Senior Node.js Backend Engineer (Crypto / Low-Latency / Scraping)

Format: Remote / Full-time / Long-term
Location: Worldwide
Model: Fixed price per stage / project (no hourly, no salary)

📌 Responsibilities

• Build low-latency systems (<100ms) for crypto announcement monitoring
• Develop high-speed parsers for social media and exchanges
• Bypass Cloudflare / anti-bot protections at protocol level (not browser automation)
• Work with WebSocket, real-time streaming, async pipelines
• Design proxy infrastructure, anti-ban, rate-limit bypass systems
• Participate in development of trading bots and fintech tools

✅ Requirements

• Strong experience with Node.js (async/await, streams, clustering, workers)
• Proven experience building low-latency systems
• Real experience bypassing Cloudflare without Selenium/Playwright
• Deep understanding of event-driven architecture
• Experience with WebSocket / streaming APIs
• Knowledge of TCP/IP, TLS, handshakes, fingerprinting
• Background in crypto / fintech / scraping

⭐ Nice to Have

• Trading bots for announcements / Twitter
• Real cases with measured latency results
• Experience with Binance / OKX / Bybit APIs
• Reverse engineering / network debugging

📂 What We Expect

• CV
• Short description of relevant projects
• Demo / video / GitHub (if available)
• Answers to technical questions

💼 Work Model

• Long-term partnership
• Multiple parallel projects
• High autonomy