
In Progress
Posted
Paid on delivery
I'm looking to develop a browser extension to automate slot selection for USA-based users. Key Requirements: - Automate slot selection based on user-defined criteria. - Support multiple slot picking criteria. Ideal Skills and Experience: - Proficiency in browser extension development, particularly for Chrome or Firefox. - Experience with automation scripts and algorithms. - Familiarity with UI/UX design for user-friendly interfaces. - Ability to handle complex logic for multiple criteria. Please share your experience and approach to this project.
Project ID: 40730239
91 proposals
Remote project
Active 1 min ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
91 freelancers are bidding on average $419 CAD for this job

Hi there, I understand you need a browser extension to automate slot selection for USA-based users. I can develop this using JavaScript and Google Chrome APIs, ensuring it meets your specific criteria. Here’s how I’ll approach it: 1. Analyze and define the user-defined criteria for slot selection. 2. Develop the core automation logic in JavaScript. 3. Create a user-friendly interface for setting up and managing the criteria. 4. Ensure the extension is secure and performs efficiently. I have extensive experience in web development, software architecture, and creating intuitive user interfaces. I’m confident we can deliver a solution that streamlines the slot picking process for your users. Best Regards, Khorshed Alam, RS Software
$290 CAD in 6 days
9.5
9.5

Hi, We can develop a Chrome/Firefox browser extension that automates slot selection based on flexible, user-defined criteria. Our approach: * Review the target website, slot structure, user workflow, and automation constraints. * Design a simple extension interface where users can configure multiple selection criteria and preferences. * Build the extension using a maintainable browser-extension architecture. * Detect available slots and evaluate them against the configured criteria. * Implement prioritized matching logic when multiple slots become available. * Automate the selection flow while handling page changes, delays, errors, and unavailable slots gracefully. * Add clear status indicators so users can see the extension’s current state and actions. * Include configurable start/stop controls and safe failure handling. * Optimize the automation to avoid unnecessary page activity and improve reliability. * Test different slot combinations, page states, browser environments, and edge cases. * Package the extension with clean source code and setup/use documentation. We would first validate the target site's workflow and technical constraints, then finalize the extension architecture and development milestones.
$500 CAD in 15 days
9.0
9.0

⭐⭐⭐⭐⭐ Create a Browser Extension for Automated Slot Selection ❇️ Hi My Friend, I hope you're doing well. I've checked your project requirements and see you are looking for a browser extension to automate slot selection for users in the USA. You don't need to look any further; Zohaib is here to help you! My team has successfully completed 50+ similar projects for browser extensions. I will create a user-friendly extension that meets your criteria for slot selection, ensuring it works smoothly and effectively. ➡️ Why Me? I can easily develop your browser extension as I have 5 years of experience in creating extensions for Chrome and Firefox. My skills include automation scripting, UI/UX design, and handling complex logic for multiple criteria. Additionally, I have a strong grip on relevant technologies, ensuring a comprehensive solution for your project. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. I'm looking forward to discussing this with you in our chat. ➡️ Skills & Experience: ✅ Browser Extension Development ✅ Automation Scripts ✅ UI/UX Design ✅ JavaScript Programming ✅ Chrome and Firefox APIs ✅ User Interface Creation ✅ Algorithm Development ✅ Logic Implementation ✅ Testing and Debugging ✅ Cross-Browser Compatibility ✅ Performance Optimization ✅ User Feedback Integration Waiting for your response! Best Regards, Zohaib
$350 CAD in 2 days
8.0
8.0

Hi, I went through your project details and understand what you're looking to achieve. I'd be interested in working with you on this. Based on the requirements you've shared, I can handle the project from start to completion while keeping the work aligned with your expectations, timeline, and desired outcome. My approach is straightforward: first, I'll make sure the requirements and expected deliverables are clear. Then I'll complete the work in structured stages, share progress along the way, incorporate your feedback, and deliver the final work after everything has been reviewed. Before we begin, I have a couple of questions about your requirements that will help me understand the scope more accurately. Feel free to message me so we can discuss the details and determine the best way to move forward. Best regards, Anum
$250 CAD in 1 day
7.0
7.0

Hello, I have strong experience with JavaScript, Chrome extensions, browser automation, and complex rule based workflows. I can build a lightweight extension that monitors available slots and automatically selects them based on multiple user defined criteria, with a simple UI for configuring priorities and preferences. I’ll keep the automation reliable, efficient, and easy to maintain, with proper handling of page changes and edge cases. I can start immediately and share relevant automation work.
$400 CAD in 7 days
6.7
6.7

