Network Security Engineer

ALTEN Group is a world leader in Engineering and Technology consulting services providing outsourced Engineering, R&D, and IT Services for different industries such as Transportation, Defence, Energy and Security with 55,000 engineers in nearly 35 countries. ANOTECH is the subsidiary of the Group delivering ALTEN's Engineering Services in Singapore. As an L2 Network Security Engineer, you will participate in maintaining, troubleshooting, in-depth analysis of problems, and implementing solutions for a mission-critical 24x7 system. Responsibilities Preventive Maintenance for Network & Security Equipment Perform quarterly preventive maintenance (PM) for Network & Security Equipment Update and submit checklist after PM VAPT Support Conduct Vulnerability assessment using Nessus Validate scan completion and analyse findings Perform remediation planning and coordination Security Hardening and Configuration Review Remediation validation Reporting & Documentation for VAPT Quarterly Compliance Check Conduct vulnerability assessment on the systems across all sites using Nessus Perform remediation planning and coordination with Level 2 engineers IM8 Governance Compliance Ensure day-to-day operations comply with IM8 ICT Security Standards Support security assessments with Authority Maintain audit-ready documentation Support IM8 policy enforcement example patching SLAs Firewall Operations Manage policies, and troubleshoot traffic issues Support IPS/Threats modules Support logs extraction Perform firmware updates, patches, security fixes and vulnerability remediation Maintain up-to-date configurations Hardware Security Module Monitor HSM health and readiness Understand and able HSM to support cryptographic operations under strict governance and dual control Review and maintain HSM logs Manage HSM key management operation Perform firmware updates, patches, security fixes and vulnerability remediation SIEM Monitoring Configure SIEM to show high severity events as alerts on the dashboard Identify unusual patterns, anomalies, and suspicious events in the logs Ensure all critical systems send security logs to the SIEM Tuning and optimization of SIEM rules Develop and maintain / optimize dashboard for real-time display of alerts Perform firmware updates, patches, security fixes and vulnerability remediation Aruba Clearpass Monitoring Manage and maintain ClearPass Access Control policies Integrate Aruba Clearpass with Network infrastructure Maintain up-to-date configurations Perform firmware updates, patches, security fixes and vulnerability remediation Samsung Knox MDM Onboard new devices into Samsung Knox Configure and maintain MDM policies Manage approved application via Knox Monitor device compliance dashboard Manage deployment of certificates and rotation of certificates on the mobile devices Maintain accurate record of mobile device lifecycle management Perform application patches, security fixes and vulnerability remediation Maintain up-to-date configurations Incident & Problem Management Resolve P1/P2 issues within SLA Perform resolution and communications Perform root cause analysis and recommend permanent fixes Escalate unresolved issues that required software coding to Level 3 or engineering teams Ensure proper closure of incident and problem Change Management Perform operational impact assessment Present change in Change Advisory Board Pre-Change Preparation such as review Change Request and Release Plan Documentation update in the knowledge base Post change review and feedback Patch Management Perform patch management readiness Stakeholder coordination and team coordination System Readiness and Post-Patch Validation Documentation update and knowledge transfer Compliance and audit readiness Documentation and Compliance Operational documentation. SOPs, Incident response checklist, RCA, PIR, monitoring and alert guidebook Configuration & Infrastructure Documentation. System configuration baseline, application dependency maps, environment inventories such as hosts, services, accounts Knowledge Base Articles for level 2 enablement and faster resolution e.g. Known Errors and Fixes, Frequent How-To Guides, Script Repositories, Lessons Learned Maintain application documentation Knowledge Management Configuration Management Perform validation and accuracy of configurations Maintain readiness of operational documentation Perform audit to confirm compliance of configurations CMDB asset verification Change-linked configuration tracking Ensure environment consistency between DEV – IVVQ – ISO-PROD – UAT and PROD Testing and Verification Ensure operational readiness testing before production deployment rollout Ensure post-change verification coordination Perform regression and sanity test following patching or upgrades, in UAT and PROD Participation in user acceptance testing Knowledge Management Documentation of resolution Knowledge Base Contribution Validation of knowledge Subject Matter Expertise Sharing Root Cause Analysis Gather logs, system metrics at the time of failure Reproduction of issues in a controlled environment to understand the conditions under which it occurs Determine the scope and severity in terms of the systems affected, downtime duration and business impact Narrow down the possible sources of causing the failure Use of diagnostic tools such to analyse the application behaviour Correlation of events to sequence the chain of events leading up to the failure and identify the dependencies Work Schedule Require rotational on-call duty support Available for graveyard hours change request deployment as scheduled Knowledge, Skills and Experience Diploma / Bachelor Degree in Cybersecurity, Information Technology, Computer Science, Engineering, or a closely related discipline At least 2-5 years in Level 2 support for mission critical 24x7 production support, preferably in public sector Proven experience in handling P1/P2 incidents, managing post-incident reviews (PIRs) and root cause analysis Preferably certification in Check Point / Palo Alto firewall, Cisco CCNA, Aruba, LogRhythm Analyst Strong understanding of IM8 compliance reporting, audit evidence and configuration traceability High Accountability & Ownership Strong composure under intense pressure Emotional Resilience Careful & Attention to Details Highly Discipline in following SOPs and instructions Continuous Learner High Integrity and Professionalism Initiative and Proactiveness Service-oriented mindset #J-18808-Ljbffr