Part time java programmer sydney jobs

I am in need of an experienced developer to create a project management web application that's colorful and vibrant. My vision is to have: - Task allocation and tracking: An integrated functionality that gives us the ability to multi-task and keep track of on-going projects. - Time tracking: Time management is crucial for us, we need a system that keeps things timely and organized. Ideal candidates should have experience in developing project management software or any relevant web applications. Familiarity with a vibrant and colourful user interface is also a key requirement. Show me your relevant portfolio so we can collaborate effectively to bring this vision to life.

...will be crucial to help me interpret and visualize data effectively. - Developing software or web applications. I am working with Java/Spring/JavaFX and am open to creative development ideas and solutions. - Designing logos and visuals. Your ability to create engaging and unique visuals will be a big asset to my projects. I am currently using Word 2010 and will be working with Java/Spring/JavaFX for the programming aspect of this project. The ideal candidate should possess the following: - Proficiency in Word 2010 and earlier. - Strong skills in Excel for data analysis and spreadsheet creation. - Experience in software and web application development with Java/Spring/JavaFX. - A creative flair with a keen eye for graphic design, particularly in logo design. If y...

This is an assignment with 5 stages that 2/5 are done and Half of the remaining stages are done as well I want someone to help me finish it and the projects has a guidline and some libraries limitations plus an inbuilt automarker

I'm looking for a skilled developer to assist with syncing an Excel file to my phpMyAdmin database. Key Requirements: - Real-Time Syncing: The sync should take place continuously in real-time. Any updates made to the Excel file should be reflected in my phpMyAdmin database instantly. Skills and Experience: - Proficient in Excel and phpMyAdmin - Experience in data syncing and database management - Familiarity with real-time data syncing No specific data validation or transformation is needed during the import process. The goal is to ensure that any changes made in the Excel file are accurately reflected in the existing database.

...Minimum Viable Product (MVP) of an Android application for inventory management and tracking using GPS and Bluetooth beacons. Technology: Flutter Key Requirements The Application -------------------------- - The app should primarily be developed in Flutter. However, since a Foreground service is required to run indefinitely in the background, it is acceptable to create this service in Kotlin or Java. Communication between Flutter and the native code should be done via Platform Channels (MethodChannel and EventChannel). User Interface ----------------------- The app should have three main screens: - Splash Screen: Displays the app logo. - Login Screen: User authentication with username and password. When the login button is pressed, a POST request should be made to an API (...

...Writing Assistance: Access personalized support in crafting articles, essays, and assignments tailored to your academic needs The main color of the website and logo is #0caa00. Designs should be cohesive with this color scheme. The website will have a high-level, elegant design. The graphics should be the same. Please provide an example of how you would design one of the service graphics as part of your application....

hello I am currently planning to start a startup. I am currently entering the IT field (fields such as Facebook and Instagram) and need a programmer to join me. The working hours per day will be more than 40 hours, and a small salary may be paid per month. I have very creative ideas and am ready to grow into a global company. If you join me, I will provide you with an additional salary increase and a higher position as the company grows (e.g. Data Manager/Marketing Manager, etc.) Anyone who can do any of the following is welcome. -programmer -translator -lawyer -Server maintenance -Marketing expert -Anyone else who can contribute to the growth of the company Anyone who has a lot of passion and is starting a journey with me for my company is always welcome!

I'm looking for an experienced Java developer to help me with my test cases. The primary focus of these tests is Integration testing for multiple components. Ideal skills and experiences: - Java programming - Expertise in Mockito/Power Mockito - Experience in integration testing - Ability to work with existing test cases and refactor them.

I’m looking for an experienced system programmer who can create a batch file or script that performs a specific set of tasks on a local W10/11computer. The tasks I need accomplished are: - Connect to the remote QNX computer via SSH (Secure Shell)( login/ password in config file.) -send some command (must be configurable - Run certain commands via batch file on windows 10/11 computer. (Configurable) - Run local bat comands on Windows computer (configurable) - Send key combinations on Windows computer (configurable) Managing errors if they occurs. Keep CMD open for manually entering other commands ( in feature can be automated as another project or add-on) Prior experience with batch file creation and QNX systems is necessary. Proficiency in SSH connections is also essential ...

