JavaScript Jobs

JavaScript is one of the most popular programming languages in the world. If you are looking for a website to be created with sophisticated interactivity or in search of an impressive mobile app, using JavaScript is the way to go. With the help of our expert Javascript Developers, you can bring your idea to life.

A Javascript developer on Freelancer.com can create dynamic web applications with extended features and improved user experiences. They can also design advanced gaming applications, develop cloud applications, and create powerful websites that work with less coding and low complexity.

Here's some projects that our expert Javascript Developers made real:

  • Developed interactive websites & apps with detailed user accounts experience
  • Created powerful applications that streamline complex data into actionable insights
  • Built custom Windows and Mac software designed to fit client specifications
  • Developed mobile apps that enables customers to access data from their phones
  • Connected databases to web interfaces with easy input/output functionality
  • Optimized existing code for faster loading pages and smoother user workflows

Javascript Developers on Freelancer.com know how to turn ideas into reality. They are experienced professionals dedicated to excellence and creating top-notch scripts that are easy to use, reliable and fast. If you have an idea but don’t know how to turn it into technical reality, Freelancer.com is the place to post your project. Hire our expert Javascript developers today!

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    I'm seeking a skilled Full Stack Web Developer to create my e-commerce website from scratch. It's crucial that you have strong expertise in JavaScript/Node.js and React.js - these are the chosen tech stack for the project. Key Skills and Experience Required: • Proficient in JavaScript/Node.js for back-end development • Considerable knowledge and experience working with React.js for the front-end • E-commerce website development experience • Knowledge of integrating various payment gateways I expect beautiful UI, seamless user experience and a secure, robust back-end. Examples of your past e-commerce website projects, especially built using JavaScript/Node.js and React.js, would assure me of your capability to deliver quality work.

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    I am in search of a skilled frontend developer who will bring their expertise. You should be proficient in HTML, CSS, JavaScript, and jinja2. If you have experience with React and Angular, that's even better! The primary goal for this project will be to create a user-friendly interface with a responsive design, and ensure smooth page transitions. This is a sharp, clean design project. You need to re-design this website - make it more attractive and mobile friendly.

    £85 (Avg Bid)
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    I'm looking for a skilled developer who can create a comprehensive employee attendance system with clock-ins. This system should be accessible on both mobile devices and web browsers. Key features I'm looking for include: - Employee Attendance Tracking: The primary function of this system is to keep track of employee attendance based on their clock-ins. - Real-Time Reporting: An important feature for me is the ability to produce real-time reports on employee attendance. I'm open to suggestions for additional features that could enhance the functionality of this system. The ideal candidate for this project should have experience in developing clock-in systems and working with real-time reporting tools. In your bid, please provide examples of similar projects you've wo...

    £3859 (Avg Bid)
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    Java Expert Needed 6 days left
    VERIFIED

    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!

    £72 (Avg Bid)
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    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.

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    I'm looking for a web developer with experience in creating social media platforms and video streaming websites to develop a fully functional website similar to TikTok with some additional features and enhancements. Key Functionalities: - Video uploading and playback: Users should be able to upload short videos and playback the videos uploaded by others. - User profiles and following system: Users should be able to create profiles, follow other users, and have followers. - Explore page with trending videos: I need an explore page that displays trending videos based on popularity. Enhancements: - Improved video quality and playback speed: The developer should ensure that the videos are played in high quality with a good playback speed. - Advanced user profile customization options: U...

    £565 (Avg Bid)
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    I need a proficient web developer to establish a merchandise store for my gambling streaming business. The website should be dynamic, user-friendly and secure. Key Features: • Online shopping cart: This will facilitate easy and efficient transactions on the site. • Product search/filtering: This will help customers quickly find what they're looking for. • User reviews/ratings: Incorporate a system for customers to leave reviews and ratings to build trust with potential buyers. Payment Method: • Must support credit/debit card, PayPal, and Afterpay. There's no rush for the completion of this project, but I expect consistent progress updates. Examples of your previous work are necessary to gauge your competency and style. Ideally, I'm looking for a deve...

