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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    617 jobs found, pricing in USD

    I'm in search of a talented web developer who is proficient in HTML, CSS, JavaScript, and React JS. Your familiarity with React and Angular is a big plus. The ideal candidate should also be adept at creating an e-commerce site and have a knack for user registration/login systems and responsive designs. Key Project Requirements: - Proficiency in HTML, CSS, JavaScript, and React JS - Experience with Angular - Creation of a user registration and login system - Development of an e-commerce functionality - Strong portfolio creation abilities - Skilled in creating responsive design for websites Your role will be pivotal in the creation of a comprehensive website that is user-friendly, visually appealing, and capable of handling e-commerce transactions. Please be ready to share examples ...

    $7 (Avg Bid)
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    I have performed some optimization tasks on my WordPress website to increase its Google Page Speed, including working on images and media files, caching mechanisms, JavaScript, and CSS files. However, my website is still scoring low in Google Page Speed Insights. Key tasks: - Perform a thorough audit of the website to identify the inefficiencies that are impacting the speed. - Implement advanced optimization techniques to increase the Google Page Speed score significantly. Ideal skills and experience: - Proven experience in optimizing WordPress websites for speed. - Expertise in working with images and media files, caching mechanisms, JavaScript, and CSS for performance improvement. - Strong understanding of Google Page Speed Insights and how to interpret and respond to its recommendatio...

    $2 / hr (Avg Bid)
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    We are seeking an experienced Angular Developer to work with us. You will be responsible for developing and maintaining high-quality Web application. The ideal candidate should have a strong understanding of Angular, and mobile development best practices. Skills required: - Angular - HTML/CSS - JavaScript - bootstrap

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    - Implementation of a feature that toggles audio output between Speaker and earphone in a React Webview screen inside a React Native app - The feature should be user-friendly, enabling seamless switching between the two audio outputs Ideal Skills: - Proficiency in React Native and React - Experience with audio output handling in mobile applications - Understanding of Android audio controls and React Native Webview integration If you have the necessary skills and experience, please get in touch.

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    I'm looking for a Laravel expert to help me integrate my POS system with my existing website. No live tracking, no location or other. Maximum 2-3 days task Key deliverables of this project include: - Seamless integration of the POS system with the website. Order from website goes to POS. - Website order in POS to POS print receipt screen. - Website: Multiple login (Google, Facebook) - Website: Eway payment sandbox integrated but also want to save payment details. - Website: The website only provides delivery option. Add pickup option also. Please include relevant examples of your previous work in your bid. Budget maximum: 150 USD

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    I'm looking for a skilled developer who can create a basic informational web application. This should be designed with React and JavaScript and will need to connect with an API. Key Requirements: - The application must have a clean and user-friendly interface - It should contain necessary information in an organized manner - The use of React and JavaScript is a must - It should be designed for a quick development turnaround ideally ASAP This project primarily involves the design and development of the web application. The goal is to create a simple, fast, and fully functional application that serves as an informational platform. Ideal Skills and Experience: - Proficiency in React and JavaScript - Experience in designing and developing simple web applications - Previous work with AP...

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    I'm looking for an experienced freelancer or team to create an all-inclusive home delivery platform that mirrors the functionality of popular platforms like Zomato and Swiggy. The platform should be user-friendly and efficient, catering to both customer and restaurant needs effectively. Key Features: - User Registration and Login: The platform should have a seamless registration and login process for users, ensuring a personalized experience. - Restaurant Search and Listing: A robust search functionality that enables users to easily find and explore various restaurants in their vicinity. - Menu and Item Selection: The platform should support detailed menu listings and an intuitive item selection process for users. Payment System: - The platform should support multiple payment option...

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    I need a developer to implement a searchable combobox within the Lightning Web Component (LWC), interfacing with both Apex and Visualforce Remoting. Key Requirements: - The combobox will need to handle custom object data - The search functionality should be designed for contains matching. Ideal Skills and Experience: - Proficiency in Salesforce LWC development - Strong background in Apex, Visualforce Remoting - Previous experience with implementing searchable components on Salesforce platform - Familiarity with handling large datasets using Salesforce's Visualforce Remoting. Your main focus will be on building a responsive, efficient combobox that can handle the large data volumes we work with. The combobox should accurately and rapidly display results based on the user's in...

