and check your project The executable will generate a score based on correctness, performance, and code quality If your project scores well and meets all the requirements, we wil...

    $1651 Average bid
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    39 bids

    ...Responsibilities Design, develop, test, and maintain software applications Write clean, well-documented, and efficient code Collaborate with product managers and designers to define requirements Debug, optimize, and improve existing systems Participate in code reviews and ensure best development practices Requirements Proven experience as a Software Engineer or similar role Strong knowledge of Java, Python, JavaScript, or similar languages Experience with frameworks such as React, Node.js, Django, or Spring Familiarity with databases (MySQL, PostgreSQL, MongoDB) Understanding of REST APIs and version control (Git) Ability to work independently and meet deadlines Project Details Project Type: Fixed Price / Hourly Budget: Open to proposals Duration: Short-term with ...

    $280 Average bid
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    49 bids

    ...a brand-new social networking experience that I want to launch first on Android. I already have the core concept mapped out at a high level; what I now need is a developer (or small team) who can guide the idea through design, coding, testing, and publication on Google Play. Here’s what I’m aiming for • A modern Android-native application built with the current stable Android SDK and Kotlin (Java only if you feel strongly). • Clean, responsive UI that feels familiar to social-media users yet distinctive to the brand. • Foundational social features—user sign-up/login, profile creation, posting, feeds, and real-time interactions—implemented securely and scalably. • Cloud-based backend (Firebase, Supabase, AWS, or another sensible...

    $538 Average bid
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    51 bids

    I’m organising a 20-day, fully offline training bootcamp in Bangalore starting the first week of February and I need a seasoned instructor to lead it. The heart of the course is Core Java and Advanced Java, yet I also expect you to weave in data structures, advanced algorithms and regular competitive-coding drills so participants are battle-ready for contests. Beyond the core focus, you should be comfortable touching on Spring / Spring Boot, Hibernate, REST APIs and, time permitting, a quick primer on HTML, CSS, JavaScript or even Angular/React for well-rounded context. Eight-plus years of hands-on experience is ideal—though if you can demonstrate comparable depth and classroom presence, I’m flexible. Here’s what success looks like: • A day-by-...

    $46 Average bid
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    4 bids

    I need an experienced Java Spring Boot professional who can teach an online group of intermediate learners for two hours each day, Monday through Friday. We already have core topics we must hit—dependency injection, RESTful services, Spring Data JPA, security basics—but I also want you to bring your own ideas and sequence so the curriculum is a balanced mix of our requirements and your expert design. The class size is small, the sessions are live, and everything happens remotely, so solid screen-sharing, white-boarding and clear communication skills are essential. Please be ready to: • Follow the fixed weekday schedule without lapses • Share a week-by-week syllabus before we start • Deliver slide decks, code samples and brief recap notes after every ...

    $100 Average bid
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    8 bids

    ...happy with QA, you will publish the build under our existing Play Console listing; testing for usability, stability, and basic security sits with you. Deliverables 1. Signed AAB/APK uploaded to Google Play. 2. Complete, comment-rich Android Studio (or compatible) source code so we can extend it later. 3. Basic deployment and build documentation. Tech stack I am comfortable with Kotlin/Java, Jetpack components, and a lightweight REST or Firebase backend, but feel free to suggest an equivalent approach as long as it meets the requirements above. If you have shipped similar workflow or expense-approval apps before, please mention them when you respond....

    $10 Average bid
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    12 bids

    I need a Java application debugged. The app is not running due to more than 10 compilation errors. Ideal skills and experience: - Strong expertise in Java - Experience with debugging and resolving compilation errors - Familiarity with Java development environments and tools Please provide a clear plan and estimated timeline.

    $465 Average bid
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    136 bids

    ...Design database schema (PostgreSQL preferred) • Define REST API contracts (OpenAPI preferred) • Security design: OAuth2/JWT, RBAC, encryption, audit logs • Event-driven design (Kafka or equivalent) for notifications/workflows • AWS architecture recommendation (ECS/EKS, RDS, S3, Redis, OpenSearch) • Non-functional requirements: scalability, cost optimization, monitoring/logging Preferred Tech Stack: • Java / Spring Boot • PostgreSQL, Redis • Kafka (or event-driven equivalent) • AWS (ECS/EKS, RDS, S3) • React or Angular Deliverables: • Architecture diagram(s) • HLD + LLD documents • Data model (ER diagram) • API spec (OpenAPI/Swagger) • Deployment architecture (AWS) • Security & privacy model •...

