Senior C++ Engineer - Market Data Platform

**Role Summary (Domain - Trading/Finance) :

Join us at the start of a green-field initiative : the design and build of a new ultra-low-latency Market Data platform that will drive our next generation of real-time services. You will work on components where every microsecond matters, integrate binary exchange protocols, and contribute to a high-performance system focused on low latency, correctness, and reliability.

You will work in a distributed, highly skilled engineering team across two locations, shaping a system built for speed, quality, and long-term maintainability.

**What You Will Do :

• Design and develop core components of the low-latency Market Data platform.

• Implement and optimize feed handlers over TCP and multicast UDP binary protocols.

• Work with feeds such as ITCH, SBE, FAST, FIX, and venue-specific formats.

• Work on L1, L2, and L3 order-book construction, conflation, correlation, consolidated tapes, and replay pipelines.

• Optimize performance by focusing on :

o CPU cache hierarchies and memory locality

o NUMA-aware design and predictable execution

o Data-structure layout and allocation-free paths

o Branch prediction, prefetching, TLB behavior

o NIC tuning and kernel network stack optimization

• Build and maintain high test coverage, including latency regression and deterministic behavior tests.

• Validate correctness and quality of Market Data flows end-to-end.

• Perform profiling and instrumentation using eBPF, perf events, and flame graphs.

• Analyze binary protocol dumps and low-level hexdump traces for debugging.

• Deploy, test, and validate software in QA and Production environments.

• Participate in on-call and incident support once the platform is in production.

• Contribute to documentation, knowledge sharing, and continuous improvement.

Must Have : C++, lock-free / Wait-free, orderbook, Market Data, Solarflare / Mellanox, Low Latency code

**What You Bring :
Experience :

• 8+ years of professional experience with modern C++ (C++14/17/20).

• 5+ years working directly in Market Data or trading low-latency systems.

Technical Skills

• Deep experience integrating exchange Market Data protocols : TCP, multicast UDP, ITCH, SBE, FAST, FIX.

• Experience with L1/L2/L3 order books, conflation, correlation, replay, and consolidated feeds.

• Mastery of modern C++ techniques including :

o advanced templates

o lock-free and wait-free structures

o concurrency and memory models

• Strong Linux expertise :

o CLI and low-level tooling (perf, strace, tcpdump, sar, iostat)

o understanding of system calls, CPU scheduling, memory management

• Understanding of modern CPU microarchitecture : cache hierarchies, NUMA, branch prediction, prefetching, TLB behavior.

• Experience with low-latency NICs (Solarflare, Mellanox), driver settings and tuning.

• Familiarity with kernel-bypass technologies (DPDK, Onload) or advanced NIC/driver tuning is a strong plus.

• Experience with low-overhead instrumentation and performance profiling (eBPF, perf events, flame graphs).

• Strong focus on reliability, defensive coding, and graceful failure handling.

• Ability to analyze binary protocol dumps and low-level hexdump traces.

• Strong hands-on experience with Python / Go (mandatory).

• Experience with Git/GitLab, Linux shell scripting, CI/CD.

• Knowledge of Ansible is a plus.

• Clear communication skills and ability to work in a distributed team.

**Nice to Have :

• Understanding of hardware timestamps, PTP, and time-synchronization pipelines.

• Experience with Elastic, Grafana, Prometheus.

**Why Join Us?

• Build a Market Data platform from the ground up.

• Real low-latency engineering : microseconds matter.

• High impact on real-time products used by demanding clients.

• Strong engineering culture and modern tooling.

• Work across two locations as one unified team.