Senior Cyber Infrastructure Engineer (Network)
Ensign Infosecurity (Cybersecurity) Pte Ltd
Apply to this job Singapore Until 9/27/2026 5+ years exp H-1B sponsor history First posted July 29, 2026 Last posted July 29, 2026
Job description
Ensign is hiring !
Responsibilities
- Provide system & network infrastructure engineering and support from small to large scale security centric infrastructure projects
- Work closely with solution architects to define best approach for design and implementation of system and networks in physical and virtualized environments
- Responsible as point of escalation for technical problems and SME in areas including system security, network architectures, implementation and operations
- Lead technical implementation of new network and system solutions alongside project managers as well as fronting stakeholders like customers, telco and product partners
- Perform and validate system and network hardening and maintain baseline configuration documentations
- Lead ad-hoc activities such as major maintenance, migrations or disaster recovery
- Assist in compliance and audit activities for enforcement of policies, standards and procedures
- Take on the role of a mentor to junior engineers
Requirements
- Diploma/Degree in Engineering/Information System/Information Security from a recognized institution with 5 or more years of relevant working experience
- In-depth knowledge of networking foundations and industry standard IT protocols
- Strong experience in Windows, Linux and Vmware/HyperV systems
- Strong experience in Next-Gen Firewalls, VPN, switching/routing, load balancers and proxies
- Experience in windows server domain environment such as active directory, group policies, DNS/DHCP and SCCM etc.
- Hands-on experience in system and network security-related tasks such as hardening, patching, capacity planning and design
- In-depth knowledge in network and systems security
- Experience in scripting, resource capacity planning and system design will be an added advantage
- Good communication skills with driven and motivated working attitude
- Ability to excel and work effectively in a team
Preferred Skills /Qualities
- Professional information technology/security certifications such as ITIL, CCNA, CCNP, MCSE, VMware will be preferred but related qualification (i.e. CCIE, CISSP etc.) will be an advantage
- Certification in Microsoft, Vmware, Cisco, Checkpoint, Palo Alto, Fortinet, F5 products and technologies is desired
Other Special Working Conditions
- Able to be on standby after office hours
About this role
Summary
Design, implement, and support secure network infrastructure and lead technical projects.
Job title
Senior Cyber Infrastructure Engineer (Network)
Experience level
5+ years
Minimum experience
5+ years exp
Industry
it and cybersecurity
Location requirements
Singapore, remote work not mentioned
Salary
Not specified
Visa sponsorship
H-1B sponsor history
Management role
No
Skills & keywords
Required skills
networking foundations industry standard IT protocolsWindowsLinuxVmware/HyperVNext-Gen FirewallsVPNswitching/routingload balancersproxiesactive directoryDNS/DHCPSCCMsystem hardeningpatchingcapacity planning
Preferred skills
ITILCCNACCNPMCSEVMwareCCIECISSPMicrosoft certificationsVmware certificationsCisco certificationsCheckptPalo AltoFortinetF5
Specializations
networkingsystem securityvirtualizationfirewallsprotocols
Locations
Structured locations inferred from the posting.
Singapore
On-site City
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