    $518 Average bid
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    78 bids

    We are looking for a Java / libGDX Game Developer to implement a 2D top-down farming game called Valley Day, inspired by cozy games such as Stardew Valley. The project is based on a provided code skeleton, and the developer is expected to fully implement the game according to a detailed project specification. The goal is to deliver a fully functional, playable game that strictly follows the given requirements. Responsibilities Develop a 2D top-down game using Java and libGDX Implement dynamic map loading from .properties files Build and integrate core gameplay mechanics, including: Indestructible fences and destructible debris Crop planting, multi-stage growth, harvesting, and rotting mechanics Daylight countdown timer that determines win/lose conditions Wildlife vi...

    $115 Average bid
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    18 bids

    ...*Share image (optional) *AdMob integration (Banner + Interstitial) What Is NOT Required (Very Important) *No login / signup *No user profiles *No image upload *No paid images / purchases *No cart / checkout *No admin panel *No backend development The app will only consume free images from my existing website via public API / JSON feed (read-only). Technical Requirements *Android (Kotlin or Java) *Clean, modern UI (Unsplash-style) *Grid-based image layout *Glide / Picasso for image loading *Pagination / infinite scroll *AdMob policy-compliant implementation *Play Store–ready build Deliverables *Full Android source code *APK / AAB file *AdMob fully integrated *Basic setup documentation...

    $563 Average bid
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    56 bids

    I need a New Junior Level Developer from Pakistan. I need at low budget work I need work for long term

    $3 / hr Average bid
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    13 bids

    ...where they can place orders. For rest of all it is only having display or we can say catalogue option. Data entered in app from our side should be Excel Based so it is easy to update and addition in app and it should also having user Analytics dashboard where we can find which items are more searched etc for our understanding and study. I’m open to either two native builds (Swift for iOS, Kotlin/Java for Android) or a single cross-platform codebase using Flutter or React Native—as long as the final binaries meet App Store and Google Play submission standards. Please tell me which approach you recommend, why, and how you’ll handle future feature expansion. Deliverables • Fully functional iOS and Android apps including search capability • Sourc...

    $167 Average bid
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    44 bids
    Minecraft Custom Items Design
    5 days left
    Verified

    ...enchanted trinkets, or similar) I will define the attribute myself; I just need the 3D model and texture with the item ID. The item should be able to be imported to the Oraxen plugin, which is compatible with the server. You can work in the format you’re most comfortable with—datapack, resource pack with Iris, or complementary shader compatible—so long as the final files drop straight into a Java Edition server and function cleanly without manual tweaking. Acceptance criteria: 1. All models/textures at 16×16 or 32×32 resolution, with consistent style across the set. 2. Each item is registered and spawnable with clear IDs. 3. Zero console errors on load; items appear and behave as described. 4. A quick readme that explains installation and a...

    $143 Average bid
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    32 bids

    I’m building a custom Android application whose entire business logic will flow through remote APIs, and I need someone who can own both sides of that interaction. On the mobile front, you’ll craft a clean, responsive Android app (Java ) that consumes the endpoints I provide. On the tooling front, I rely on POSTMAN for every stage of the back-end integration, so your day-to-day will include importing the collection, refining environments, and, most importantly, running the automated test suites inside Postman to make sure each call performs exactly as expected. The scope is straightforward: create the app screens, hook them up to the API, then validate the whole flow by executing and, where needed, extending my existing Postman tests. If you’re comfortable living ...

    $107 Average bid
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    38 bids

    ...engine: cleanly separated services, tenant-aware data handling, robust auth, and an architecture that can welcome new feature modules without refactoring the core. You’ll be shaping everything from the database schema to the API layer and background jobs. Tech stack is flexible; the brief questionnaire captured “SaaS” rather than a fixed language, so I’m open to whichever stack—Node.js, Python, or Java—you can justify for long-term maintainability and scale. When you respond, focus on your direct experience building similarly modular or multi-tenant systems: what you built, the challenges you solved, and how the product is performing in production. Code samples or repo links where permissible are appreciated. Key deliverables: • A deplo...

