Md. Obayed Hasan — Software Engineer

I am a Network & Security Engineer with 2+ years of hands-on experience in ISP backbone and International Internet Gateway (IIG) operations at Link3 Technologies Limited. I work in high-availability, multi-homed BGP environments where uptime, routing stability, and SLA compliance are mission-critical. My core expertise includes troubleshooting BGP flaps, OSPF instability, latency, congestion, and upstream routing anomalies across Cisco, Huawei, and MikroTik platforms. I am actively involved in DDoS detection and mitigation using Corero and Nexusguard, including RTBH implementation for malicious traffic control. My role requires real-time incident response, log analysis, and Root Cause Analysis (RCA) reporting in enterprise-scale infrastructure. Alongside backbone operations, I am continuously expanding my expertise into Cloud Computing (AWS) and Cybersecurity to align networking with secure, scalable infrastructure design. My technical focus areas include: Cloud Computing (AWS) • EC2 – Deploying and managing virtual servers • S3 – Storage architecture with access control policies • IAM – Secure identity and permission management • VPC – Designing isolated and scalable cloud networks • RDS – Managed database deployment • Auto Scaling & Load Balancing – High availability design • CloudWatch & CloudTrail – Monitoring and auditing • Route 53 – DNS and traffic routing Cybersecurity • Network Security – Firewall policies, VPN, secure protocols • DDoS mitigation and traffic filtering • Vulnerability assessment fundamentals • OWASP Top 10 awareness • Linux system hardening and access control • SIEM basics (log monitoring concepts) • Incident response and security event analysis • Encryption practices and multi-factor authentication Routing & Enterprise Networking • TCP/IP, OSI Model, DNS, DHCP • VLAN, STP, Inter-VLAN Routing • OSPF (multi-area), BGP (iBGP/eBGP), Route Reflector • IP planning and WAN connectivity I hold five MikroTik vendor certifications (MTCNA, MTCRE, MTCSE, MTCINE, MTCSWE) and have completed CCNA. I am currently progressing toward CCNP Enterprise to deepen my expertise in advanced routing, troubleshooting, and enterprise network architecture. My long-term goal is to specialize in secure network and cloud infrastructure, combining backbone engineering experience with cloud security design principles to build resilient, scalable, and protected systems. Open to enterprise networking, network security, and infrastructure-focused opportunities where performance and protection must go hand in hand.

Stackforce AI infers this person is a Network & Security Engineer specializing in ISP operations and cloud security.

Location: Mirpur, Dhaka, Bangladesh

Experience: 2 yrs