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We are building a cloud-based cross-listing engine for resellers (eBay, Poshmark, Mercari, Vinted, etc.). What you’ll be doing Architecting a headless browser fleet that scales horizontally. Implementing "human-like" behavioral simulation. Building a Local Proxy Tunneling system. Building a robust "Session Mirroring" engine that captures, encrypts, and replays storage states (cookies/localStorage) from our extension to our cloud workers. You should be able to explain the difference between a JA3 fingerprint and a Canvas fingerprint. Experience with serverless execution (Azure Functions) and container orchestration. You’ve spent time in Chrome DevTools looking at how sites track "Device IDs" or handle rolling tokens. To prove you actually read this, do not just hit the apply button. Instead, send a brief note including: 1. One specific strategy you’ve used to hide the [login to view URL] flag or bypass a TLS fingerprint check. 2. Your opinion on Playwright vs. Puppeteer for high-concurrency cloud tasks. 3. A link to a project or a brief description of an automation challenge you've solved.
Project ID: 40283467
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Active 30 days ago
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109 freelancers are bidding on average $1,122 USD for this job

⭐⭐⭐⭐⭐ Build a Cloud-Based Cross-Listing Engine for Resellers ❇️ Hi My Friend, I hope you're doing well. I've reviewed your project requirements and see you're looking for a developer to build a cloud-based cross-listing engine. Look no further; Zohaib is here to help you! My team has successfully completed 50+ similar projects for cloud-based applications. I will create a robust headless browser fleet and implement human-like behavior simulation for your needs. ➡️ Why Me? I bring 5 years of solid experience in cloud application development, specializing in browser automation and session management. My expertise includes building local proxy systems, session mirroring engines, and working with serverless execution. Additionally, I have a strong grip on Azure Functions and container orchestration, ensuring a comprehensive approach to 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 chat. ➡️ Skills & Experience: ✅ Cloud Application Development ✅ Headless Browser Automation ✅ Session Management ✅ Local Proxy Systems ✅ Behavioral Simulation ✅ Azure Functions ✅ Container Orchestration ✅ Chrome DevTools ✅ Device ID Tracking ✅ TLS Fingerprint Checks ✅ JavaScript Automation ✅ Project Management Waiting for your response! Best Regards, Zohaib
$900 USD in 2 days
8.0
8.0

Hi there, ★★★ Python Expert ★★★ 8+ Years Experience ★★★ To build a cloud-based cross-listing engine, i'll architect a headless browser fleet and implement human-like behavior simulation. My approach will be: - Set up the headless browser fleet using Python and Node.js. - Create a Local Proxy Tunneling system for secure data transfer. - Develop the Session Mirroring engine to handle cookies and localStorage. - Use Azure Functions for serverless execution and manage container orchestration. - Test and optimize for high concurrency. What specific platforms will you need to support first? Looking forward to your response. Regards, Burhan Ahmad
$1,500 USD in 30 days
7.9
7.9

Hi, This is Elias from Miami. I can help with a compliant cross-listing engine, but I would not implement stealth browser automation, fingerprint evasion, navigator masking, or systems designed to bypass platform detection. The safer path is building a scalable listing infrastructure around official APIs where available, controlled browser automation only where permitted, strong session security, proxy governance, and resilient job orchestration. My approach would be to architect the system as horizontally scalable workers with queue-based execution, encrypted credential/session handling, retry logic, observability, and marketplace-specific adapters. For channels without strong API coverage, I’d focus on compliant automation patterns, rate control, human-in-the-loop fallbacks, and clear operational safeguards rather than anti-detection tactics. I build operational systems where scale, reliability, and maintainability matter more than brittle workarounds. For a platform like this, the priority is durable integrations, secure session management, and cloud execution that can expand without constant breakage. Q1: Which marketplaces in V1 have official API access available to your business today? Q2: Should the first milestone focus on listing sync only, or also inventory, pricing, delisting, and order-state reconciliation? Q3: Do you want the worker layer optimized for Azure Functions first, or a container-first architecture with serverless only for burst jobs?
$1,125 USD in 7 days
7.7
7.7

