Java backend developer jobs

**** DO NOT BLIND BID **** I am looking for an experienced PHP developer who also has background in UX/UI Design to assist with finishing a project, we have a custom a WordPress plugin and now just need make the output/layout beautiful. **** DO NOT BLIND BID ****

Memecoin Website & Staking Dashboard Developer We are seeking a talented and experienced Freelance Web Developer to design and develop an engaging website and secure staking dashboard for our new memecoin project. This is an exciting freelance opportunity to showcase your skills in cryptocurrency and decentralized finance. Project Overview: - Design a visually appealing and user-friendly website to promote our memecoin and engage the community - Develop a robust staking dashboard allowing users to manage their memecoin assets and staking activities - Integrate the website and dashboard with blockchain technology and smart contracts - Implement data visualization for real-time coin metrics and staking rewards - Ensure top-notch security practices to protect user funds an...

I'm seeking an experienced developer to aid in building 15+ AIs for a backend project using NestJS. The main focus is API development, with a particular emphasis on REST APIs. Key Responsibilities: - Create efficient and secure REST APIs - Integrate Payment Gateways, Social Media Platforms, and Cloud Storage Services via these REST APIs - Ensure a robust level of user authentication and authorization Ideal Skills and Experience: - Proficient in NestJS and AI technology - Extensive experience in REST APIs, including third-party integrations - Strong understanding of data storage, retrieval, and security practices.

I am looking for an experienced Android developer to help with a couple of key issues in my app. The primary focus should be on UI improvements. Key Tasks: token refresh functionality ignore battery optimize permission run at startups functionality UI change 2 new api's refactor code for easier maintenance currently displayes persistent notification dont want it Other requirements: - The app's token refresh mechanism must be revised and optimized - You should be able to ignore battery optimization permission I would ideally like a freelancer who is experienced with Java, Android Studio and UI/UX principles. Experience with token refresh mechanisms and battery optimization is also highly desirable. Please provide examples of previous relevant work.

I'm urgently looking for a Laravel expert to assist with my project. We're needing support specifically in the backend development, particularly revolving around: - Data Processing: You'll need to have proven skills and experience in handling data storage, retrieval, and manipulation within the Laravel framework. - API Integration: Expertise in integrating third-party APIs into Laravel projects is critical. The job needs to be expedited and I appreciate promptness and dedication to fulfilling the project within a short period. Proven prior experience in similar projects will be a definitive plus. Please include "Laravel Backend Expert" at the start of your proposal to confirm you've read and understood the full requirements.

I'm looking for an experienced Android app developer with strong front-end and back-end skills to develop an app based on my requirements. Specifically, the app should support in-app purchases and be compatible with all current Android versions. Key Requirements: - Develop front-end and back-end of the app - Implement in-app purchasing functionality - Ensure the app supports all current Android versions Data Management: - I prefer direct database access for content management - Utilizing third-party services for a more seamless and efficient data processing Ideal Skills: - Proven experience in Android app development - Proficiency in implementing in-app purchases - Strong understanding of both front-end and back-end development - Familiarity with managing data via direct dat...

I'm seeking a proficient C++ developer with ample experience to handle an update to our existing source code. You will be tasked with: Upgrading the source code to make use of the RandomX algorithm (no need to implement the algorithm, as we already have it ready and we will provide the source code), currently the source code is fully working with CryptoNight. Knowledge and experience with the CryptoNight or crypto coins are incredibly beneficial. You should be well-versed in updating and refining source codes.

I require a skilled Java programmer to assist me with debugging a beginner-level program. Key aspects of the project: - Debugging: The main focus of this project is to help me fix basic syntax errors and runtime errors that I am encountering in my Java program. - Goal: The primary goal of this collaboration is to ensure that all identified bugs are fixed in the program. Ideal Freelancer: - Proficient in Java: The ideal candidate should have a strong understanding of Java programming, particularly when it comes to debugging and handling errors. - Patient and Detail-Oriented: As this is a beginner-level task, I am looking for someone who is patient and detail-oriented, to help me navigate through the debugging process.

