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    1,500 java data mining example code знайдені роботи

    Прагну залучити фахівця, який допоможе створити інструменти активного кіберзахисту для державних і волонтерських ініціатив України. Основні компетенції, які стануть у пригоді: • Програмування на C, C++, Python, JavaScript, Assembly та Java — потрібно вміти комбінувати високорівневу й низькорівневу логіку. • Глибоке розуміння Windows, Linux і macOS, зокрема системних процесів, файлових структур та моделей прав доступу. • Впевнена робота з мережевими протоколами TCP/IP, HTTP і FTP, а також розуміння типових вразливостей у сервісах. Що саме очікую одержати: 1. Набір модулів для моніторингу та раннього виявлення чужих вторгнень. 2. Тестові сценарії, які імітують реальні атаки, щоб ми могли перевіряти готовність власної інфраструктури. 3. Документац...

    $7500 Average bid
    $7500 Сер. заявка
    1 заявки
    Ukrainian Mining Market Analysis 2025
    Закінчився left

    ...market analysis of the Ukrainian mining industry for the year 2025. The focus will be on understanding the market size, growth potential, and competitive landscape. Key Requirements: - Conduct in-depth analysis of the Ukrainian mining market - Focus on market size, growth trends, and competitive dynamics - Utilize a variety of data sources including industry reports, company financials, and government statistics - Provide a detailed report with actionable insights and forecasts Ideal Skills and Experience: - Proven experience in market research and analysis, particularly in the mining sector - Strong analytical skills and ability to interpret complex data - Familiarity with Ukrainian market dynamics and industry trends - Proficiency in sourcing and a...

    $880 Average bid
    $880 Сер. заявка
    9 заявки

    Що потрібно зробити. Додаток написано понад 10 років тому. В Android студіо Java. Працює з картами офлайн, на базі опенстрітмап третьої версії. Має підключений девайс з блютуз з яким програма спілкується. Цей функціонал написаний та працює. 1. Перше це зберегти весь функціонал старого додатка (формули та інше перенести на новий). Потрібно оновити двигун для роботи з версією п'ять (актуальної) опенстрітмап. 2. Оновити іконки програми (їх від сили 10шт.) і трохи текстового меню програми. (Додати пункти меню та можливість відправлення дампа та повідомлень розробнику у разі потреби при фарбуванні). 3. Додати кнопку, що відключається із загального меню програми, для відправки команди на пристрій підключений по блютуз. Надсилання команди з ащитою від випадкового натискання (повзунок...

    $263 Average bid
    $263 Сер. заявка
    2 заявки

    До цих 6 завдань я надам код прикладу, як це повинно виглядати, опис завдань, як їх треба зробити. Все це треба завантажити на Github у мій репозиторій .Та також важливий аспект щоб воно працювало. Від вас очікується швидка робота, на що я щедро заплачу.

    $23 Average bid
    $23 Сер. заявка
    6 заявки

    Курсова робота з об'єктно орієнтованого програмування мовою Java, подробиці у файлі.

    $34 Average bid
    $34 Сер. заявка
    3 заявки

    Є сайт на HTML + CSS. Для нього необхідно зробити корзину, щоб клієнт міг додати кілька товарів в корзину і купити їх. Краще, щоб корзина була створена за допомогою JAVA. $50

    $30 - $250
    $30 - $250
    0 заявки
    Створити веб-сайт
    Закінчився left

    Написати веб-сайт через OpenServer .Повний опис завдання у прикріпленому документі.Тема сайту"Мова програмування Java".

    $14 / hr Average bid
    $14 / hr Сер. заявка
    3 заявки

    Використати сингулярний розклад прямокутної матриці до розв'язування систем лінійних алгебраїчних рівнянь, методом Гревіля або склетним розкладом матриці в мові на вибір с++, c#, java, python. Програма повинна бути описана. При реалізації методу Гревілля треба звернути увагу, що дійсне число дорівнює нулю, якщо його абсолютна величина менша деякого малого числа (наприклад, 10 у мінус шостому степені, бо операції над дійсними сислами виконуютьсія наближено). Створити зручний інтерфейс. Теорія в книзі Гантмахер Ф.Р. - Теория матриц.pdf ст.32-40

    $30 Average bid
    $30 Сер. заявка
    1 заявки

    ...integrations) Drive context extraction from legacy systems (code, DB, flows) Own PR-based workflows for both generated code and configs Set up shadow deployments and parity validation Work with infra/security teams on deployment and approvals Drive observability + feedback loop (logs, metrics, iteration) Must-Have Experience Built and deployed microservices / APIs in production Worked on legacy modernization or refactoring projects Hands-on with CI/CD + cloud (AWS / Azure / GCP) Strong experience with code reviews, branching, PR workflows AI / Modern Dev (Mandatory) You must have real experience using AI in development, not just awareness: Daily use of tools like: GitHub Copilot / Cursor / Claude Code / ChatGPT Experience: Generating production code us...