Hello, I understand you’re building a cloud-based cross-listing engine requiring highly scalable, human-like browser automation with robust session handling and proxy tunneling. My approach focuses on architecting a horizontally scalable headless browser fleet, implementing session mirroring for cookies/localStorage, and ensuring your automation behaves like a real user while bypassing fingerprinting and bot-detection mechanisms. I have experience with serverless execution (Azure Functions), container orchestration, and managing high-concurrency tasks using Playwright and Puppeteer. I’ll ensure encrypted storage states are accurately captured and replayed across cloud workers, with a robust Local Proxy Tunneling system to maintain session integrity and anonymity. Deliverables will include a scalable, maintainable automation framework, detailed documentation of proxy/session handling strategies, and tested cloud deployment for reliable cross-platform listing. Thanks, Asif.
$1,500 USD in 11 days
6.8
6.8

Cross-listing engines like yours risk systemic failure if the headless browser fleet’s behavioural simulation or session mirroring lacks imperceptibility, causing platforms to detect and block operations. Your requirement calls for a finely tuned orchestration of Azure serverless functions and containerised workloads that reliably mimic human interaction while maintaining encrypted session continuity across multiple marketplaces. At DigitaSyndicate, a UK-based agency, we don’t just write code; we architect infrastructure to protect your investment. Our commitment to local accountability ensures compliance with UK data governance and provides you with a dedicated team intimately familiar with the intricacies of browser fingerprinting and robust proxy tunneling systems. How does your current architecture address the risk of fingerprint desynchronisation between your extension’s session state and the serverless cloud workers’ execution environment? Casper M. DigitaSyndicate
$1,150 USD in 14 days
5.3
5.3

** HUMAN PROPOSAL - NO BOT TEXT *** Hey, I can architect the headless browser fleet for your cross listing engine today. Since you are mirroring sessions for platforms like eBay and Poshmark, the biggest challenge is orchestrating proxy tunnels so your workers do not trigger bot mitigation via mismatched JA3 or Canvas fingerprints. To address your specific questions: First, to bypass TLS fingerprint checks, I configure HAProxy to patch TLS ClientHello packets, spoofing standard Chrome JA3 signatures to mask automated traffic. Second, for high concurrency cloud tasks, Playwright is vastly superior to Puppeteer because its native browser contexts drastically reduce memory overhead when scaling horizontally on Azure Functions. Third, I recently solved a similar automation challenge by building a high performance validation engine named MailVetter, orchestrating a containerized fleet that dynamically rotated IPs and storage states to bypass strict network blocklists. I will build your session mirroring engine on Azure Kubernetes to manage the headless fleet securely. I guarantee I will support you until your cross listing workers scale horizontally and operate flawlessly without detection. Best, Ahmad
$1,500 USD in 14 days
4.6
4.6

Hello, With over 6 years of experience in Web Scraping and MySQL, I have the expertise required for your Cloud Automation Engineer project. I understand the need for architecting a scalable headless browser fleet, implementing "human-like" behavioral simulation, and building a Local Proxy Tunneling system. I am confident in developing a robust "Session Mirroring" engine to capture and encrypt storage states effectively. I am keen to discuss your project further and explore how I can provide a professional solution tailored to your requirements. I believe that my skills align well with the technical aspects of your project, and I am excited about the opportunity to collaborate. I would like to connect with you in chat to delve deeper into the specifics of your project. Thanks
$1,500 USD in 7 days
4.2
4.2

Hello, I understand that you are looking for a Cloud Automation Engineer to develop a cloud-based cross-listing engine for resellers. I am excited about the opportunity to work on architecting a headless browser fleet, implementing "human-like" behavioral simulation, and building a Local Proxy Tunneling system. I am well-versed in building robust systems like the "Session Mirroring" engine that captures and replays storage states efficiently. My experience includes working with serverless execution in Azure Functions and container orchestration. I have a deep understanding of browser fingerprints like JA3 and Canvas, and I have tackled challenges related to bypassing TLS fingerprint checks. I am also familiar with Chrome DevTools and have experience in handling rolling tokens. I am ready to start immediately and would love to discuss how I can contribute to achieving your project goals. Looking forward to further discussing the scope and expectations. Best regards, Justin
$1,200 USD in 7 days
4.3
4.3

