Java is a versatile, object-oriented programming language that is widely used for software development across various industries. Java Developers can help clients create anything from complex web applications to automated trading bots and mobile apps. With their advanced skills and knowledge, they can turn your vision into reality, providing you with tailored solutions that align with your business goals. Here are some recent projects that our expert Java Developers made real:

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  • Collaborating as senior developers on large-scale Android projects
  • Solving server request errors for mobile applications
  • Running and optimizing code from Git repositories
  • Designing and implementing web services for seamless integration

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    291 trabajados encontrados, precios en USD

    Presupuesto 50 dolares todos los cambios están en el pdf adjunto Debo realizar arreglos al sistema existente, los mismos se encuentran adjuntos. Algunos son errores, otros son cambios. Modificación de visualización. Posiblidad de cambio de columnas que se ven. Mejoras en el buscador Agregar que se pueda dejar registro por cada quien pasa.

    $13 / hr (Avg Bid)
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    6 ofertas

    Software o programa que contenga 7 módulos que de solución a los problemas planteados en el documento adjunto. Se relacionan los requerimientos funcionales para que se aborde de mejor manera la tarea propuesta, por tal motivo, lo que se espera como producto final, es tener las salidas de cada uno de los requerimientos propuestos en un mismo software.

    $738 (Avg Bid)
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    necesito actualizar un apk de hace 11 años para que use chip nfc usb pn532 en vez de el chip interno que necesita modulo xposed y un par de modificaciones menores

    $211 (Avg Bid)
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    Estamos intentando trabajar AR, especificamente Image target Flyer. , "Place ground" El objetivo es crear un concepto estilo la etiqueta de 19 crimes, por hacer un ejemplo. La fecha limite para entregar el proyecto es el 11 de junio

    $166 (Avg Bid)
    $166 Oferta promedio
    8 ofertas

    Necesito ampliar el equipo de programación con más programadores. Necesito conocimientos avanzados en ReactJS, PHP, Node, NextJS. También valoro conocimientos en JAVA y Python.

    $17 / hr (Avg Bid)
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    Requiero alguien con conocimientos en Estructura de Datos en Java para la realización de un proyecto haciendo uso especialmente de listas enlazadas, métodos de ordenamiento y búsqueda

    $28 (Avg Bid)
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    11 ofertas

    Modulo de una app en Dart con Fluuter, que use georreferenciacion y medición de distancia de la ubicación hasta un punto que se determinara en el mapa.

    $170 (Avg Bid)
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    Es un trabajo de la universidad y solo se quiere una app donde cada usuario ingrese a visualizar sus notas y agendar cita con cada docente en caso este desaprobado. Solo se requiere el APK para mostrarlo en clase.

    $40 (Avg Bid)
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    12 ofertas

    Presupuesto 50 dolares todos los cambios están en el pdf adjunto Debo realizar arreglos al sistema existente, los mismos se encuentran adjuntos. Algunos son errores, otros son cambios. Modificación de visualización. Posiblidad de cambio de columnas que se ven. Mejoras en el buscador Agregar que se pueda dejar registro por cada quien pasa.

    $11 / hr (Avg Bid)
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    El proyecto consiste en crear un mapa de Minecraft que reproduzca fielmente un servidor de GTA RP. GTA RP (Grand Theft Auto Roleplay) es un estilo de juego único donde los jugadores encarnan a un personaje y se sumergen en su personalidad, actuando como si fueran ese personaje. Características Clave de GTA RP: 1. **Dinámicas de Rol**: - Los jugadores asumen la identidad de un personaje creado por ellos mismos y viven su vida dentro de un contexto ficticio junto a otros jugadores. - La interacción puede ser a través de texto o preferiblemente chat de voz para una mayor realismo. - Los personajes pueden ser desde un prominente empresario hasta un extranjero que desconoce el idioma local, una mujer de la mafia, etc. Las posibilidades son infini...

    $218 (Avg Bid)
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    8 ofertas

    Presupuesto 50 dolares todos los cambios están en el pdf adjunto Debo realizar arreglos al sistema existente, los mismos se encuentran adjuntos. Algunos son errores, otros son cambios. Modificación de visualización. Posiblidad de cambio de columnas que se ven. Mejoras en el buscador Agregar que se pueda dejar registro por cada quien pasa.