(ON SUNDAY EVERYTHING SHOULD BE DONE THAT IS THE CONDITION) I need a skilled frontend developer to create basic HTML/CSS pages. You will need to integrate these frontend pages with a Python backend. The project involves adding JavaScript for client-side validation and implementing AJAX page transitions. After pressing the 'save' button on one of the pages, the page should transition to the next. The data inputted should be sent to the Python backend for processing. Key Requirements: - Proficient in HTML, CSS, and JavaScript - Experience with client-side validation and AJAX - Prior work experience that showcases your frontend development skills - Proficiency in Python is a must for the backend implementation Please provide me with your relevant past w...

...seeks a skilled contractor to manage a network of 40 WordPress blogs. This is a highly sensitive project due to the volume and value of the websites. Candidates have to send in identification and sign NDA. Key Responsibilities: Systems Administration: CPanel management, database administration (PHP), FTP, firewalls. WordPress Maintenance: Plugin updates, theme management, basic frontend/backend operations. Security Focus: WordPress hardening, malware/infection remediation, firewall configuration, virus scanning, intrusion prevention. SEO: Basic on-site/off-site optimization, Google Search Console, Google Analytics, Google Webmaster Tools, Google ReCaptcha, cookie consent implementation. The Ideal Candidate: Demonstrated WordPress administration expertise ...

...in. But in the website, it shows that the user is still in unlogged in mode. It seems the login state is not properly for the website either in the cookie, or somewhere in the webpage Key Points: - Occurring for regular users on Google Chrome - Random failures without a pattern I'm looking for a skilled Laravel developer who can help me diagnose and resolve this issue. Ideal Skills and Experience: - Strong proficiency with Laravel PHP framework - In-depth understanding of backend/frontend synchronization - Previous experience with debugging login/authentication issues - Familiarity with handling cookies in a secure manner - Excellent problem-solving skills and attention to detail - Ability to effectively communicate technical information to non-technical personnel...

I'm currently looking for a React developer with knowledge in the use for FiveM, I'm just looking for a single developer, not companies or teams. I need the developer to do the frontend and call the events as the are called in the FiveM Game.

I'm in need of a skilled developer to create an intelligent transaction monitoring platform with big data capabilities, specifically focusing on real-time monitoring and fraud detection. Key Features: - The system should support real-time monitoring of transaction data. - It should have fraud detection capabilities. - Data visualization to aid in tracking and analysis. - Analytics for evaluating transaction patterns and identifying potential issues. - Smooth Data Pipeline with Realtime streaming for efficient data handling. - API integration with third parties to ensure seamless operation. Target Audience: This platform is primarily aimed at banking and financial institutions, as well as e-commerce companies. Preferred Technology Stack: - Java & Python for the c...

I have 1 issue with socket.io-client. I developed the react-native project and tested it on Mac OS. I generated APK, but function is not working although that function is working well in Mac OS. If you have any experience, please let me know. Thanks

I'm looking for a React and developer that integrate a Partical background to our website ASAP. We found this interesting sample: Although it looks like Vanilla implementation, we want it to be integrated into our react landing page. We are looking for someone to integrate the background exactly as it is just without a loading spinner at the top of our landing page instead of the big blue banner on our website:

I'm seeking a proficient WordPress developer for my upcoming project. Here's a brief of the project: - I need a WordPress website that's user-friendly and functional. - The website should be optimized for performance and SEO. - You're expected to deliver a clean, well-commented code. Ideal skills and experience for this project: - Previous experience in WordPress development. - Familiarity with e-commerce and blogging functionality. - Proficiency in custom design is a plus. - Knowledge of SEO optimization. - Strong attention to detail and ability to deliver on time.

I'm looking for a seasoned Java developer who has experience working with XAMP. Your understanding of database systems is also crucial to this project's success. Please apply if you have the required expertise. No teams or companies please.

I'm in need of a skilled Power Apps developer to create a custom business application with the following features: - Image Capture and Upload: The primary function of the app is to allow users to take pictures using their device's camera. - Integration with OneDrive: The images taken should be uploaded directly to a specific folder in OneDrive. - 4 Different Upload Buttons: I'd like the app to have 4 distinct buttons, each triggering the camera function on the end user's phone for specific image captures. here's a complete step-by-step guide with all the necessary Power Fx code for implementing a camera feature where the camera is triggered by an "Upload" button for each document section. Step 1: Initialize the App Start by creating a new Canvas...

