Network Security Engineer

Eclipse Trading is a leading proprietary trading firm. Founded in 2007, we have over 110 employees across 4 office locations – Hong Kong (our HQ), Sydney, Shanghai, and Chicago. Our trading expertise and strategies are deployed across several global markets, focusing on products including equity derivatives, delta one, ETFs, commodity derivatives, and cryptocurrency. Technology is inextricably linked to our trading strategies, creating an environment powered by intellectual curiosity, problem-solving, and innovation. We are looking for a passionate, technically talented individual with a strong background in networking and security platforms to join our Infrastructure and Technology Service team. The successful candidate will work closely with our trading support and development teams to ensure that our systems deliver the required performance, availability, and security posture. This is an onsite role located in Hong Kong, Shanghai or Sydney (with authorization to work in Shanghai or Sydney). Key Responsibilities Design, implement, and support enterprise network infrastructure across multiple sites. Manage and maintain Cisco routers and switches, including configuration, upgrades, and troubleshooting. Administer and optimize FortiGate firewalls, including policies, routing, VPNs, VDOMs, and security profiles. Manage FortiManager and FortiAnalyzer for centralized configuration, logging, reporting, and ADOM management. Perform advanced troubleshooting across IP networks, including packet‑ level analysis and protocol diagnostics. Review regulatory cybersecurity requirements (e.g., ASD Essential Eight, ISO 27001, NIST, or relevant financial ‑ sector regulator standards) and assess organizational compliance. Review and evaluate existing cybersecurity policies, procedures, and technical controls , identifying gaps and recommending improvements aligned with best practice and regulatory obligations. Drive cybersecurity uplift initiatives across the business, including secure configuration baselines, network segmentation, access control improvements, logging enhancements, and monitoring maturity. Work with data center providers on cabinet layouts, power requirements, cross‑ connects, and media types. Coordinate with telecommunications carriers for leased line provisioning, installation, testing, and handover. Integrate and support HP Synergy and Supermicro (SMC) SuperServer enclosures, including uplink design, fabric connectivity, and integration into core network infrastructure. Maintain accurate network documentation, diagrams, and asset records. Ensure network security best practices and compliance with organizational standards. What You Offer Minimum of 5 years’ hands ‑ on experience supporting enterprise networks, routing, switching, and firewall environments, ideally within quantitative funds, proprietary trading firms, exchanges, or financial market access vendors. Deep technical capability, strong troubleshooting skills, and the ability to work with carriers, datacentres, and internal stakeholders. Deep understanding of IP addressing, UDP, TCP/IP and traffic packet flow analysis, troubleshooting skills (TCPDump/Wireshark) Routing protocols: BGP, EIGRP, static routing, route redistribution, NAT Extensive experience with FortiGate firewalls, including VDOMs and ADOMs, Security policies and profiles, IPSec VPN, and High availability (HA) Proficiency with FortiManager and FortiAnalyzer for centralised management and reporting. <li data-leveltext="" data-font="Symbol" data-listid="1" data-list-defn-props="{"335552541":1,"335559685":720,"335559991":