    £249 (Avg Bid)
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    I'm seeking a skilled web developer to build an engaging website that promotes my web 3 game. This will not simply be an informational site, but a platform to highlight key elements of the game, and attract a specific audience. Key Requirements: - Knowledge of ins and outs of web 3 games. - Experience in creating websites that appeal to the gaming community. - Ability to design a site that encapsulates the uniqueness and excitement of my game. The website should: - Prominently feature gameplay mechanics, character designs, and in-game rewards. - Appeal to and engage gamers, the primary target audience. Investors also. If you have a knack for game-focused web design, I'd love to hear from you.

    £2994 (Avg Bid)
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    46 bids

    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.

    £10 (Avg Bid)
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    I am new to react I need to move the item from the column 3 to column 1. Initially I developed static code. then I used react-beautiful-dnd and splice logic to move item from source to destination I even debugged by putting console.log. console not printing, Providing my code below. Can you let me know how to fix it. ,src%,src%2FApp.jsx&terminal=dev

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    I need a custom chromium browser with some features 1 - Users wont be able to install any extensions 2 - Chromium will come with 4/5 pre-installed extensions (I have extensions that runs in developer mode but not in crx file format) 3 - Disable all debugging and developer tools 4 - Disable View-Source 5 - Disable extensions un-install and install feature 6 - Disable settings and also disable all chrome:// features

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    Add new table to store existing order. (No CRUD, just save) Work with ftp only. Freelancer who can follow only. Additional work, additional pay

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    Needs to hire 2 Freelancers Warning: No TIME WASTERS. Only working directly with Developers only No third parties or Sales Guy or CEO prohibited on this project: will be reported n case of violence: most of the bidders are just time wasters so please make sure you are not one of them Dum persons. thanks we are looking Expert in Vue JS - Front End - Web API .Net core and good knowledge of handling web of Vue.js 2 and Vue.js expert level experience this gonna be a long term project for a right and skilled dev we are looking, so no time wasters please bid only if you are skilled full because technical screening will be done before hiring over here. we have project just started and right candidate expectation is to grasp and get going on it we are easy going company and only required a quali...

    £23 / hr (Avg Bid)
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    Add new table to store existing order. (No CRUD, just save) Work with ftp only. Freelancer who can follow only. Additional work, additional pay

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    We are looking for a highly skilled development team to recreate a complex web platform in JavaScript. This is expected to be a three to six month project, requiring a minimum of six full time developers. This platform will reside on the AWS network, preferably using MySql and Linux. We will be recreating a PHP/MySQL platform to a JavaScript/MySQL platform with approximately 200 features. This new platform will require a significant upgraded user experience, integration of animated graphics and faster reports processing. Our current platform has some components that are 10 to 20 years old. You will be creating from scratch and not using ANY of the current code. Key Developer Requirements: - Extensive experience in JavaScript platform development. - Access to skilled User Experience...

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    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...

    £144 (Avg Bid)
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    I'm urgently seeking a professional who can install and configure Metin 2 game server files on a BSD system. The successful completion of this task will involve the integration of various features including: - User Account Management: The system should have a robust user account management system that ensures player data is securely saved. - In-Game Purchase System: I need an in-game purchase system that allows players to buy items and upgrades within the game. - Leaderboard Integration: A competitive aspect is essential for player engagement. I need the freelancer to set up a leaderboard system within the game. I'm expecting the project to be completed as soon as possible, hence the need for a freelancer with experience in setting up similar game servers and systems quickly an...

    £95 (Avg Bid)
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    22 bids
    Full Stack Developer Needed 6 days left
    VERIFIED

    I am in need of a Full Stack Developer who is proficient in Javascript, PHP, CSS, as well as all the latest stuff, and has experience with database integration and responsive design to fix our dating website(s) and database. The live project you will be working on it and some of the sites that are identical but branded differently but also part of our network of free dating sites. We will be integrating 60 or so sites into one and making many changes. Some will need to be recoded and some things can be saved. Prefer bite sized approach focused on a trusting long term relationship. You should be highly skilled and fast as well as what you do. We prefer a single individual or very small team. There is also code hacks that are redirecting out traffic that needs to be sorted out. Key ...

    £40 / hr (Avg Bid)
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    I need the Small web application . Details will be discussed.

    £5 - £53
    Sealed
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    36 bids

    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.