I'm seeking a specialised CodeIgnitor and phpMyAdmin expert to enhance my betting website's backend. As part of a 5-hour daily commitment, the role involves: - Integrating a UPI payment gateway in the admin panel. I've chosen Google Pay as the preferred UPI platform. - Setting up data analytics and reporting, crucial for measuring and optimizing our betting system's performance. Prior experience with betting sites, UPI integrations and systems reporting is desirable. If you're a driven problem solver who enjoys developing sophisticated functionalities, I'd love to hear from you.

I'm urgently seeking a skilled graphic designer to help expand my skill set. The project involves learning the basics of graphic design and I'm particularly interested in incorporating Java into my work. Key Requirements: - Proficiency in graphic design - Solid understanding of Java - Ability to provide clear, concise explanations for learning purposes The ideal freelancer for this project should have experience in both graphic design and Java. A background in teaching or tutoring could also be beneficial. I need someone who can effectively communicate complex technical information in a way that is easy to understand and apply. Please only apply if you can start immediately, as I'm looking to complete this project as soon as possible. I'm open t...

I'm in need of a skilled Machine Learning Engineer who can develop modules to help analyze the real-time electricity consumption for a variety of devices in our system. Backend: Key Points: - Devices to be analyzed include air conditioners, lights, and simple motors and other simple devices. - The analysis should cover both the collective consumption of groups of devices and the individual consumption patterns of each device. Ideal Experience: - Strong background in Machine Learning, ideally with experience in real-time data analysis. - Previous work in energy consumption analysis or similar fields would be a huge plus. - Proven track record in developing ML models for group and individual level analysis. The ML analysis we are looking for includes: - Identifying energy ...

MUST USE ANGULAR, CSS, and any other framework. Must develop using git (I have git account and digital ocean account) and deploy using continuous development to web server. and use mysql for the db backend Once the project is awarded we can work these out before starting development The project should be a simple tasks application. Users should be able to create a task, modify task, delete task, mark task as complete. The user can create as many task as needed. Tasks should have the following: Task Name, Task Detail, Priority (High, Low) , StartDate, EndDate

I screwed up on the backend of my website. The site is I must have clicked something that removed all the links to the socials on the sign up page. I need for someone to do the following: 1. Put the logos back up (it should just be a click of a button. I just don't know which one) 2. I'd like to add two more social link to the list. (patreon & buy me a coffee) 3. I'd like for each person who signs up to get an email thanking them for joining. 4. I'd like to make it so people can't sign up multiple times with the same email address. 5. On wordpress there are numbers for each person who signs up. If I delete a person the numbers don't change order. It would be nice if they did. This isn't a major thing if hard to do though. I don't...

I need a talented VB.net developer with a strong background in SQL Server. Key Responsibilities: - Develop software applications using VB.net - Efficiently manage databases - Designing, coding, testing, and debugging software applications using VB.NET. - Calling third-party API - Payment gateway integration - Stored Procedure Ideal Candidate: - Proven experience in VB.net development - Strong familiarity with SQL Server - Good problem-solving skills - Ability to work independently and meet deadlines. Please provide relevant work samples in VB.net development and describe your experience with SQL Server.

Our team is seeking a talented WordPress developer with specialization in theme customization, plugin development, and website maintenance to join us in bringing exciting websites to life. You will be involved in: - Collaborating on versatile and innovative projects - Utilizing your expertise to enhance our digital presence Ideal Skills: - Deep understanding of WordPress - Proficiency in Theme Customization - Experience in Plugin Development - Knowledge in Website Maintenance In your application, please include your past work. Examples demonstrating your proficiency in WordPress, theme customization, plugin development, and website maintenance are especially welcomed. We look forward to reviewing your contribution to this creative journey.

I need a professional freelancer to design an HTML form for my website. This form must have: - Text fields for basic information collection - Dropdown menus for selection options - Capture creation The form should be designed with user-friendly, vi...requirements for all input fields. This will ensure that the user completes all the required fields in the correct format. - Integrating an email script that will automatically send a reply to the submitter. This is an essential feature for my project. Ideal Skills and Experience: - Proficiency in HTML and CSS for form design - Experience in creating and implementing form validation - Knowledge of backend scripting languages for email automation - Understanding of user experience best practices - Experience with automatic email rep...

