Senior C++ Low Latency Engineer – Chennai

Job Description

Job Title: Senior C++ Low Latency Engineer
Location: Remote Experience Level: 8+ years
Department: Market Data / Technology
Employment Type: Full-time

Role Summary
Join us at the start of a green-field initiative to design and build a next-generation ultra-low-latency Market Data platform that will power our real-time services. You will work on systems where every microsecond matters, integrating binary exchange protocols and delivering software engineered for speed, correctness, and reliability.

You will collaborate within a highly skilled, distributed engineering team across two locations, shaping a platform built for performance, quality, and long-term maintainability.

• What You Will Do
  • Design and develop core components of a low-latency Market Data platform.
  • Implement and optimize market data feed handlers using TCP and multicast UDP binary protocols.
  • Integrate and maintain feeds such as ITCH, SBE, FAST, FIX, and venue-specific formats.
  • Build and maintain L1, L2, and L3 order books, including conflation, correlation, consolidated tapes, and replay pipelines.
• Drive performance optimization with deep focus on: CPU cache hierarchies and memory locality.
• NUMA-aware design and predictable execution.
• Data-structure layout and allocation-free paths.
• Branch prediction, prefetching, and TLB behavior.
• NIC tuning and kernel network stack optimization
• Build and maintain high test coverage, including latency regression and deterministic behaviour tests.
• Validate end-to-end correctness and quality of Market Data flows.
• Perform profiling and instrumentation using eBPF, perf events, and flame graphs.
• Analyze binary protocol dumps and low-level hexdump traces to diagnose issues.
• Deploy, test, and validate software in QA and Production environments.
• Participate in on-call rotation and incident support once the platform is live.