MD JAKARIA ISLAM KHAN
Dhaka
Summary
Results-oriented network engineer with 8+ years in banking and ISP environments, specializing in high-performance and secure network operations. Expertise in LAN/WAN, BGP, OSPF, MPLS, VPN, and network security, consistently optimizing performance and maintaining 24/7 uptime for mission-critical systems. Experienced in overseeing large-scale networks with over 2000 nodes, leveraging advanced monitoring solutions like SolarWinds, Nagios, Cacti, and SevOne. Committed to continuous learning and growth in dynamic technical environments.
Overview
7
7
years of professional experience
1
1
Certification
Work History
Network Analyst
Standard Charted Bank
Dhaka
03.2021 - Current
- Support LAN/WAN network consists of over 2500 users, 65 Branches/ATMs, and 600 network devices, including routers/switches/firewalls/IP telephony.
- Led the redesign and implementation of enterprise-wide network infrastructure that supported over 5000 users, enhancing network performance by 40%
- Raise and implement any network change activity in SNOW System
- Maintained CISCO TAC cases until closure of any network issue
- Ensure effective monitoring, maintenance, and administration of network, and security infrastructure systems.
- Performed 24/7 monitoring of network health using monitoring tools
- Maintained LAN and Wi-Fi services across branches and ATM booths.
- Configured and supported VPN users including secure laptop setup
- Diagnosing and replacing faulty hardware, including router, switch and controllers
- Designing and configuring device for new ATM or Branch Setup
- Spearheaded the migration of network operations to a hybrid cloud environment, increasing system scalability and reliability
- Implemented robust security measures, reducing network vulnerabilities by 40 percent, ensuring compliance with international security policies as per SCB standards.
- Planning, performing and evaluating regular Disaster Recovery planned testing, including H1 and H2 Dr. Drill
- Raising ticket on priority
- Monitoring the entire network infrastructure.
- Troubleshooting for LAN and other internet settings.
- Performing health check for CISCO routers and switches
- Maintained documentation, backups, and network logs, and prepared reports.
Senior Executive
A.K Khan Telecom
Comilla
02.2020 - 01.2021
- Oversaw systems for prominent ISP serving 5K+ corporate customers, ensuring reliable network performance.
- Designed and implemented new branch network setups across 10 locations, enhancing connectivity and reducing latency by 20%
- Managed routing maintenance and configuration for over 30 POPs, two IIGs, and more than six ISPs using BGP, OSPF, IS-IS, RIP, and IBGP protocols.
- Managed devices and maintained global BGP routing tables to ensure seamless network operations.
- Troubleshot critical network and system problems, restoring functionality and minimizing downtime.
- Performed problem determination and coordinated recovery efforts all network failure
- Provided high-level technical support for network issues, resulting in a 90% satisfaction rate from internal stakeholders
- Monitor, tune and report network performance.
- Configure different types of VPN (PPTP, IPSec, EoIP etc) for clients
- Configure and Maintain FTTH technology and devices like OLT, ONU.
Support Engineer
ICC Communication
Dhaka
08.2019 - 05.2019
- Configured, managed, and troubleshot Mikrotik and Cisco routers and Juniper and BDCOM switches to maintain network reliability.
- Oversaw network monitoring systems including Nagios, Cacti server, Smoke Ping, and Observium to ensure optimal performance.
- Implemented network performance benchmarks, which led to ongoing improvements and a 10% reduction in complaints
- Analyzed and monitored network data traffic patterns to predict potential bottlenecks and suggest improvements
- Designed LAN, WAN, and MAN networks to improve connectivity and streamline data flow.
- Provided internet services, ensuring reliable connectivity for customers.
Education
BSc. Engineering - Electrical and Electronics Engineering
Internation University Of Business Agriculture & Technology
Dhaka, Bangladesh04-2017
Skills
- Routing & Switching: BGP, OSPF, MPLS, VLAN, STP, HSRP
- Security: Firewall, VPN (IPSec/SSL, GRE), NAC (8021X), ACL
- Monitoring & Tools: SolarWinds, Nagios, Cacti, Wireshark
- Systems: Cisco, Juniper, MikroTik, Fortinet, Linux
- Network Operations: ITIL (Incident, Change, Problem Management), RCA, Performance Optimization
- Cisco SD-WAN & Versa SD-WAN: Deployment, Configuration & Troubleshooting
- Infrastructure: LAN/WAN, Data Center Operations, FTTH, IP Telephony (Avaya)
- Support: Troubleshooting, VPN Support, Hardware Installation, Documentation
- Utilized NetBrain for automated network mapping and root cause analysis
Certification
- CCNA (Cisco Certified Network Associate), 09/26, CSCO13643560
- CCNP- Enterprise Core, 09/26, CSCO13643560
- RHCSA (Red Hat Certified System Administrator), 02/22, 220-024-038
References
- Apuba Krishna Bala, Senior Manager, apurbakrishna.bala@sc.com, ET-Network, Standard Chartered Bank, +880 1730068824
- Syed Pear Mahmud, Head of Technology, syed-pear.Mahmood@sc.com
Training
Certified Ethical Hacker (CEH) v13 - Bootcamp
Standard Chartered Bank,
06/25: Hands-on bootcamp aligned with EC-Council standards focused on ethical hacking, vulnerability assessment, penetration testing, and security best practices.
Projects And Achievements
- GNAC 2.0 Rollout, Implementation of a full Network Access Control with 802.1x Authentication for 50 Branches for 200 accesses Switches
- LLSTS & HLSTS, Implement LLSTS and HLSTS for the Network infrastructure.
- DR Relocation Project, All infrastructure firewall, storage application connectivity and new device configuration.
- SAT (Security Assurance Test), Implement ICV & IVS Vulnerability fix for Routers & Switches as per Bank Compliance.
- Best Technical Innovation, Awarded for developing an automation script that streamlined network configuration tasks at Cisco Networks, leading to a 30% improvement in process efficiency.
Timeline
Network Analyst
Standard Charted Bank
03.2021 - Current
Senior Executive
A.K Khan Telecom
02.2020 - 01.2021
Support Engineer
ICC Communication
08.2019 - 05.2019
BSc. Engineering - Electrical and Electronics Engineering
Internation University Of Business Agriculture & Technology