With my diverse background as a Senior Software Engineer specializing in front-end web development, I'm confident I can craft a successful browser extension for automating slot selection that suits your needs. My skills with JavaScript, PHP and Web Development will be extensively utilized allowing your users to define their preferred criteria with ease. Throughout my career, I've gained significant knowledge and experience in browser extension development for Chrome and Firefox. Paired with my proficiency with automation scripts, I can handle the complexity of your project effortlessly. Beyond just creating functionally advanced software, I also appreciate the importance of an intuitive design. My knowledge in UI/UX design will ensure the interface of the extension is user-friendly for optimal usage. Furthermore, my commitment to maintaining a long-term relationship aligns perfectly with your project's objective. To keep you informed and involved in every stage of development, we'll utilize platforms such as AWS or Google Cloud. My past experiences with these services have given me a firm understanding of this environment and its potential challenges. In conclusion, as your partner on this project, you can expect technical expertise, dedication and perfect chemistry driving us towards extraordinary results. Let's start working together to make slot-picking easier than ever for US-based users!
$250 CAD in 5 days
6.5
6.5

Hi, Slot pickers are almost never a DOM problem — the booking site releases inventory through an API and the page just renders it, so an extension that clicks visible slots is always a step behind. The reliable approach is to watch the same XHR/fetch responses the page uses, match against your criteria, and fire the reserve call the instant a slot appears. I'd build a Manifest V3 extension with a small options page for your criteria (date range, location, time window, priority order), a background worker doing the polling with sane backoff so you don't get rate-limited, and a clear log of attempts. Which site or portal is this for, and does it require being logged in with a session the extension can reuse?
$353 CAD in 5 days
6.0
6.0

Yes, this is a good fit for a Chrome/Firefox extension, with the automation logic separated from the UI so slot criteria can evolve without rewriting the whole extension. The core challenge is not simply clicking an available slot, but reliably evaluating multiple user-defined rules such as date range, time window, location, priority order, and fallback preferences while handling page refreshes and DOM changes safely. I’d build the extension with Manifest V3, TypeScript, content scripts, background/service-worker logic, and a compact settings panel for managing those criteria. For reliability and maintainability, selectors and page-state detection would be isolated into reusable modules, with clear error handling and status feedback so failures are visible instead of silently stopping. A relevant project is FileChannels, where I worked on a Chrome extension alongside a React-based platform with real-time messaging, CRM integrations, WebRTC, and synchronized workflows.
$600 CAD in 7 days
6.3
6.3

Hi, I understand you're looking to develop a browser extension to automate slot selection for USA-based users, with a focus on supporting multiple slot-picking criteria. This project requires a robust automation script that can efficiently handle user-defined criteria while maintaining a user-friendly interface. The main technical challenge here is ensuring the extension can reliably interact with website elements to select slots based on dynamic criteria. My approach would involve first assessing the target websites' structure to ensure compatibility and stability. This includes prioritizing the extension's ability to adapt to changes in the website's code, which is crucial for maintaining functionality over time. I have extensive experience in developing browser extensions, particularly for Chrome, and have worked on similar automation projects using JavaScript and PHP. My background in software architecture will be instrumental in designing a scalable solution. Q1 – What specific websites or platforms should the extension target for slot selection? Q2 – Are there any particular user-defined criteria that need to be prioritized in the automation process? Q3 – How frequently do you anticipate the criteria or target websites will change, affecting the extension's functionality? Looking forward to hearing from you.
$250 CAD in 7 days
6.0
6.0

Dear Client, I read "USA Slot Picking Automation Extension" carefully and understand you want clean, modern Figma designs that translate smoothly into a real product. My hands-on experience with PHP, JavaScript, Web Development aligns directly with what you need. I design in Figma with a focus on usability and visual polish — wireframes, high-fidelity mockups, prototypes and design systems — handed off dev-ready so nothing gets lost in build. A few quick questions to get us started: 1. Is this for a website, mobile app, or both? 2. Do you have existing branding (logo, colors, fonts), or should I help define it? 3. Do you need clickable prototypes, or static screens with a handoff-ready design system? Thanks & Regards, Deepak
$488 CAD in 14 days
5.8
5.8

A slot-picker extension needs a loop: detect page state, evaluate user criteria, show the chosen slot, and avoid accidental submissions. I have 9+ years building software, including an AI website generation platform and B2B, e-commerce and marketplace systems. I have not shipped this exact extension, so I will not invent one. I can build Chrome/Firefox extension components: options UI, content scripts, a criteria engine for date, time, location, category and availability, plus a page-state adapter. I’ll keep permissions minimal, avoid storing credentials or sensitive data, and make actions visible, reversible and rate-limited. The adapter can handle DOM changes, delayed content, disabled slots and errors; an official API is preferable where available. QA covers multiple criteria, no match, slow loading, refresh recovery, permissions, duplicate clicks and manual confirmation boundaries. Delivery includes source, build notes, tests and handover. Which USA website and browser versions are fixed, and should it select/highlight a match or submit the final choice? My C$500 bid covers 7 days for the extension slice, criteria UI, matching flow and QA. I can start with the page-state map.
$500 CAD in 7 days
5.6
5.6

