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:

  • Developing custom GUIs for existing codebases
  • Creating encrypted, secure crypto apps
  • Designing cross-platform audio merging tools for mobile devices
  • Building sophisticated trading bots for the cryptocurrency market
  • Implementing open-source virtual machines in C
  • 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

Hiring Java Developers on Freelancer.com gives you access to a global pool of talented professionals who can deliver high-quality solutions tailored to your needs. Our platform makes it easy and convenient to find, hire, and collaborate with skilled Java experts from around the world. So why wait? Bring your ideas to life by posting your own project and hiring a Java Developer on Freelancer.com today!

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    I'm looking for a professional who can design and develop a mobile AI chatbot for my company. Key Requirements: - The chatbot should be able to answer customer queries effectively, and be equipped to provide live data video or pictures when necessary. - It should be compatible with Whatsapp. - The mobile app should have voice and image recognition capabilities, as well as support for multiple languages. What I'm Looking For: - Experience in developing advanced AI chatbots, with a preference for those that have been integrated into mobile applications. - Proficiency in voice and image recognition technologies. - Proven track record of creating multi-language support systems. This project is ideal for someone with a strong background in AI and mobile app development. A portfol...

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    Urgent Android App Development 6 zile left
    VERIFICAT

    In need of a skilled Android app developer who can immediately start on my project. The platform focus is Android only. Though I have not specified particular functionalities, I would welcome proposals with suggestions for useful features. Ideal skills and experience: - Proficient in Android development - Creativity in suggesting features - Ability to start working immediately - Good communication and understanding of client needs Please note, time is of the essence and I am looking for someone who can start working on the project right away.

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    Hola, necesito un desarrollador con mucha experiencia en Java, C#, Python y Socketweb - con la capacidad de crear y resolver problemas con fácil comprensión de códigos. El resto de los detalles se entregarán al desarrollador correcto.

    $218 (Avg Bid)
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    Hello, I need a developer with a lot of experience in Java,C#, Python and Socketweb - with the ability to create and solve problems with easy understanding of codes The rest of the details will be given to the correct developer

    $124 (Avg Bid)
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    I'm in urgent need of a skilled backend developer proficient in Java, who has experience in developing ecommerce projects. Additionally, I require a Python developer with experience in web scraping. Key Requirements: - Java Backend Development: You should have a strong understanding of Java and have previously worked on ecommerce projects. Understanding of user service, catalogue and payment functionalities is critical. - Python Web Scraping: Experience scraping websites is essential. You should be able to collect data efficiently from different web sources. Time Frame: The project needs to be completed ASAP. Ideal Candidate: - Proficient in Java and has experience in developing ecommerce projects - Proficient in Python and has experience in web scraping Please reach out if you f...

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    Are you a Backend Developer or aspiring Intern looking to make a significant impact in the world of affiliate marketing? Join our ambitious startup and work alongside experienced co-founders who have worked with industry giants such as Meta, Verizon, MakeMyTrip, GoIbibo, Airtel, Ola, and Samsung. This is your chance to contribute to an innovative project while gaining valuable experience and honing your skills. About Us: We are a passionate and ambitious startup working on an exciting idea in the affiliate marketing space. Our goal is to revolutionize the industry by creating a cutting-edge platform that empowers marketers and drives unprecedented results. With experienced co-founders who have successfully led teams in renowned companies, we bring together a wealth of expertise and a driv...

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    I'm looking for a highly skilled full stack developer who is proficient in creating complex database queries, particularly in SQL. Even though the ideal candidate will mainly work on backend using Java, APIs, and cloud hosting, experience building front-end using technologies such as React, Angular or Vue.js is required. THIS IS BOTH BACKEND AND FRONT END PROJECT. The core responsibilities for this position involves: - Designing, coding, and debugging applications in Java. - Performance tuning, improvement, balancing, usability, automation using cloud hosting. - Being proficient in SQL for advanced database management and queries. For a successful application, please include: - Your past work and projects, especially those related to Java and SQL. - Detailed write-up about your ...