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    I'm searching for a skilled ServiceNow developer to assist with crafting custom applications and configuring workflows and approvals. Your primary focus will be client scripts and business rules. Your tasks would include: - Creating client-side validations - Automating field calculations Experience with integrating external systems is beneficial, but not mandatory for this project. There's 2 days strict deadline, giving you the flexibility to ensure top-quality results.

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    I am looking for someone experienced in building tool websites with an emphasis on monitoring changes on various websites. The primary function is to detect and report on content changes, with users receiving notification of these adjustments via email & sms alerts. Ideal Requirements: - Proficiency in building tool websites for monitoring purposes. - Knowledge in setting up a system to detect website content changes. - Experience in integrating email alert notifications for users. - Loading Capacity 500+ Websites Searching per Hour - Foresight in creating an interface user-friendly even for non-technical users. This project will require strong analytical skills and a sharp eye for detail. I'm excited to work with someone who understands the critical need for website updates...

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    I'm seeking an expert in AI content generation to help me create a SAAS platform. This platform will use cutting-edge AI technologies like OpenAI, Mistral, Gemini, and Copilot. The goal is to efficiently provide a wide range of content types including text, image, sound, video, chat, voice, and code. The SAAS would looks like this : Key Requirements: - The AI content should be capable of generating text, image, sound, and video. - The AI models should have functionalities such as translation, summarization, sentiment analysis, and more. - It is crucial that these AI models are integrated to form a seamless and user-friendly SAAS platform. Ideal Skills for This Project: - Proficiency in AI content generation and experience working with leading technologies in the field. - Strong ...

    $1107 (Avg Bid)
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    I am looking for someone experienced in building tool websites with an emphasis on monitoring changes on various websites. The primary function is to detect and report on content changes, with users receiving notification of these adjustments via email & sms alerts. Ideal Requirements: - Proficiency in building tool websites for monitoring purposes. - Knowledge in setting up a system to detect website content changes. - Experience in integrating email alert notifications for users. - Loading Capacity 500+ Websites Searching per Hour - Foresight in creating an interface user-friendly even for non-technical users. This project will require strong analytical skills and a sharp eye for detail. I'm excited to work with someone who understands the critical need for website updates...

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    I'm in need of a developer who can create a web-based lottery system for me. The system should be designed to allow anonymous participation, with the winners being selected automatically by the system. Key Features: - Web-based: The lottery system should be accessible through web browsers. - Anonymous participation: Users should be able to participate without the need for user registration. - Automated winner selection: The system needs to be able to select winners automatically without manual intervention. Ideal Skills and Experience: - Proficiency in web development - Experience in creating lottery systems or similar - Knowledge of automated selection processes This project involves a good amount of logic and system design, so experience in similar projects is highly valued. Yo...

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    I need help setting up my nextjs website's cookie consent to be compatible with Google Consent v3. Key Requirements: - Write codes to setup cookie consent with google tag manager. - Ensure the cookie consent setup is specifically for Google Consent v3 compatibility. - Make sure the setup with Google tag manager. Ideal Skills: - Next js. - Familiarity with Google Consent Mode v3.

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    I'm looking for someone who can create a WordPress plugin for scraping manga websites. Plugin Requirements: 1. Grab per chapter by link. 2. Grab full chapter by link. 3. Grab new manga by link. 4. Compatible with various manga themes. 5. Images from the scraped content should be uploaded to s3 storage. 6. Must have 10 sources for scraping (with a guarantee that if one source fails or the website goes down, it can switch to another source). Usage Flow: 1. I create a manga post and fill in the manga link in the metabox. 2. The plugin will automatically fill in the chapter links, scrape HTML images, and create posts. It will also automatically fill in the chapter number and the manga post ID number based on the manga link. Note: Speed during scraping is very important.

