Java Jobs
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!
Dari 268,160 ulasan, klien menilai Java Developers kami 4.84 dari 5 bintang.Rekrut Java Developers
I am seeking an experienced Android Studio developer to aid me in resolving an issue with my existing application. A section of my user base is encountering a blank screen when they attempt to access the "History & Search" feature from the dashboard. Interestingly, this issue is only observed for specific versions of the operating system, and seems consistent among clients who are all running the same version of Android. Key responsibilities: - Diagnose the root cause of the blank screen issue. - Develop and test a fix to ensure the app functions as intended across all Android versions. Ideal Candidate: - Proven experience in Android development, particularly with Android Studio. - Strong knowledge of Android version compatibility. - Excellent debugging and problem-solving ...
I am looking to build an android based parking system. the system should scan/read Unicode (Hindi, Nepali) number plate and store against a time in an api and print the result and provide a QR code when checked in. When checked out, the system should scan the QR code and provide the. receipt of total parking duration and payment. The API is created , so we just need the android app
I have a project that requires an experienced and fast Android app developer. The app has 18 screens and needs to be completed within 5 days. I will provide both the API and designs for the app. we need 18 screens functionality coded in Android which has digital/animation of Map. we will give designs in Figma. Time Urgent Figma Design and API will be provide with clear instruction. Key Requirements: - Rapid development: The deadline for this project is non-negotiable. The successful candidate must be able to deliver within the specified timeframe.
I'm looking for a skilled Android app developer to create an app that has a primary function of maintaining privacy. The app may require user authentication, so the ability to implement secure login functionalities will be beneficial. Key requirements: - Developing an Android application with a strong focus on user privacy - Implementing necessary functionalities for a private application Ideal skills and experience: - Proven experience in Android app development - Familiarity with implementing user authentication - Understanding of privacy-focused app design and development.
I am looking for a skilled developer or team to integrate WhatsApp Business Cloud API with my existing application. The core functionalities I aim to implement include: • Scheduling of messages: My system should be able to populate and send messages at predefined times. • Real-time communication updates: I need the app to relay notifications instantly when messages are received and seen. Given that the existing application is built on a Web platform, an ideal candidate for this job would have extensive knowledge and experience with Web development and protocols, cloud services API integration, and specifically experience with WhatsApp Business Cloud API. Familiarity with systems that opt for no specific platform will also be useful. Please apply with relevant examples of you...
We are seeking a skilled individual who is proficient in using the Google Play Console to publish apps. As our app developer, you will be responsible for uploading, managing, and optimizing our app listings on the Google Play Store. Responsibilities: 1. Utilize the Google Play Console to upload new app versions, including APK files, screenshots, descriptions, and other necessary assets. 2. Ensure compliance with Google Play policies and guidelines to prevent app rejection or suspension. 3. Manage app metadata, including titles, descriptions, keywords, and categories, to optimize visibility and searchability. 4. Monitor app performance metrics, including downloads, ratings, and reviews, and implement strategies to improve user engagement and retention. 5. Collaborate with the development ...
I am looking for a skilled web developer to create an e-commerce website for our company to sell various types of products, due to confidentiality, details about the products will be given later. I aim to offer my customers a user account functionality, allowing them to save their information for a more convenient shopping experience. Main Features: - User account creation - Secure payment gateway integration Skills and Experience: It would be ideal if applicants have experience in: - E-commerce website development - User account functionalities - Integrating secure payment gateways Please, provide examples of similar projects you have worked on. Application without examples will not be considered.
I'm looking for a talented Android developer to build an app that will have a very specific purpose: to open URLs copied from the system device in a fullscreen webview interface. Key Features: - URL Handling: The app should automatically recognize and open URLs that have been copied on the device. - Webview Interface: The opened URLs should be displayed in a simple, clean webview. Ideal Candidate: - Proficient in Android app development - Experience with webviews and URL handling - Familiarity with minimalist UI design - Prior experience in similar projects would be a plus The ultimate goal is to offer a straightforward, no-frills experience for users who want a quick way to view copied URLs without the distractions of a full web browser. If you're confident in your Android de...