...items under different categories. - Content editing is essential. I need to be able to update the content of the site regularly. - The CMS should also include user account management. This will allow registered customers to have accounts on the site with their own profiles, order history, etc. - Additionally, I need the ability to send promotion messages to registered customers. This will be a key part of our marketing strategy. Payment Gateway: - The site should integrate Square as the payment gateway. Ideal Skills and Experience: - Experience in developing custom e-commerce websites. - Proficiency in CMS development. - Strong understanding of database management. - Prior experience with Square payment gateway integration. - Aesthetically pleasing web design portfolio. - Exce...

I am seeking a talented machine learning engineer or data scientist to create an automaton for recognising handwritten digits specifically within mathematical problems. Responsibilities: - Develop a machine learning algorithm capable of recognising handwritten digits - The primary focus will be on m...is to develop a practical, efficient, and accurate automaton that simplifies the process of converting handwritten mathematical problems into digital numbers. I am looking for someone who can attentively listen to my specifications and implement them accurately. I value open communication and regular updates. you need to develop the first part (phase initiale) and the project number 18 - but the problem is to find a way to make a link between first part and (phase applicatif ...

I'm seeking a Django/ Java Script with Bootstrap expert who can assist with the layout and design of my website atplands.com. The primary goal of this project is to update the site's visual appearance. My website: Reference downloadable Theme code: Key tasks include: - Reviewing the current website and providing recommendations for improvements - Collaborating with the team to create a new, fresh look for the site - Ensuring the new design is functional and user-friendly Ideal skills for this project include: - Strong experience with Django/ Java Script with Bootstrap - Proven track record of working on front-end development using JavaScript/Bootstrap - A good eye for design and layout - Ability to understand and implement JavaScript

As part of my project, I'm searching for an exceptionally creative and experienced designer who can design a more interactive element for multiple choice questions or quizzes. The overall objective is to increase user engagement in a fun and education-forward way. Key Responsibilities: • Create a design with interactive elements including both animations and sound effects. • Design needs to be appropriate and appealing towards a broad age group, ranging from children to adults. Ideal Candidate Skills: • Proficient with user interface and user experience design. • Knowledge of how to blend animations and sound effects into the design while keeping it user-friendly. • Previous experience designing interactive quizzes or educational tools will be a big...

I'm in need of a skilled full-stack developer to create a website that is primarily aimed at monitoring the activities of employees within company. It is my university project that's why It doesn't need to be perfect like for a real company. And deadline is 21.05.2024 The website needs to have the following features: - the most important part is frontend and design - Company name EasyLang and website should contain company name -Time tracking: The ability to record employees' working hours accurately. - Employee attendance tracking: A system to automatically monitor the attendance of employees. - Task assignment and progress tracking: A tool to assign tasks to employees and monitor the progress of these tasks. - The WEBSITE should CONTAIN the USER STORIES...

"I am looking for a programmer to create software solutions for a website by improving the website's performance through developing techniques to access the website's server via creating code or bot."

I'm looking for a skilled content writer to create 500-1000 word articles for my website on technology, finance, and health. The successful candidate must have a strong understanding of SEO principles and be able to implement them effectively. The budget of the project is 0...informative content on the mentioned topics - Should be plagirism--free (we will check in copyscape) and AI-free (we will check in copyleaks) - Experience in SEO writing for online content - Excellent research skills to produce high-quality, accurate, and up-to-date material - Consistency in delivering projects in a timely manner I am looking to pay on a per-project basis, making this an ideal part-time position for those with the right skills and experience. Please provide a sample of your previo...

we are looking for react developer with experience in APIs to check api document and implement validations and fix the API posting . 90% of the code is already implemented , only validations and posting part needs to be fixed . this willl lead to more projects in future Key Requirements: - Proficiency in React development - Experience with API integration in React - Ability to determine and implement the most suitable React APIs for the project's needs

PACMAN GAME JAVA WITH PROCESSING 4.3 IDE

I'm in need of a skilled web developer to create a website that is primarily aimed at monitoring the activities of employees within company. It is my university project that's why It doesn't need to be perfect like for a real company. And deadline is 21.05.2024 The website needs to have the following features: - the most important part is frontend and design - Company name EasyLang and website should contain company name -Time tracking: The ability to record employees' working hours accurately. - Employee attendance tracking: A system to automatically monitor the attendance of employees. - Task assignment and progress tracking: A tool to assign tasks to employees and monitor the progress of these tasks. - The WEBSITE should CONTAIN the USER STORIES PROV...