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    We are seeking an experienced Oracle Apex Developer to work on an Oracle Apex Cloud project involving SOAP API integration. The main focus will be implementing a SOAP API call within the Oracle Apex environment and creating a simple report template to display data from the SOAP API. Ideal candidates should have: Proven experience with Oracle Apex. Strong understanding of integrating SOAP APIs in Oracle Apex Cloud. Ability to create reports from SOAP API data.

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    I am in need of a Java developer with expertise in Spring MVC and JWT tokens. This project calls for a professional who can implement a JWT token system with a refresh token mechanism. Key Project Requirements: - **JWT Token Implementation**: Your primary task will be to set up a powerful JWT token system that can handle both authentication and authorization. - **Token Refresh Mechanism**: This token system should also include a refresh mechanism to ensure the security of our platform. - **Secure Communication**: Establish secure communication between the client and server to ensure data integrity. Additional Features to Implement: - **Role-Based Access Control**: I am looking to set up an access control system with different levels of access depending on user roles. - **Token Expirat...

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    I'm looking for a skilled software developer who's proficient in Python, Java, and C++ to create a software program from scratch. Key Requirements: - Proficiency in Python, Java, and C++ - Experience in developing software applications - Ability to work on a project from inception to completion The main purpose of the program is to catch, store, and analyze data. The software will be used on a computer and should be designed for ease of use while maintaining robust data processing capabilities. You will be starting from scratch, meaning you won't be working with any existing code. This project provides a great opportunity for a developer who enjoys creating software from the ground up and who has a solid understanding of data processing.

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    Hello, I need a developer with a lot of experience in Java,C#, Python and Socketweb - with the ability to create and solve problems with easy understanding of codes The rest of the details will be given to the correct developer

    $505 (Avg Bid)
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    I am in need of a Senior Full Stack Developer with over 5 years of experience. The ideal candidate should demonstrate an expert proficiency in Python, Angular, HTML, CSS, Power BI, SQL (Snowflake, MSSQL), JavaScript, AWS Services, ORM, Linux, Git, Web Deployment, SSL, JWT, RESTful APIs, XML or JSON, TypeScript. Essential Skills and Experience: - 5+ years of experience in Full Stack Development - Proficiency in Python, Angular, HTML, CSS, JavaScript, TypeScript - Familiarity with Power BI and SQL (Snowflake, MSSQL) - Experience in AWS Services and Linux - Expertise in Web Deployment, SSL, JWT - Comprehensive knowledge of RESTful APIs, XML or JSON formats - Working experience with Git and ORM This highly challenging yet exciting role demands an individual able to work in a fast-paced,...

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    I'm in need of an accomplished Android developer to help create an app for offering a service. Your role will encompass not only the development of the app but also the UI/UX design and subsequent bug fixing. Key requirements: - The successful candidate should have a proven track record in Android app development - Strong experience in UI/UX design is a definite plus - You should be adept at troubleshooting and bug fixing Your application should highlight your experience in this field. I'm particularly interested in the apps you've been a part of, and the role you played.

    $11 (Avg Bid)
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    I'm looking for a database expert who can help me implement a masking technique for sensitive data in MySQL. Key Points: - Types of Sensitive Data: The solution should focus on masking Social Security Numbers, Credit Card Numbers, and Email Addresses. - Approach: I would like the data to be securely stored using a Hashing mechanism. - Database System: The project will involve working specifically with MySQL. The ideal candidate should have a deep understanding of database management, data security and Hashing techniques. Experience with data masking and MySQL is crucial. The project requires a meticulous and thorough approach to ensure that all sensitive data is properly masked and secured in the database.

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    We have fully functional flutter printing we need to change the code into android with new sdk(Java) Integration. No extra integration required except above mentioned SDK.

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    For this role, I'm urgently seeking an experienced Java Developer, though a specialization in Java SE, Java EE, or JavaFX is not necessary. At this time, a broad understanding of Java, rather than specific Java skills, is most crucial. Key Requirements: - Proven Java development experience is vital, as it'll aid in current project requirements. - Knowledge of specific APIs or libraries to extend capabilities and integrate systems. When applying, kindly provide the following: - A summary of your Java developer experience - Articulate your knowledge and usage of specific APIs or libraries. Looking forward to connecting with experienced and knowledgeable Java experts for a swift project execution.

