Network Fingerprinting Evasion Expert (JA3/JA4, TLS, HTTP, TCP/IP)

We’re looking for a highly skilled network protocol and traffic fingerprinting expert to help us bypass JA3/JA4 detection methods across various layers (TCP/IP, TLS, HTTP). This is a specialized consulting role for someone deeply familiar with passive fingerprinting techniques and how to defeat them. ???? What You’ll Do: Analyze our current fingerprint (JA3, JA4L, JA4H, JA4X) and propose hardening techniques. Implement TLS stack spoofing using uTLS, OpenSSL, or other libraries. Tune HTTP header order/casing to evade JA4H fingerprints. Modify TCP/IP-level behavior to avoid JA4X detection (window size, MSS, options). Build or configure proxy relays/middleboxes that rewrite TLS handshakes. Simulate or route traffic through real browser environments (headful or mobile). Optionally: Implement stealth automation using Playwright or Puppeteer + stealth techniques. ✅ Skills & Requirements: Proven experience defeating JA3/JA4 or similar detection methods. Deep knowledge of TLS handshakes, cipher suites, extensions. Familiar with TCP/IP fingerprinting techniques. Experience with Go (uTLS), Python (mitmproxy, scapy), or C/OpenSSL. Familiarity with fingerprinting datasets (e.g. fingerprintjs, Splunk JA4 datasets). Bonus: Familiarity with anti-bot detection systems (Cloudflare, Akamai, DataDome, etc.). ???? Tools You Might Use: uTLS (Go) mitmproxy Tcpreplay / Scapy curl + custom OpenSSL ???? Project Scope: We are building an application that needs to blend in with normal consumer traffic to avoid detection or fingerprinting. This is not for malicious purposes — it is for ensuring traffic privacy and obfuscation under surveillance-heavy conditions. ???? Engagement: Initial contract with potential for longer-term collaboration. Flexible hours, async-first communication. We can move fast if you’re available immediately. ???? Apply If You: Have bypassed or neutralized fingerprinting systems in production. Understand the internals of TLS and HTTP at the protocol level. Think like a network defender — and know how to stay a step ahead.