    $2032 Average bid
    $2032 Сер. заявка
    33 заявки

    ...tools to generate services, tests, and workflows. This role is about building with AI, not just integrating APIs. What You’ll Do Build AI-assisted pipelines for: Code generation Test generation Context extraction Work with large codebases to create AI-readable context Generate backend services and APIs using AI tools Support parity validation and test automation Contribute to feedback loop (improve outputs via iteration) Must-Have Experience Hands-on with LLMs in real projects (not just POCs) Built something using: LangChain / LlamaIndex / custom pipelines (or equivalent) Experience working with: APIs backend systems structured data AI Tools (Strong Expectation) You should actively use: Claude / ChatGPT / Gemini Cursor / Copilot / AI coding tools Prompt engineering i...

    $1290 Average bid
    $1290 Сер. заявка
    33 заявки

    I need an experienced developer to integrate the Sharekhan Trade Tiger API. The primary function is accessing 20 years of historical data. Additionally, I need real-time market data for the equity market. Key requirements: - Access to 20 years of historical data - Real-time market data for equities - Proficiency in working with financial APIs - Experience in data handling and integration - Strong programming skills, preferably in Python or Java Please provide examples of previous similar work.

    $74 Average bid
    $74 Сер. заявка
    16 заявки
    Arquitecto Backend / Senior Java Spring Boot Developer
    6 дні(-в) left
    Верифіковано

    Buscamos un Arquitecto Backend / Senior Java Developer con más de 10 años de experiencia comprobable para diseñar, estructurar y desarrollar desde cero los proyectos base de un sistema complejo. Este rol es crítico y definirá la base técnica sobre la cual se construirá todo el producto. **Objetivo del rol** Diseñar e implementar una arquitectura backend sólida, escalable y mantenible, estableciendo estándares técnicos obligatorios y una base profesional lista para escalar con múltiples equipos. **Responsabilidades principales** * Diseñar la arquitectura del sistema aplicando DDD y arquitectura hexagonal * Construir y estandarizar los proyectos base backend * Definir una separación es...

    $550 Average bid
    $550 Сер. заявка
    68 заявки

    ...Angular and Java. The core of the platform will be written in Java on the server side, exposing RESTful endpoints, while the client side must be a clean, responsive Angular interface that feels fast even when large data sets are moving through it. You should have at least four years of hands-on experience with: • Modern Angular (v10+) components, services and state management • Java (preferably 11+) with Spring Boot or a similar framework for rapid API development • Secure, token-based authentication and role management • Relational databases and basic schema design What I need from you: 1. A modular codebase that cleanly separates concerns so future features are simple to plug in. 2. A working proof-of-concept that allows us to ...

    $12 / hr Average bid
    $12 / hr Сер. заявка
    55 заявки
    Resolve OTP Country Code Bug on App
    6 дні(-в) left
    Верифіковано

    Project Title: Fix OTP Country Code Issue in Mobile App (Wrong Country Code Sent) Project Description: Hello, I need an experienced mobile app developer to fix an OTP issue in my application. Problem: When users select their country and request OTP verification, the app always sends the phone number with country code +91 (India) instead of the country code chosen by the user. Example: If user selects Iraq (+964), Kuwait (+965), or any other country, the app still sends OTP only with +91. What I Need: - Check and fix country code picker / phone input logic - Make sure selected country code is passed correctly to backend/API - Fix OTP sending process for all countries - Test with multiple countries - Ensure app works properly on Android...

    $128 Average bid
    $128 Сер. заявка
    154 заявки

    ...different accent colors --- ## TECHNICAL REQUIREMENT * Must use Elementor (no full hardcoding) * Must not rely on default WooCommerce layout * Should be lightweight and fast --- ## IMPORTANT * Do NOT use default theme product page * Build custom template using Elementor Theme Builder * Match design as close as possible to reference --- Note - Theme is installed , Elementor Pro , ACF and WP code plugin installed. Please share similar work before starting....

