Senior Trading System Support Engineer

Green Lake Executive Search Co. Limited; Hong Kong Island; On-site; HKD 600,000 - 980,000; Full time

Job summary

Green Lake Executive Search Co. Limited is assisting a Chinese-funded securities firm in Hong Kong to hire a Senior Trading System Support Engineer.

This role supports HK and global trading systems, covering daily operations, advanced technical support and system availability. You will coordinate with exchanges (HKEX) and vendors, run DR drills, and drive automation for health checks and monitoring using Python/Shell.

Qualifications

• 5–10 years in trading system operations or advanced technical support at HK financial institutions.
• Strong understanding of HK/global securities, futures and options workflows.
• Hands-on with Fidessa OMS/EMS; iAsia and/or eSunny futures platforms.
• Knowledge of HKEX trading/market data architecture: OCG, OMD, VCM/CAS.
• Fluent Mandarin or Cantonese; functional English for technical communication.

Responsibilities

• Coordinate with vendors on upgrades, hotfixes, performance testing and production changes.
• Prepare and execute HKEX/overseas exchange market rehearsals, mandatory drills and BCP/DR tests.
• Drive automation for health checks, monitoring and alerting using Python/Shell.
• Act as L2/L3 escalation for complex trading incidents, network dropouts and market data anomalies.
• Run morning pre-market checks, market-hours monitoring and EOD settlement support across securities, options and futures.
• Maintain trading gateways, HKEX OMD/market data feeds, FIX connectivity and third-party APIs.
• Support Trading Desk, Middle/Back Office and Risk; handle technical issues and requirements.
• Manage vendors, market data providers and telecom operators; support audits and compliance.
• Participate in architecture tuning and fault-tolerance improvement.

Skills

Python

Shell

Troubleshooting

Networking

English communication

Education

Bachelor's or Master's in Computer Science/IT/Financial Engineering

Tools

Fidessa OMS/EMS

iAsia

eSunny

HKEX OMD/market data

Job description

Senior Trading System Support Engineer supporting a Chinese-funded securities firm in Hong Kong. This role will support the firm's Hong Kong and global securities and futures trading systems, covering daily operations and maintenance, advanced technical support, system architecture optimization, disaster recovery drills, and collaboration with exchanges such as HKEX and system vendors. The successful candidate will help ensure high availability and business continuity of the trading platforms.

Key responsibilities

Coordinate with vendors (Fidessa, iAsia, eSunny) on upgrades, hotfixes, performance/UAT testing and production changes

Prepare and execute HKEX/overseas exchange market rehearsals, mandatory drills and BCP/DR failover tests

Drive automation for health checks, monitoring/alerting and operational tools using Python/Shell

Act as L2/L3 escalation for complex trading incidents, network dropouts and market data anomalies

Run morning pre-market checks, market-hours monitoring, troubleshooting and EOD settlement support across securities, options and futures

Maintain trading gateways, HKEX OMD/market data feeds, FIX connectivity and third-party APIs

Support Trading Desk, Middle/Back Office and Risk; handle technical issues and requirements

Manage vendors, market data providers and telecom operators; support SFC/HKEX audits and compliance

Participate in architecture tuning and fault-tolerance improvement

About you

Bachelor's/Master's in Computer Science, IT, Financial Engineering or related

At least 5-10 years in trading system operations or advanced technical support at HK financial institutions

Strong understanding of HK/global securities, futures and options workflows: order routing, clearing, settlement, risk control, market data

Hands-on with Fidessa OMS/EMS; iAsia and/or eSunny futures platforms

Knowledge of HKEX trading/market data architecture: OCG, OMD, VCM/CAS

Fluent Mandarin or Cantonese; functional English for technical communication

Strong pressure handling, logical analysis and fast troubleshooting