I'm seeking a professional who can help me increase the watch time on my YouTube channel. While I primarily post entertainment videos, I'm looking for strategies to boost this metric to meet the 3800 watch hour threshold. Key Requirements: - Proven experience in growing watch time on YouTube channels - Strong understanding of YouTube's algorithm - Familiarity with content creation and optimization for entertainment content I'm open to discussing different strategies for achieving this goal. If you're creative and resourceful with a track record of success in this area, I'd love to hear from you. Feel free to share your ideas and past accomplishments in your bid.

As the client, I'm looking for an experienced Java programmer to build a stripped-down visual representation of Pacman game mechanics for a basic coding project. Only in Programming 4.3 IDE. Key Functionalities: - Pacman Movement: Program the user's ability to control and move Pacman around the maze. - Pellet Consumption: Pacman should be able to eat pellets within the game. - Ghost Behaviors: Ensure ghost characters are present and exhibit the expected behaviors. Design and Visuals: Design need not be complicated. I require a simple, minimalistic design that effectively communicates game mechanics without overwhelming visuals. Ideal Skills and Experience: - Solid experience in Java programming - Previous experience creating game prototypes would be ...

I am looking for an experienced Photoshop guru to make some specific changes to one of m...completely removed. - Transparent background: Once the existing background has been eliminated, I want it replaced with transparency, making the main subject pop. - Enhancements/Adjustments: I want the main subject's contrast adjusted for a clearer, crisper image. Additionally, I need sharpening enhancement to bring out the details. - i also need a portion of the dog in the photo filled out as part of her is covered Ideal candidates for this project would have extensive Photoshop experience with excellent skills in background removal and photo enhancement. Your attention to detail and understanding of photo editing will be critical to the success of this project. I look forward to se...

I'm in search of a skilled Java developer who can assist with a web application project. The ideal candidate should be well-versed in software development, bug fixing, and code optimization. Key Tasks: - Software Development: You'll be responsible for creating a new web application from scratch, ensuring that it is efficient, user-friendly, and meets our requirements. - Bug Fixing: Should there be any issues with the application, you will be expected to identify and fix them promptly to ensure the smooth running of the app. - Code Optimization: You will also need to continuously monitor and optimize the codebase to guarantee the application's performance and stability. Skill Set: - Proficient in Java. - Solid experience with the Spring Framework, Hibernate, a...

I'm looking for a skilled programmer who can develop a custom solution for me using frida-tools. The goal is to manipulate webcam settings within an Android emulator environment via adb. Here's what I need: - Modify the current webcam resolution to be higher. - Improve the webcam image quality to support High Dynamic Range (HDR). - Ensure frida-tools can adjust parameters to emulate native library detection. What I require from you: - Experience with frida-tools and adb commands. - Understanding of Android emulator environments. - Proficiency in webcam technology, including resolution and HDR. - Capability to simulate native Android library detections. Freelancers with prior projects involving webcam customization or Android emulation will be preferred. If you have

Name of the company: The Australian Indian Ensemble Elements to be used: Goddess Saraswati, Veena, musical instruments and Sydney Opera House. Colours: Blue, white, green etc Font: Can be slightly fancy and creative but still easy to read and look at Theme/style: can be bold, creative but still modern and sophisticated. Design concepts are ready and can be shared upon project finalisation.

I am in need of an experienced Algo / Python developer with a strong background & deep understanding of algorithm construction. As part of this project, you’ll be responsible for: Algo for Range breakout :-- - Developing algo in python for Range Breakout strategy - Test it & implement for the demat account in brokers- Upstock, Alice Blue, Dhan & 5paisa Ideal skills for this role include: - Extensive experience with Python specifically in the areas of automation and algorithm development - Familiarity with stock market - Strong ability to run effective algorithms Your role in this task is more tilted towards the developmental side, with the creation of an algorithm being the primary focus. You are expected to apply your Python skills to create a seamless, effic...