    $421 Average bid
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    166 bids

    I’m looking for a developer who can take my core idea—currently summarised only as “Aku inggin 100”—and turn it into a functioning Android application. The concept is clear to me, but I need your expertise to shape the user flow, design the screens, and code the complete app so it runs smoothly on recent Android versions. Here’s what I already know: • Platform is strictly Android (Java / Kotlin or a modern cross-platform stack that compiles natively for Android is fine). • The main goal is to deliver a stable, production-ready APK that can be uploaded to Google Play when we’re done. I’ll provide the detailed feature list, wireframes, and any required assets once we kick off. You’ll help me refine the technical appro...

    $605 Average bid
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    76 bids

    I'm seeking a talented Minecraft mod developer to create a unique mod that allows players' spears to evolve into better materials as they eliminate opponents. (ex: kill 3 players with iron = copper kill 6 more players to get diamond) Key Requirements: - ...spears to evolve into better materials as they eliminate opponents. (ex: kill 3 players with iron = copper kill 6 more players to get diamond) Key Requirements: - Spear evolution based on player kills (e.g., stone -> iron -> copper -> diamond -> netherite) - Integration with existing game mechanics - Balance to ensure fair gameplay Ideal Skills: - Experience with Minecraft modding - Proficiency in Java - Strong understanding of Minecraft mechanics and balance Please provide examples of previous work and a...

    $22 Average bid
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    30 bids

    JavaScript API & Automation Specialist (Agencies Only) NOTE: * AGENCIES ONLY * This is a deliberately small, low-risk project. The agency that proves speed, precision, and reliability here will be shortlisted first for larger-scale, ongoing automation projects already queued. I am looking for a professional IT Agency to run a very small and simple batch-automation project. This project involves creating and setting up 400 email accounts across 400 different domains. I already have the JavaScript code created for you; your job is to run the scripts, manage the APIs, and ensure quality control. Project Action Items (Sequence) You will run JavaScript batches to complete the following tasks: 1. Batch Email Creation (MXroute API): Run the script to create 400 email accounts and dom...

    $427 Average bid
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    83 bids

    ...Snowboy-style approaches, or a custom on-device neural net are all fine so long as they run fully offline and do not require cloud calls. The only hard requirement is that the recognition word be delivered in neutral Latin-American Spanish pronunciation and not default to English phonemes. Deliverables: • compiled library ready to drop into any Android Studio project (minSdk 23) • Kotlin or Java sample app showing start/stop, permission handling, and the callback in action • clear README explaining model training steps so I can swap in a new keyword later if needed If you already have a Spanish dataset or a proven keyword spotter, mention it; otherwise, outline how you’ll collect or synthesise training data. I’ll test by running the demo on ...

    $467 Average bid
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    76 bids

    I want a clean, reliable Android application that lets my users execute share tra...credentials and trade data have to travel over encrypted connections, and sensitive information should never be stored in plain text on the device. If you have experience integrating with broker APIs or FIX/REST gateways, let me know, as that will help us go live faster. Deliverables • Fully functional Android APK with trade execution and charting • Clean, well-commented source code (Kotlin or Java) • Brief setup document so I can compile, sign, and publish the app myself A short prototype will be the first milestone; once that flow is approved we can flesh out the UI and polish the chart. If this goes well, there is room to expand into indicators, watchlists, or even an iO...

    $105 Average bid
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    16 bids

    Job Title: Mobile Application Deve...Provide ongoing maintenance and bug fixes Required Features User registration & login Course listing & course details Class booking system Notifications (class reminders, updates) Payment integration (if required) Contact & support section Admin/backend integration Required Skills & Qualifications Proven experience in mobile app development Knowledge of Flutter / React Native / Android (Java/Kotlin) / iOS (Swift) Experience with API integration Familiarity with UI/UX best practices Experience in educational or booking-based apps is a plus Ability to deliver projects on time Nice to Have Experience integrating payment gateways Knowledge of backend technologies (Node.js, Firebase, etc.) Experience syncing mobile a...