    $84 Average bid
    $84 Сер. заявка
    32 заявки
    Full Stack Java Developer
    6 дні(-в) left

    ...are looking for a highly skilled Java Full Stack Developer with 5+ years of hands-on experience in designing, developing, and deploying scalable applications. The ideal candidate should have strong expertise in Core Java, Spring/Spring Boot, RESTful web services, MySQL, and REACT. Experience with Liferay is added advantage. ⸻ Key Responsibilities • Design, develop, and maintain Java-based backend services and RESTful APIs • Work on full-stack development, including front-end components and integration with backend systems • Develop efficient database queries, procedures, and schemas using MySQL • Collaborate with cross-functional teams to deliver high-quality software solutions • Troubleshoot, optimize, and improve application performance &b...

    $3 / hr Average bid
    $3 / hr Сер. заявка
    31 заявки

    Code-Shift (Native European Spanish Speakers) Audio Recording (Dual-Channel) Recording Approach We will deliver natural bilingual conversations in a contact-center (agent–customer) format with strict adherence to code-switching requirements. Audio Format * Dual-channel WAV (Agent / Customer separated) * Native 8kHz and 16kHz recordings (50/50 split) * Single recording per conversation with clear channel separation Code-Switching Implementation We support both required patterns: Type 1: Bilingual Agent–Customer Interaction** * Agent: 100% secondary language(English) * Customer: 100% primary (European Spanish) language * ~50% code-switching at conversation level * Natural conversational flow (no forced switching) * Single audio + single transcr...

    $17 / hr Average bid
    $17 / hr Сер. заявка
    3 заявки

    ...tracker) dengan pengingat notifikasi. • Modul aktivitas kesehatan—misalnya log olahraga ringan, meditasi, atau catatan asupan air. • Sistem poin atau badge untuk memotivasi konsistensi dan rasa tanggung jawab. • Dasbor ringkas yang menampilkan statistik kemajuan harian dan mingguan. Saya membutuhkan: 1. Desain antarmuka yang sederhana dan ramah pemula. 2. Pengembangan full-stack Android (Java atau Kotlin), termasuk integrasi local database/Room atau solusi lain yang Anda rekomendasikan. 3. File APK siap install, beserta kode sumber yang terdokumentasi singkat agar mudah saya kembangkan lanjut. 4. Uji coba dasar pada beberapa ukuran layar serta versi Android terbaru yang masih banyak dipakai. Bila Anda memiliki pengalaman membangun aplikasi p...

    $24 / hr Average bid
    $24 / hr Сер. заявка
    34 заявки
    Real-Time Android Bus Tracker App
    6 дні(-в) left
    Верифіковано

    ...Google-style map view, coupled with dynamic ETA calculations so users always know how many minutes remain until the next stop. Key workflow • Passengers open the app, pick a route, watch buses move on the map, and receive push notifications when their chosen bus is running late or is about to arrive. • Drivers log in to update their status, start or end a trip, and automatically stream location data in the background. • Administrators access an in-app dashboard (or a lightweight web console, if that is easier) to add routes, manage schedules, and monitor fleet performance. Must-have features 1. Live bus tracking on an interactive map with smooth marker animation. 2. Accurate estimated-time-of-arrival alerts based on real-time traffic and current speed. 3...

    $96 Average bid
    $96 Сер. заявка
    88 заявки

    We need to create webview Mobile app for andorid and ios by this link "" in flutter and app have features app icon, splash screen, Enable Installs Statistics, Enable Java Script, Enable Swipe To Refresh, Load Cache Else Network, Allow HTTP Requests, Add Internet Permission, Add Storage Permissions, Add GPS Permissions, Add Audio Permissions, Add Video Permissions, Enable Firebase setting, Enable Push Notification some more requirement Requirements: • Load a specific URL inside a WebView • Pull-to-refresh support • Error handling (e.g. show a message if no internet connection) • App icon and splash screen (we’ll provide design assets) • Minimal permissions (e.g., allow file/camera upload via browser input type) • Push notifications via fi...