I need a React developer for immediate collaboration. The primary focus will be on frontend development, with special emphasis on creating a basic user interface, involving simple forms and buttons. Skills Required: - Proven experience in React, with a strong portfolio of work in frontend development. - Ability to work quickly and efficiently, meeting an immediate project deadline. - Familiarity with integrating APIs into a project. The ideal candidate will have: - Strong communication skills as this is an immediate requirement. - Prior experience working on simple UI/UX design. - A keen eye for detail and the ability to follow design specifications accurately. Please include examples of your work with your proposal.

I am seeking a skilled developer to create a comprehensive beauty appointment booking application that will run on both Android, iOS, and the web. As the app will be for beauty appointments, it will require a specific set of features to cater to the needs of both the service providers and the clients. Key Features: - User Registration: Allow both service providers (beauty professionals) and customers to create accounts. - Search Functionality: Clients should be able to search for beauty professionals based on their services and availability. - Booking and Payment: Seamless booking and secure payment processing. - Calendar View for Schedule: A clear and organized view of the availability of service providers. - SMS Reminder: Automated reminders to reduce no-shows. - Partial Section ...

...sources and present the results using insightful visualization techniques. Here are the requirements: - Implement Amazon Cognito for user authentication and authorization - Utilize AWS Amplify for the app's development and deployment - Integrate AWS API Gateway for efficient data exchange - Integrate Stripe for payments. Need complete flow Our tech stack looks like: - Amazon Amplify for app backend, and front end - Gatsby JS coupled with AppSync for front end - Amplify UI and MUI Material for UI components Features that I need: - End to end user journey - from login/registration to offering profile capture, to custom subscriptions - User DMs, Push Messaging, Custom email notifications (using SES) - Analytics (details noted below) Data Analysis Requirements: - Predictiv...

I'm in need of a proficient developer to build me a simple QuickBooks online application. This application should be geared towards triggering real-time dispatch of event data on items/products inventory to a webhook like Zapier. Below are the specific requirements: - Dispatching of Item Names, Quantities, and Prices: The application should be able to send all item/product data particularly item names, quantities, and prices from QuickBooks to Zapier. - Real-Time Data Dispatch: The application should be able to dispatch this data in real-time to ensure high responsiveness and accuracy of data. Ideal skills and experience: - Demonstrable experience in creating QuickBooks integrations - Familiarity with Zapier webhooks - Knowledge of inventory data management - Strong coding s...

I am looking for a skilled developer to create a comprehensive e-commerce website for my physical products using the Ionic and Vue.js framework. Key Requirements: - Development of an e-commerce website that allows for easy product display and categorization, as well as effortless navigation for users. - Backend API's will be provided by us ] Ideal Skills and Experience: - Proficiency in Vue.js and Ionic framework. - Experience in developing e-commerce websites - Should have good knowledge in UI/UX For more details Refer Doc

I'm in need of a skilled Swift developer with experience in implementing in-app purchases in macOS applications. The application is already built and functioning, but I require assistance in adding a subscription-based in-app purchase feature. Key Requirements: - Have access to the Apple Developer Program and experience in submitting in-app purchase features to the Apple Store - Proficient in Swift, as the application is built using this language - Ability to implement subscription-based in-app purchases seamlessly - Experience in the development of macOS applications and complying with Apple Store guidelines Your responsibilities will include: - Implementing the subscription-based in-app purchase into the existing macOS application - Ensuring the in-app purchase featu...

I need a skilled PHP developer for a project that requires merging multiple images into a single template. The primary task is to overlay images on top of a template, creating a final image that is a combination of all the images. Key requirements include: - Merging multiple images: This project involves overlaying several images on top of each other to create a final composite image. - Positioning and Size: The ability to adjust the positioning and size of the images being overlaid is essential. While I prefer a simple drag and drop tool to adjust these parameters, the output should be precise. - Output Formats: The final image should be available in both JPEG and PNG formats. Ideal skills and experience for this job include: - Strong proficiency in PHP: Since this project will b...

...they aren't necessarily urgent and should be achievable without disrupting the overall flow of the app. - The interactions with the menu are also up for reconsideration. We're open to a different approach than the traditional menu. Maybe something more interactive like a roller, or a more user-friendly system than a standard dropdown. Right now we have 26 cities that have to be included The backend CMS work both for android and iOS Ideal skills for this project include: - App design experience, particularly with menu systems - A good understanding of user interaction and interface design - The ability to balance creativity with practicality We're looking for a freelancer who can bring fresh ideas to the table while also respecting the existing structure of t...