I'm looking for a skilled React developer to join my project team. We are working to develop a single page application and your role will be crucial in achieving this goal. Key Tasks: - Creating new components: You will be responsible for building new components that align with our project requirements and design. - Debugging and fixing existing code: Part of your tasks will involve troubleshooting and resolving any issues that arise within the existing codebase. - Performance optimization: It's essential that you have a strong understanding of React and can help optimize the performance of our application. The scope of this project is the development of a single page application, and a key focus will be on ensuring a responsive design. This is crucial to enhance user ex...

I'm seeking an intermediate-level programmer with experience in Embedded C and 8051 Microcontroller. The project involves designing a system that takes input from 3 sensors and controls an actuator (motor). Key Requirements: - Design a system on 8051 Microcontroller - Program the system in Embedded C - 3 sensor inputs and motor output - Intermediate experience level - Assist in sourcing necessary components I have a strong preference for someone who has worked with 8051 Microcontroller and has experience with designing systems that integrates sensor inputs and actuator outputs. Your role will involve both programming and assisting in recommending and sourcing the necessary sensors and actuator for this project. If you're experienced in these fields and can commit to a...

As part of my thesis, I'm in need of a 3D model and rendering for a co-working space. The project focuses on the entire building comprising 5 floors, but interior designs are only required for a few views. Key Requirements: - I'm looking for a modern style for the co-working space. - I require basic level of detailing for the 3D models and renderings, with simple textures and minimal details. The main areas to focus on for the interior views are the various workspaces within the co-working space. Ideal Skills and Experience: - Proficiency in 3D modelling software, specifically for architectural projects - Prior experience in creating basic level 3D models and renderings. The project is specifically aimed for my thesis, so I'm looking for someone who is not on...

I'm in need of an ex...relevant experience in product promotion. The new version of the app has the following features which I think will be interesting for new users: - How much car/house can the user afford? - How much does the user saves if he pays his debt earlier using extra payments - How much time until FIRE. The app is available on iOs, MacOs and Android and I have the links for all of the platforms and I would like the landing page to have the standard AppStore/PlayStore download links/buttons. I am opened to suggestions for the hosting part, maybe Wix can be a good candidate, not sure. The only requirement will be to be able to connect a domain because I have my own domain. UPDATE: Redesign this page please ->

...explanations. - The guide should include troubleshooting tips to address possible installation issues that users might encounter. *All pre-requisites setups need to be included too - NDK, Cmake etc* Assume non-IT person or 10year old is following your instructions The test device will be a Samsung Note 21 NOT using Anaconda/Conda - just basic PATH settings etc on Windows. NOT using Koltin - using Java ** I suggest you have have installed MLC Chat and created the APK file to understand the challenges the guide you are writing needs to address ** Ideal Skills: - Proficiency in Android Studio and experience with software installation and deployment. - Excellent technical writing skills with the ability to convey complex information in a clear and concise manner. - Previous exper...

I'm looking for a seasoned developer to create a desktop application focused on data management. This software will be used on the Windows operating system and must be developed using Java. The ideal candidate will have: - Extensive experience with Java and Windows development - A deep understanding of data management systems - The ability to work effectively and communicate progress regularly Please provide a clear demonstration of your skills in these areas when submitting a proposal, we are looking for the best development talents to execute this project.

...21&t=9KoCtDCbyM0gkNBm-1&scaling=scale-down-width&starting-point-node-id=9933%3A524 The key features I require include: - Fast loading - Google page speed check has to be 100% for both desktop and mobile - The page is image heavy, hence has to lazy load images correctly - Menu has drop down images heavy. Accordingly loading should be only on mouse over and not interfere with rest of page load. - First part of the page should load very fast. - Listing of rest of the page should re-fresh on scroll. - Listings are fetched from Mongo db on aws server. - User-friendly dropdown menu design - Solid understanding of interactive elements The ideal candidate should have a strong portfolio involving React and NextJs development and responsive web design. Familiarity with creati...

As a burgeoning Amazon seller, I'm seeking a virtual assistant with specific skills and experience, primarily around product listing. Key Responsibilities: - Listing Optimization: Your primary role will be to optimize listings, ensuring they are well-crafted and keyword-rich to enhance visibility and sales. - Product Research: Assistance in product research to identify trending products, their competition, and potential for success is a plus. - Inventory Management: Basic inventory management skills are a bonus, but not mandatory at this stage. Ideal Experience: - Amazon Listing Experience: The ideal candidate will have a proven track record of successful Amazon product listings. - E-commerce Knowledge: Familiarity with e-commerce platforms and trends is highly valued. - SEO and Cop...