    $82 Average bid
    $82 Сер. заявка
    59 заявки

    I need a comprehensive online entrance exam software built on Java technology. The software should support multiple-choice questions, essay-type questions, and problem-solving/coding questions. Key Requirements: - User Roles: Students, Examiners/Teachers, Administrators - Features for Exam Creation and Management: - Question Bank: A robust repository of questions - Automated Grading: For efficient evaluation - Timed Exams: To simulate real exam conditions Ideal Skills and Experience: - Proficiency in Java and experience with developing educational software - Knowledge in database management for a question bank - Familiarity with automated grading algorithms - Experience in creating user-friendly interfaces for multiple user roles Looking for a developer who can deliv...

    $2262 Average bid
    $2262 Сер. заявка
    62 заявки

    Saya ingin menghadirkan aplikasi Android bernama “10 Juta Pertama”. Fokus utama versi awal ini sederhana: aplikasi harus berjalan mulus di Android, menawarkan pengalaman pengguna yang rapi, dan mendukung pembelian dalam aplikasi (in-app purchases) sebagai sumber monetisasi. Lingkup kerja: • Rancang struktur proyek di Android Studio (Kotlin atau Java, pilih yang paling efisien). • Buat antarmuka inti—layar beranda, detail fitur, dan halaman pembayaran—dengan tampilan modern namun ringan. • Implementasikan Google Play Billing Library agar transaksi in-app berjalan aman dan sesuai pedoman Google. • Sertakan dokumentasi setup dan panduan rilis ke Google Play Console. Keluaran yang saya butuhkan: APK siap uji, kode sumber terorgan...

    $5 / hr Average bid
    $5 / hr Сер. заявка
    14 заявки

    Saya ingin menghadirkan aplikasi Android bernama “10 Juta Pertama”. Fokus utama versi awal ini sederhana: aplikasi harus berjalan mulus di Android, menawarkan pengalaman pengguna yang rapi, dan mendukung pembelian dalam aplikasi (in-app purchases) sebagai sumber monetisasi. Lingkup kerja: • Rancang struktur proyek di Android Studio (Kotlin atau Java, pilih yang paling efisien). • Buat antarmuka inti—layar beranda, detail fitur, dan halaman pembayaran—dengan tampilan modern namun ringan. • Implementasikan Google Play Billing Library agar transaksi in-app berjalan aman dan sesuai pedoman Google. • Sertakan dokumentasi setup dan panduan rilis ke Google Play Console. Keluaran yang saya butuhkan: APK siap uji, kode sumber terorgan...

    $15 / hr Average bid
    $15 / hr Сер. заявка
    10 заявки

    1. Project Overview(Backend Microservices System (SPRING FRAMEWORK ONLY)) We are developing a large-scale, enterprise-level digital commerce platform on a Java-based microservices architecture (Spring Ecosystem). The development phase is "LARGELY COMPLETED". We are not looking for a builder to start from scratch, but rather a "finisher"—a skilled Backend Engineer to take ownership of the existing codebase. The primary goal is to validate current integrations, stabilize the logic, and ensure the system is production-ready through rigorous testing. WE WILL PROVIDE TESTING HELP FROM OUR SIDE TOO. 2. Current Project Status & Scope The following microservices have been developed. Your role is to ensure these services communicate seamlessly, handle edge cas...

    $150 Average bid
    $150 Сер. заявка
    61 заявки

    Title: Senior Backend Engineer Needed: RBAC + Alibaba Cloud Deployment (Urgent) Description: I have a working AI backend codebase. Need a senior backend engineer to implement code updates as per requirements, RBAC and deploy it on Alibaba Cloud (Saudi region). This is an update + deployment task — not a full build from scratch. Scope: * Implement RBAC (AI agent wise) using JWT * Secure existing APIs (no rewrite) + integration with itsm system * Deploy on Alibaba Cloud ECS (Ubuntu or RHEL or centos) * Configure Nginx + HTTPS * Ensure APIs are production-ready Deliverables based on above mentioned scope: Code updates as per the requirements discussed. Spreadsheet will be shared * Clean RBAC implementation * Live deployed API (Alibaba or huawei cloud) * Minimal docu...