    $389 (Avg Bid)
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    Drowsiness Alert Driver App 6 zile left
    VERIFICAT

    I am seeking a proficient mobile app developer to build a simple Android application that helps detect driver drowsiness using the availble open source codes. Key Features: - The app primarily serve to alert the driver when signs of drowsiness are detected no need for extra features - Utilize facial recognition technology to detect the early signs of fatigue.

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    I'm in need of a skilled Android developer to create an educational technology (edtech) app. The primary function of this app will be to deliver online courses. Key Features: - Payment processing: Incorporating a secure and efficient payment processor is crucial. The app will be monetizing the online courses, thus an easy-to-use payment interface for users is required. Ideal Experience and Skills: - Android Application development: Proven experience in developing Android apps is necessary. - Integration of Payment processing system: Experts with prior experience in incorporating payment functionalities are preferred. - EdTech domain knowledge: Understanding the nuances of online course delivery would be advantageous. This task calls for a creative thinker who can deliver a user-...

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    I'm looking for an experienced web crawler developer to build a tool for me. This tool needs to be able to extract text content and links from various websites. I need data from the whale watch section of The full crypto address within the links should be associated with their name counter part in a spreadsheet or organized file. I have included a highlted picture demostrating the fields I need. They should be done for the full 6 pages. Requirements: - Experience: Please detail your experience in web crawling and provide examples of previous work. - Delivery: The extracted data should be delivered in a spreadsheet file. It's crucial for the freelancer to have in-depth knowledge of web scraping and data extraction. The tool should be efficient and robust, capable of handl...

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    Android App Startup Crash Fix 6 zile left
    VERIFICAT

    i am using a android lib in my project which is crashing Key responsibilities for this project include: - Investigating the root cause of the issue - Implementing a robust solution to resolve this issue - Testing the app thoroughly to ensure that the fix is successful Ideal skills and experience for this project include: - Proficiency in Android app development - Experience in diagnosing and resolving app crashes - Strong knowledge of best practices for app stability and performance - Ability to work efficiently and effectively to deliver a high-quality solution

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    I'm seeking a Java expert to resolve issues with a call detection library. The specific problems include: - Call detection not functioning correctly - Frequent crashes This project is specifically for Android 11 and above. The library should be debugged to ensure that it operates properly on these devices. An ideal candidate would: - Have extensive experience in Java, particularly in Android development - Be proficient in debugging and resolving software issues - Understand the nuances of Android 11 and later versions, specifically regarding call detection

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    Hello. I have some android APP and need to make some simply changes -date and time change from ENG to PL_locale -currency changes After that will upload new tasks

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    Android Rummy App Development 6 zile left
    VERIFICAT

    I'm looking for a skilled Android developer to create a Rummy app that will cater to the gaming market. The app will specifically focus on the Indian Rummy game variant. Key Features: - The primary focus of the app will be on the gaming experience, so it's important that the interface is intuitive and engaging. - The app must support player interaction. This could be through chat systems, friend lists, or other related features that enhance the gaming experience. Ideal skills and experience for this job include: - Proficiency in Android app development, with a strong portfolio of previous projects. - Experience in developing gaming apps will be highly beneficial. - Knowledge of implementing player interaction features in apps, such as chat systems or friend lists. If you'...

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    Android app 6 zile left

    I need a simple mathamatics app ab is two values ab compair with c value then final value d is show as answer (result?

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    I'm searching for a proficient app developer to design an Android mobile app with functionalities for in-app purchases. Key Responsibilities: - Develop a user-friendly Android app - Implement an in-app purchase function Ideal Candidate: - Previous experience creating Android applications - Experience implementing in-app purchasing functionality - Strong understanding of Android's design principles and interface guidelines - Proficiency in coding and strong debugging skills. Your proposal should showcase your experience with Android development and in-app purchases. Please include samples of your previous work.

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    I'm seeking a highly skilled mobile application developer to build a ride-sharing app for both iOS and Android platforms. This app will aim to bridge the gap between drivers and passengers for intercity commuting. Key Features: User-Friendly Interface: IntercityRide offers an intuitive interface facilitating effortless ride booking and offering. Users can easily browse available journeys, view driver profiles, and book seats with just a few taps. Real-Time GPS Tracking: With our advanced GPS tracking feature, passengers can track the real-time location of their driver throughout the journey. This ensures transparency and provides peace of mind, especially for passengers traveling alone. Secure Payment System: IntercityRide incorporates a secure payment system for seamless transact...