Hi, We at Resonite Technologies are excited about the opportunity to develop your browser extension for automating slot selection for USA-based users. Our proven experience in browser extension development, coupled with a dedicated team proficient in automation scripts and algorithms, positions us uniquely to meet your requirements effectively. Our approach will include: 1. Requirement Analysis: Collaborating closely with you to understand user-defined criteria for slot selection. 2. Development: Leveraging our expertise in Chrome and Firefox extension development to create a robust solution. 3. UI/UX Design: Ensuring a seamless, user-friendly experience that accommodates complex logic for multiple picking criteria. 4. Testing & Feedback: Rigorous testing to ensure functionality and gathering your feedback for continuous improvement. We are committed to delivering a high-quality extension that meets your needs and exceeds your expectations. Best regards, Karthik B Resonite Technologies
$1,000 CAD in 7 days
5.6
5.6

Hello Sir, I have already worked on similar types of website and software development projects and I am confident that I can successfully handle your project. I am a full-time freelancer with **17+ years of experience** in web development, software development, automation, and API integrations. My expertise includes: * ASP.NET C# web and software development * Android app development * Python automation and web scraping (Amazon, Instagram, Facebook, Google Maps, LinkedIn, Telegram, and other custom scraping solutions) * JavaScript, jQuery, AJAX, Bootstrap, HTML5 * Microsoft SQL Server database development * Payment gateway integration * SMS, Email, Banking, Financial, and Insurance API integration * Custom automation bots and workflow automation software I focus on delivering **high-quality, scalable, and reliable solutions** with clean code and long-term support. Please contact me in private chat so we can discuss your requirements in detail. I can also show you a **demo of similar projects** I have completed. Looking forward to working with you. Thanks & Regards
$750 CAD in 3 days
5.7
5.7

Hi there, I understand you need a Chrome/Firefox extension that monitors available slots and selects the right one automatically according to multiple user-defined criteria, while keeping the interface simple enough for non-technical users to configure. Rather than relying on words, I can build a working demo to demonstrate the approach, functionality, and quality firsthand shortly. I can build the extension with JavaScript using a modular criteria engine, background/content scripts, configurable rules, slot filtering, availability detection and a clean popup/options UI. The logic can be structured so additional selection criteria can be added without rewriting the core automation. I would also handle state management, error recovery, clear status feedback and browser compatibility, while keeping the automation within the target site's supported behavior and avoiding attempts to bypass CAPTCHA, access controls or other anti-automation protections. Would you like me to build a working demo for you? I hope we discuss more about the project in chat. Thanks, Fernando Garcia
$250 CAD in 2 days
5.3
5.3

Hello, The biggest risk is timing and selector fragility: slot pages change DOM or rate-limit requests, causing missed picks or bans unless the extension uses resilient selectors, smart polling, and polite request pacing. I have built several browser extensions that interact with booking and registration pages for time-sensitive actions, including content scripts that detect UI changes, background scripts that manage polling and retries, and options pages for user-defined criteria. I implemented multiple-criteria matching engines (priority, earliest-available, location filters) and preference UIs so nontechnical users can define rules. My work used Chrome and Firefox extension APIs, local storage for rules, and optional server-side token refresh where needed. I prioritize clear error reporting and an audit log so users see why a slot was chosen. I will start by analyzing the target slot pages you want to support and implement a lightweight prototype content script that detects available slots and applies a criteria engine. The prototype will demonstrate stable selector strategies, backoff and retry logic, and a small UI for configuring multiple slot picking criteria. - Which specific USA slot sites or URLs should the extension support first? - Do users need browser-only automation, or is a companion server acceptable for queuing and rate control? Regards, Matthew Reese
$250 CAD in 3 days
4.8
4.8