    $231 Average bid
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    58 bids

    My project centres on an advanced client-side modification for Minecraft 1.21 that introduces brand-new items and blocks, bespoke GUI screens, and deeper gameplay mechanics—plus a few surprise features still on the roadmap. Code must be written in Kotlin and Java, follow clear architectural patterns, and stay lean enough to keep frame times smooth even during heavy packet traffic. Because the client will also interact with Velocity, BungeeCord, or Waterfall proxies, I need someone who is comfortable tracing packets end-to-end, optimising network calls, and squeezing every last millisecond out of performance-critical paths. A rock-solid grasp of Minecraft’s rendering and input pipelines is equally important, as several custom interfaces push well beyond vanilla constrain...

    $105 Average bid
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    2 bids

    I need a New Junior Level Developer from Pakistan. I need at low budget work I need work for long term

    $9 / hr Average bid
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    12 bids

    I’m ready to turn my store concept into a dedicated Android application and need a developer who can guide the build from first commit to Google Play release. This project is strictly for Android, not cross-platform, so deep knowledge of Android Studio, Kotlin/Java, and current Material Design guidelines is essential. The app’s core mission is straightforward: allow users to browse products, add them to a cart, and check out securely. I already have a basic product list and brand assets; you’ll help translate those into a smooth shopping experience with clean navigation, responsive layouts, and a payment flow that meets PCI standards. Key delivery points: • Functional Android app (APK + Play Console-ready bundle) • Source code with clear, maintainable...

    $18 / hr Average bid
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    84 bids

    ...per hour. Daily voice calls are a core part of our routine, so C1+ level spoken English is essential; you’ll be talking through architecture, pair-debugging and raising questions every day. Your toolbox on the frontend must already include React and Angular. If you also enjoy the occasional Vue.js task, that’s a pleasant bonus. On the server side we run services written mainly in Python and Java, so you should feel at home designing RESTful APIs, writing unit tests and deploying through common CI/CD pipelines for at least one of those languages. Data lives in MySQL, PostgreSQL and MongoDB, and you’ll be expected to model schemas, tune queries and handle migrations confidently. Most of the current team sits in Europe, while I’m in Canada, so an overla...

    $33 / hr Average bid
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    268 bids

    Required Skills: Strong experience with OSIsoft PI Vision JavaScript, HTML5, CSS3 Understanding of PI AF, PI Data Archive, and industrial data workflows Experience building custom visual components or widgets Good communication skills and ability to translate operational needs into visuals

    $162 Average bid
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    80 bids

    I need a clean, production-ready Android application built from the ground up. The core scope is straightforward: design an intuitive UI, develop the full codebase, and implement secure user authentication so people can sign up, log in, and manage their session reliably. The ideal flow is: wireframes → polished UI mock-ups → iterative development in Android Studio (Java or Kotlin) → unit/UI testing → a signed APK and readable source code in a Git repository. Feel free to leverage Firebase Auth, OAuth2, or another standards-compliant solution for the login layer as long as it keeps credentials safe and supports email-password plus social sign-ins. Right now I only need the Android version; however, structuring the project so it can later be extended to iOS&mdash...

    $16 Average bid
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    I'm seeking an experienced recruiter to help me hire junior full-stack developers from Europe. The ideal candidates should be proficient in Python/Django and Java/Spring. Key Requirements: - Recruiters with a strong network in the European tech market. - Experience in sourcing and vetting junior-level software developers. - Ability to provide a shortlist of qualified candidates within a specified timeframe. Ideal Skills and Experience: - Background in tech recruitment. - Familiarity with European labor laws and hiring practices. - Excellent communication and negotiation skills. Please share your approach and relevant experience.

    $444 Average bid
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    66 bids

    ...server synchronization. An existing APK will be shared only for functional reference. This is not a beginner or learning project. Apply only if you have proven experience with offline-first mobile apps and GPS capture. Preferred Tech Stack Mobile App Flutter (Android first) SQLite (Drift / Floor) Riverpod (or equivalent) Flutter Intl / ARB for localization Platform Channels to reuse existing Java code for: Printing WhatsApp messaging Backend Supabase (PostgreSQL, Auth, Storage, Edge Functions) Relational schema (mandatory) DevOps GitHub (repository owned by us) GitHub Actions for CI/CD Daily APK builds If you propose an alternative stack, you must justify offline sync and relational geo-hierarchy support. User Roles and Features Super Admin Create and manage...