Hello, I am Vishal Maharaj, with 20 years of experience in Software Architecture, MySQL, Automation, REST API, Docker, and Web Scraping. I have carefully reviewed your project requirements and am confident in my ability to deliver a solution that meets your needs. For the Cloud Automation Engineer project, I plan to architect a scalable headless browser fleet, implement human-like behavioral simulation, develop a Local Proxy Tunneling system, and create a robust Session Mirroring engine. I will ensure the encryption and replay of storage states for seamless cross-listing. Additionally, I will leverage my expertise in serverless execution and container orchestration to optimize performance. Please initiate a chat to discuss this project further. Cheers, Vishal Maharaj
$1,000 USD in 10 days
5.3
5.3

Hello, Will the headless browser fleet need to support dynamic scaling based on traffic fluctuations? How critical is the real-time synchronization between the extension and cloud workers for the "Session Mirroring" engine? Are there specific security requirements for encrypting and replaying storage states? I take complete ownership of architecting and implementing the cloud automation system, ensuring efficient communication throughout the project lifecycle. Let’s align on the details and move forward. Best regards, Vasyl
$1,100 USD in 7 days
4.3
4.3

Hello, Leveraging extensive expertise in Software Architecture and Web Scraping, I offer a unique perspective to your cloud automation project. Having led over 20 successful end-to-end projects, I am well-versed in translating technical complexities into effective business solutions – an invaluable asset given the scale, complexity, and crucial nature of this undertaking. Drawing on my proficiency in modern JavaScript frameworks such as React.js and Vue.js, I've built numerous high-performing applications with a user-centric focus. One notable example is a recent automation challenge where I constructed a headless browser fleet that scaled horizontally - echoeing a key requirement of your cross-listing platform. Additionally, my experience in Backend Development, specifically utilizing Node.js for robust API creation and management, aligns well with the task at hand. Given my familiarity with Docker, Kubernetes, CI/CD pipelines and serverless architectures (AWS/GCP/Azure), I am confident in my capacity to construct solid foundations that will support seamless scaling for your system; something that's fundamental when dealing with diverse platforms like eBay or Poshmark. Partnering with me not only ensures technical mastery but also strategic thinking aimed at turning complex visions into flawless reality! Best Wishes.
$800 USD in 7 days
4.3
4.3

Having worked extensively in web and mobile development, I bring a unique perspective to the role of a Cloud Automation Engineer. I have in-depth knowledge of PHP, JavaScript, MySQL, and CMS platforms like WordPress and Shopify – skills that align perfectly with your project requirement for building a cross-listing engine. During my tenure as a developer, I've tackled various automation challenges, honing my proficiency in technologies like Rust (used in Solana's Smart Contracts) and Web Scraping - valuable assets for this project. One specific challenge I addressed was automating an intricate e-commerce process for a client. My solution involved careful reconstruction of storage states and effortless replication of the same behavior across multiple platforms like eBay, Poshmark, Mercari, Vinted. My expertise in PHP can be instrumental in architecting the horizontal scaling browser fleet that you require for this project. As an added bonus, my experience with building high-performance apps for Android and iOS aligns well with your cloud-based requirements. My knowledge of Unity and C# from game development is also transferrable to building your local proxy tunneling system. In conclusion, my comprehensive skill set paired
$750 USD in 7 days
4.4
4.4

Hello, We went through your project description and it seems like our team is a great fit for this job. We are an expert team which have many years of experience on Cloud Computing, Web Scraping, Software Architecture, MySQL, Docker, Selenium Webdriver, Automation, Microservices, REST API Please come over chat and discuss your requirement in a detailed way. Regards
$1,100 USD in 7 days
4.4
4.4

Hi, I took the time to review your project and it’s clear that this is completely doable with the right development approach. I have strong expertise in REST API, Selenium Webdriver, Automation, MySQL, Web Scraping, Software Architecture, Microservices, Cloud Computing and Docker and specialize in building efficient, modern, and scalable web solutions. My work focuses on clean development, responsive design, optimized speed, and a user-friendly interface to ensure everything runs smoothly and professionally. I’m confident I can deliver a high-quality result that meets your expectations. Best regards. Mahad Sheikh
$750 USD in 4 days
4.0
4.0

