Market Data Engineer

Millennium Management; Greater London; On-site; GBP 36,000 - 76,000; Full time

Job summary

Millennium is seeking a skilled Market Data Systems Engineer in Greater London to support and evolve real-time market data infrastructure across global teams. You will work with portfolio managers, trading desks, and core technology to ensure low-latency, reliable data delivery.

The role requires hands-on SRE expertise, strong Linux networking knowledge, and a degree in computer science or related field. Bloomberg/Thomson Reuters experience is a plus.

Qualifications

• Experience supporting market data environments within a global organization.
• Strong understanding of market data concepts, including data models, messaging protocols, order book structures, recovery, and reliability mechanisms
• Technical background in developing and supporting complex market data systems, including platforms such as Bloomberg and Thomson Reuters
• Hands-on site reliability engineering or operational expertise, including system administration, automation, measurement, and release or deployment management
• Experience with monitoring, metrics, and command-and-control capabilities for distributed market data platforms, with the ability to assess current solutions and drive improvements
• Degree in Computer Science or a related field, with strong object-oriented programming or scripting experience
• Solid understanding of Linux internals, networking, and CPU architecture, with the ability to apply that knowledge to high-performance systems
• Strong prioritization, communication, relationship management, and ownership skills, with a detail-oriented approach in fast-moving, high-pressure environments

Responsibilities

• Support and manage both enterprise and latency-sensitive real-time market data environments, including internal, vendor, and exchange-driven changes
• Partner with Portfolio Managers, trading desks, and core technology teams to support users of the market data platform and address evolving business needs
• Help shape the teams technical direction by driving platform enhancements and new engineering initiatives
• Collaborate with hardware and software engineering teams across the firm to build real-time market data processing and distribution systems
• Optimize platform performance through network and systems programming techniques designed to reduce latency and improve reliability
• Design and build tools that automate support and platform management, including monitoring, real-time and historical metrics, visualization, and self-service administrative capabilities
• Strengthen operational processes and workflows across release management, incident response, remediation, exchange notification handling, and SLA enforcement
• Contribute to the stability and evolution of the global market data plant across both low-latency and non-latency-sensitive environments

Skills

Market data concepts

SRE/operational

Programming / scripting

Monitoring & metrics

Communication & ownership

Education

Degree in Computer Science or related field

Tools

Bloomberg

Thomson Reuters

Job description

Salary: £36,000 - 76,000 per year

Requirements:

• Experience supporting market data environments within a global organization, including internally developed feed handlers and distribution infrastructure
• Strong understanding of market data concepts, including data models, messaging protocols, order book structures, recovery, and reliability mechanisms
• Technical background in developing and supporting complex market data systems, including platforms such as Bloomberg and Thomson Reuters
• Hands-on site reliability engineering or operational expertise, including system administration, automation, measurement, and release or deployment management
• Experience with monitoring, metrics, and command-and-control capabilities for distributed market data platforms, with the ability to assess current solutions and drive improvements
• Degree in Computer Science or a related field, with strong object-oriented programming or scripting experience
• Solid understanding of Linux internals, networking, and CPU architecture, with the ability to apply that knowledge to high-performance systems
• Strong prioritization, communication, relationship management, and ownership skills, with a detail-oriented approach in fast-moving, high-pressure environments

Responsibilities:

• Support and manage both enterprise and latency-sensitive real-time market data environments, including internal, vendor, and exchange-driven changes
• Partner with Portfolio Managers, trading desks, and core technology teams to support users of the market data platform and address evolving business needs
• Help shape the teams technical direction by driving platform enhancements and new engineering initiatives
• Collaborate with hardware and software engineering teams across the firm to build real-time market data processing and distribution systems
• Optimize platform performance through network and systems programming techniques designed to reduce latency and improve reliability
• Design and build tools that automate support and platform management, including monitoring, real-time and historical metrics, visualization, and self-service administrative capabilities
• Strengthen operational processes and workflows across release management, incident response, remediation, exchange notification handling, and SLA enforcement
• Contribute to the stability and evolution of the global market data plant across both low-latency and non-latency-sensitive environments

Technologies:

• Hardware
• Support
• Linux
• Network
• Ruby

More:

We are Millennium, a global diversified alternative investment firm founded in 1989, driven by evolution, innovation, and a focus on delivering results for our investors. Our people are empowered with independence and support, backed by a global network committed to collaboration, disciplined risk management, and continuous learning. This role sits within our Information Technology organization and the SPEED Market Data team, which builds high-performance, real-time market data infrastructure supporting systematic trading across low-latency and enterprise environments.

last updated 36 week of 2026