Budget: 1600 USD Deadline: 30 days

Hi there,

I like the thorough and organized project description.

This assignment really interests me. I've worked with Golang, uTLS, and creating unique HTTPS request tools that mimic browser-like TLS fingerprints and header structures while getting over complex anti-bot defenses like Cloudflare and Akamai.
I can confidently provide based on your requirements:

TLS fingerprint spoofing with uTLS (with rotating profiles for Chrome, Firefox, and Safari)

Support for HTTP and SOCKS5 proxies with retry logic and auto-rotation

Identification of anti-bot challenges (403, CAPTCHA indicators, redirects)

mimicked cookie management, ALPN, and HTTP/2 headers in browsers

Hashing and recording of JA3 fingerprints (optional toggle)

Randomization in behavior and adjustable delays

Clear CLI interface with usage documentation

No need for headless browsers—a lightweight, completely covert Go solution

Tools/Stack: Go 1.21+, uTLS, net/http, golang.org/x/net/http2, optional: chromedp header mimic database Expand

Budget: 1200 USD Deadline: 30 days

Good afternoon.

Your requirements fully describe the creation of a professional tool for “low-level” web scraping. You are absolutely right in all points: TLS-fingerprint spoofing (via uTLS), consistency with HTTP headers, proxy rotation, HTTP/2 support and cookie handling are mandatory elements.

However, I want to draw your attention to a key aspect that determines 90% of the success or failure of such projects today.

Modern defenses (Cloudflare, Akamai, PerimeterX), especially on highly competitive sites like viagogo and stubhub, have long gone beyond just analyzing JA3 and HTTP headers. This is just the first, basic line of defense.

Your “Avoid headless browsers” requirement is the hardest part of the challenge. It means that to bypass the defenses, you have to not just mimic the browser, but reverse-engineer their JS Challenges and implement their logic in pure Go. This is extremely complex, time consuming and not always possible, requiring constant updates as anti-bot systems change their scripts.

As for the $1000 budget, I have to be completely honest with you. Building a tool that is 100% tailored to your requirements and guaranteed to work with goals like Viagogo is a full-blown R&D project. Its cost is measured in thousands (and sometimes tens of thousands) of dollars and months of work by a highly skilled cybersecurity and reverse engineering specialist.

I see that you are aiming for a serious result, and I want to offer you a realistic way to achieve this goal. Instead of promising the impossible, I propose to create a powerful and extensible foundation (framework) for the given budget, on which you can build site-specific solutions in the future.

It's important to understand: this MVP will likely not be able to successfully fulfill requests to targets like Viagogo/Stubhub, as it won't solve their JS Challenges. However, you will get a solid, high-quality foundation that passes the first test (TLS/HTTP) and that can be further developed.

My approach is not to promise a golden mountain, but to offer you real, measurable results for your budget. You will get a quality tool that is a necessary first step to solve your core problem.

If you are ready to start by building a solid foundation on which to attack complex targets, I will be happy to cooperate.

Regards,
Bogdan. Expand

Budget: 1000 USD Deadline: 14 days

Hi, I am experienced hacker and Go developer. Let’s discuss the details

Budget: 1000 USD Deadline: 15 days

Good day, I have reviewed the technical assignment and am ready to start, I will complete it in 10 days, I indicate 15 so as not to make unnecessary promises