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    As the project owner, I'm seeking a professional skilled in Pine Script with experience in retrieving code from private scripts on Trading view. The key objectives of this project include: - Extracting the Pine Script code from a specific invite-only script (the script name will be shared privately upon project commencement). Unfortunately, it's currently unknown which specific script to be used, but clarity will be provided as the project progresses. - Discern the implemented functions within the script. The functionalities mainly centered around recognizable trading indicators like Moving averages, Pivots, Fibonacci and MACD. - The code extraction should consider compatibility with variable timeframes. Whilst exact timeframes aren't specified yet, flexibility should be ...

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    I need a simple website developed using the MERN stack that includes a registration form and authentication process. Furthermore, it should be able to track and store visitor activities. Key Features: - Registration Form: The site should have a registration form that collects Name, Email, and Phone Number. - Authentication: Users should only be able to access certain pages post-authentication. The authentication process should be a combination of Email verification and OTP verification. - Visitor Activity Tracking: The site should be able to track and store visitors' activities which includes pages visited and its Date and time, User location, IP address, and User device. Skills and Experience: - Proficiency in MERN stack development. - Strong understanding of authentication process...

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    I'm looking for a professional who can efficiently host a React.js website on an already available server using Spanel. Although the server already supports React.js apps, your expertise in leveraging these pre-existing resources will be invaluable. I have no additional requirements in mind with regards to SSL certificates, custom domain setup or redirect configurations, however I do appreciate proactive suggestions based on your professional judgement. Ideal candidates should have: - Prior experience in hosting React.js applications via Spanel - Proven track record in deployment and website optimization - Familiarity with server environments and configurations - Excellent problem-solving skills when it comes to potential hosting challenges. - Constructive communication capabilit...

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    I've purchased Project A from Codecanyon and need some customizations to enhance its functionality. We're looking to add new features to the existing web application. These include: 1. Filter students by religion and gender (Dropdown filter needs for additional filter only gender and religion) 2. Send individual message by filtering class, section and marking by roll And some more 3. I need to show here some important field by default from student and parent profile Gender Religion Father's name Mother's name Mobile number Date of birth Address Image (print in pdf) 4. I have some issue to fix on result system. Need to modify class name tyme 1. Compulsory (WIll add full marks and GPA with Result) 2. Optional (WIll add full marks and GPA wi...

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    I need a Blazor application, like a teleprompter, that allows users to control the scrolling of text by reading out loud the text. When the user stops reading, the scrolling stops. When the user starts reading again, the text should resume scrolling. It should be specifically designed for web browsers, being compatible with Google Chrome, Mozilla Firefox, and Microsoft Edge. Key requirements include: - A voice activated scroll feature that operates when the user finishes reading a line of text. The text should then automatically scroll upward. - If a user misses a word or line of text, but starts reading the next line, the scrolling should resume from the new line. - The application should be responsive, efficient, and user-friendly. The successful freelancer should have experience w...

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    I'm in need of an experienced Software Developer who can work on various types of websites - be it an e-commerce site, an informational website or a personal blog. The potential candidate should be flexible enough to adapt to different website projects. Ideal Candidate: • Skilled in various software development tools • Has experience in various types of website development • Commits to deadlines • Pays attention to details Note: The user did not specify particular features they desire for their website, but be ready to implement if needed. Please provide samples of your previous multi-platform work when bidding. Can’t wait to see what you’ve got to offer.

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    We are looking for a programmer to create the search engine for our magento 2.4.6 with Proto Theme website using Algolia search. The programmer has to implement the algolia search engine using his own code following the guidelines published by Aloglia to use it in the main page and in the search results page. It must include the following Filtering by attributes ( brands, specific attributes, color, etc) Keyword filtering Filtering by categories The search results should be displayed in a js block on the home page and in the search results. The theme used in magento 2.4.3 is "Fatest by codazon". Please only serious people, we don't want people who spend half as much time searching as doing the work on stackoverflow. Some examples of how we would like to implement it

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    I am searching for an expert , GSAP, and VanillaJS developer for an urgent 3D animation project. Specifically, the focus of this project is three-pronged: 1. Implementing my existing design: Although I already have a clear design concept of what I want, I will need you to translate this into code efficiently and effectively. 2. Emphasizing on speed and performance: It is critical to me that the 3D animations and visualizations developed don't just look good, but also perform well under a variety of conditions. 3. Creating a 3D animation: The primary purpose of the application being developed is 3D animation. I expect lifelike, smooth, and detailed animations. Below are the key traits that the ideal freelancer for this job would possess: - Extensive experience with , GSAP, and Vanill...