Need an App in Android with one module with 10 screens. API and figma designs will be shared. Time 3 days
I recently changed the main domain name of our app. Because of this, I am seeking a developer to Update the API endpoints related to the domain name for both the Android and iOS versions.
I'm looking for a Java expert who can help me with some tasks related to Java programming. This includes Intellij and Maven. And you must have expertise on 'Java patterns' and 'Java swing' I will share more details over chat. Thanks!
I am looking for a comprehensive bakery management system with an integrated Android app. This project aims to streamline our bakery's operations, enhance customer service, and facilitate payment processes. Key requirements include: - Order Management: The system should facilitate order creation, tracking, and notifications. I need a customer notification feature to update clients on the status of their orders. Additionally, the system must support delivery scheduling to optimize our delivery process and customer satisfaction. - Inventory Management: The system should provide real-time inventory tracking, automatic reordering, and product categorization functionalities. This will help us keep track of our bakery items, ensure we never run out of stock, and improve our overall invent...
Key Responsibilities: Develop, code, and manage a robust and scalable codebase for web and mobile applications. Architect and program backend solutions while integrating with various cloud hosting platforms like AWS and Digital Ocean. Design and deploy modern frontend user interfaces using the latest UI design kits and technologies. Build secure, scalable mobile app REST APIs. Implement and manage databases using MySQL and NoSQL. Utilize DevOps tools to monitor and scale applications effectively. Requirements: At least 3 years of software development experience. Strong proficiency with LAMP and MEAN tech stacks, including extensive use of PHP, CSS, and JavaScript libraries/frameworks. Excellent command of English and ability to communicate effectively in chat. Availability to work between ...
I'm in need of a skilled developer to create a Java-based EPP interface for the IN Registry that will allow various domain functions to be carried out seamlessly. - **Domain Name Registration**: The interface should be capable of handling the registration process end-to-end. This includes: - The provision of a registration form that allows users to input necessary information for domain registration. - Implementation of a domain availability checker to ensure the desired domain is free for registration. - Enabling DNS management facilities to allow for efficient domain configuration. - **Domain Name Transfer**: The interface should facilitate smooth domain transfers. It should incorporate: - Mechanisms for generating and validating transfer authorization codes. - A system ...
I'm looking for a Java expert who can help me with some tasks related to Java programming. This includes: - Debugging and fixing the existing Java code - Optimizing the performance of the existing Java code I will share more details over chat. Thanks!
I'm in need of a developer skilled in Java 8 to create a Cformatter that's capable of processing both .c and .cpp files. It's essential that the formatter follows the Allman style conventions. Prior experience developing formatters is highly preferred. Key Requirements: - Strong Proficiency in Java 8 - Familiarity with Allman Style conventions - Ability to build a formatter that processes both .c and .cpp files - Prior experience in developing similar applications. An understanding of C and C++ can be beneficial. Expectations include clean, efficient code and timely delivery.
need python telegram bot expert to get deplopyed my app in heroku
I'm in need of a skilled software developer, experienced in SpringBoot in Java programming. The primary task is to build a web-based tool that will run as a desktop application specifically on macOS. Key tasks include: - Implementing REST APIs - Integrating external APIs, specifically desktop application APIs - Building a scheduler for email notifications using cron jobs - Configuring batch process tasks Ideal candidate should be proficient in: - Java programming - SpringBoot framework - REST API development - Experience with desktop application APIs This is a great opportunity for a developer looking to work on a challenging and rewarding project.
I urgently require a Java proficient developer for an HRSD project. There's not clarity yet on the type of application or the main objective of the task as that was skipped during briefing. It's essential the developer isn't only skilled in Java but can help define project direction as well. Ideal skills and experience needed for the job include but are not limited to: - Expertise in Java development. - Prior experience in HRSD projects. - Capacity to define and influence project direction. - Good communication skills to report on project progress effectively.