    £17 / hr (Avg Bid)
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    I'm looking for an experienced coding teacher, specifically having strong proficiency in JavaScript. The teacher must be capable of simplifying the complex coding world for teenagers (13-19 years), preferably someone who has prior hands-on experience in teaching this age group. The unique twist in our lessons should be an emphasis on photography; let's use coding to bring the magic of photography to life. - Proficient in JavaScript - Experience in teaching coding to teenagers - Familiarity with concepts of photography - Strong pedagogical skills, easing the understanding of complex terminologies. This is an exciting opportunity for a teacher passionate about inspiring a love for coding in the teenage cohort. Using photography as our base, we will provide an enriching and enjoy...

    £14 / hr (Avg Bid)
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    26 bids

    I'm seeking an experienced developer to create a user-friendly, desktop application that will allow me to send and track emails. The primary purpose of this application will be to track link clicks, so a strong emphasis on this functionality is necessary. Key Features: - Ability to send emails with tracking links - Detailed tracking system that monitors link clicks - Easy-to-use interface for managing email campaigns - Customizable email layouts to make the emails visually appealing The ideal candidate should: - Have experience in developing desktop applications - Be proficient in creating applications with email sending capabilities and tracking functionalities - Be able to create a user-friendly and visually appealing interface for the application Your proposal should include a ...

    £415 (Avg Bid)
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    POCKET OPION API 6 days left
    VERIFIED

    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.

    £16 (Avg Bid)
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    I'm seeking a highly skilled fullstack developer who is proficient in PHP, .NET, and especially SQL for diverse web application projects. Your primary role will be equal focus on both front-end and back-end development on multiple platforms, including WordPress and PHP. Mandated Features: * Database Integration - Structuring, optimizing, and ensuring smooth functioning of databases within applications. * API Integration - Implementing third-party APIs comprehensively. Ideal Skills and Experience: * Proficient in PHP, .NET, and SQL. * Strong experience with WordPress. * Proven full-stack capabilities. * Expertise in Database and API integration. * Good problem-solving abilities and attention to detail. We're expecting high quality work with minimal supervision. If you have s...

    £422 (Avg Bid)
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    108 bids

    I am seeking an experienced developer to deploy my web application. Details: - The web application is built using JavaScript Node.js - The preferred hosting platform is Amazon Web Services (AWS) Key Skills Needed: - Experience with JavaScript Node.js - Experience with AWS - Strong understanding of web application deployment I am expecting a seamless deployment with minimal downtime. If you have the needed experience and skills, kindly submit your bid along with any relevant portfolio items. Thank you.

    £106 (Avg Bid)
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    25 bids

    As the project pivot, I am seeking a proficient mobile application developer to create a React Native app that delivers real-time location tracking on both iOS and Android platforms. Key Features: • Device Tracking: The app should proficiently track a smartphone and provide real-time location tracking. • Map Integration: The location should be live-displayed using Google Maps. Security Features: • State-of-the-art security is vital. We anticipate integrating two key features: data encryption and two-factor authentication to ensure secured access. Ideal Profile: • Proficient in React Native • Capable of integrating a smartphone location • Knowledge and experience with implementing secure coding practices, especially with data encryption and two-factor...

    £1875 (Avg Bid)
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    55 bids

    I need a skilled Python developer to add functionality to my existing Python code. This is a time-sensitive project that requires immediate attention. Key Responsibilities: - Modify the existing Python code to incorporate new functionality as mentioned in the requirements. - Make sure the code can run on Linux and Windows systems. - Make sure the system can run on multiple monitors simultaneously. - Ensure the code remains optimized and efficient after implementing new features. - Test the updated code thoroughly to identify and fix any potential issues. - Delete the ''About'' tab - Modify how the system looks. Ideal Candidate: - Proficient in Python programming language. - Experience in modifying existing code to add new functionalities. - Familiar with Linux system...

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    Investment website ➢ This system work as an investment company (referral program). ➢ This system has just one level (thirty(30), where someone can invite unlimited of members, This system has an admin who manage all the system users and transactions. When someone want to register new user first he just click register new user, then he will register a new user for level.(the payment detected from the reiterator trust wallet account) then he will send the user names and password to the new user and the new user will log in and he will see the level unlocked for his self which his friend unlocked for him We will explain the system in picture for better understanding. For example, we explain the level which cost is equal to thirty ($30) When the button is clicked then here should shows...