    $100 Average bid
    $100 Сер. заявка
    34 заявки

    Code-Shift Native Speakers – Hmong (hmn_US) Audio Recording (Dual-Channel) Recording Approach We will deliver natural bilingual conversations in a contact-center (agent–customer) format with strict adherence to code-switching requirements. Audio Format * Dual-channel WAV (Agent / Customer separated) * Native 8kHz and 16kHz recordings (50/50 split) * Single recording per conversation with clear channel separation Code-Switching Implementation We support both required patterns: Type 1: Bilingual Agent–Customer Interaction** * Agent: 100% secondary language(English) * Customer: 100% primary Hmong (hmn_US) language * ~50% code-switching at conversation level * Natural conversational flow (no forced switching) * Single audio + single transcri...

    $8 - $15 / hr
    $8 - $15 / hr
    0 заявки

    ...cargar una lista M3U remota, pero la aplicación debe tener un campo para ingresar una URL de la lista M3U personalizada. - La aplicación debe mostrar un logo al momento de cargarse. • Función de búsqueda integrada para localizar rápidamente canales dentro de la lista. Entregables • APK instalable y versión de prueba firmada en modo debug. • Código fuente completo (Android Studio, Kotlin o Java) con instrucciones para cambiar la URL/archivo de la lista M3U. • Breve guía de instalación y uso. Valoro un arranque rápido, consumo ligero de recursos y compatibilidad con la mayoría de dispositivos Android TV actuales. La aplicación debe ser similar a la siguiente: (M3U IP...

    $182 Average bid
    $182 Сер. заявка
    48 заявки
    Mirth/BridgeLink Ongoing Support Developer
    5 дні(-в) left
    Верифіковано

    ... hands-on attention. Most of the work centres on supporting and fine-tuning the channels and destinations already in production; performance slow-downs on the older Mirth instances are the issues I meet most often. All access is through AnyDesk screen-share sessions—no direct log-ins or code exports—so you should be comfortable working live while we talk through each ticket. Your background must cover both the classic Mirth interface and the newer BridgeLink tool-set, with enough HL7, JavaScript, Java and SQL knowledge to trace bottlenecks, tweak transformers, and keep message queues flowing smoothly. Typical tasks you’ll handle: • Diagnose and resolve performance issues on legacy Mirth channels • Update or patch existing channels/destin...

    $17 / hr Average bid
    $17 / hr Сер. заявка
    142 заявки
    Mobile Escrow Platform Development
    5 дні(-в) left
    Верифіковано

    ...right out of the gate. Bank-grade encryption, a strict zero-trust architecture, and full OWASP compliance are non-negotiable pillars of the build. Phase 1 – Mobile First • Design and code the core escrow workflow for peer-to-peer and business-to-business payments. • Implement strong customer authentication, role-based access, and end-to-end encrypted data at rest and in transit. • Integrate a modular backend API so we can later expose the same services to a web portal and USSD interface without rewriting business logic. Security & Compliance Every line must pass automated OWASP checks, static code analysis, and peer review. Key vault management, token-based sessions, and granular audit trails are required so the platform is rea...

    $740 Average bid
    $740 Сер. заявка
    282 заявки

    Saya ingin mengembangkan sebuah aplikasi media sosial untuk platform Android. Fokusnya adalah pengalaman berbagi konten singkat dan interaksi ringan antar-pengguna. Lingkup kerja yang saya butuhkan: • Rancang arsitektur front-end (Kotlin/Java) dan back-end ringan—Firebase atau solusi setara sangat dipertimbangkan. • Buat UI modern sesuai pedoman Material Design. • Implementasikan fitur inti: pendaftaran & login (email/Google), profil pengguna, unggah foto / video singkat, like dan komentar, notifikasi push dasar, serta pencarian teman. • Siapkan database cloud, autentikasi, dan penyimpanan berkas. • Sediakan dokumentasi build supaya aplikasi mudah dipelihara dan dikembangkan lebih lanjut. Kriteria penerimaan: – APK debug & rel...

    $452 Average bid
    $452 Сер. заявка
    34 заявки
    Rust Code Performance Optimization
    5 дні(-в) left
    Верифіковано

    I'm seeking an experienced Rust developer to review and optimize my code, with a focus on enhancing performance. Key Objectives: - Primary goal: Optimize performance - Critical area: Data processing - Main aspect to optimize: Memory usage Ideal Skills and Experience: - Expertise in Rust programming - Strong background in performance optimization - Experience with data processing applications - Proficient in memory usage analysis and reduction - Familiarity with best practices in Rust development Please provide relevant experience and approach in your bids.

