Market Data Real-Time Developer

Millennium; Hong Kong; On-site; HKD 800,000 - 1,200,000; Full time

Job summary

Millennium is a global investment firm seeking a senior Market Data Engineer to join our IT team in managing real-time data feeds. You will develop and optimize low-latency C++ components that connect to brokers, exchanges, and other venues.

The role requires deep knowledge of Linux, OS tuning, and networking, plus experience with large-scale data analysis and Python scripting. You will work closely with Portfolio Managers to ensure robust, scalable data infrastructure across trading platforms.

Qualifications

• 5+ years in financial markets technology.
• Expert in low-latency, multi-threaded C++ development.
• Strong Linux and OS/network tuning capabilities.
• Experience with large-scale data analysis and Python.
• Familiarity with Asian market data feeds.

Responsibilities

• Develop real-time market data components that connect to brokers and exchanges.
• Build systems for the full data workflow across data services.
• Integrate market data with trading infrastructure, including pre-trade risk checks.
• Engineer low-latency, high-performance multi-threaded applications in C++.
• Analyze large data sets to troubleshoot and improve performance.
• Tune OS and network settings on Windows and Linux.
• Interpret exchange specs to implement connectivity solutions.
• Collaborate with IT teams, developers, and Portfolio Managers.

Skills

Advanced C++ development

Linux proficiency

Python scripting

Market data knowledge

Communication skills

Asian market data familiarity

Tools

Linux OS

Windows OS

Network tuning tools

Job description

About Millennium

Millennium is a global, diversified alternative investment firm, founded in 1989. Defined by evolution, innovation and focus, Millennium's mission is to deliver results for our investors.

About Millennium

Millennium is a global, diversified alternative investment firm, founded in 1989. Defined by evolution, innovation and focus, Millennium's mission is to deliver results for our investors. Our people are empowered with both independence and support: the autonomy to pursue ideas with conviction and the backing of a global network committed to collaboration, disciplined risk management and continuous learning. With opportunities to deepen expertise and accelerate development, talent at Millennium is equipped to adapt, evolve and build lasting impact over time. Discover how transformative growth accelerates impact.

Meet the Team

Core to the health and growth of our business, Millennium's Information Technology organization develops the flexible, scalable technology and advanced proprietary systems that support the firm's active, multi-manager platform. Within this environment, the Market Data Engineering team owns the full market data workflow across design, delivery and operational support, supporting a broad range of data services spanning low-latency and file-based solutions.

What You'll Do

• Develop real-time market data components that connect to brokers, exchanges, and other electronic trading venues
• Build and enhance systems that support the full data workflow, including design, delivery, and operational support across multiple data services
• Integrate market data solutions with related trading infrastructure, including pre-trade risk checking systems
• Engineer low-latency, high-performance, multi-threaded applications in C++ for production trading environments
• Analyze large data sets to troubleshoot issues, improve performance, and support platform reliability
• Tune applications and underlying OS and network settings across Windows and Linux environments to optimize performance
• Interpret exchange specifications and protocol definitions to implement and support connectivity solutions
• Partner closely with IT teams, developers, and Portfolio Managers to deliver robust market data capabilities

What You Bring

• 5+ years of professional experience in financial markets technology, ideally within a financial institution or financial services environment
• Advanced C++ development skills, with strong experience building low-latency, multi-threaded, high-performance systems
• Strong Linux programming experience, with hands-on knowledge of Windows and Linux at the OS and network tuning level
• Experience with kernel bypass optimization and performance on Linux platforms
• Proficiency in large-scale data analysis and advanced scripting, preferably in Python
• Strong understanding of trading asset classes such as equities, futures, and FX
• Deep familiarity with Asian market data feeds and market data platforms, including exchange raw feeds and third-party direct feeds
• Working knowledge of networking and connectivity concepts, including multicast, routing, and TCP/IP, along with strong written and verbal communication skills