I am seeking an eligible developer to build a high-fidelity prototype for an Android app using Kotlin, Java and Jetpack Compose. Key features I anticipate in the app include: - Writing unit tests to validate the code for ensuring smooth app functionality. The developer must work on a predefined design, fully functional prototype reflecting the actual app. I am interested in developers who have experience in Android development particularly with Kotlin, Java, and Jetpack Compose. Knowledge of unit testing is necessary.
I'm in need of a seasoned Python developer to create a program to scrape information from Telegram channels. The main purpose of this project is to: - Develop a Python program that can successfully extract all usernames from diverse Telegram channels. Given the nature of this project, it would be ideal if you possess extensive experience in Python programming. Understanding the operations and functionalities of the Telegram API is a prerequisite as well. This project requires a comprehensive grasp of web scraping principles and a consistent track record in data extraction tasks. Please bid if you are confident that you can deliver this Python program efficiently.
I am in need of an expert who can create a fully automated software installation for my phone. This software should be capable of completing levels in strategy games, which I find challenging to do myself. Key Requirements: - The software should be designed specifically for the genre of strategy games. - The main goal is to automatically complete levels. Ideal Skills and Experience: - Proven experience in creating automated software for mobile applications. - Proficiency in developing tools for specific game genres, especially strategy games. - Strong understanding of game mechanics and strategies, particularly in the context of level completion. The software should be user-friendly, reliable, and most importantly, effective in completing levels. Look forward to hearing from freelancer...
Create a script for a game called Ark Survival Ascended. I need someone to program either AHK or some kind of script that will automate things like gathering resources, collecting in game drops,etc. I can go more into detail about it. The bot will basically utilize teleporters in game named a certain way (example: the "bot" (your script) will collect metal will teleport to Metal tp 1 > metal tp 2 > metal tp 3..... so on and at the end of the sequence it will telport to a forge, grab all the material out of the tame and put in into forges like tping to forge 1 > forge 2 > forge 3 ...., then there will tp's to drops that spawn every 30 mins collect it, screen shot it and send it into discord. Any actions the bot does it should just send it into discord. Like I said...
We are seeking a talented freelancer to develop a comprehensive finance gadget locker app focused on EMI repayment management, along with additional features such as KYC verification, admin panel, promotions, and chat functionality. The app aims to help users effectively manage their loan or EMI payments while incentivizing timely repayments through a locking mechanism that restricts access to the user's phone in case of non-payment. Key Features: User Authentication: Implement secure user authentication methods such as PIN, pattern, fingerprint, or face recognition. Loan Account Linking: Allow users to link their loan or EMI accounts to the app, providing details like loan amount, repayment schedule, and due dates. Repayment Monitoring: Monitor users' repayment status, send no...
I need a professional who can help me with a simple task. I want to fork a piece of code from GitHub and dockerize it. The code is very basic, so this task should not take more than 1-2 hours to complete. Once the code is dockerized, I need it to be set up on AWS Fargate. Key Requirements: - Fork a simple piece of code from GitHub - Dockerize the code - Set up the dockerized code on AWS Fargate Ideal Skills and Experience: - Proficiency in Docker - Experience with AWS Fargate - Experience with GitHub - Understanding of basic programming concepts
I need an experienced mobile application developer skilled in both Android and iOS application development to create a reliable, user-friendly and efficient application that provides automatic spam message blocking and word filtering. Briefly, the working logic of the application is as follows: only the words that are wanted to be blocked will be written. If these words are included in the incoming SMS, it will be blocked as spam. Key Features: - The app should work on both Android and iOS devices. - The main purpose of the application is to block spam messages and filter out unwanted words. - The blocking process needs to be automated; a user should not need to manually block each spam message or unwanted word. Ideal Skills and Experience: - Proficient in Android and iOS app developmen...