    $565 Average bid
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    85 bids

    ...parallel tabs “If my current approach is incorrect, I would like to understand the correct method to handle this system. If you have the expertise, please guide me or help me build a fully functional bot script.” Skills Required Playwright / Puppeteer / Selenium (CDP mode) Strong understanding of HTTP/2, redirects, cookies, CSRF Experience with anti-bot bypasses Experience with Wicket / Java server-side frameworks --- Only Experienced Developers This is not a simple Selenium clicker job. Only message if you have real experience with strict session-based booking systems. Provide: past work samples your approach to solving redirect-based session recreation if u have any other idea in accesing the site while high demand u can implement that also...

    $273 Average bid
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    27 bids

    Hello Pranav, I am Hiring you for this problem which is already you fix. Please share the code here.

    $55 Average bid
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    1 bids
    Android PDF Scanner & Manager
    4 days left
    Verified

    ...created files for quick access • Open, share, delete, rename, and automatically timestamp every PDF, storing them all inside a dedicated app folder • Merge several PDFs, compress file size, convert pages to images, reorder pages, and remove selected pages as needed • Provide a fast filename search that scans the dedicated folder Scope and expectations – Target platform: Android only (Kotlin or Java—your choice). – UI: clean, modern, feature-rich Material design components; no login or sign-up screens. – All heavy lifting (scanning, manipulation, compression) must be handled on-device; no external servers. – Deliver production-ready source code, clearly documented, with build instructions. – Before hand-off, supply ...

    $105 Average bid
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    30 bids

    I need a New Junior Level Developer from Pakistan. I need at low budget work I need work for long term

    $7 / hr Average bid
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    19 bids

    ...use on the site. • A smooth product catalogue with search, filtering and detailed product pages, followed by an in-app cart and checkout flow that mirrors the website. • Built-in customer-support chat so users can message us in real time while browsing or after a purchase. I will provide API endpoints, database access and brand assets. The code should be written in native Android (Kotlin or Java in Android Studio) and handed over fully documented so I can maintain it internally after launch. Please include push-notification set-up, basic analytics hooks and a short README explaining build steps and environment variables. Acceptance criteria: 1. Users can log in with existing Aloquence credentials and see their past orders. 2. Product listings, stock and pricin...

    $15834 Average bid
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    154 bids

    ...on modern Android devices. My priorities are: • Smooth product browsing with clear categories, search, and filters • A dependable cart and checkout process tied to a popular payment gateway • Secure user authentication and profile management • Basic admin interface (web or in-app) where I can add, edit, or retire products, photos, prices, and stock levels • Clean, maintainable Kotlin/Java code and well-commented project files Deliverables 1. Production-ready APK plus signed release build 2. Full Android Studio source code with build instructions 3. Brief hand-off document covering environment setup, key libraries, and how to add new products If you have existing components or templates that speed things up, great—as long as the fi...

    $168 Average bid
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    37 bids

    ...with the module designed to allow easy addition of new PSPs in the future. It must support recurring payments and ensure that all transactions are fully traceable and auditable. Full payment gateway specification (TO BE FOLLOWED - READ CAREFULLY): Deliverables - OpenAPI Spec: Fully specified YAML file for the RESTful API. - Java Module: Implementing the functionality described above; including PayPal, Stripe and NoOp PSP adapters. - Unit Tests: Covering all major functionalities. - Configuration: - Structured for integrated payment methods. - PSP-specific configuration instructions/templates/examples for a tenant. - Database: Flyway migration scripts in resources/db/migration. - Dockerfile: For containerizing

    $598 Average bid
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    134 bids

    ...developer who can turn my concept into a brand-new Android application. The project covers everything from planning the core functionality and crafting an intuitive UI, to coding, testing, and delivering a production-ready APK that meets current Google Play guidelines. I have the initial idea and key features in mind; what I need now is your expertise in selecting the right tech stack (Kotlin, Java, or a suitable cross-platform framework that still outputs native performance), structuring the app architecture, and guiding any API or backend decisions. Clear, maintainable code and iterative test builds are essential so I can review progress and give feedback early. Deliverables • Fully functional Android app (latest Android SDK, ready for Play Store submission) • Sou...