Hello. Thank you very much for your chance. I have read your project description carefully. I'm a Web, AI & Android Custom | Python, WordPress, Java with over 8 years of experience working with JavaScript, Automation, API Integration. I understand you need a Chrome or Firefox extension that automates slot selection based on user-defined criteria, supporting multiple picking rules for USA-based users. The real challenge is the criteria logic under load. A common issue: the extension checks slots on a fast interval, so the page and the portal both slow down, and the extension misses the very slot it is watching for. I would build a configurable polling model with clear rules and state tracking. I can build it perfectly : First, confirm the target site, the slot criteria and how the extension should behave when a match is found. Then, build the extension with the criteria engine, the UI and the selection flow. Finally, test the matching logic and document how to adjust the rules. I should be upfront: I would only build this for a portal you own or are authorised to automate, since automating a third-party booking site against its terms is not something I can take on. Let's connect over a chat so we can discuss this in more detail. Best regards , Ankit
$450 CAD in 4 days
4.9
4.9

Hi, I've read your project description for the "USA Slot Picking Automation Extension" and I understand you're looking for a developer to create a browser extension that automates slot selection based on user-defined criteria for USA-based users. This sounds like a fascinating challenge, especially the need to handle complex logic for multiple criteria. My background as a full-stack developer with over 4 years of experience, focusing on Angular, Node.js, and MongoDB, has given me a solid foundation in building robust web applications and APIs. I'm particularly adept at crafting user-friendly interfaces and implementing intricate backend logic. For this project, I envision using JavaScript for the browser extension itself, leveraging my experience with client-side scripting to ensure smooth operation. On the backend, if any complex server-side processing or data management is required for the criteria, I can utilize Node.js and Express. My experience with custom eCommerce solutions and building APIs means I'm comfortable integrating various services and handling user-specific configurations. I'm confident I can deliver a reliable and efficient extension. To ensure I'm on the right track, could you clarify if there's any existing user interface design or wireframes you'd like me to follow for the extension's settings panel? I'm estimating a delivery time of 5-7 days for this project. Best regards, Roberto
$420 CAD in 7 days
5.0
5.0

Automating slot selection for USA users requires a keen understanding of both browser extension development and user experience. With my background in creating functional browser extensions, particularly for Chrome, I have successfully implemented similar automation projects that required complex logic and a user-friendly interface. To approach this, I would first outline user-defined criteria and develop an algorithm that dynamically selects slots based on those settings, ensuring flexibility for multiple criteria. My experience with UI/UX design will ensure that the extension is intuitive and accessible. It's crucial to consider how the extension will handle changes in slot options. A solution could involve implementing a real-time update feature. Could you clarify if there are specific criteria that users need to prioritize? I look forward to discussing how we can bring this project to fruition. Junaid
$450 CAD in 7 days
4.8
4.8

Chrome extensions for automated slot booking need tight timing since the target site's DOM changes fast and rate limits kick in. I would use content scripts with mutation observers plus a background worker to handle retries without tripping bot detection. Can start today, working version in 4 days. Budget and timeline here are starting points based on the post. Once we go over the target sites and edge cases, I will firm up both. Want me to send a quick plan?
$450 CAD in 7 days
4.5
4.5

I noticed your need for a USA slot picking automation extension and my recent work on a similar browser automation tool for e-commerce purchasing, which involved complex conditional logic for product selection, directly aligns with your requirements. I successfully built a Chrome extension that navigated user interfaces, identified specific elements based on dynamic criteria, and executed automated actions, all while maintaining a user-friendly experience. This project required robust handling of multiple, sometimes conflicting, selection rules, which I believe is a core challenge for your slot picking automation as well. My technical approach would involve developing a Chrome extension using JavaScript, HTML, and CSS. I would leverage libraries like Puppeteer (for robust DOM manipulation and interaction) or direct DOM querying for efficiency, depending on the target website's structure. The core logic for slot selection would be implemented as a configurable algorithm, allowing users to input and prioritize multiple criteria (e.g., time, specific slot characteristics, availability patterns). I'd focus on creating a clean, intuitive settings interface within the extension's popup or options page, ensuring ease of use for defining these complex rules. To ensure we're perfectly aligned, could you elaborate on the types of "user-defined criteria" you anticipate users needing to configure? Also, is there a specific set of websites or a particular type of slot-picking platform you're targeting, or will the extension need to be highly adaptable? I'm eager to discuss how my experience can deliver an effective and reliable solution for your automation needs.
$566 CAD in 21 days
4.5
4.5

Ludhiana, India
Payment method verified
Member since Sep 24, 2026
$5000-10000 AUD
£30-250 GBP
₹1500-12500 INR
₹37500-75000 INR
₹1500-12500 INR
$30-250 USD
$10-30 USD
$1500 USD
$250-750 AUD
₹1250-2500 INR / hour
₹400-750 INR / hour
₹750-1250 INR / hour
$250-750 USD
₹12500-37500 INR
$10-30 USD
$250-750 USD
$100 USD
$250-750 USD
₹37500-75000 INR
$5000-10000 USD