I'm looking for a seasoned full stack developer with expertise in Flutter, React JS, and Node JS to build a comprehensive web application. The project will include, but not limited to: - Building a User authentication system - Implementing real-time notifications - Integrating data visualization tool The ideal candidate will have a proven track record of developing complex web applications. Familiarity with Firebase and Google Cloud is also a plus. Through this project, we aim to create a responsive, efficient and user-friendly platform. Your role will be crucial in achieving this goal. Please provide examples of web applications you have built previously that applied these skills, especially with real-time notifications and data visualization. I look forward to working with ...

I am looking for an experienced Android developer to help with a couple of key issues in my app. The primary focus should be on UI improvements. Key Tasks: token refresh functionality ignore battery optimize permission run at startups functionality UI change 2 new api's refactor code for easier maintenance currently displayes persistent notification dont want it Other requirements: - The app's token refresh mechanism must be revised and optimized - You should be able to ignore battery optimization permission I would ideally like a freelancer who is experienced with Java, Android Studio and UI/UX principles. Experience with token refresh mechanisms and battery optimization is also highly desirable. Please provide examples of previous relevant work.

I'm looking for a skilled blockchain developer with hands-on experience in Smart Contracts and DApps. The ideal candidate should also have proficiency in Frontend technologies like React. Key requirements include: - Developing Smart Contracts - Building DApps I'm open to suggestions for specific functionalities or features to be included in the Smart Contracts or DApps. Please respond with your relevant experience and a proposed roadmap for the project.

I need immediate help in implementing an OTP-based user authentication system. The project consists of - - OTP-based user authentication: The user should receive a unique OTP via SMS that they would enter to be authenticated. - React Native integration: The user interface needs to be seamlessly integrated and tested. - Node.js and MySQL: The backend should be designed to handle the OTP generation, validation and user details. I have a tight deadline and need this project completed as soon as possible. Ideal candidates should have: - Strong experience with React Native, Node.js and MySQL - Previous experience implementing OTP-based authentication - Able to work quickly and efficiently Please only apply if you're confident in delivering on time.

I'm seeking an adept software developer to create a complexity logistics software. It will cater to various roles within our organization: from Admin users, Warehouse managers to tecnical team, and servicces. MAIN FEATURES: - Service Requirement Management: The software should effectively capture and communicate service requirements. - Feasibility Evaluation: As a key feature, the software should have the capability to assess the feasibility of each service requirement. - Task Assignment: I would like the software to automatically assign tasks based on the service requirement. - Material Assignment: It should also manage the assignment of materials to each task. - Inventory Management: Lastly, the software should keep track of our inventory with the utmost precision for ef...

I'm on the lookout for skilled blockchain backend developers with proficiency in Python, JavaScript, and Solidity. Your understanding of Ethereum and experience in blockchain will prove to be incredibly valuable. The key features I need you to support in the blockchain backend are smart contracts and the development of decentralized applications (DApps). Ideal Skills and Experience: - Proficient in Python, JavaScript, and Solidity - Experience with Ethereum - Prior work in blockchain development - Knowledge of smart contracts - Proven experience in DApp development Your ability to deliver efficient and secure blockchain backend solutions, that facilitate the execution of smart contracts and the development of DApps, will be crucial for the success of this proj...

I'm seeking an experienced .NET programmer to add a new feature to my existing application. Specifically, I need a modification to bypass member search by using a querystring. The page concerned is this:- We wish to have a direct url that replaces the process of searching for a member (eg member no 161068) and arrives at page two directly. For example, entering 161068 in the search box and selecting Checkedandvetted then pressing 'review this company' moves the user to page 2- review your experience. This is what we want to achieve with a single url. This is so that we can provide a url like that will do the same as the previous steps. Ideal skills for this job will include: - Strong knowledge of .NET programming - Experience in modifying applications - Techni...

I'm in need of a proficient developer with very specific skills for an exciting project. This project involves creating a poster maker for mobile platforms and should contain features like customizable templates and image importing. Key features and requirements of this project include: - Mobile platform compatibility: The poster maker should be intended for use on mobile platforms. - Feature implementation: It should possess two main features, 1. Ability to utilize customizable templates, and 2. Capability to import images. - Supported image formats: Importing of JPEG and PNG formats should be seamlessly facilitated. Ideal Skills: Expertise in mobile app development is required, with a profound understanding of integrating the required features aforementioned. Prior experie...

