Role Summary

At Citadel Securities, technology powers everything we do. From real-time market connectivity to ultra-low latency trading and risk systems, our infrastructure must be fast, reliable, and secure—at all times.

As an APAC Data Centre Site Engineer, you’ll be at the forefront of that mission. This is not just a data centre role—it’s a chance to design, deploy, and optimize infrastructure in high-performance environments where every millisecond matters. You’ll work directly with elite engineers, technologists, and traders to solve complex challenges that move global markets.

Location

Hong Kong

Objectives

Deploy and maintain cutting-edge hardware across APAC exchange colocation and general-purpose data centres
Lead onsite delivery for large-scale infrastructure rollouts, including racks, cabling, power, servers, and networking
Ensure seamless integration of servers, network switches, and storage systems into Citadel’s global trading stack
Troubleshoot and optimize infrastructure performance using advanced testing and diagnostic tools
Collaborate with global engineering teams to deliver scalable, reliable, and low-latency environments
Travel across the APAC region to support business-critical deployments and initiatives

Skills and Qualifications

Technical Skills

5+ years of hands-on experience in colocations and data centres, ideally in financial or high-performance environments
Deep understanding of hardware lifecycle management and maintenance across:
Servers: HP, Cisco, Dell, Supermicro, Lenovo
Network: Cisco, Arista, Raritan
Appliances: FSMLabs, Novasparks, Microchip, Safran
Storage: EMC/Dell, Isilon, NetApp, Pure
Smart electrical systems and PDUs
Strong colocation infrastructure knowledge: space planning, rack layouts, power/cooling design
Expertise in installing and cabling equipment (fiber/copper), including termination, testing, and certification
Familiarity with infrastructure diagnostic tools: OTDR, light meters, cable testers
Understanding of cross-connect deployment in colocation and exchange environments
Proficiency in Windows 11/10, MS Office; basic Linux knowledge a plus
Experience with baseboard management tools: ILO, iDRAC, or equivalent

Operational & Business Execution

Proven track record managing distributed data centre operations across multiple countries and time zones
Strong ability to plan and execute large-scale rollouts while maintaining strategic oversight
Experience bridging knowledge across server, network, and storage domains
Skilled in managing vendor relationships and evaluating colocation contracts
Organized and self-directed, with the ability to balance competing demands and ensure uptime
Familiarity with data centre safety standards and operational best practices
Excellent verbal and written communication in English; fluency in Mandarin, Cantonese, or Hindi is a strong plus
Willingness to travel frequently across the APAC region

Opportunities may be available from time to time in any location in which the business is based for suitable candidates. If you are interested in a career with Citadel Securities, please share your details and we will contact you if there is a vacancy available.

About Citadel Securities

Citadel Securities is the next-generation capital markets firm and a leading global market maker. We provide institutional and retail investors with the liquidity they need to trade a broad array of equity and fixed income products in any market condition. The brightest minds in finance, science and technology use powerful, advanced analytics to solve the market’s most critical challenges, turning big ideas into real-world outcomes.

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APAC Data Center Site Engineer

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