Web Request / Network Traffic Expert (Browser & HTTP Analysis)
3000 USDI am looking for a highly skilled developer who understands how to inspect, capture, and analyze web requests made by websites (HTTP/HTTPS), even when I do not own the site. The main goal is to identify and document all network calls a specific website makes (API calls, form submissions, headers, payloads, cookies, etc.) so that these requests can be understood and potentially replicated in a separate application or script (for legal, compliant use). Responsibilities Inspect and capture all network requests made by a target website using browser dev tools and/or proxy tools. Identify key API endpoints, request methods (GET/POST/etc.), headers, cookies, query params, and body payloads. Document request/response structures in a clear, developer-friendly format (e.g., JSON examples, parameter lists). Explain any authentication or session mechanisms used (tokens, cookies, headers, etc.). Provide guidance on how to reproduce these requests programmatically (e.g., using Node.js, Python, or similar). Ensure all work respects legal boundaries, public data access rules, and the website’s terms of service. Requirements Strong experience with browser developer tools (Chrome DevTools, Firefox Developer Tools, etc.). Solid understanding of HTTP/HTTPS, headers, cookies, sessions, and common web security mechanisms. Hands-on experience using traffic/proxy tools (e.g., Fiddler, Charles Proxy, Burp Suite, mitmproxy, etc.). Experience with at least one backend language for scripting requests (Node.js, Python, or similar). Ability to analyze obfuscated or minified frontend code to understand how requests are built. Clear written communication skills to document findings in detail. Nice to Have Experience with web scraping (respecting robots.txt / ToS and legal constraints). Experience with automation tools like Puppeteer / Playwright / Selenium. Familiarity with common API patterns (REST, GraphQL, JSON-based APIs).
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10 days3000 USD10 days3000 USD
Hello,
My name is Kirill, and I specialize in analyzing web traffic, reverse-engineering web requests, and documenting complex network interactions so they can be reliably reproduced in standalone scripts or applications (Node.js / Python / Puppeteer / Playwright).
I can fully capture, inspect, and document all HTTP/HTTPS requests made by the target website including API calls, headers, cookies, sessions, payloads, form submissions, and authentication mechanisms strictly within legal and allowed boundaries
Before we proceed, I need to clarify a few important details:
1.What is the exact website you want to analyze?
(Some sites use Cloudflare/Akamai/anti-bot layers that affect the scope.)
…
2.Do you need only traffic analysis and documentation, or also a working script that reproduces all key requests?
3.Does the workflow involve authentication?
login/password
OAuth
rotating tokens
This significantly impacts the approach.
4.Should I analyze only public endpoints, or also the requests made after logging into an account?
5.Which programming language do you prefer for request reproduction?
Node.js
Python
Both?
Is frontend code analysis required (React/Vue/Angular) to discover hidden endpoints or request-signing logic?
Ready to start immediately once I receive these details
After clarifying the scope, I will provide an accurate timeline and a fixed price
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12 days3000 USD
297 12 days3000 USDHello! I clearly understand the task: a deep analysis of web traffic is needed, interception and decryption of HTTP/HTTPS requests, detailed examination of APIs, cookies, headers, payloads, and sessions. I will implement a tool that not only inspects browser traffic but also transforms it into a clean architecture for documenting and recreating calls. I have experience with Charles Proxy, Burp Suite, mitmproxy, Puppeteer, Playwright, Fiddler, collecting traffic from Chrome DevTools, and automation through Node.js and Python. I am ready to get involved, outline the structure, analyze scenarios, and build a complete tool, including recommendations for reproduction and automation.
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1 day3000 USD
1257 34 0 1 day3000 USDHello. I have good skills in system administration and automation.
I can help you.
Please contact me via private messages.
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90 days12 000 USD
1003 2 0 90 days12 000 USDGood afternoon, I am ready to take this project for development, I have extensive experience of over 15 years in the development and support of websites and mobile applications.
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15 days3000 USD
172 1 1 15 days3000 USDGood day! I am ready to complete this project. Extensive experience in developing various applications.
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