    $6 / hr (Avg Bid)
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    21 ofertas

    Busco desarrollador web para realizar una página exclusivamente con Java, Javascript, HTML, CSS (puede usar Bootstrap) con base de datos MySQL utilizando XAMPP (phpmyadmin) y Apache NetBeans/Eclipse como entorno. La pagina tiene que tener un inicio de sesión/registro de 2 tipos de usuario (usuario cliente y administrador). La pagina tendrá un menú de navegación en la parte superior con varias pestañas: inicio (introduccion a la web, ultimas noticias, etc), videojuegos (aqui estaran todos los videojuegos de la web con un filtro de busqueda por genero y plataforma sacado de la base de datos donde se ve el nombre de cada uno, foto de su portada, genero, plataforma, fecha de lanzamiento, etc. y alguna opcion para ponerles nota, opinar, añadir a ...

    $165 (Avg Bid)
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    38 ofertas

    En nuestra empresa de Software, tenemos proyectos en Java, y necesitamos aumentar la fuerza de desarrollo, por ellos queremos sumar algunos freelance que trabajen por hora con nosotros

    $8 / hr (Avg Bid)
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    31 ofertas

    Presupuesto 50 dolares todos los cambios están en el pdf adjunto Debo realizar arreglos al sistema existente, los mismos se encuentran adjuntos. Algunos son errores, otros son cambios. Modificación de visualización. Posiblidad de cambio de columnas que se ven. Mejoras en el buscador Agregar que se pueda dejar registro por cada quien pasa.

    $5 / hr (Avg Bid)
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    necesito un Software punto de venta con estas caracteristicas Especificaciones • Software de escritorio • Base de datos mariadb • Control de Licencias de manera remota con servidor • Demo de presentación • Grabado de videos de su desarrollo paso a paso Menú principal • En forma de pestañas • iconos en cuadricula con entorno agradable con iconos y animaciones DATOS DE PRODUCTOS 1. Código de barras 2. Código de proveedor 3. Foto 4. Estatus 5. Descripción/nombre 6. Iva tasa 7. Precio de compra 8. Cuatro precios variables de venta 9. Tipo de producto: articulo, kit, servicio, membresia 10. Categoría 11. Marca 12. Proveedor 13. Elaboración y vencimiento LISTADO DE CRÉDITOS 1. Ver créditos ...

    $4222 (Avg Bid)
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    14 ofertas

    Presupuesto 50 dolares todos los cambios están en el pdf adjunto Debo realizar arreglos al sistema existente, los mismos se encuentran adjuntos. Algunos son errores, otros son cambios. Modificación de visualización. Posiblidad de cambio de columnas que se ven. Mejoras en el buscador Agregar que se pueda dejar registro por cada quien pasa.

    $10 / hr (Avg Bid)
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    12 ofertas
    IOT Developer 6 días left

    I'm looking for an IoT developer to create a device that facilitates automatic data collection, specifically for tracking heartbeat, regular activities and similar fitness-related metrics for not human. This project involves the following: - Designing and implementing an IoT device that efficiently collects and transmits data for monitoring purposes. - Incorporating complex data tracking capabilities, focusing on health and fitness indicators. - Ensuring the device is compatible with a mobile application for data visualization and management. The ideal candidate for this job is an experienced IoT developer with the ability to design and implement a comprehensive data collection system. Familiarity with integrating IoT devices with mobile applications is a must. A background in healt...

    $74 (Avg Bid)
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    5 ofertas

    I'm in need of a skilled software developer to create a custom Android application that will facilitate the remote control of my model tank specifically via touchscreen controls. Key Tasks: - Development of an intuitive, user-friendly interface for touchscreen navigation. This should facilitate the forward and backward movement of the tank. Ideal Skills and Experience: - Proficiency in Android App Development - Strong background in touchscreen interface design - Experience with software for model or remote-controlled devices This project does not require any voice command functions or other maneuver abilities. The primary goal is to successfully move the tank forward and backward using an Android phone as the control device.