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    I'm in need of a professional to develop a Linux-based barcode printing application that supports both QR codes and 1D barcodes. The application must also be capable of importing data from Excel/CSV files. Key Components: - A Linux-based application: The application should be specifically designed to run on Linux operating system. - QR Codes and 1D Barcodes: The barcode printing application should support both QR codes and 1D barcodes. - Excel/CSV data import: The application should be able to import data from Excel/CSV files for generating barcodes. Ideal Skills: - Proficiency in Linux application development. - Experience with barcode generation and printing. - Ability to work with Excel/CSV data import. - Understanding of QR codes and 1D barcodes. If you have prior experience ...

    $164 (Avg Bid)
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    Hello, I need a developer with a lot of experience in Java,C#, Python and Socketweb - with the ability to create and solve problems with easy understanding of codes The rest of the details will be given to the correct developer

    $520 (Avg Bid)
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    I'm looking for a skilled developer to add a two-factor authentication (2MFA) system to my desktop Java application, primarily focused on login authentication. Must be built on NetBeans. Using SOLID principles. Key Requirements: - The primary platform for the app is Windows, so the 2MFA implementation must be compatible with this OS. Ideal Skills and Experience: - Proficiency in Java and a strong background in desktop application development. - Expertise in implementing security features, specifically 2MFA. - Prior experience in designing and integrating desktop applications in a Windows environment. Please provide examples of similar projects you've worked on, especially those with 2MFA implementation.

    $159 (Avg Bid)
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    Jr. Full Stack Developer 6 zile left
    VERIFICAT

    Below is the job description for the Junior Full-Stack Developer position we are looking to fill: Proficiency in Programming Languages: Must be skilled in Node.js, Java, ReactJS, and Docker. Frontend Development: Should have extensive experience with TypeScript/JavaScript and be adept in modern frameworks like React. Backend Expertise: A deep understanding of the Spring Boot framework is crucial. Database Knowledge: Experience with database systems such as PostgreSQL and DynamoDB is required. API Development: Demonstrated ability in developing applications with REST API and GraphQL backends. DevOps Skills: Capable of designing and implementing CI/CD pipelines. Cloud Expertise: Knowledge of AWS cloud services and architecture is essential. Problem-Solving: Must possess excellent ana...

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    I am currently looking for an Android mobile application developer to create a prayer time app using Java. The major functionalities of this app include prayer time notifications and a compass indicating Qibla. We want to implement an ANDROID application “Prayer notifier” which would notify the user when the prayer time enters. The following are the Prayer notifier app supported features: *Find out the prayer timings of your city. *Configure and activate actions to all prayers’ times or a specific prayer time. *Trigger prayers time custom actions like playing short Athan sound, receives mobile notificationsetc. *Configure and adjust prayers times based on location input, time zone and different prayers calculation methods. *Find out the direction of Qibla using a compass...

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    I have a prediction model in JSON format that I need to convert into Pix4D format. The primary reason for this conversion is to make it compatible with DJI Terra for drone mission setting. Key Requirements: - Convert entire JSON file into Pix4D format. - Ensure full compatibility with DJI Terra for drone mission settings. Ideal Freelancer: - Proficient in JSON and Pix4D formats. - Experience with DJI Terra and drone mission settings. - Excellent understanding of the requirements for successful model conversion.

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    I'm in need of an experienced Android Studio Developer with fluency in Java. We want to implement an ANDROID application “Prayer notifier” which would notify the user when the prayer time enters. The following are the Prayer notifier app supported features: *Find out the prayer timings of your city. *Configure and activate actions to all prayers’ times or a specific prayer time. *Trigger prayers time custom actions like playing short Athan sound, receives mobile notificationsetc. *Configure and adjust prayers times based on location input, time zone and different prayers calculation methods. *Find out the direction of Qibla using a compass to offer praying in the correct direction. Skills and Experience Required: - Expertise in Android Studio - Proficiency in Java ...