    £124 (Avg Bid)
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    i am looking for a freelancer who can take an existing project and upgrade to latest version, change code structure and add new avatars in the project This is the startup project, i want the developer to change and add options of avatar person and also make few changes as required Need to use and react.js

    £76 (Avg Bid)
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    **BEFORE YOU BID*** Its.a tiny enhancement on a script so dont bid crazy amount. I'm looking for a skilled Flutter/Dart developer who has experience in enhancing classified scripts. The objective is to adjust the search logic of my app to display products which are listed within a 30 kms radius from the user, shifting from a city-based search to a more precise GPS-based one. To achieve this, key features to be enhanced include: - Maps integration - Location-based product search - User-friendly interface The user's location should be determined via GPS coordinates, with Google Maps facilitating the location-based search feature. I am targeting smooth functionality and a surges in user engagement with this upgrade. Experience with the Flutter App with Laravel Admin Panel as ...

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    I'm seeking a skilled developer to help integrate the Shopify API with our Supplier platform. Our primary goal is to automate order request / fulfillment between these two platforms seamlessly. I synchronize products from the supplier using syncee. The problem with the data feed manager and external supplier at syncee is that you cannot make an order request to the supplier. Since the data feed contains special purchase prices, manual orders are not an option. I have attached a flow chart from the supplier on how the order request should be set up. Order request using POST. I assume this should be relatively easy to set up using the shopify api, php script and maybe webhooks. Key Requirements: - Build a reliable integration between Shopify and our Supplier platform. - Ensure the au...

    £141 (Avg Bid)
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    I'm seeking expertise in deploying a web application built on both PHP and Node.js into an Ubuntu server. The web application utilises a MySQL database. Key requirements for this project include: - Proficiency in PHP and Node.js - Experience in deploying web applications on Ubuntu servers - Familiarity with the MySQL database management system - Ability to work without specific server configurations While there's no specific server requirements in this project, a strong understanding of default configurations and potential issues in Ubuntu servers is highly beneficial. This project does not require custom firewall rules or specific software versions, offering more flexibility to the chosen freelancer.

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    Fix error in API only.(1 API) Work with ftp.

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    I'm looking for a professional who can develop a standalone web scraper for Envato Requirements as provided here - Looking for someone who can begin immediately and finish this within 24 hours. Please only bid, if you're able to finish this in 24 hours

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    Need a responsive HTML page with a button, following functionality should only apply to a mobile device view (width < 780px) Once clicked the camera app should launch with an overlay frame, the overlay should include 2 buttons: A 75% transparent camera icon should capture the picture once clicked. The red button should close the camera app with the overly Once a picture is taken a confirmation page should show the recently taken picture with an overlay asking for confirmation and an button for retake (see confirmation page) Once the picture has been confirmed an asynchronous process should start compressing the picture on the client side and upload it to a digital ocean space. The application should be to capture the remaining pictures and display the confirmation page and asynchron...

    £117 (Avg Bid)
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    I'm in need of an experienced and skilled Node.js developer to handle various maintenance tasks on a full-time and long-term basis. Key Responsibilities: - Regular maintenance tasks, including fixing bugs and errors, updating libraries and dependencies, and optimizing performance. Ideal Candidate: - Proficient in Node.js with a solid track record of similar projects - Previous experience in handling maintenance tasks - Strong problem-solving skills - Good communication skills - Ability to work full-time and commit to a long-term engagement Please share your experience in your proposal. I prefer instant messaging for communication.

    £252 (Avg Bid)
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    I'm looking for a skilled AngularJS developer capable of building a telematic portal. Key Responsibilities: - Implement real-time data visualization. - Incorporate comprehensive device management features. - Develop a robust alert and notification system. The successful candidate should have significant hands-on experience with AngularJS and demonstrate a keen understanding of RESTful API integration. Prior work with single-page applications will also be an advantage. Experience with real-time data binding will be of significant benefit. The objective of this project is not only to build a feature-rich telematic portal but also to ensure a seamless and intuitive user experience. Hence, proven UX/UI design skills are a must. This project will require a thorough understanding and e...