    $17 / hr (Avg Bid)
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    34 ofertas
    Vector Graphics Algorithm Design 6 días left
    VERIFICADO

    I need an algorithm written in pseudocode, that can generate images in the form of vector graphics. I have an algorithm that I need to be translated into pseudocode. Requirements and Constraints: - The original algorithm is written in English, so you must be able to interpret this language and convert it effectively. - You should consider resource limitations, as the translation will need to be efficient. - Additionally, you need to consider time complexity constraints when converting the algorithm.

    $22 (Avg Bid)
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    5 ofertas
    DUNS Number and Play Console Setup 6 días left
    VERIFICADO

    I need help in getting a DUNS number and setting up the Play Console. My business has been registered for over a year and I have all the necessary documents for the DUNS number and Play Console setup. I'm looking for a skilled individual who can assist with both these tasks. Skills and Experience: - Familiarity with the process of obtaining a DUNS number - Experience in setting up apps on the Google Play Console - Strong attention to detail to ensure all necessary information is accurately provided

    $12 (Avg Bid)
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    4 ofertas

    I'm in need of a cross-platform app that'll facilitate offline transactions through QR codes. The app's primary audience are general consumers in the African market. The app should be designed to accommodate two user types: normal users and business users, each with distinct functionalities. Key aspects: - Target Database: MySQL - Database Considerations: I'm open to considering NoSQL databases, but it should not be Google's standard. - User Base: The app is primarily aimed at the African market. - Account Types: The app should allow for two kinds of user accounts: normal and business. For the normal user account, the most critical feature is an easy and efficient QR code scanning functionality. This should be intuitive and user-friendly for even those less fami...

    $494 (Avg Bid)
    $494 Oferta promedio
    79 ofertas

    I'm seeking a skilled Haskell developer with a firm grasp of functional programming, type systems, and Haskell libraries. Your task will be to implement some mini Haskell projects.

    $145 (Avg Bid)
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    12 ofertas

    I'm currently working on educational materials that require both ChemDraw and AutoCAD proficiency. I'm seeking an expert who can help me with this project. Your responsibilities: - Utilizing ChemDraw to create accurate and visually engaging chemical structures and diagrams - Using AutoCAD to design clear and informative technical illustrations and diagrams I'm looking for a freelancer with: - Proficiency in ChemDraw and AutoCAD - Previous experience creating educational materials - Strong attention to detail and accuracy The ideal candidate will be able to understand and translate complex scientific and engineering concepts into clear and engaging visual representations. I need final output in PDF format

    $92 (Avg Bid)
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    5 ofertas

    I'm looking for a skilled Android developer to create a vehicle tracking app for smartphones with the following features: - Real-time Location Tracking: The app should be able to provide real-time location updates of the vehicle. - Geofencing Alerts: It should be able to set up geofences and trigger alerts when the vehicle enters or exits these areas. - Vehicle History Tracking: The app should have the capability to store and display the history of the vehicle's movements. -Synchronize the data to the server. The design of the app should be minimalistic, focusing on simplicity and ease of use. It should be compatible with smartphones. Ideal Skills: - Proficiency in Android development - Experience with real-time location tracking and geofencing - Prior work on vehicle tra...

    $368 (Avg Bid)
    Destacado
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    9 ofertas

    I am having a major issue with the core functionality of the Play Store on my Android phone. The main issue is that the mobile apps I have installed from the Play Store are not updating properly. I am looking for someone with extensive experience in Android device troubleshooting, specifically with the Play Store and app updates. Ideal Skills: - Android troubleshooting - App update issues resolution - Play Store functionality familiarity

    $21 (Avg Bid)
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    12 ofertas

    I am in need of a freelance developer with expertise in Python who can create options trading algorithms for Angel One's smart API. Key Responsibilities: - Develop trading algorithms for options - Implement order execution at specific times - Incorporate stop loss orders in the algorithms Requirements: - Proficient in Python - Knowledge and experience in options trading - Familiarity with Angel One's smart API - Strong understanding of order execution - Ability to implement stop loss orders Timeframe: The project needs to be completed within a month. A quick turnaround is essential.

