Roles & Responsibilities
Network Infrastructure Engineer (Senior)
We are seeking an experienced and proactive Senior Network Operations Engineer to take charge of managing and evolving our organization's network systems. This role is pivotal in maintaining a secure, high-performing, and highly available network infrastructure across all operational environments. The ideal candidate will bring strong technical skills, a process-oriented mindset, and the ability to support both ongoing operations and strategic IT projects.
RESPONSIBILITIES :
Infrastructure Maintenance & Operations
- Administer and maintain complex, multi-environment network systems (production, development, disaster recovery) including routers, switches, firewalls, VPNs, and other security infrastructure.
- Coordinate the implementation of system patches, firmware updates, and security enhancements to mitigate risks.
- Track hardware / software end-of-life schedules and manage renewal of network credentials such as passwords and digital certificates.
Business Continuity & Network Resilience
Execute and validate scheduled network configuration backups and data protection measures.Drive disaster recovery planning efforts and oversee regular testing to ensure infrastructure readiness in the event of service disruptions.Technical Project Involvement
Serve as a technical lead or contributor for infrastructure-focused initiatives, ensuring timely deployment of networking solutions aligned with business goals.Manage infrastructure upgrades and system rollouts based on approved project frameworks and timelines.Incident & Fault Management
Act as a second-level escalation point for network issues, ensuring troubleshooting is completed promptly and effectively within SLA parameters.Perform root cause analysis and put in place preventative controls to reduce recurrence of known faults.Change Control & Deployment Oversight
Coordinate with internal stakeholders to plan and deploy network changes with minimal impact to service.Present proposed changes to Change Advisory Boards, clearly articulating risk assessments and expected outcomes.Configuration Management & Asset Tracking
Maintain an accurate, centralized record of hardware and software configurations across the network landscape.Support audits and internal reviews through proper documentation and version control.Capacity Planning & Performance Tuning
Continuously monitor usage metrics and network health to identify capacity constraints and performance issues.Apply tuning methodologies and scaling strategies to maintain system responsiveness and efficiency.Process Development & Compliance Alignment
Implement operational processes consistent with IT service management best practices and organizational security policies.Identify inefficiencies in workflows and propose improvements to strengthen system integrity and team effectiveness.Documentation & Knowledge Transfer
Develop and maintain detailed documentation for operational procedures, infrastructure blueprints, and troubleshooting playbooks.Contribute to internal knowledge-sharing and onboarding resources.REQUIREMENTS :
Minimum of 6 years’ experience managing network & security equipment such as Routers, Switches, Firewalls, VPN, Load Balancer, DNS, NAC in financial institutionsEither :
Cisco certifications such as CCNA (Cisco Certified Network Associate) and CCNP Enterprise (Cisco Certified Network Professional)Check Point’s CCSA (Certified Security Administrator)CCSE (Certified Cloud Security Engineer) for cloud-based security solutionsPalo Alto Networks credentials including PCNSA (Certified Network Security Administrator) and PCNSE (Certified Network Security Engineer)Fortinet’s NSE certifications, ideally up to Level 4 (Network Security Expert program)Please contact Sheralynn Tjioe at SheralynnT@charterhouse.com.sg for a confidential discussion.
Reg. No. R1878306
EA License no. : 16S8066
Only successful candidates will be notified.
Tell employers what skills you have
Switches
Troubleshooting
Hardware
CCNA
CCNP
Tuning
Compliance
Configuration Management
Networking
Performance Tuning
Routers
Disaster Recovery
Network Security