...Laravel developer who can integrate Dialogflow with my Laravel 7 application. Key Requirements: - The primary goal of the integration is to automate responses for user inquiries. Hence, you should be well-versed in both Laravel and Dialogflow to achieve this automation efficiently. - You'll need to set up a Dialogflow account and project from scratch as I haven't done this yet. Your experience in Dialogflow will be instrumental in ensuring that the setup is seamless and optimized for my application's needs. Ideal Skills: - Proficiency in Laravel 7 or 8 - Extensive experience in Dialogflow, including setting up accounts and projects - Strong understanding of automation and how DialogFlow can be leveraged to optimize user inquiries I'm looking for a proacti...

I urgently require a Framer developer to improve the user experience of our existing designs through the implementation of new interfaces, bug fixes, and the addition of animation effects. The project involves the creation of interactive prototypes to test user experience and responsive design. As the project is time-sensitive, it is crucial that the selected developer can commit to working on this project immediately. Ideal Skills and Experience: - Proficiency in Framer and its features - Strong understanding of user experience and design principles - Experience in creating interactive and responsive prototypes - Ability to fix bugs efficiently and effectively - Strong communication and time management skills

I'm in need of a Junior Full Stack Engineer who is proficient with Java, with beginner level experience. The primary task will be to work on implementing Go Live for an assigned project. Ideal skills for the job: - Understanding of Java programming language - Ability to work collaboratively on a team - JSON - XML - SQL - Data Mapping Some experience with project implementation is a plus. Dedicated beginners are also welcome to take their first steps in a real project.

Hello, I have a dating app that was developed 4 years ago and is published on Google Play. It was made in JAVA, but now the version is depreciated on the market. What I want for this app is to rewrite the code using Kotlin or Flutter, because this app was made in Java 4 years ago. Within the app it has many functions. Apply for this project and tell me the price at which you would do it. and The estimated time. - Implement in the app (Membership - payment plan with Google)

I am in need of a proficient developer who can assist me to complete my project on React Js which is a crypto chess game. The ideal candidate should have the following skills and experience: * Frontend development - The design and theme of the game should be in classic style. It's paramount to have a good understanding of user interface and experience. Knowledge of React Js is mandatory. * Backend development - This involves creating a secure and efficient server-side system. Proficiency in Node Js or any suitable scripting language is crucial. * Database integration - You will be tasked with integrating MongoDB into the project. Knowledge and experience in MongoDB use is required. Specific features to be added include: * Real-time multiplayer - This includes facilita...

...experienced web developer to help me create a user area website. The functionalities of this platform should include: - Account Registration: The website must have an account registration feature that requires users to provide their email address, username and password to create their accounts. User data, - Users must verify themselves with documents (kyc) I don't want to use an external system like sumup, only internally, it's easy to verify documents, photo front back and selfie - the admin can create orders and generally activate them for all users or only for individual users - the user can accept orders and then has to rate them - excites have a value that should be displayed in the backend - If users have successfully completed orders, they will receive th...

Our goal is to develop a Reactive Web App that would help match care-providers with care-seekers (similar to what SitterCity does). We have requirements specs that we can provide to help get started on the project. The App must have web and mobile user authentication, as well as e-commerce integration and social media integration. For the e-commerce aspect, we would need features like checkout, payment processing, billing, etc. The social media integration should include features like logging in using social accounts, etc. We’re looking for in-depth knowledge of Web App development process, someone who can develop efficiently and according to our design specifications. Experience with creating an App with similar functionalities is a major plus. Building must be done with latest tech...

I urgently need a C++ developer to assist in expanding my project. Your task will be to implement a unique feature which requires capturing low-level screenshots directly from the GPU. The key responsibilities include: - Developing a new, specialized feature that captures and handles GPU screenshots. - Ensuring the smooth and efficient performance of this new feature. It's beneficial if you have prior experience with similar GPU-related tasks and a solid understanding of C++ programming, API integrations, and screenshot capture techniques. Please bid now if you believe you have the skills and can deliver swiftly.