    $334 Average bid
    $334 Сер. заявка
    40 заявки
    Nationwide thebluebook.com Contractors Data Scraping
    5 дні(-в) left
    Верифіковано

    ...every phone number shown, and any email address the site provides. Because often hides data behind pagination or pop-ups, I expect a robust scraping approach that can handle dynamic content (Selenium, Playwright, or similar) as well as polite rate-limiting so we stay within acceptable request volumes. Deduplication is essential—if the same company appears under multiple categories or listings, merge the records instead of inflating the count. Deliverables • One clean .xlsx file containing all requested fields, ready for filtering and analysis • A brief text log explaining the scraping workflow, libraries used (e.g., Python–Selenium/BeautifulSoup, Node–Puppeteer, etc.), and any known data gaps • Confirmation that the crawl completed for e...

    $990 Average bid
    $990 Сер. заявка
    62 заявки

    I’m ...back-end that supports real-time data exchange, notifications, and secure user authentication. Clean architecture, thoughtful UI/UX, and solid performance are priorities. I’m open to your recommended stack—Kotlin or Java in Android Studio with Firebase, RESTful APIs, or other proven solutions. Deliverables • Complete Android Studio project with readable, well-commented source code • Signed release APK/AAB ready for Google Play submission • Concise setup & deployment documentation When you reply, please share links to Android social apps you’ve built, outline your proposed tech stack, and give an estimated timeline to first stable release. I look forward to collaborating with someone who can bring this platform t...

    $2122 Average bid
    $2122 Сер. заявка
    88 заявки
    High-Volume RFQ Bid Writer
    5 дні(-в) left

    I run a tender desk that must push out 20–30 fully-compliant RFQ submissions every month across mining logistics, public procurement, and general supply. To keep pace, I need a proven bid writer who can reliably turn around 5–7 quality bids per week without hand-holding. Much of our pipeline sits in the public procurement space, so you’ll need a solid grasp of National Treasury rules, briefing sessions, and portal quirks. Compliance is everything: you must be completely comfortable preparing B-BBEE affidavits and detailed pricing schedules, and you should also know your way around the usual SBD forms and CSD updates so nothing gets flagged non-responsive. The role is remote; being Gauteng-based is a plus for fast collections or site meetings but not a deal-br...

    $445 Average bid
    $445 Сер. заявка
    24 заявки
    Enhance Selenium Tests
    Закінчився left

    I'm seeking an experienced developer to improve my existing front-end tests using Java, Selenium, and Cucumber. Key tasks include: - Analyzing current test suite - Identifying and resolving inefficiencies - Enhancing test coverage and reliability Ideal skills and experience: - Proficiency in Java, Selenium, and Cucumber - Strong background in front-end testing - Experience with test optimization and debugging Looking for someone detail-oriented, with a strong problem-solving mindset.

    $137 Average bid
    Терміновий
    $137 Сер. заявка
    77 заявки

    ...sampingan, kalkulator keuntungan, hingga pengingat tugas harian. Ruang lingkup: • Rancang UI/UX sederhana dan intuitif (material design). • Kembangkan fitur inti: daftar peluang, detail langkah-langkah, bookmark, dan notifikasi. • Bangun backend ringan (Firebase atau setara) untuk sinkronisasi konten serta penyimpanan data pengguna. • Sertakan contoh data dummy agar saya bisa melihat alur lengkapnya. • Buat APK siap instal beserta source code terstruktur (Java atau Kotlin). Kriteria penerimaan: • Aplikasi berjalan lancar di Android 8+. • Navigasi jelas dan bebas crash. • Kode diberi komentar seperlunya agar mudah dipelajari dan dikembangkan. Saya terbuka jika Anda memiliki ide tambahan, atau jika na...

    $460 Average bid
    $460 Сер. заявка
    12 заявки
    Scalable Digital Operations Platform Development
    5 дні(-в) left
    Верифіковано

    I am building a scalable digital operations platform that enables individuals (primarily job seekers in the US) to outsource repetitive, time-intensive tasks such as job applications and structured data entry to a distributed workforce. The core idea is to create a managed marketplace where tasks are standardized, tracked, quality-controlled, and fulfilled efficiently through human operators. The platform should ensure transparency, reliability, and turnaround time guarantees, while maintaining strong control over quality and worker performance. From a product standpoint, this will function as a two-sided workflow-driven system with three primary roles: clients, workers, and administrators. Clients should be able to onboard, purchase credits or pay for services, submit structured t...

