Senior Trading System Support Engineer

CGS International Holdings Limited; Hong Kong; On-site; HKD 700,000 - 1,100,000; Full time

Job summary

We are seeking a Senior Trading System Support Engineer to join our IT team in Hong Kong. The role focuses on daily operation, system maintenance, and advanced technical support for our securities and futures trading platforms, ensuring high availability and business continuity across global markets.

You will manage Fidessa OMS/EMS, iAsia, and eSunny platforms, perform pre-market health checks, monitor market activity, and assist with DR/BCP testing and vendor collaborations, including HKEX and

Qualifications

• Bachelor’s or Master’s degree in CS/IT/financial engineering or related.
• 5+ years in trading system ops or advanced tech support in HK.
• Deep understanding of trading workflows across HK/global markets.
• Proficiency with Fidessa, iAsia, and eSunny and HKEX market data architecture.

Responsibilities

• Perform pre-market health checks, market-hours monitoring, and EOD support across core trading systems.
• Escalate and resolve complex trading incidents and data anomalies.
• Manage Fidessa, iAsia, and eSunny platforms and integrations.
• Coordinate with vendors on upgrades, testing and deployments.
• Assist with DR/BCP testing and regulatory/compliance reviews.

Skills

Trading operations

Advanced technical support

Python scripting

Shell scripting

Linux/Unix admin

SQL querying

Vendor coordination

Regulatory compliance awareness

Education

Bachelor’s degree in Computer Science / IT / Financial Engineering

Master’s degree (preferred)

Tools

Fidessa OMS/EMS

iAsia Front-to-Back

eSunny futures platform

HKEX OCG gateway

OMD market data feed

VCM/CAS mechanisms

FIX engine/connectivity

Job description

Job Title: Senior Trading System Support Engineer

Location: Hong Kong

Reporting to: Head of IT

Job Description

We are looking for an experienced and technically proficient Senior Trading System Support Engineer to join our IT team. This role will be primarily responsible for the daily operation and maintenance, advanced technical support, system architecture optimization, disaster recovery drills, and efficient collaboration with exchanges (e.g., HKEX) and system vendors for our Hong Kong and global securities and futures trading systems, ensuring high availability and business continuity of the trading platforms.

Responsibilities

1. Trading System Operations & Advanced Technical Support

Responsible for morning pre-market health checks, market-hours monitoring, troubleshooting, and End-of-Day (EOD) settlement support across core trading systems (Securities, Options, Futures, etc.).

Serve as an advanced technical escalation point (L2/L3) to independently and efficiently resolve complex trading incidents, network dropouts, or market data anomalies.

Proficiently manage and maintain Fidessa institutional trading/Order Management System (OMS/EMS), iAsia front-to-back office system, and eSunny futures trading system.

Respond to and handle technical requirements and complex issues from the Trading Desk, Middle/Back Office, and Risk Management departments.

Maintain trading gateways, market data feeds (e.g., HKEX OMD), FIX engine/connectivity, and third-party API integrations.

Participate in trading system architecture optimization and tuning to help enhance system performance and fault tolerance.

Drive infrastructure automation initiatives by writing Python/Shell scripts to develop automated health check, monitoring/alerting, and auxiliary operational tools.

Improve incident response mechanisms by writing and updating advanced operational documentation, emergency response playbooks, and system checklists.

Responsible for the preparation, coordination, and execution of Market Rehearsals, Mandatory Drills, and BCP/DR failover testing hosted by HKEX and overseas exchanges.

Coordinate with system vendors (ION/Fidessa, iAsia, eSunny, etc.) on system upgrades, hotfixes, performance testing, UAT testing for new features, and production change management.

Serve as the core technical contact to maintain effective communication with vendors, market data providers, and telecom operators, tracking and driving the resolution of complex vendor issues.

Assist with technical audits and compliance reviews to ensure system configurations and connectivity comply with regulatory and cybersecurity requirements of the Securities and Futures Commission (SFC) and HKEX.

Qualifications & Requirements

1. Education & Experience

Bachelor’s or Master’s degree in Computer Science, Information Technology, Financial Engineering, or related disciplines.

5+ years of experience in trading system operations or advanced technical support within financial institutions in Hong Kong (Chinese/foreign brokerages, futures firms, or trading system vendors).

Deep understanding of trading workflows across HK and global securities, futures, and options markets (order routing, clearing, settlement, risk control, market data distribution, etc.).

2. Core Technical Skills

Proficient in Fidessa trading system operational management, and/or master the front-to-back architecture of iAsia and eSunny futures platforms.

Proficient in HKEX trading and market data architecture (e.g., OCG trading gateway, OMD market data feed, VCM/CAS mechanisms, etc.).

Proficient in Linux/Unix administration, SQL querying, and skilled in Shell / Python scripting for task automation.

3. Soft Skills & Languages

Excellent ability to work under pressure, strong logical analytical skills, and fast troubleshooting capabilities during high-pressure situations.

Strong team spirit with effective communication and collaboration skills.

Language Requirements: Fluent in Mandarin or Cantonese, with a functional command of written and spoken English for reading, writing, and technical communication.

• We offer attractive remuneration package and fringe benefits to the right candidate.

All applications will be treated in the strictest confidence and personal data collected will be used for recruitment purpose only.

Unlock job insights

Hirer responsiveness Salary match Number of applicants

Your application will include the following questions:

• Which of the following statements best describes your right to work in Hong Kong?
• What's your expected monthly basic salary?
• How many years' experience do you have as a systems support engineer?
• How many years' experience do you have in the financial services industry?

We are the fast expanding subsidiary of China Galaxy Securities Company Limited, a leading securities company established in the PRC.

To cope with our business expansion, we are seeking high caliber candidates to join our team and grow with us:

We are the fast expanding subsidiary of China Galaxy Securities Company Limited, a leading securities company established in the PRC.

To cope with our business expansion, we are seeking high caliber candidates to join our team and grow with us:

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