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Open nowPosted 168 days ago

Networking & Security Engineer

Capula7 open roles

Where
Hong Kong
Work mode
On site
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Your applicationOpen nowNetworking & Security EngineerCapula · Hong Kong

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  2. 3.4%3 days
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  4. 14.3%14 days
  5. 33.7%30 days
This job: posted 168 days ago

The posting

We are seeking a hands-on Network & Security Engineer with deep expertise in Cisco networking, firewall management, and SD-WAN, combined with a strong security-first mindset. Networking and security are the core priorities of this role. The successful candidate will take a leading part in designing, maintaining, and strengthening the firm's network and security infrastructure in response to an increasingly sophisticated threat landscape, including emerging risks associated with AI.

This is a technically demanding role that combines hands-on network engineering with proactive security ownership. The successful candidate will act as a security-first thinker across everything they touch (from day-to-day network operations through to strategic infrastructure design) and will be expected to drive meaningful improvements to the firm's network architecture and defensive capabilities.

This role is office-based and requires five days per week on-site presence.

Key Responsibilities

  • Design, implement, and maintain the firm's network infrastructure, including Cisco routers, switches, firewalls, VPNs, and wireless systems, ensuring high availability, performance, and security at every layer.
  • Own and manage the firm's SD-WAN architecture, including deployment, configuration, optimisation, and ongoing management of SD-WAN fabric across all sites.
  • Manage and continuously improve firewall infrastructure, including rule-base management, policy design, segmentation, and regular firewall audits to ensure a tightly controlled network perimeter.
  • Lead the firm's security operations function, owning threat detection, incident response, and vulnerability management end-to-end, with network traffic analysis as a core input.
  • Monitor, triage, and respond to security events across the network and wider environment, including log analysis, anomaly detection, and threat hunting, with strong awareness of modern and AI-enabled attack vectors.
  • Own and drive security hardening across network devices, servers, endpoints, and cloud-adjacent systems, ensuring consistent application of best practices and compliance with security policies.
  • Design secure network architecture, embedding segmentation, access control, and security requirements from the outset rather than retrofitting them.
  • Conduct regular network and vulnerability assessments and penetration testing exercises, prioritising and remediating findings in a timely manner.
  • Manage and continuously improve security tooling, including SIEM, EDR, IDS/IPS, and endpoint protection platforms, with particular focus on integration with network infrastructure.
  • Act as the escalation point for network and security-related incidents across 2nd and 3rd line, providing expert guidance and driving resolution.
  • Operate across Windows and Linux (Red Hat/CentOS) environments, ensuring both are maintained to a consistent security baseline and integrate cleanly with network infrastructure.
  • Collaborate with infrastructure and technology teams to embed secure network design into project delivery and BAU processes.
  • Develop and maintain network and security documentation, including network diagrams, firewall rule documentation, incident response playbooks, SOPs, and runbooks.
  • Stay current with evolving networking technologies and the threat landscape, bringing proactive recommendations to improve the firm's network architecture and security posture over time.
  • Participate in an on-call rotation to support critical network and security systems and respond to incidents outside business hours.

Requirements

  • Minimum 7+ years’ experience in infrastructure, networking, and security roles
  • Strong hands-on experience with Windows Server and Linux (Red Hat/CentOS)
  • Solid networking knowledge, including TCP/IP, VLANs, VPNs, DNS, DHCP, with practical experience in Cisco environments
  • Demonstrated experience implementing and supporting security controls, including:
  • Patch management and system hardening
  • Endpoint protection and monitoring
  • Identity and access management
  • Good understanding of cyber security principles, including modern threat landscapes and evolving risks (e.g. automation and AI-driven attack vectors)
  • Experience with virtualisation (VMware) and enterprise storage (SAN/NAS)
  • Scripting or automation experience (e.g. PowerShell, Bash) is advantageous
  • Experience in financial services or regulated environments is preferred
  • Strong troubleshooting skills with a structured and analytical approach
  • Able to balance BAU responsibilities with project delivery effectively
  • A thoughtful and forward-looking mindset, with the ability to identify risks and propose improvements
  • Clear and confident communicator, able to engage with both technical and non-technical stakeholders
  • Self-motivated, accountable, and willing to take ownership of issues end-to-end
  • Collaborative and adaptable, with a practical and solutions-focused approach
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