    $166 (Avg Bid)
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    8 ofertas

    Looking for a skilled professional who can develop a fully functioning android app, either by modifying a GitHub (will provide the repository), or by building from scratch. Here's what's required: - Integrate a specific machine learning model which I already have in mind - The app should support user logins, store data securely, deliver push notifications and updates to users - Real-time data processing and visualization features are essential - I am unsure about the need for external API integration, and would appreciate your expertise to guide me through this Please bid if you have strong experience in android development, machine learning, real-time data processing and visualizations. Knowledge and guidance on API integration would be a bonus.

    $142 (Avg Bid)
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    11 ofertas

    I'm looking for an experienced Android app developer to bring my app idea to life. I have some ideas for the design, but I'm open to your expertise in creating a visually appealing and user-friendly interface. I want updatation on my this application. firstly, cheack this then replay. Ideal skills and experience for this project: - Proficiency in Android app development - Experience with user authentication and in-app purchases - Creativity in designing a sleek and intuitive interface - Ability to implement push notifications effectively.

    $1207 (Avg Bid)
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    31 ofertas

    I'm seeking a skilled Flutter developer to create a dialer application that supports both making and recording calls with or without alert (preferred). Key Features: - The app should have a user-friendly interface for making and receiving calls. - It should include a call recording feature allowing users to record their conversations. - Should able to record BOTH side conversation. API is not required as just need the app with menu item to view recorded calls. Ideal Skills: - Proficiency in Flutter and Dart programming - Experience with developing dialer applications - Familiarity with integrating and managing call recording functionality

    $95 (Avg Bid)
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    18 ofertas

    Getting scheduled blocks I am looking a developer who can help me build a server based scheduled block catcher for Amazon flex app. The details are listed below. If this is something that you can do it or have done it before please let me know how much you charge and how long it will take you to complete. Please message for more details. Previous experience preferred!

    $193 (Avg Bid)
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    I'm in need of a highly skilled professional to design and deploy a chatbot on WhatsApp. This bot will primarily handle product inquiries, in English language. Key objectives to meet: Choose a Platform - to build and host the platform. Platform should be easy and inexpensive to operate Set Up Your Account: Create an account on the chosen platform and follow the account setup instructions. Obtain API Credentials: Get the necessary API credentials to integrate your chatbot with WhatsApp. Build the Bot Logic: Develop the logic for your chatbot to understand user questions and provide appropriate responses. Integrate with Language Models Connect Your Bot with WhatsApp Test Your Chatbot: Deploy Your Chatbot Ideal Skills & Experience: - Proven experience in designing and deploy...

    $493 (Avg Bid)
    Acuerdo de Confidencialidad
    $493 Oferta promedio
    16 ofertas

    I'm in need of an AI developer with solid experience in Python. The primary goal of the project is to design and implement a Machine Learning model. Ideal Skills: - Proven experience in AI development, specifically in Python - Proficient in designing and implementing Machine Learning models - Previous work on Recommendation Systems will be a huge plus The AI developer will be responsible for: - Designing an efficient Machine Learning model - Implementing the model in Python - Ensuring the model can function as a Recommendation System Please only apply if you have relevant experience and skills in the mentioned areas. Thank you.

    $538 (Avg Bid)
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    I'm in need of a skilled developer who can create an OTP bypass software to work as a web app. Key Requirements: - Web App: The software should be developed to work as a web application, accessible from any browser. - OTP Bypass: The primary function of the software is to bypass OTPs for various platforms. This should be done in a seamless and efficient manner. - Security: While I haven't specified the exact level of security required, you're expected to implement adequate security measures to ensure the integrity of the software. Ideal Skills and Experience: - Strong web application development skills - Proficiency in OTP systems and their bypass mechanisms - Good understanding of security concepts in software - Ability to deliver a user-friendly and reliable software Y...

    $9 / hr (Avg Bid)
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    7 ofertas

    I am in need of an experienced Android developer to build an innovative educational app focused on finance learning. This project requires: - Proficient skill set in Android platform, with significant understanding in app development. - Integrating key functionalities such as interactive learning modules. - Proven experience in integrating APIs. A solid background in building interactive educational apps will be an advantage. Preference will be given to developers who can show a portfolio of innovative and engaging app development projects, especially related to finance education.