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    We are seeking an experienced Oracle Apex Developer to work on an Oracle Apex Cloud project involving SOAP API integration. The main focus will be implementing a SOAP API call within the Oracle Apex environment and creating a simple report template to display data from the SOAP API. Ideal candidates should have: Proven experience with Oracle Apex. Strong understanding of integrating SOAP APIs in Oracle Apex Cloud. Ability to create reports from SOAP API data.

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    I am on the lookout for an Oracle Apex Developer capable of executing a development project on Apex Cloud. Your task will primarily encompass: - Implementing Call Soap API function in the Apex Cloud environment. Proficiency in Oracle Apex and a profound understanding of integrating API in the platform are crucial for this project. Past experience in a similar project would be highly beneficial.]]

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    I'm seeking a skilled developer to help me create a seamless integration between my Quickbooks account and various platforms using a Node.js application. MUST HAVE QUICKBOOKS ONLINE APPLICATION DEVELOPMENT EXPERIENCE.

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    Invoice software 6 zile left
    VERIFICAT

    Hello, I need a software to make invoices

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    Modificar código 5 zile left
    VERIFICAT

    Hola, tengo un código y necesito un programador que me haga algunas modificaciones: Quiero adaptarlo para generar un PDF con una vista previa según los datos que he completado y qué a través de un link lo pueda enviar y salga un campo abajo para fírmalo. Tengo las funciones solo es adoptarlo. Quiero una persona que hablen español para explicarle mejor por un meet y podamos empezar de inmediato Deseo alguien que pueda empezar de inmediato a modificar el código. Presupuesto de 40$ a 60$ netos.

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    I've previously dabbled in Apache Beam and am looking for a tutor to guide me in its application with the Pubsub Sink in Java. I'm at a beginner level in Java and my primary goal is to grasp the fundamental concepts of Apache Beam for Pubsub Sink operations. Key requirements include: - Teaching basic Apache Beam principles, especially in the context of Pubsub Sink - Assisting me with Java programming as I aim to apply these concepts - Clarifying any uncertainties I have regarding Apache Beam, Java, and Pubsub Sink using Pipeline - Providing practical examples and exercises to reinforce my learning Given my current skill level and learning objectives, I'm seeking a patient and knowledgeable tutor who can break down complex concepts into simple, understandable parts. Your a...

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    As the ideal candidate for this project, you will be proficient in Python and JavaScript and have proven experience in the development of machine learning classification platforms. Key Responsibilities: - Implementing and managing data preprocessing - Overseeing model training - Model evaluation - User authentication - Ensuring data security - Enabling scalability - Providing API access It is crucial that you can design a platform with a user-friendly interface and responsive design. Your role will involve translating our requirements and objectives into a functional and eye-catching strategy. This is a project - and potentially long-term role - reserved for a dedicated full-stack developer with an eye for detail and a passion for delivering high-quality outcomes.

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    I'm in need of an expert who can install a music streaming script on my platform. The script I'm looking for needs to have user registration and login, search and browse functionality, and playlist creation and management. It should seamlessly work on web browsers, Android devices, and iOS devices. Key requirements: - Installation of a music streaming script with user registration, login, search, browse, and playlist features - Ensure compatibility with web browsers, Android devices, and iOS devices - Integration of PayPal as the sole payment option The ideal freelancer for this project should have a solid understanding of: - Music streaming scripts - Mobile and web app development - PayPal integration - UI/UX design for cross-platform compatibility. Experience with similar p...

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    I need a tool using Microsoft Powershell that can fetch security patches and patch release information from the internet for various OS levels and applications using vendor websites. The tool should be able to download the patches and store them locally along with information about the patch such as release patch source, OS type, software impacted, software name, software description and the patch name and severity level. Key requirements: - Fetching security patches for various OS levels and applications using vendor websites. - Downloading patches for specific applications only. - Storing the downloaded patches locally. - Collect patch information patch source, OS type, software impacted, software name, software description and the patch name and severity level - collect security hash f...

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    I require a specialist to integrate Phonepay SDK into my Android application to facilitate in-app purchases. This demands a comprehensive understanding of the Phonepay SDK, as well as expertise in Android app development. Here's what I need: - Integration of Phonepay SDK into my Android app for secure and seamless in-app purchases. - Guaranteed functionality after integration, with purchasers having a smooth, error-free experience. Ideal Skills and Experience for the Job: - Experience with Phonepay SDK - Proficient in Android app development - Knowledgeable in integrating payment gateways - Proven record in similar projects. The ultimate goal is to deliver a user-friendly application capable of safe and efficient in-app purchases via Phonepay SDK. If you are up for the challeng...

