Senior Network and IT Security Engineer

Who We Are

Princeton Digital Group (PDG) is a leading developer and operator of AI and cloud hyperscale data centers in Asia. Headquartered in Singapore, PDG has a presence across high-growth markets in the region including Singapore, Japan, India, Indonesia, China, Korea and Malaysia.

PDG is backed by some of the world's most reputed blue-chip investors - Warburg Pincus, a leading global private equity firm with a successful history of creating world-class technology, media, and telecommunications (TMT) and real estate platforms; Ontario Teachers Pension Plan (OTPP), Canada's largest profession pension plan; Mubadala Investment Company, a sovereign investor that manages a diverse global portfolio for the Government of Abu Dhabi and Stonepeak, a leading alternative investment firm specializing in infrastructure and real assets globally.

Why Join PDG

• Impact at Scale: Be part of a company that's enabling digital transformation of economies.
• Career Growth Without Borders: With operations across Asia Pacific and a fast-growing footprint, your next opportunity could be anywhere.
• Culture That Empowers: We foster a collaborative, inclusive environment where every voice is heard and every contribution matters.
• Commitment to Excellence: From governance to workplace safety, we hold ourselves to the highest standards because our people deserve nothing less.

PDG empowers individuals in every role to grow, lead, and leave a lasting impact.

Join us to build the digital future of Asia.

For more information, visit our website www.princetondg.com or follow us on LinkedIn.

We Are Looking For

PDG is seeking a Senior Network and IT Security Engineer to own the day-to-day operations and continuous improvement of our enterprise network across data center, WAN, and cloud environments. This is a hands-on role covering routing & switching, network security (firewalls/VPN), internet edge, monitoring, and resilience engineeringensuring high availability, performance, and strong security for business-critical services.

Your Job Responsibilities:

• Provide L2/L3 support for PDG's enterprise network (LAN/WAN, data center, internet edge, wireless where applicable, firewalls/VPN)monitoring, troubleshooting, and resolving incidents/requests within agreed SLAs.
• Design, implement, and continuously optimize campus and data center routing & switching (e.g., VLAN, STP, OSPF, BGP, VRF) to deliver stable, high-performance, and resilient connectivity.
• Run and enhance data center network connectivity (e.g., leaf-spine, LAG/MLAG), partnering with infrastructure teams to support compute and storage platforms.
• Own WAN and remote access services (MPLS/SD-WAN where applicable, IPSec/SSL VPN), including provider coordination, circuit turn-up, and end-to-end troubleshooting.
• Administer and strengthen network security controls (firewalls, segmentation, NAT, IDS/IPS, WAF, DDoS, secure access/Zero Trust), including device hardening aligned to PDG's security standards.
• Improve monitoring, alerting, and capacity planning (SNMP/telemetry, syslog, NetFlow); lead complex troubleshooting, problem management, and root-cause analysis to prevent repeat incidents.
• Collaborate with SOC/NOC on threat monitoring, log analysis, vulnerability assessments, and investigation/mitigation of network security incidents; produce clear post-incident RCA/CAPA reports.
• Support cloud/hybrid networking (e.g., Azure/AWS virtual networks, VPN/ExpressRoute/Direct Connect) and automate routine operations (e.g., scripting/Ansible) to standardize builds, backups, compliance checks, and reporting.
• Plan and deliver network changes (upgrades/migrations) via change management with risk and rollback plans. Partner closely with application and infrastructure teams, vendors, and service providers; participate in on-call and after-hours maintenance when required; and keep network/operations documentation current (diagrams, IP plans, policies, SOP/MOP/EOP, as-builts, handover notes).

Qualities You Should Have:

• Bachelor's degree in computer science/IT (or equivalent). Relevant certifications are a plus (e.g., CCNP/CCIE, Juniper JNCIP/JNCIE, Fortinet NSE, Palo Alto PCNSE, AWS/Azure Networking, ITIL).
• Minimum 8 years of network engineering experience, including hands-on operations and implementation in enterprise data center and WAN environments. Strong exposure to routing/switching, internet edge, network security, and network monitoring in 24/7 operations.
• Strong hands-on capability across enterprise routing/switching and WAN (TCP/IP, VLAN, STP, OSPF, BGP, MPLS/VPN), internet edge, and 24/7 troubleshooting; comfortable coordinating with telcos/ISPs and familiar with structured cabling fundamentals.
• Solid experience with data center networking (leaf-spine/spine-leaf, fabric concepts, redundancy) and common enterprise vendors (e.g., Cisco/Juniper/Arista/Aruba/Dell or equivalents).
• Hands-on experience with network security technologies (firewalls, IPS/IDS, WAF, DDoS, proxy/SWG) and security practices (segmentation/micro-segmentation, NAC/access control, Zero Trust, hardening, vulnerability assessment, incident response).
• Proactive, accountable, and collaborativewith strong troubleshooting/RCA, communication, and documentation skills. Able to drive changes/projects with vendors and stakeholders, mentor junior engineers, and participate in on-call/after-hours support.
• Familiarity with monitoring/alerting (SNMP/telemetry, syslog, flow), plus exposure to cloud/hybrid networking and automation (e.g., Azure/AWS, Python/PowerShell/Bash/Ansible) is preferred. Knowledge of governance/compliance frameworks (e.g., ISO 27001/20000/9001, PCI DSS, SOC 1/2) is an advantage.

In submitting this application for employment to PDG, you hereby acknowledge that you consent to the collection, use and/or disclosure (to relevant third parties) of your personal data by us for the purposes of evaluating this application [and for other potential vacancies in the future], you may inform us of any decision to withdraw such consent in the future by contacting [Confidential Information]. Please do not send your application to this email address.