I'm in need of a skilled electronic circuit and hardware engineer to help me with the design and selection of components for a project. The project involves the creation of a power supply, an analog digital convert...this job should have a solid background in electronic engineering, particularly in circuit design and component selection. Experience with power supplies, analog digital converters, and relays will be highly preferred. This is an exciting opportunity for a talented engineer to contribute to an innovative project. I have an electronic pcb circuit, it is receiving emc noise. I tried to solve that part by making a 4-layer pcb, but it is still receiving noise. There is an ADC converter in the circuit, sometimes I also experience the problem of spontaneous shutdown. ...

...“By: Ebony Jenae” should be at the bottom in the center. Feel free to add shapes like squares or circles in the background to fill in any emptiness. Here are the character descriptions for the 4 girl characters: Character A: Age 7, Two afro puff ponytails, caramel-skinned, on the right of the cover Character B: Age 10, Full curly afro with a side part. Dark-skinned, in the center of the cover Character C: Age 7, Long braids with a side part, Light-skinned, on the left of the cover I've attached a photo of the characters created by a previous illustrator. However, I am not satisfied with them. The skin complexions are not correct, nor do I like the hairstyles, Please do your own version of these characters based on what I described, using the same illu...

I'm in need of a skilled web programmer proficient in HTML/CSS, JavaScript, and PHP to create a comprehensive work tracking portal. I have a very rough semi functional example site attached. This will be hosted on a private server with vpn access from each user so security is not a extreame concern. key functions basic login system allow users to enter daily work time with some notes ; I would like them to be able to edit them after allow users to see a list of all open jobs and be able to click on them to open them and edit as needed client management - need to be able to search existing clients or add new ones as well as view any jobs open or closed for the client. job photo uploads need to be optimized for mobile phones / tablets I would also like to ad...

I'm in need of a developer to set up user roles in my new spring application like they were in the old struts application. Key Project...roles in my new spring application like they were in the old struts application. Key Project Details: - Setting up roles: I require the creation of Admin, User, Manager, and Supervisor roles with the same permissions as in the old struts application. - No additional roles: The only additional role needed is 'Supervisor'. I do not require Developer or Guest roles. Ideal Freelancer: - Proficient in Java, particularly Spring Framework. - Proven experience in role-based access control. - Familiarity with legacy system migration. - Good understanding of the Struts framework (for comparison purposes). - Strong communication skills for c...

As part of my MBA project, I have prepared a Project with analysis on Pharmaceutical industry. It is 15000 words project. I'm looking for a skilled and experienced researcher proof read the content and rectify if any plagiarism is found. Key areas of focus: - Conduct a thorough investigation on the project. - change the content which has plagiarism. Usage of quillbot or chagpt is not recommended. - Prepare charts and pie. Maybe 3 or 4 small charts and diagrams are there. I'm seeking a professional with: - A strong background in Research and/or the pharmaceutical industry - Excellent report writing skills, capable of delivering a well-structured and insightful final document.

...options trading - Familiarity with PocketOption and OlympTrade platforms - Ability to deliver accurate and timely trading signals - Strong communication skills for direct message delivery This project is ideal for someone with a good understanding of binary trading and the ability to create a reliable and effective telegram bot. If you meet these criteria, I'm looking forward to your bids. The programmer will use his/her own winning strategy to create the signal generator. Functionality: 1. Robot is telegram base 2. generate signal for OTC and currently peers 3. Perfect prediction rate 4. Robot is telegram base 5. Robot does not automatically place trade 6. robot only generate signal when user request it Martingale Strategy: - We require basic customization of the mar...

...Integration -Integrate with OpenAI and other AI platforms to provide an assistant chat feature. -Allow the AI assistant to read and answer questions about the content on the current page in real-time. -Enable the AI assistant to suggest better content for specific sections of the page. -Provide a simple "replace" feature that allows users to easily use the suggested content to update sections on the crawled site. Technical Requirements 1. Backend -Build the system with a robust backend architecture that supports high scalability and performance. -Use a well-known programming language such as Python, Java, or Node.js for backend services. 2. Database -Use a scalable database solution, such as PostgreSQL or MongoDB, to store scraped data and user information. 3. ...