    $147 (Avg Bid)
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    24 ofertas

    Create a media server to run the jt1078 protocol from the ministry of china ( based on the RTP protocol) in nodejs, which will provide video and audio in real time for the web in HLC OR FLV. example project:

    $150 (Avg Bid)
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    I am seeking a professional to create a callback or postback URL for my Wix website. The motivation behind this is to facilitate integration with an advertising platform. Specifics regarding the advertising company will be provided later. In this role, you will: - Develop a callback or postback URL for my website - Ensure seamless integration with an undisclosed advertising platform - Make necessary adjustments in the setup to maintain efficacy & efficiency Ideal skills and experience: - Wix Platform proficiency - Advanced understanding of callback/postback URLs - Previous experience with advertising platform integration

    $43 (Avg Bid)
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    I am seeking an experienced Java programmer with a strong background in Minecraft modding to recreate and update the Fossils and Archeology Mod Revival for Minecraft 1.20.1. This project aims to bring back the classic mod with updated polished features, improved performance, and compatibility with the latest version of Minecraft. Key Responsibilities: Create a new Fossils and Archeology Mod Revival for Minecraft 1.20.1. Develop new gameplay mechanics, visual enhancements, and new items/blocks. Ensure compatibility and optimization for Minecraft 1.20.1. Suggest and implement creative ideas to improve the mod. Collaborate with me to ensure the mod meets the vision and standards. Mod Overview: This mod allows players to discover dinosaur bones, extract DNA, and recreate prehistoric creatu...

    $2196 (Avg Bid)
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    45 ofertas

    I'm encountering a recurring issue where my Azan Android service stops every few hours, causing the prayer time notifications to cease. I need to restart the mobile or reselect the Muezzin again then the service works few hours and then again dies. I need an expert in Android development to help me address this issue and enhance the stability of the service. issue needs to be fixed on the remote desktop, codes cannot be provided. Please include in your bid an overview of how you would approach this problem and your relevant experience. Regards

    $6 / hr (Avg Bid)
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    I am seeking a skilled developer to integrate Adobe Sign with my website's form, specifically the text fields. The project entails a mix of both sensitive and non-sensitive data, hence requires utmost care and potential encryption input. Also, the implemented solution must support Single Sign-On (SSO) as the preferred authentication method for users accessing and filling the form. This task requires: - Proficient understanding of Web Development and Adobe Sign. - Provable experience with data security and encryption methods. - Expertise in implementing Single Sign-On authentication processes. Please bid if you're familiar with the above and can meet the requirements.

    $496 (Avg Bid)
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    I don't want to buy a one-time program. Show me a way to fud files for life. Maybe make a program or better yet teach it.

    $111 (Avg Bid)
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    8 ofertas
    Java Bug Fixing for Desktop App 6 días left
    VERIFICADO

    I'm looking for a Java developer to address a minor bug in my desktop application. Key Project Details: - Specific Task: Bug Fixing - Bug Severity: Minor (Does not affect functionality) - Application Type: Desktop The bug doesn't affect the application's overall functionality, but it's important to correct it for a seamless user experience. Ideal Skills & Experience: - Strong Java programming skills - Proficiency in debugging and bug fixing - Experience with desktop applications is a plus

    $20 (Avg Bid)
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    I'm looking for a skilled developer to integrate several trending Roblox games on my site. The primary focus will be on implementing an auto delivery system. Key Requirements: - Auto Delivery system: The system should automatically send out game items to players. Criteria: - Recipient Selection: The system should be able to send game items based on the player's username and give them only the items that they have purchased. Ideal Skills: - Roblox Game Development: Experience in creating or working with Roblox games is essential. Understanding of game dynamics, items, and how they can be integrated into a website is a must. - System Development: Proficiency in creating automated systems is necessary. Please bid if you have the necessary experience, and can help me achiev...

    $3291 (Avg Bid)
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    SpringBoot Developer Needed 6 días left
    VERIFICADO

    I have a project in javafx scenebuilder. It is necessary to create an application for entering a work order via mobile phone and to display it in the javafx program. The task is small. Ideal for beginners. I don't pay much. Max $10 and good rating. This makes it good for new freelancers. At the input we have the following: Dimensions (width, length, height), choose the customer from the database or add a new customer to the database, note. Nothing special!

