Linux Low Latency Systems Engineer

Millennium Management LLC; Hong Kong; On-site; HKD 600,000 - 1,200,000; Full time

Job summary

Millennium is seeking a Linux Low Latency Systems Engineer to support and evolve a high-performance trading platform. You will work in a globally deployed team, focusing on stable infrastructure, incident resolution, and performance optimization.

You bring 5+ years in financial tech, deep Linux expertise, and strong scripting with Python/Bash; Ansible and related tools are a plus. This role is based in Hong Kong with on-site responsibilities.

Qualifications

• 5+ years in financial technology services, including 3+ years supporting low-latency trading systems.
• Deep Linux systems engineering with performance tuning, low-latency networking, BIOS/kernel tuning.
• Experience with enterprise server platforms, VMware ESXi/vCenter, DNS and time synchronization (NTP/PTP).
• GPU/CUDA experience for Linux infrastructure and performance-sensitive workloads.
• Strong Python and Bash, with Ansible; Chef, Puppet, Terraform a plus.
• Proven ability to troubleshoot across the stack and document ops clearly.
• Bachelor's degree or equivalent; RHCE, cloud experience, Windows–Linux interoperability a plus.

Responsibilities

• Support and maintain Linux, virtualization, and related infrastructure as part of a global team.
• Build, operate, and improve a high-performance, low-latency trading platform with partners.
• Identify, prioritize, and resolve complex incidents; address root causes to prevent recurrence.
• Gather requirements, evaluate options, and implement solutions aligned with platform needs.
• Deliver clear documentation and participate in on-call support as needed.

Skills

Linux

Low-latency trading

Networking

Python

Bash scripting

SRE practices

Incident management

Documentation

Communication

Education

Bachelor's degree in Engineering or CS

RHCE

Cloud-platform experience

Windows–Linux interoperability exposure

Tools

VMware ESXi/vCenter

NVIDIA CUDA

OpenOnload

Ansible

Terraform

Chef

Puppet

DNS & NTP/PTP time sync

Solarflare OpenOnload

Job description

Linux Low Latency Systems 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 active, multi-manager business model depends on flexible, scalable technology and advanced proprietary systems. Within that environment, the Latency Critical Trading team delivers high-performance trading capabilities through core infrastructure, software development, automation, security, and cloud-based services. The team brings together experienced C++, Linux, networking, and SRE professionals focused on building a stable, high-performing platform for portfolio managers, researchers, and technologists, with a strong emphasis on continuous improvement, technical excellence, and collaboration.What You'll DoSupport and maintain Linux, virtualization, and related infrastructure as part of a globally deployed engineering teamBuild, operate, and continuously improve a high-performance, low-latency trading platform in partnership with infrastructure and application support teamsIdentify, prioritize, and resolve complex incidents and service requests, while proactively addressing root causes to prevent recurrenceGather requirements, evaluate technical options, and implement solutions aligned with business and platform needsMonitor platform health and performance, investigate latency and performance issues using diagnostic tools, and drive remediationDeliver stable, repeatable, and high-performing Linux systems through automation and code-driven engineering practicesLead technical discussions, communicate clearly with stakeholders, and partner across engineering, development, and business teams to solve complex problemsProduce clear documentation, guide teammates on low-latency and high-performance computing concepts, and participate in off-hours on-call support as neededWhat You Bring5+ years of hands-on experience in financial technology services, including 3+ years supporting low-latency trading systems and scalable infrastructureDeep Linux systems engineering expertise, including performance tuning, low-latency networking, Solarflare OpenOnload, multicast networking, cgroups/cpusets, kernel parameters, and BIOS-level tuningHands-on experience with enterprise server platforms, VMware ESXi/vCenter, networking, DNS, and time-synchronization services including NTP, PTP, PPS, and WRNVIDIA GPU/CUDA experience for Linux infrastructure and performance-sensitive workloadsExperience using AI assistants in daily engineering work, including troubleshooting, coding/scripting, terminal workflows, and operational automationStrong Python and Bash scripting skills, with Ansible configuration-management experience; Chef, Puppet, and Terraform are a plusProven ability to troubleshoot across the technology stack, coordinate production changes across teams, and maintain clear documentation and operational excellence in fast-paced environmentsBachelor’s degree in Engineering, Computer Science, or a related field—or equivalent practical experience; RHCE, cloud-platform experience, and Windows–Linux interoperability exposure are a plus