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    I'm seeking a proficient app developer to create an Android application for hotel and flight booking. This multi-functional app should seamlessly incorporate some key features: - Quick Booking: Needed to ensure a user can book their flights and hotel swiftly, making the process user-friendly and efficient. - User Reviews: Allowing users to leave opinions and insights on the chosen hotels and flights. This encourages community interaction and is a confidence booster for new users. - Fare Comparison: Offering users an opportunity to compare fare prices from different sources to improve cost-effectiveness. In addition, integration with popular payment gateways is a must to offer users a variety of accessible and secure payment options. The perfect candidate for this project has a stro...

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    I'm in need of a skilled mobile app developer to create a Conversational AI app for both iOS and Android platforms. Job Title: Lead AI/ML Engineer for Avatar Development Location:Remote Job Type: Part-Time Role Summary: We are seeking an experienced Lead AI/ML Engineer to spearhead the development of a cutting-edge mobile application that creates and interacts with AI-powered avatars based on user-uploaded multimedia content. The ideal candidate will have a strong background in AI, machine learning, and software development, with specific experience in NLP, image processing, and real-time systems. Key Responsibilities: - Design and implement machine learning models to analyze and learn from multimedia content to create personalized avatars. - Develop real-time intera...

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    I need a proficient software developer who will assist me in creating a mobile application dedicated to a convenient search engine. The application should be compatible with both Android and iOS. I have access to an sdk for the big data of the app that will make the app faster. Responsibilities include: - Designing and developing the mobile application - Ensuring compatibility with Android and iOS - Creating an efficient and user-friendly search engine Ideal skills and experiences: - Proficiency in software development, specifically in mobile applications - Familiarity with Android and iOS platforms - Experience in creating search engines - A strong grasp of user experience design to optimize searchability and accessibility.

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    I am looking for a talented developer who can help me integrate JWT with Spring Security. This project is primarily aimed at securing our REST APIs. I intend to use both Keycloak and Spring Security in order to achieve this goal. The REST APIs we're working with need a strong level of security. We require both Token-based authentication (JWT) and OAuth2 authentication to be implemented. The ideal freelancer for this project should have: - Proficiency with Keycloak and Spring Security - A strong understanding of REST API security best practices - Experience with integrating Token-based authentication (JWT) and OAuth2 - Ability to implement a robust security system that can handle the complexities of our platform. If you have relevant experience and are confident in your ability...

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    I am in need of a proficient developer who can create a trading bot for me that can work on decentralized exchanges, specifically Raydium. Key Project Details: - The trading bot should be able to execute trades on the Raydium decentralized exchange. - It should be designed to work autonomously, making informed decisions based on predefined parameters that I will provide. - I'd like the bot to be efficient, reliable, and capable of handling high-frequency trading. Ideal Applicant: - Proficient in programming languages typically used for trading bots development (e.g. Python, Java, C++). - Experience in developing bots for decentralized exchanges, particularly Raydium. - Understanding of algorithmic trading principles, market dynamics and risk management. - Must be able to deliver thi...

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    Hello, I need a developer with a lot of experience in Java, Python and Socketweb - with the ability to create and solve problems with easy understanding of codes The rest of the details will be given to the correct developer

    $128 (Avg Bid)
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    30 oferte
    Java Spring Boot Development 5 zile left
    VERIFICAT

    I'm in need of a skilled Java Spring Boot developer to create a web application for me. The project has to be completed within a month. Key Requirements: - Proficient in Java and Spring Boot - Experience with web application development - Ability to work diligently to complete the project within the specified timeline. I have not decided on the database technology yet, so I am open to suggestions. However, if you have a recommendation or specialization, I would like to hear it. Time Management: It's crucial that the freelancer I hire can manage their time effectively and prioritize my project. This is a time-sensitive task that requires commitment to meeting the deadline. Post-Completion Support: After the project is complete, I may require some support with the applicatio...

    $20 / hr (Avg Bid)
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