I need a CPLEX expert to develop an optimization program with a focus on binary integer linear programming. This program will be used to determine the best possible solution from a set of possible decisions. Key Requirements: - Optimization Focus: You will be required to design the program to optimize a specific objective. - Processing Data: The program must be able to handle binary integer linear programming data effectively. - Constraint Management: The program must be able to handle maximum/minimum constraints, equality constraints, and inequality constraints. Ideal Skills: - Proficiency in CPLEX: Expertise in using the CPLEX software to optimize programming problems. - Mathematical Optimization Knowledge: A strong background in mathematical optimization techniques. - Problem-Solving ...
I am looking for an artificial intelligence developer to develop a cybersecurity module using the famous vulnerability logging site CVE As the model is trained on all web vulnerabilities and server vulnerabilities presented, then we provide it, for example, with our website, so it searches for gaps or security problems. Then it gives us reports with the severity rating of the vulnerability, whether inside the server or on the site itself This is a CVE database that the freelancer choosing for this topic might benefit from The model must be highly developed and highly trained
I am seeking a freelancer to develop a system for comparing prices of different products across various e-commerce websites. The requirements are outlined below: - The system must automatically pull and update product pricing information from multiple online sources. - The application should identify and clearly highlight any price differences. - An intuitive interface that enables easy viewing and understanding of the price comparisons is preferred. - The ability to handle with cases such as CAPTCHA, implementing delays upon request, and to avoid being blocked. It would really help if you have prior experience in the e-commerce sector along with skills in web scraping, data mining, and automation. Familiarity with APIs of popular e-commerce platforms like Amazon, eBay, or Alibaba will be...
I'm currently seeking a seasoned coding instructor who can cater to advanced students. The syllabus should encompass Python, JavaScript, and Java - the three languages that need proficiency in. A central part of the teaching approach should be focused on: - Imbuing advanced techniques and methodologies - Acquiring a comprehensive understanding of all three languages - Fostering independent learning and debugging capabilities Successful candidates ideally should have: - Prior experience as a coding teacher - Proficiency in Python, JavaScript, and Java - Proven track record with advanced students.
Description: We are looking for a skilled Python developer with experience in machine learning and data science to help with a project involving sign language translation. The project is built using Jupyter notebooks and several Python scripts that integrate TensorFlow, scikit-learn, and other libraries. Responsibilities: make a tutorial how to run this project the sign to text part only Proficiency in Python and familiarity with Jupyter notebooks. Strong background in machine learning, particularly with TensorFlow and scikit-learn. Ability to troubleshoot and debug complex codebases. Excellent problem-solving skills and attention to detail. Good communication skills and ability to provide clear documentation. Project Duration: This is a short-term project expected to few hours , depe...
The main purpose of this project is to broaden the mining capabilities of my current setup. I would like to have an efficient algorithm implemented that is capable of converting existing hashing power to mine using the SHA-256 algorithm. This would allow me to increase the diversity of my mining operations. Key requirements for this project include: - Developing an algorithm that can convert hashing power automatically - Primary focus on SHA-256 algorithm - Emphasis on compatibility across different systems rather than speed or energy efficiency Ideal candidates for this project will have a strong background in algorithm development, specifically relating to cryptocurrency mining. Familiarity with different mining algorithms, particularly SHA-256, is absolutely essential. Lastly, having ...
I am looking for an experienced programmer to design and test a program for analyzing the binary options market, utilizing the Pocket Option API. The program should be developed in JavaScript and HTML and run locally on a laptop without the need for cloud services. Project Requirements: Integration with the Pocket Option API. Automated opening of "up" or "down" positions based on predetermined predictive algorithms. 97% positive outcomes from positions executed by the system. Scope of Work: Designing and programming the software. Comprehensive testing of functionality before final delivery. Optimization for performance and stability.
I'm looking for skillful developers to create a currency exchange system, specifically for the United States Dollar (USD). The system must: - Display Live currency rates - Facilitate Secure transactions - Enable creation of User accounts Experience in financial software development and an understanding of online banking services would be beneficial for this project. Knowledge of secure payment gateways is crucial to ensure secure transactions within the system. Proficiency in developing dynamic and user-friendly interfaces is essential for the user accounts' feature. Your expertise will help us deliver a reliable and secure platform for currency exchange. Se requiere un sistema de escritorio que realice la funcion de cambio de dolares en JAVA con conexion a base de datos mysql...
