Rust Lead Senior Developer (Remote)

🌍 Remote (Asia–Europe overlap) 📄 Contractor, full-time 💰 Monthly base + quarterly profit-sharing 👤 Reports to CTO/Co-Founder 👥 ~8-person team 🌏 About anyIP anyIP.io is a fast-growing proxy provider — affordable, high-quality residential and mobile proxies in 190+ countries. Built by engineers, loved by power users. We're an AI-first company : we lean on AI across the whole stack — coding, reviews, debugging, ops, and tooling — to ship faster and punch far above our size.

You'll be expected (and encouraged) to wield it daily. 🔥

Be the technical owner of our proxy platform: a 100% async Rust codebase (~50k lines, multi-repo) doing tens of millions of requests/day . The core is a hard distributed-systems problem — we coordinate a churning fleet of devices running our server as proxy and route live customer traffic through them over custom TLS + custom protocols. Your job: keep that fleet fast, reliable, and byte-accurately billed.

This is a hands-on lead role. You'll mostly design, code, review, and debug production systems — not manage a large team. 🛠️ What you'll own 📡 Peer-fleet coordination & reliability — lifecycle, keep-alive, health checks, circuit breakers, zombie-peer detection, QoS-aware archiving 🔌 Core protocol work — proxy, SOCKS5, UDP, QUIC, and load balancing under real traffic 💵 Usage-metering correctness — every byte billed once across HTTP/CONNECT/SOCKS5 TCP+UDP and client aborts, verified by E2E tests 🛡️ Security & abuse prevention — domain/SSRF/rate-