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    I need a solution that can automatically insert page numbers onto every A4 page in my document at the bottom. Key Requirements: - The system should work with A4 format. - It should be able to insert these page numbers automatically and consistently on every page. - The page numbers should be placed at the bottom of each page. Ideal Freelancer: - Experience working with PDF manipulation and automation. - Proficient in software that can perform automatic page numbering. - Attention to detail in maintaining consistency in design and positioning of the page numbers.

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    I need an experienced web developer to make my HTML/CSS website available online via GoDaddy's cPanel. This website showcases my business portfolio and should be optimized for smooth navigation and operation. I have all the relevant files and login details required for setup and configuration. Ideal Skills: - Expertise in HTML/CSS - Proficiency in website hosting using GoDaddy cPanel - Experience in site optimization - Good communication and prompt delivery

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    I need a website dashboard centered around trip/job logging. Key requirements include: - Bootstrap 5.3+ - Integration with OEMServer (Digital matter) - Vehicle tracking and historical route logging Beyond this, the dashboard must have a comprehensive vehicle tracking system. It must leverage GPS tracking, have the option to provide real-time location, and be capable of mapping and storing historical route, vehicle and client information to a database. The ideal freelancer for this role should have strong experience in GPS technologies, and real-time data feed implementation and developing historical route tracking and storing. The aim is for a responsive, user-friendly, and efficient website dashboard that fulfills these roles effectively.

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    I am in urgent need of a proficient React.js developer who can help sort out a functional issue within the frontend of my code. The exact concern entails implementing new features that aren't working as they should currently. So, a comprehensive understanding of React.js and experience in problem-solving complex coding issues will prove critical to solving this task. Of course, a knack for creating functional, user-friendly features would be absolutely ideal.

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    Online Casino Game Provider 6 days left
    VERIFIED

    we need a online casino dev can provide us the game on the list

    $4388 (Avg Bid)
    NDA
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    13 bids

    Project Description: We are seeking a skilled Java developer to contribute to the development of an e-commerce platform ( A BASIC DESIGN ) with the following key features: User Management: Implementation of user accounts with basic profile information (name, email, password). Product Management: Creation of a product listing functionality with basic product details (name, description, price, category, etc.). Inclusion of at least 100 sample products for demonstration. Recommendation System: Integration of an AI-based recommendation system. Display of recommended products on the user dashboard. Continuous updating of recommended products based on user view history. Search: Implementation of search functionality using AI recommendations. Provision of search suggestions based on personal rec...

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    I'm starting a new website from scratch and need a talented developer who's proficient in both ReactJS and Next.js. Some key points to consider: - The primary goal of this project is to build an E-commerce website. - The site needs to be developed with a combination of ReactJS and Next.js. - The design should be responsive, clean, and user-friendly. - Understand the importance of SEO best practices and how to implement them. I believe that a detail-oriented, experienced, and creative individual will be the perfect fit for this project. If you have a portfolio or relevant work samples, please share them. Your understanding of E-commerce functionality and experience with ReactJS and are paramount.

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    I'm in need of a custom plugin for my WooCommerce store that will alter product prices based on the combination of selected variations. check the functionality of shopify plugin .. need same - screenshot attached Key Features: - Custom Pricing Logic: The plugin should be able to adjust prices based on the combination of product variations selected by the customer. - Live Pricing Updates: The prices should be updated instantly on the product page as soon as the customer selects different variations. Ideal Skills and Experience: - Strong proficiency in WordPress and WooCommerce plugin development. - Prior experience with creating custom pricing logic for WooCommerce. - Familiarity with front-end development for implementing live updates on the product page. - Good understanding of e...

