Market Data Engineer

Millennium Management; Greater London; On-site; GBP 100,000 - 160,000; Full time

Job summary

Millennium is a global, diversified investment firm delivering results for investors. The SPEED Market Data team maintains high-performance, real-time market data infrastructure that supports systematic trading across low-latency and archival environments.

The Market Data Engineer will support enterprise-grade feeds, partner with traders and core tech, and help shape platform direction through automation, monitoring, and release practices. Strong Linux, networking, and SRE skills are essential.

Qualifications

• Experience supporting market data environments in a global org.
• Strong Linux, networking, and CPU architecture fundamentals.
• Hands-on SRE or operational automation experience.
• Monitoring, metrics, and incident remediation expertise.

Responsibilities

• Support and manage real-time market data environments, including vendor feeds.
• Partner with PMs, trading desks, and core tech teams to meet needs.
• Shape technical direction with platform enhancements and initiatives.
• Collaborate with hardware and software teams on low-latency processing.
• Improve platform performance to reduce latency and improve reliability.
• Design tools for monitoring, metrics, and self-service management.
• Strengthen release management, incident response, and SLA handling.
• Contribute to global market data plant stability across environments.

Skills

Market data concepts

Linux systems

Site reliability engineering

Automation and deployment

Networking

Programming/scripting

Education

Degree in Computer Science or related field

Tools

Bloomberg

Thomson Reuters

Job description

Market Data EngineerAbout MillenniumMillennium 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 TeamCore to the health and growth of our business, Millennium’s Information Technology organization develops flexible, scalable technology and advanced proprietary systems that support the firm’s active, multi-manager business model. Within this environment, the SPEED Market Data team is focused on high-performance, real-time market data infrastructure that underpins systematic trading. The team works across low-latency and enterprise environments to build, maintain, and enhance resilient market data systems with a strong emphasis on stability, accuracy, speed, and operational excellence.What You'll DoSupport and manage both enterprise and latency-sensitive real-time market data environments, including internal, vendor, and exchange-driven changesPartner with Portfolio Managers, trading desks, and core technology teams to support users of the market data platform and address evolving business needsHelp shape the team’s technical direction by driving platform enhancements and new engineering initiativesCollaborate with hardware and software engineering teams across the firm to build real-time market data processing and distribution systemsOptimize platform performance through network and systems programming techniques designed to reduce latency and improve reliabilityDesign and build tools that automate support and platform management, including monitoring, real-time and historical metrics, visualization, and self-service administrative capabilitiesStrengthen operational processes and workflows across release management, incident response, remediation, exchange notification handling, and SLA enforcementContribute to the stability and evolution of the global market data plant across both low-latency and non-latency-sensitive environmentsWhat You BringExperience 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 mechanismsTechnical background in developing and supporting complex market data systems, including platforms such as Bloomberg and Thomson ReutersHands-on site reliability engineering or operational expertise, including system administration, automation, measurement, and release or deployment managementExperience 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 experienceSolid understanding of Linux internals, networking, and CPU architecture, with the ability to apply that knowledge to high-performance systemsStrong prioritization, communication, relationship management, and ownership skills, with a detail-oriented approach in fast-moving, high-pressure environments