I am looking to develop an AIOPS system that primarily focuses on user behavior logs for proactive monitoring. Here's a brief outline of my requirements: - The main objective is automated incident management, efficient anomaly detection, active threat detection and generating tailored training programs to teach the solution. - The system should exclusively work with user behavior logs. Ideal candidates will have a proven track record in implementing similar systems and should have extensive experience working with AIOPS systems, threat detection, and manual neutralization strategies. Knowledge and experience with user behavior logs will be a significant advantage.
I'm looking to create a point of sales (POS) admin app, oriented for retail sales personnel. Primary functionalities required for this application are: - Sales Management: The app needs to have capabilities to manage and monitor sales records efficiently. - Inventory Tracking: Along with sales, the application should aid in a hassle-free inventory tracking process. The application, being standalone, does not need integration with any existing Customer Relationship Management system. I aim to use Quarkus for backend, keycloak for authentication, Ant design () for frontend and postgre for DB . Hence, proficiency in these technologies will be ideal for this project. Previous experience in creating retail-oriented POS admin applications would also be a great advantage. if you want to ...
I'm looking for an experienced IT professional who can assist with both developing a custom software and providing consulting services. Key Requirements: - Custom Software Development: The primary task is to develop a unique software tailored to my business needs. - IT Consulting: I also need assistance with general IT consulting, to help streamline and optimize my IT infrastructure. Ideal Skills and Experience: - Proven experience in custom software development, ideally for business applications. - Strong background in IT consulting, with the ability to provide strategic guidance. - Expertise in iOS development as the software will primarily target this platform. This project has the potential to evolve into a long-term IT support and development role.
I am seeking a full-time developer with expertise in Golang and Solidity to work on an existing project. Your primary responsibilities will include implementing additional features and functionalities to an existing Golang/Solidity project. Key Requirements: - Proficiency in Golang and Solidity is a must. - Experience in building decentralized applications and developing smart contracts. - Ability to work full time and to be dedicated to the project. Ideal skills: - Knowledge of blockchain technology and its applications. - Strong problem-solving and critical thinking skills. - Proficiency in JavaScript and Node.js is a plus, but not mandatory. This is a great opportunity for a skilled developer to join a dynamic team and contribute to an exciting project in the blockchain space. If y...
I'm on the look-out for proficient Java Developer with deep understanding of Linphone SDK. Given the information gap on my end, I'd prefer if he/she could recommend the most suitable Linphone SDK version for audio calls. Do note, my project demands specific focus on audio calls only. A background working with similar features would be valued. Recommendations on any additional features could be discussed. Let's chat if you have the expertise I need in order to make this a success.
Hello, I'm in need of a developer capable of creating a tool to store data in bulk and automatically remove duplicates each time new data is added to the existing database. Storage of large datasets: The tool should allow for storing a large quantity of data. Duplicate removal: It should be possible to remove duplicates in the Excel files to maintain a clean and organized database. In addition to these features, it would also be necessary to be able to edit data in the tool and export the changes made to an Excel file. Furthermore, an archiving feature would be desirable, allowing for downloading of the used data for future reference. I would appreciate it if you could confirm whether you are able to develop such a tool and provide me with a quote at a reasonable rate. Thank you ...
I need an expert in Telegram bot creation to build me a bot with advanced sorting and resending functionality. Key Points: - The bot should be able to sort messages based on keywords or phrases, and resend them to a new group or channel. - The exact criteria for sorting should be solidified based on your expertise and recommendations. - Please ensure that the bot is able to handle this complex task efficiently and effectively. Ideal Skills and Experience: - Proficient in Telegram bot creation with a proven track record of creating bots with advanced functionalities. - Strong understanding of message sorting algorithms and experience in implementing such features in bots. - Ability to advise on and implement effective criteria for message sorting.