...significantly enhance the algorithm efficiency, thus resulting in a noticeable speed improvement. Ideal Skills and Experience: - Proficient in Python: You should have extensive experience working with Python and be able to recognize areas in the code that are causing performance bottlenecks. - Data Analysis Experience: Familiarity with data analysis practices would be beneficial as the code is part of this application. - Optimization: You should have a strong background in optimizing code for improved speed and efficiency. Additional Information: - The code is currently functional but is not running at the desired speed, impacting the efficiency of the data analysis process. - You should be able to work independently and effectively communicate any changes made for future ...

I'm looking for an experienced web developer to help me with some quick fixes on my website. Key Issues: - Slow Loading Time: My homepage and product pages are experiencing slow loading time. The website is currently loading in more than 10 seconds, and I need this to be improved to less than 10 seconds. - Formatting Issues: There are also some formatting issues on the website that need to be corrected. Ideal Skills and Experience: - Proficiency in web development and optimization - Experience in resolving slow loading time issues - Strong understanding of responsive web design and CSS for fixing formatting issues

I need assistance primarily with setting up and operating my recording gear, specifically microphones, audio interfaces, and studio monitors. Additional support is desired in the area of sound mixing and editing. My Native Instrument Midi Keyboard also forms a crucial part of my setup. The purpose of these recordings is primarily for music production. Skills and experience in recording equipment setup, troubleshooting, and studio work would be ideal. Proficiency in sound mixing, editing, and knowledge about a range of instruments is a must. The technician will need to come to my location to hook everything up.

I have a live Amazon seller account. As a part of managing my account, I am looking for a professional to handle 'A to Z' management services. The ideal candidate should: - Experience in sourcing, does not have to be in shoes as I already have someone for this task - Be experienced in managing Amazon accounts - Be proficient in A to Z account management, including product listing optimization, customer service management, and inventory management - Have a good understanding of Amazon's policies and guidelines - Be able to strategize and implement plans to increase product visibility, sales, and customer satisfaction Looking for someone who can take this responsibility off my hands and help me grow my Amazon business.

...functionality is working correctly, I will give you the login details, and you can then transfer it there and continue the work. and I will also award you the job at that time. 3) The product must be customizable with text and adornments that the customer chooses. The most important part is that the customization choices will show on the picture in real time. In other words, the picture will change each time a customization is added. I need ONE PAGE created for web store (wordpress/woocommerce). Must have a visual product customizer. Meaning that a customer will have the option to customize the item and see the changes they make in real time. Not just colors and sizes though, but entering texts and choosing adornments, etc. Here is an example of what ...

...using Blender for creating 3D models of natural landscapes. The focus will be on a waterfall so prior experience in modeling water bodies would be an added advantage. - Landscape Detailing: The model should include medium-detailed vegetation types, general shapes, and textures. The aim is to make the scene look as authentic as possible without compromising performance. - Water Simulation: As part of this project, you'll be required to simulate motion for the falling water. Experience with Blender's fluid simulation tools would be a big plus. - Attention to Detail: You must have an eye for detail and be able to create a visually appealing and realistic 3D landscape. If you have a portfolio of similar projects, please share them with your proposal. Looking forward t...

I am seeking an experienced music transcriber to provide me with sheet music in MusicXML for "Almost Blue" by Chet Baker - Live in Tokyo (see on YouTube). Exact transcription of the Piano part from original, including improvized solo, and exact base, is required. If this sounds like something you're capable of handling, please bid on a flat-fee complete project basis with turnaround time and relevant sample works.

I am seeking an experienced LT Spice expert to assist with the design and simulation ...AC and not DC - Conduct detailed simulations to analyze performance - Optimize circuit design based on simulation results The MOSFET part number is SIHP24N80AE-GE3, The PWM controller that will send the pulse to the gate driver is UCC28086D, and the isolated gate driver UCC21550BQDWRQ1. It would be good to use parameters from these components where applicable for a representative test. For example, changing the MOSFET to the one with low Rds On - Drain-Source Resistance will give square output at the section labeled square wave. I have also attached the type of transformer Skills: - LT Spice - Power electronics - Simulation - Troubleshooting Delivery time is within 20th May evening (I...

Here we need some of new futures and updates in our app need updates App is in flutter coding for more details can see the documentation all backend part completed need to develop only frontend part only my budget is 4k only interested people participate in bid