    $18 (Avg Bid)
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    We are seeking a skilled and experienced Android Developer to join our dynamic team. The primary responsibility of this role is to implement a new feature in our Android application that integrates with a third-party QR code scanner. This feature will enable the app to communicate with the external QR code scanner, allowing users to scan QR codes and display the results within the app. Key Responsibilities: Collaborate with the product and design teams to understand the feature requirements and user experience goals. Develop and implement the integration of the Android app with a third-party QR code scanner. Ensure seamless communication between the app and the QR code scanner when the user initiates a scan. Capture and process the QR code data from the scanner and display it accurately ...

    $25 / hr (Avg Bid)
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    Omnet++ simulation I am seeking a skilled C++ developer to assist me with a business-related project. The role will involve debugging a Tarjan algorithm file as well as implementing messaging capabilities for node status monitoring. Notice that it should be done on Omnet++. Key Responsibilities: - Debugging: The main task will be to identify and resolve runtime errors in the existing C++ Tarjan algorithm file. Proficiency with algorithms and debugging techniques in C++ is essential. - Messaging: Implement a communication system that allows for status messages to be sent and received throughout the network of nodes. These messages will be vital for monitoring the status of individual nodes within the system. Ideal Candidate: - Strong C++ skills: Extensive experience with C++ programming...

    $28 (Avg Bid)
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    I am looking for a skilled app developer to create a food menu app with a unique loyalty program. This app would be specifically for Android devices and should integrate a QR code system for tracking customer purchases and a reward system based on consecutive spending. Key Features: - Development of an Android application that functions as a digital food menu. - Implementing a loyalty program that tracks customer purchases using QR codes. - Reward system that offers a free lunch and dinner meal on Friday to customers who spend a certain amount from Monday to Thursday. Ideal Skills and Experience: - Proven experience in Android app development, with a strong portfolio of past work. - Proficiency in implementing QR code systems in apps and using them for customer tracking. - Prior experien...

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    1 participaciones

    I have a specific Android app code from GitHub that I need help compiling and making minor UI/UX redesigns to.. This is a big project and we are just giving it phases by phase - The task involves compiling the code, ensuring it works correctly and making small modifications to the user interface and user experience. The goal is to improve the app's usability, look, and feel. Ideal Skills & Experience: - Proficiency in Android app development and coding - Experience with code compilation from GitHub - A good eye for UI/UX design and user-centric improvements - Attention to detail to ensure the app functions correctly after modifications.

    $20 (Avg Bid)
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    15 ofertas

    I'm seeking an expert Java Spring Boot developer to assist me with an industrial monitoring project that utilizes MQTT IoT. This project encompasses several core components of the IoT application, from device connectivity and data collection to designing a user-friendly monitoring dashboard. Key responsibilities include: - Implementing robust device connectivity and management within the MQTT framework - Developing effective data collection and processing mechanisms to support the monitoring system - Collaborating on UI/UX design for an intuitive and informative monitoring dashboard I require someone with extensive experience in Java Spring Boot and prior involvement with IoT projects. Familiarity with MQTT and industrial monitoring is a major plus. A commitment to quality, collabor...

    $130 (Avg Bid)
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    11 ofertas

    Enhance an existing accountancy website by integrating advanced features to improve functionality and user engagement. Scope of Work: - Integrate a database for various fee packages and pricing options. - Develop an online sign-up process for seamless user registration. - Set up an online DD system - Integrate scheduling tools such as Calendly. - Develop a secure client login area by integrating Accountancy Manager. - Implement additional tweaks and changes to enhance the website. Additional Information: - Open to creative IT solutions and ideas for website development. - New ideas for website enhancements are encouraged.

    $14 / hr (Avg Bid)
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    59 ofertas
    Python Audio Call System 6 días left
    VERIFICADO

    I'm in need of a Python expert to create a SIP-based audio call system that works within a local network. The system should support only one call at a time, but should also include voice activity detection, noise suppression, and echo cancellation features. Key requirements: - Development of a SIP-based audio call system using Python. - The system should support only one call at a time. - Implement voice activity detection, noise suppression, and echo cancellation. Ideal Skills and Experience: - Proficiency in Python and SIP protocol. - Experience in developing audio call systems. - Knowledge of audio processing techniques. - Familiarity with voice activity detection, noise suppression, and echo cancellation technologies.

    $4 / hr (Avg Bid)
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    17 ofertas

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