{"id":842201,"url":"https://alion.io/job/capulaglobal-networking-security-engineer","title":"Networking & Security Engineer","company":{"id":670203,"name":"Capula Investment Management","domain":"capulaglobal.com","url":"https://alion.io/company/capulaglobal","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":{"grade":"B","score":75,"open_postings":4,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-11-03T05:54:40Z"}},"role":"Security","role_family":"Security","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Hong Kong"],"countries":["HK"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Anomaly Detection","optional":false},{"name":"Bash","optional":false},{"name":"CentOS Stream","optional":false},{"name":"DHCP","optional":false},{"name":"DNS","optional":false},{"name":"Linux","optional":false},{"name":"PowerShell","optional":false},{"name":"Red Hat","optional":false},{"name":"SIEM","optional":false},{"name":"TCP/IP","optional":false},{"name":"VMWare","optional":false},{"name":"Windows","optional":false},{"name":"Windows Server","optional":false}],"status":"live","first_seen_at":"2026-04-17T00:00:00Z","employer_posted_date":"2026-04-17","last_verified_at":"2026-11-04T03:22:32Z","board_verified":true,"closed_at":null,"days_open":201,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":200},"description":"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.\nThis 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.\nThis role is office-based and requires five days per week on-site presence.\nKey Responsibilities\nDesign, 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.\nOwn and manage the firm's SD-WAN architecture, including deployment, configuration, optimisation, and ongoing management of SD-WAN fabric across all sites.\nManage and continuously improve firewall infrastructure, including rule-base management, policy design, segmentation, and regular firewall audits to ensure a tightly controlled network perimeter.\nLead 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.\nMonitor, 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.\nOwn and drive security hardening across network devices, servers, endpoints, and cloud-adjacent systems, ensuring consistent application of best practices and compliance with security policies.\nDesign secure network architecture, embedding segmentation, access control, and security requirements from the outset rather than retrofitting them.\nConduct regular network and vulnerability assessments and penetration testing exercises, prioritising and remediating findings in a timely manner.\nManage and continuously improve security tooling, including SIEM, EDR, IDS/IPS, and endpoint protection platforms, with particular focus on integration with network infrastructure.\nAct as the escalation point for network and security-related incidents across 2nd and 3rd line, providing expert guidance and driving resolution.\nOperate across Windows and Linux (Red Hat/CentOS) environments, ensuring both are maintained to a consistent security baseline and integrate cleanly with network infrastructure.\nCollaborate with infrastructure and technology teams to embed secure network design into project delivery and BAU processes.\nDevelop and maintain network and security documentation, including network diagrams, firewall rule documentation, incident response playbooks, SOPs, and runbooks.\nStay current with evolving networking technologies and the threat landscape, bringing proactive recommendations to improve the firm's network architecture and security posture over time.\nParticipate in an on-call rotation to support critical network and security systems and respond to incidents outside business hours.\nRequirements\nMinimum 7+ years’ experience in infrastructure, networking, and security roles\nStrong hands-on experience with Windows Server and Linux (Red Hat/CentOS)\nSolid networking knowledge, including TCP/IP, VLANs, VPNs, DNS, DHCP, with practical experience in Cisco environments\nDemonstrated experience implementing and supporting security controls, including:\nPatch management and system hardening\nEndpoint protection and monitoring\nIdentity and access management\nGood understanding of cyber security principles, including modern threat landscapes and evolving risks (e.g. automation and AI-driven attack vectors)\nExperience with virtualisation (VMware) and enterprise storage (SAN/NAS)\nScripting or automation experience (e.g. PowerShell, Bash) is advantageous\nExperience in financial services or regulated environments is preferred\nStrong troubleshooting skills with a structured and analytical approach\nAble to balance BAU responsibilities with project delivery effectively\nA thoughtful and forward-looking mindset, with the ability to identify risks and propose improvements\nClear and confident communicator, able to engage with both technical and non-technical stakeholders\nSelf-motivated, accountable, and willing to take ownership of issues end-to-end\nCollaborative and adaptable, with a practical and solutions-focused approach","description_format":"text","description_chars":4888,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Hedge Funds & Alternative Investments"],"lifecycle":[{"event":"open","at":"2026-09-12T22:21:37Z"}],"visa":[],"liveness":{"score":4,"band":"cold","label":"Long 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