    $759 Average bid
    $759 Сер. заявка
    86 заявки

    I’m building a new web application and the entire user interface needs to be planned, coded, and polished in React while communicating seamlessly with an existing Java-based REST API. The goal is a fast, responsive, component-driven front end that speaks the same language as the Java services behind it, so a solid grasp of both React (hooks, context, modern tooling) and core Java concepts is essential. Scope of work • Set up the project scaffold (Create React App or Vite, ESLint, Prettier, Jest). • Implement authentication against the provided Java endpoints, handling token storage and refresh. • Develop a reusable component library and page layouts that match supplied Figma designs. • Integrate REST calls for dashboard widgets...

    $276 Average bid
    $276 Сер. заявка
    103 заявки

    ...build a complete Android utility-style mobile app, taking it from initial architecture through to a polished Google Play–ready release. I need one person who can comfortably handle both the client side (Kotlin / Java, Jetpack components, adaptive UI) and the server side—API design, database schema, and cloud deployment—so every layer meshes smoothly. Core expectations • Clean, modern Android codebase with clear separation of concerns • Secure backend (Node.js, Django or similar is fine) exposed through REST/GraphQL endpoints • Basic authentication, settings storage and offline data caching typical of a productivity or tool-oriented app • Unit tests plus concise build & deploy documentation Deliverables 1. Full Android S...

    $74 Average bid
    $74 Сер. заявка
    36 заявки

    ...I need an experienced Android developer who can dive into the existing codebase, trace the root cause, and push a clean, well-documented fix to Git (or your preferred VCS). Scope of work • Review the current Kotlin/Java code (the project uses standard Android Studio tooling). • Identify why the Name and Referral No. are not updating or showing correctly. • Implement a solid fix, test it across the latest Android OS versions, and supply an APK or bundle for verification. • Leave concise inline comments so future maintenance is straightforward. Deliverables 1. Updated source code with the bug resolved. 2. A brief change-log summarising what was altered and why. 3. A compiled release-ready APK/bundle proving the issue is gone. Acceptance criteria...

    $458 Average bid
    $458 Сер. заявка
    170 заявки

    Code-Shift Native Speakers-Brazilian Portuguese Audio Recording (Dual-Channel) Recording Approach We will deliver natural bilingual conversations in a contact-center (agent–customer) format with strict adherence to code-switching requirements. Audio Format * Dual-channel WAV (Agent / Customer separated) * Native 8kHz and 16kHz recordings (50/50 split) * Single recording per conversation with clear channel separation Code-Switching Implementation We support both required patterns: Type 1: Bilingual Agent–Customer Interaction** * Agent: 100% secondary language(English) * Customer: 100% primary (Brazilian Portuguese) language * ~50% code-switching at conversation level * Natural conversational flow (no forced switching) * Single audio + single t...

    $8 - $15 / hr
    $8 - $15 / hr
    0 заявки

    Code-Shift (Native European Spanish Speakers) Audio Recording (Dual-Channel) Recording Approach We will deliver natural bilingual conversations in a contact-center (agent–customer) format with strict adherence to code-switching requirements. Audio Format * Dual-channel WAV (Agent / Customer separated) * Native 8kHz and 16kHz recordings (50/50 split) * Single recording per conversation with clear channel separation Code-Switching Implementation We support both required patterns: Type 1: Bilingual Agent–Customer Interaction** * Agent: 100% secondary language(English) * Customer: 100% primary (European Spanish) language * ~50% code-switching at conversation level * Natural conversational flow (no forced switching) * Single audio + single transcr...

    $12 / hr Average bid
    $12 / hr Сер. заявка
    1 заявки

    Code Shift (Native Canadian French Speakers) Audio Recording (Dual-Channel) Recording Approach We will deliver natural bilingual conversations in a contact-center (agent–customer) format with strict adherence to code-switching requirements. Audio Format * Dual-channel WAV (Agent / Customer separated) * Native 8kHz and 16kHz recordings (50/50 split) * Single recording per conversation with clear channel separation Code-Switching Implementation We support both required patterns: Type 1: Bilingual Agent–Customer Interaction** * Agent: 100% secondary language(English) * Customer: 100% primary (Canadian French) language * ~50% code-switching at conversation level * Natural conversational flow (no forced switching) * Single audio + single transcri...