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    We are seeking a talented Machine Learning Engineer to develop a classification model that works with Google Mediapipe Pose Detection and has run trained ML models on web application (using JavaScript) The main task will be training the model to recognising the pose and creating a script for data generation from youtube videos. The trained model should work with the web mediapipe library and classify the given pose on a WebApp (JavaScript). (Eg: Push up and Push Down) You can refer this blog for reference: This project requires expertise in machine learning algorithms and techniques, as well as experience with Google Mediapipe and data preprocessing. The successful candidate should have a strong understanding of supervised learning and be able to optimize the model for accurate pose c...

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    I'm in need of a skilled programmer to create an automation code page for me. This code page will be focused on text processing, so a strong understanding of working with textual data is essential. Key Requirements: - Proficient in JavaScript: The automation code should be written in JavaScript to ensure compatibility with other platforms. - Automation Experience: The primary function of this code will be automating tasks. A proven track record in building automated processes is highly desirable. - Text Processing: The code must be able to accurately and efficiently process textual data. Experience in this field will be a huge advantage. If you have experience in JavaScript, a background in automation, and a strong familiarity with text processing, I'd be delighted to hear fro...

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    I need an experienced programmer, highly proficient in Pine Script, to create a bot for Tradingview. This project involves: - Developing a bot that executes buy/sell orders The bot should be programmed to automatically manage my trading strategy, which will be discussed further upon commencement of the project. The ideal candidate should have extensive experience in Pine Script and understanding of the financial markets, especially within the context of day trading. Your skills should also include proficiency in creating alert systems within bots. I look forward to receiving your bids.

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    Hello, I am looking for a skilled Shopify developer to customize the "Wookie" theme on my Shopify store. I have created a 'trustbar' using the icon banners functionality, which looks great on desktop. However, on mobile devices, the icons stack on top of each other and do not display well. Requirements: Mobile Customization: Transform the current trustbar into a carousel that slides horizontally on mobile devices only. Desktop Integrity: Ensure the trustbar remains unchanged and looks great on desktop. Responsiveness: The carousel should be fully responsive and maintain the visual appeal of the icons. Cross-Browser Compatibility: Ensure the carousel works seamlessly across all major browsers on mobile devices. Clean Code: Write clean, well-documented code that does n...

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    Sync/send contact data and mapped custom fields between CRM and proposal tool to improve accuracy and reduce manual data entry and double handling. Share events. Apps: Go High Level , Pylon Observer REST API & Webhooks available

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    I'm in need of a gambling website that offers a comprehensive experience to users. The site should incorporate sports betting, a variety of casino games, and poker. Key features: - Incorporate all three types of gambling activities (Sports betting, Casino games, Poker) under one platform - Provide secure and reliable payment methods including credit/debit cards and cryptocurrency - Ensure the site is user-friendly, engaging, and responsive on different devices - Implement mechanisms for responsible gambling and compliance with relevant regulations I'm looking to have this project completed within a month, so a quick turnaround is necessary. Ideal skills: - Proficiency in full-stack web development - Experience in creating gambling or betting websites - Strong understanding o...

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    I'm in need of a full stack developer with proficiency in JavaScript, Python, and PHP. The ideal candidate should be experienced in building web applications and software, and must be adept at working with both front and back-end technologies. I have want to deploy my website to live then we start customization

    $19 / hr (Avg Bid)
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    Need support for react web applications i.e., small and medium enhancements to connect daily for 1 hour. Strong react basics including huge knowledge in CSS with Javascript and node js required.

    $11 / hr (Avg Bid)
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    I am in need of an experienced professional to assist in integrating 2 instances of Unleashed. The primary goal is to optimize 3pl, ordering and inventory management by streamlining the process across both instances. Must be able to get Unleashed platform to talk to our clients unleashed account. Providing live stock updates order from one to another live and automating all this. This will need to be completed this week and no later as we have a tight deadline to achieve this. Flow Chart, Shopify Order > Unleashed > (Updates stock levels on clients unleashed as well as our own)> Send order to clients unleashed. Client uploads new stock > updates our unleashed account. Key Tasks: - Inventory Management: Ensure that inventory data is synchronized in real-time between the tw...