We are seeking a skilled software developer to create a custom invoice generating application tailored to our specific needs. The application will interface with a digital weighing scale to capture weight inputs, which will be used in conjunction with manually entered product prices to generate invoices for our clients. Our goal is to develop a user-friendly solution that streamlines the invoicing process and enhances efficiency. **Responsibilities:** - Design and develop an intuitive user interface for the invoice generating application. - Integrate functionality to capture weight inputs from a digital weighing scale. - Implement features for manual entry of product prices and quantities. - Develop logic to calculate invoice totals based on weight inputs and prices. - Ensure compatibili...
I'm seeking a skilled developer to create a user-friendly web application that securely stores passwords, generates strong passwords, and manages password accessibility. Description: Documentation centered around user-friendly password storage. Emphasis on simplicity, usability, and effectiveness. Web-based application featuring a modern and intuitive user interface. Requirements Analysis: Implementing secure session management, hashing, and salting passwords. Conducting input validation and sanitization. Utilizing a tool to assess password strength. Implementing user authentication and access control. Integrating a database for secure password storage. Algorithm of Proposed Solution: Designing a database schema tailored for password storage. Employing web technologies such as HTML,...
I'm in need of a developer capable of creating a browser extension that will automatically fill in One Time Passwords (OTPs) I receive on my mobile device. Here are some key details about the project: - The extension should function on both Google Chrome and Mozilla Firefox. - I currently do not have any extensions or add-ons related to auto-filling or password management installed on my system. - The Auto-fill function will primarily be used on E-commerce websites and Social media platforms. Ideal skills and experience for this job include: - Proficiency in JavaScript and browser extension development - Previous experience with OTP systems - Strong understanding of browser compatibility and web standards - Proven capability of building secure software. Your understanding of user...
I'm looking to hire skilled professionals for the development of an automated Telegram bot. The bot should be proficient in Chinese, as I am unable to communicate in English. Here are our basic requirements: - Sending Automated Messages: The bot should be capable of sending automated messages to users. - Replying to User Queries: It should be able to respond to user inquiries accurately and efficiently. - Collecting User Data: The bot should systematically gather and handle user data. - Card Dispensing: The bot needs to issue electronic cards, with an emphasis on checking card balance. The specifics will be discussed in greater detail during the project. - Unique Redeem Code Generation: The bot needs to generate unique redeem codes for users. The development of thi...
As a business, we are in the process of creating a backend system and require a Java Spring Boot Consultant to guide us through the development and integration stages. - Setting up Project Environment: Your role will be to set up the project environment, ensuring all the necessary tools and frameworks are installed and configured correctly. You should be comfortable working with Java Spring Boot and have a solid understanding of project setup. - Developing RESTful APIs: As the goal of this project is to create a backend system, the consultant we're looking for must have experience in developing RESTful APIs. You should be able to design and implement API endpoints that are efficient and scalable. - Integrating SQL Databases: In this specific project, we're focusing on SQL dat...
I'm looking for an Android developer to assist with the generation of an AAB file and its subsequent upload to the Google Play Store. Key Duties: - Generate AAB file: I need you to take care of the technicalities in creating and refining the AAB file for the Android App. - Upload to Play Store: I already have a Google Play Developer account. You'll be responsible for the successful uploading of the AAB file to the platform. Please note: - The app's functionality and content comply with Google Play Developer Policy. - There is no immediate need for you to be involved in the development of the app itself. Ideal Freelancer: - Proven experience in Android development. - Familiarity with the process of generating AAB files and uploading to the Play Store. - Communication sk...
I require expertise in mobile tracking specific to Android, with the focus on deep analysis of Whatsapp chats. - Data Extraction: The service should comprehensively extract media files that include photos, videos, and audio. Additionally, text messages and even deleted chat history need to be obtained. - Accessibility: I currently have physical access to the target Android device for the required setup or software installation. Ideal Skills: - Proficiency in Android OS and understanding Whatsapp functionalities. - Experience with data extraction and recovery. - Familiarity with mobile tracking and surveillance tools. Your task will be both challenging and sensitive, demanding utmost ethics and discretion.