    $8 - $15 / hr
    $8 - $15 / hr
    0 заявки
    Android App Development
    4 дні(-в) left

    I want a complete Android e-commerce applica...locally without compromising user privacy. • Ship the full, well-documented Kotlin/Java source, a signed release APK, and a short README explaining build and deployment steps. This is primarily an E-commerce app, so flawless product browsing, smooth cart operations, and responsive checkout flow are non-negotiable. I’m comfortable iterating in milestones: product catalogue first, cart and payments next, polishing and optimisation last. I will review the code style, stability on a range of devices (API 24+), and adherence to the above acceptance criteria before marking each milestone complete. If you’re confident with Android Studio, Retrofit/Volley, Glide/Coil, and can write maintainable, well-commented cod...

    $142 Average bid
    $142 Сер. заявка
    55 заявки

    Code-Shift (Native European French Speakers) Audio Recording (Dual-Channel) Proposal: Recording Approach We will deliver natural bilingual conversations in a contact-center (agent–customer) format with strict adherence to code-switching requirements. Audio Format * Dual-channel WAV (Agent / Customer separated) * Native 8kHz and 16kHz recordings (50/50 split) * Single recording per conversation with clear channel separation Code-Switching Implementation We support both required patterns: Type 1: Bilingual Agent–Customer Interaction** * Agent: 100% secondary language(English) * Customer: 100% primary (European French) language * ~50% code-switching at conversation level * Natural conversational flow (no forced switching) * Single audio + sing...

    $14 / hr Average bid
    $14 / hr Сер. заявка
    2 заявки

    ...packaging the final installer. You’re free to work in a language you’re most comfortable with—whether that’s C#, Java, Python, Electron/JavaScript, or something comparable—as long as the result runs smoothly on Windows and can later be adapted for macOS or Linux if sales demand it. Robust error handling, an intuitive UI, and clean, well-commented code are must-haves so I can maintain or expand the product later. Deliverables • A brief proposal outlining two or three software concepts and their revenue potential • Approved concept translated into UX mock-ups and a technical architecture overview • Fully developed desktop application with executable installer and complete source code • Basic user manual (PDF)...

    $327 Average bid
    $327 Сер. заявка
    20 заявки

    I need help to recover Bitcoin that went missing after a series of mining-related transfers failed and fees were deducted. The sole objective is to recover lost Bitcoin; no penetration testing or educational demonstrations are required. I will supply full Transaction IDs and all associated details so you can trace what happened on-chain, pinpoint where the funds are currently held, and propose a lawful path to retrieve them. If additional information—such as wallet addresses, mempool screenshots, or further blockchain explorer links—will speed up your investigation, let me know and I will provide it promptly. Please have a proven background in Bitcoin wallet recovery, blockchain forensics, cryptography, or similar disciplines. Familiarity with tools like Bitcoin Core, ...

    $567 Average bid
    $567 Сер. заявка
    10 заявки
    Java Developer + AWS System Maintenance (SaaS platform)
    4 дні(-в) left
    Верифіковано

    We’re looking for a Finland-based freelance developer! Looking for someone experienced in Java and comfortable working with AWS cloud environments to help us maintain and improve our systems. What we need: Strong Java development skills Hands-on experience with AWS (deployment, monitoring, maintenance) Ability to troubleshoot, optimize, and keep systems running smoothly Good communication and ability to work independently Nice to have: Experience with cloud architecture and scalability Familiarity with CI/CD pipelines This is a freelance/contract role with flexible hours. If you’re interested or know someone who might be a great fit, feel free to reach out!

    $29 / hr Average bid
    $29 / hr Сер. заявка
    133 заявки

    ...deliverables • Complete UI/UX designs (Figma or similar) • Production-ready Android code (Kotlin or Java) with clean architecture and documented APIs • Admin panel or backend endpoints enabling listing moderation, user management, and payment tracking • Play Store-ready APK, signed and aligned • Source code repository with build instructions and a short demo video that walks through search, profile login, chat, map view, payment flow, and review submission Acceptance criteria The final build must install on Android 8.0+ devices, return relevant results within one second on a typical 4G connection, process sandbox payments successfully, and pass a brief security review for authentication and data encryption. If you alread...

    $312 Average bid
    $312 Сер. заявка
    68 заявки