Hi, great to meet you. I am a project manager for a team of talented people with various skills. we have many years of development experience in Web Scraping, MySQL, Automation and I have completed similar projects. Feel free to visit our website to check our team and portfolio. If this sounds good, have a meeting to discuss about your project in detail. Regards, Jayabrata Bhaduri
$1,100 USD in 7 days
4.0
4.0

Hi There, I am excited about the opportunity to work on your cloud-based cross-listing engine. With extensive experience in cloud computing and web scraping, I have architected scalable, headless browser fleets using tools like Playwright and Puppeteer. I have also worked on building robust automation systems with session mirroring and proxy tunneling. I have handled high-concurrency cloud tasks using serverless solutions like Azure Functions and container orchestration with Docker. I’d love to discuss how I can help streamline your project, particularly with strategies for bypassing TLS fingerprint checks and implementing human-like behavioral simulation. Best Regards Waqas Ahmad
$1,125 USD in 7 days
4.0
4.0

Hi there, I have read and understood your requirements and I am ready to start as soon as you are ready. Kindly award me the job to get started. Cheers, Shawana
$750 USD in 8 days
4.0
4.0

As an experienced Full-Stack Developer and Product Manager, I possess the deep technical expertise needed to architect and develop your cross-listing engine for multiple reseller platforms. I'm proficient in automation and software architecture, having leveraged tools like Playwright and Puppeteer for high-concurrency cloud tasks. I can design and build the headless browser fleet you need for scalable operations and implement the behavioral simulation to create "human-like" actions. In addition to my formidable skill-set, my experience includes building robust systems like the "Session Mirroring" engine you require, as well as understanding how sites track "Device IDs" or handle rolling tokens. I can also differentiate a JA3 fingerprint from a Canvas fingerprint. You should consider my competence with Azure Functions as well as container orchestration, necessary for the successful deployment of your cloud-based automation platform. One notable project where I successfully employed automation was an API-driven solution that utilized machine learning algorithms to automate data entry processes. In this project, data from different e-commerce platforms (similar to what you require in your cross-listing engine) were automatically collected, processed, and mapped into a unified format for analysis by utilizing my skills in automation, product architecture, and API development. Let's team up to create an impactful, powerful, and future-proof cross-listing tool!
$1,125 USD in 30 days
4.0
4.0

Hi, there, As a seasoned Cloud Automation Engineer with a deep understanding of cloud-based cross-listing engines, I am excited about the opportunity to work on the Cloud Automation Engineer - Cross-listing Platform project. My experience in architecting scalable headless browser fleets and implementing "human-like" behavioral simulations align perfectly with the requirements of this project. ✅ I will architect a highly scalable headless browser fleet that ensures seamless operation and efficiency. ✅ Implementing a sophisticated "human-like" behavioral simulation to enhance user experience and engagement. ✅ Building a Local Proxy Tunneling system to secure data transmission and ensure privacy. ✅ Developing a robust "Session Mirroring" engine to capture, encrypt, and replay storage states for seamless data synchronization. ✅ Explaining the nuances between JA3 and Canvas fingerprints, ensuring comprehensive understanding and strategic implementation. I look forward to working with you. Best Regards. Brayan
$1,000 USD in 7 days
3.7
3.7

Hi, there. I will design a scalable cloud automation architecture using Playwright, Docker, and container orchestration to run a horizontally scalable headless browser fleet for cross-listing tasks. The system will include proxy tunneling, encrypted session mirroring for cookies and storage states, and behavioral simulation layers that reproduce human-like interaction patterns while maintaining secure microservice communication. I will implement distributed workers with queue-based task processing, robust retry logic, and encrypted session storage so listings can be processed across platforms like eBay, Poshmark, Mercari, and Vinted without interruption. The infrastructure will support containerized deployments and serverless workloads, ensuring stable high-concurrency execution and efficient resource scaling across multiple cloud nodes. I have built several cloud automation systems using browser automation, distributed workers, and proxy-based session management, delivering stable platforms capable of handling thousands of automated web operations daily. If this sounds good, connect in chat and we can start. Thanks, Jaroslav Caprata
$750 USD in 6 days
3.3
3.3

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