    $130 (Avg Bid)
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    I'm in immediate need of a proficient chatbot developer. Equipped with a vision for a minimalistic design, I wish to create a chatbot that should perform the following tasks: - Answer FAQs, mitigating the workload of my team, and increasing customer satisfaction. - Assist with product recommendations, providing users with a personalized and interactive shopping experience. The chatbot is not platform-specific as the platform was undetermined during this scope. However, the potential developer should be flexible with the choice of platform in future discussions. Experience with minimalist design and the ability to create chatbots from scratch are vital. A good understanding of user experience and customer relations in relation to chatbots will also be beneficial.

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    Hello, I need Highcharts Javascript Expert..

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    I'm looking for an experienced NodeJS and JavaScript programmer to help me with a school project focused on exploring cybersecurity concepts. Key Requirements: - The task involves writing a client request to obtain a flag from a vulnerability site with advanced complexity (e.g., bypassing security measures). - The project involves emphasizing on Remote Code Execution (RCE) and pollution while interacting with the vulnerability site, so experience in these areas is a plus. --- Challenge Name: Emu Apothecary Category: Vulnerabilities Description has just opened up their potion brewing website for other Emus to create new potion recipes! However, they are afraid that one of the human hackers will pollute their ingredients. Can you get Remote Code Execution (RCE) on the Emu Apoth...

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    wine shope 6 days left

    the project ate live web in crome

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    I need a skilled Node.js developer to implement specific changes to my existing color prediction game. Key Requirements: - Modify the game logic: Primarily, I want to change the scoring system. This will require a deep understanding of how the game currently operates and how to adjust it effectively. The new scoring system should enhance user engagement and retention. - Connect APIs from other websites: I need to integrate external services into the game, which will require knowledge of API integration processes. This integration should be seamless and reliable, and will play a crucial role in the game's overall functionality. - Implement JWT token for user authentication - Basic error fixing: There are some minor issues in the existing code that need to be addressed. An attention ...

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    Hello, look for an expert programmer to import data from a json, there is a lot of data that includes various data, image, title, categories, tags, etc. and some go in custom fields. I want to take the images from a folder within my own server or use them in that same folder. Please read the description carefully and tell me price and time.

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    I need a developer or team who can implement a multi-login feature on , allowing users to log in from multiple accounts simultaneously. The aim of this feature is to facilitate user management by enabling users to control multiple accounts at the same time. Key Responsibilities: - Integrate simultaneous multi-login feature on - Ensure the feature is user-friendly and stable - Thoroughly test the feature to ensure it's functioning as intended Successful applicants should have: - Proven experience with web development, particularly in implementing login systems - A strong understanding of user management principles - A portfolio showcasing past work, particularly similar projects - The ability to work independently and efficiently to meet project deadlines

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    fix browser extensions 6 days left
    VERIFIED

    It works only when open the Extensions Settings tab in browser need to fix it to work without opening the extension tab

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    I need a Node.js expert to finalize the OTP system for user registration on my website. Key Requirements: - Full Implementation: The system is partially implemented, and I need someone to complete it. The project involves integrating OTP functionality into the user registration process. - OTP Delivery: The OTP should be sent to users via SMS. - and when user forget password it ask otp Pages are already created Ideal Skills and Experience: - Proficient in Node.js: As a core requirement, you should have extensive experience with Node.js development. - Authentication Systems: Prior work on OTP-based authentication systems is highly desirable. - SMS Integration: Experience with SMS gateways and API integration is a plus. Please note, I am looking for a prompt completion of this task. ...

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    PayPal cloaking for SMM Site 6 days left
    VERIFIED

    Simple, user make a purchase on site A then is redirected to site B to make the payment and then is redirected to site A again I am looking for a skilled developer with experience in cloaking payment gateways, specifically Stripe. The project involves cloaking both transaction details, payer information, and order info. Requirements: - Expertise in cloaking payment gateways, specifically Stripe - Ability to cloak both transaction details and payer information and order info.

    $186 (Avg Bid)
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    30 bids

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