Md. Nahid Islam Chowdhury

.Enhance security services (hardware, software, policies) to ensure compliance with PCIDSS, SWIFT, ISO 27001, and local regulations. .Led SOC team, reducing security incidents by 30% through analysis, hunting, and incident management. .Conduct monthly vulnerability scans across 1500 systems, remediating high-risk vulnerabilities, reducing risk by 25% annually. .Collaborate with IT teams on patch management, improving security posture by 50%. Developed treatment plans for 90% of identified security risks.

• Manage real-time threats and incidents using SIEM (Splunk, McAfee Nitro), FortiGate IPS, Trend Micro Deep Security & Apex One, recommending countermeasures. • Conduct vulnerability assessments, threat management, monitoring, incident handling, investigation, and reporting from diverse log sources. • Perform quarterly OS/web app scans, penetration testing, and create reports on vulnerabilities. • Communicate effectively with technical and operational staff.

• Developing end-to-end project plans to guide the implementation of network infrastructure. • Balancing resource allocation, budgets, timelines, and potential risk factors that may impact project success • Operations and Maintenance of SDH, CWDM & DWDM transmission equipment • Optical fiber cable fault repair activities, Carry out Preventive & Corrective Maintenance • Strong understanding on different routing and routed protocols, BGP, VRRP, MPLS

• Testing, commissioning and fault isolation of circuits at various transmission rates • Operations and Maintenance of SDH, CWDM & DWDM transmission equipment • Optical fiber cable fault repair activities, Carry out Preventive & Corrective Maintenance • Maintaining database of transmission & datacom equipment

• Perform first-level remote troubleshooting for Transmission and BSS faults using basic diagnostic methods. • Ensure project delivery meets KPIs for Transmission and Access Networks. • Monitor alarms on SDH (HUAWEI Optix T2000), PDH (Stratex ProVision), and CDMA networks (iManager M2000). • Collaborate with O&M teams to minimize outage times and resolve network issues promptly