    £21 / hr (Avg Bid)
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    Looking for an experienced web scraper to extract the followers count data from Twitter user profiles as quickly as possible. Your task is to build a simple and efficient scraper specifically designed for this purpose. reply with header %fdri30 so i can understand you are not a bot.. the scrapper will read the user names from file the format is like this Swan;; We are witnessing the Bitcoin Gold Rush. #Bitcoin;; 2024-05-12 15:35:18 Vivek4real_;; The simplest explanation of why we need #Bitcoin;; 2024-05-12 13:13:51 script will edit the file and add each user's followers count to end of line like this so the logic shouold be to add at the end of each line, the columns order can change...but as long as it adds at the end of each line it is perfect Swan;; We are witnessing the Bi...

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    The project requires comprehensive full-stack development skills, with the aim to create a robust and functional website targeting students. The layout should be intuitive, offering a seamless learning experience. Key Features: - A fully functional and interactive landing page that includes contact forms and social media integration for enhanced communication. - A secure payment gateway offering an effortless checkout process for users. - Implementation of video and study material storage facilities. - Live classes integration providing real-time learning experiences. Study Material Details: - Incorporation of text files, video lectures, and interactive quizzes for a well-rounded learning experience. The project offers a strict timeline, hoping to complete within 1 month. Ideal freela...

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    Add new table to store existing order. Work with ftp only. Freelancer who can follow only

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    18 bids

    I'm looking for a skilled developer to integrate an auto-update functionality into my existing Tauri application. Requirements: - The auto-update feature should be set to update the application automatically in the background. - The application should restart automatically after each update to ensure users are always using the latest version. The auto-update feature should be optimized for both Windows and MacOS. Ideal Skills and Experience: - Proficiency in Tauri framework - Experience in creating auto-update features for desktop applications - Strong knowledge of Windows and MacOS platform-specific requirements for auto-updates - Strong problem-solving skills - Ability to work independently and reliably. If you're confident in your ability to create a seamless, reliable ...

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    write a simple proof of concept client side html/javascript web page that authenticates using firebase-ui

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    I need a comprehensive approval system set up on my Sharepoint Online platform. Key Requirements: - Customized Forms: I'm looking to have unique forms tailored to our specific needs. This includes: - Custom Layout and Design: The forms should be visually appealing and user-friendly. - Additional Fields and Sections: Fields that are not present in standard forms should be added where necessary. - Dynamic Dependent Fields: Some fields should appear or disappear based on the user's previous selections. - Manual Submission: The approval workflow should be initiated when users manually submit a form or a request with the drop downs available. Ideal Skills and Experience: - Proficient with Sharepoint Online. - Extensive experience with creating approval systems. - Strong back...

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    As a developer aiming to enhance an existing web demo, I currently require an expert in Augmented Reality, Vuforia, and APIs. In this project, the prime focus is: - Setting up the Vuforia API and integrating it with our existing web platform At our current development stage, we already have added new targets to Vuforia without verifying if the target already exists. Your role would include adding missing pieces to the whole setup and presenting a fully functional, error-free project. Ideal Skills Required: - Proficient in Augmented Reality applications - Expert in using the Vuforia platform - Adequate experience and understanding of API integrations, especially with Vuforia

    £75 (Avg Bid)
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    I require a skilled front-end developer experienced in React to create a responsive web app from -Webapp should include all existing screens from including the home, login, and product listing pages. - Main functionality to replicate the e-commerce platform "gopunt". - Essential features to be implemented: • User registration and login • Product search and filtering • Shopping cart and checkout. The successful freelancer will have strong skills in cloning interfaces, with previous React frontend work with e-commerce platforms preferred. A good understanding of User Interface (UI) practices and principles will also be highly regarded.

    £487 (Avg Bid)
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    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...

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    I'm in need of a software to manage our wood inventory. The software should be based in Google Sheets, as it's the platform that we currently use. We're looking for a real-time tracking system that will help our warehouse staff to monitor our current stock levels. Key Features: - Real-time inventory tracking: We need a system that updates automatically as employees make changes to the stock levels. - Google Sheets integration: It's important that the software is built directly into Google Sheets, as it's the platform we're familiar with. - User-friendly interface: Our warehouse staff have varying levels of technical expertise, so the software needs to be intuitive and easy to navigate. Please note, we're looking for an inventory management solution that...

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    necesito unas revisiones y personalizaciones de informes sobre un script comprado en codecanyon llamado Stock Manager Advance

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    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 ...

    £124 (Avg Bid)
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    56 bids

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