Quant jobs / Millennium

Senior C++ Engineer – High Frequency Trading

A senior low-latency developer role on Millennium's SPEED platform team, which runs order entry and market data for systematic and high-frequency trading. The post also carries regional technical leadership for APAC.

What you’d work on

Our reading of the posting: what a new hire in this role would most likely spend their first months on.

Build and tune order-entry, market-data and exchange-simulator components
Develop feature extraction and strategy container services
Take part in an L2 production support rotation for latency-critical systems
Create onboarding tools so new trading teams can use the platform
Set performance standards and mentor engineers in the region

What they ask for

Required

C++ and Python for low-latency production systems
Linux internals and CPU architecture (caches, NUMA)
Performance profiling
Low-latency networking: multicast, TCP/UDP, kernel bypass
Understanding of the HFT research pipeline
HPC grid experience
Technical leadership

Preferred

Cloud experience (AWS, GCP)
Custom NIC or FPGA stacks

Education: No degree level stated
Experience: 5+ years with a well-regarded HFT group delivering production low-latency systems
Languages and tools: C++
Python
Markets: equities

How to prepare

Write a small C++ market-data handler and measure its latency with a profiler
Study cache behaviour, NUMA and branch prediction on real code
Read up on kernel-bypass networking and multicast feeds
Build a simple limit order book simulator and replay recorded data through it

What to study

The HFT Quant Developer roadmap sets out the stages for this kind of role, with free resources for each.

Open the roadmap

Apply

Read the full posting on Millennium’s site before applying: requirements, location and pay can change after we check them.

View the posting on Millennium’s site ↗

SelfMadeQuant wrote this summary from the employer’s public posting, last checked 6 November 2026. SelfMadeQuant isn’t affiliated with Millennium and doesn’t handle applications.