    $48 Average bid
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    26 bids

    I already have a stable Android code-base written in mixed Java / Kotlin that targets an offline-first workflow (SQLite locally, SQL Server remotely) and exchanges data through FTP-triggered PHP/HTTP scripts. The project sits on a legacy Gradle 4 stack, and I use a separate C# utility to pre-seed the local database before each release. What I need now is a senior-level pair of hands to take full ownership of the end-to-end APK generation cycle. All SDKs, NDKs, keystores, and signing configs are present on my machine; the environment is ready—you simply step in, run the build, and hand back repeatable output. Scope of work • Pull the existing repository, resolve any Gradle-4 quirks, and confirm the build variants compile cleanly. • Produce a signed, installable ...

    $166 Average bid
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    16 bids

    I need an Onshape software programmer to help with scripting and automation using Python. The automation tasks include: - Parametric designs - Batch processing - Data extraction and reporting - Automatically finding weld lengths Ideal skills and experience: - Proficiency in Onshape and Python ,Java ,feature script - Experience with scripting for CAD automation - Strong problem-solving skills - Familiarity with parametric design and data handling in CAD environments Looking for someone who can streamline these processes and improve efficiency.

    $247 Average bid
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    19 bids

    ...several mid-level interviews focused on Algorithms and Data Structures, all in Java, scheduled over the next few weeks. I need an experienced mentor who can sharpen my problem-solving speed, boost my confidence with tricky edge cases, and polish the way I communicate my approach out loud. Ideally, each session will feel like a real interview: you present a fresh problem, watch me think aloud, challenge my design choices, and then walk me through cleaner or more optimal solutions in Java. Detailed feedback on runtime, memory trade-offs, and code readability is crucial. Deliverables I’d like to see after each session: • A short written summary of where I did well and where I hesitated • Annotated sample code in Java showing the final, accepted solu...

    $27 / hr Average bid
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    13 bids

    ...Android MVP into the Play Store that proves the paid-membership concept for a business resale marketplace. The platform will ultimately match owners who want to sell under-performing shops with buyers or small-cap investors, but the very first milestone is all about secure user onboarding and profile management. Scope of this MVP • Native or high-quality cross-platform Android build (Kotlin, Java, Flutter or React Native are all fine as long as performance is solid). • Two distinct account flows behind a single sign-up screen: “Seller” and “Buyer / Investor.” • Up-front fee gate: once a user selects a role, they pay a small, one-time fee through Google Play billing before the profile is activated. No peer-to-peer transactions, no escr...

    $452 Average bid
    $452 Avg Bid
    90 bids

    ...a proof-of-concept Android application that behaves like an “audio modem,” pushing and pulling live audio through a WebSocket connection with the absolute minimum possible latency. The primary scene is real-time audio streaming, so every design decision should favour tight buffering, fast reconnection and clean, uninterrupted playback. Here is what I need from you: • A lightweight Android app (Java or Kotlin) that opens a configurable WebSocket endpoint, captures audio We need an Android app that runs on a **Redmi 4A (Android 7)** device the app will capture audio from the headset mic via loopback cable and send it to our backend over **WebSocket**, using **Opus encoding**. Incoming audio from WebSocket must be decoded and played back into the headset outpu...

    $160 Average bid
    $160 Avg Bid
    52 bids

    ... • In-app statistics section summarising totals, streaks and completion percentages • Seamless AdMob banner and interstitial integration that respects Google policy and does not disrupt the user journey • A polished, professional UI that feels consistent with modern Material guidelines Code should be well-structured, readable and ready for future feature additions. I’m fine with Kotlin, Java or Flutter as long as performance is smooth and the final deliverables include: the full source code, a signed release-ready APK (or AAB), and brief setup instructions so I can build and publish myself. Accepting completion once the app installs without errors, AdMob test ads display correctly, notifications trigger at the scheduled times, and all graphs update...

    $299 Average bid
    $299 Avg Bid
    39 bids