QUANTITATIVE DEVELOPER (CRYPTO HFT / MARKET MAKING)

39k Group is a high-frequency trading firm operating globally across centralized crypto exchanges. We specialize in ultra-low-latency strategies and market making, scaling infrastructure to handle billions of events daily with microsecond-level performance.

ROLE :
- Design, build, and operate ultra-low-latency automated trading systems for crypto market making and cross-exchange hedging. The core mandate is tick-to-trade latency optimization - from a market-data frame arriving on the socket to an order leaving the wire - in mission-critical, latency-sensitive codebases.

CORE RESPONSIBILITIES :
- Design and maintain high-performance, high-throughput trading systems in Rust and C++, built to process massive market-data volumes with consistent, predictable performance under load.
- Apply metal-level performance engineering : custom allocators, lock-free and wait-free concurrency, zero-copy parsing, cache- and branch-aware data structures, aggressive compiler tuning (LTO, target-CPU/instruction-set tuning),



and elimination of per-tick/per-order allocations on the hot path.
- Architect concurrency and runtime/threading models that isolate hot trading loops from background work to avoid tail stalls, scaling cleanly across available hardware.
- Build exchange connectivity and market-data feed handlers across heterogeneous transports and protocols : TCP/UDP sockets, WebSocket, FIX, and SBE binary decoders; HMAC-authenticated sessions, robust reconnect/dedup logic, and venue-specific edge cases.
- Implement market-making and order-book imbalance strategies across many instruments concurrently, plus cross-exchange hedging engines for real-time inventory and risk offset.
- Build and maintain a low-latency Order Management System (OMS) - order placement, modification, and cancellation, lifecycle and state tracking, ack/fill handling, rate limiting, and reliable in-flight order accounting under high message rates.
- Write cl

📌 Quantitative Developer (Gurugram)
🏢 39k Group
📍 Gurugram