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nexustenjin

Nexus

@nexustenjin

Network Security, System, and Cyber Security Specialist

Bangladesh
English
About me
Network & Cybersecurity Engineer with 16+ years of experience delivering secure, high-availability network infrastructures across banking, telecom, government, and defense sectors. Specialized in NGFW, SDN, and IP/MPLS using Palo Alto, Juniper, Cisco, Fortinet, SIEM(JSA, RSA, QRadar, FortiAnalyzer, FortiSIEM), Arrey, Barracuda, Trend Micro, Symantec, Blue Coat, Ruckus, Mist, Trapeze Wireless, VA/PT(Metasploit, Rapid7, Nessus, Core Impact ), VMware, Hyper-V, Nutanix, and F5 technologies. Focused on performance optimization, security hardening, and scalable design. ... Read more

Skills

n
nexustenjin
Nexus
Offline • 

See my services

Support & IT
I will perform enterprise network security assessment and firewall review
Technical Support
I will cybersecurity and network infrastructure consultancy

Portfolio

Work experience

Freelancing_Career

Freelancing Career

Full-time • 13 yrs 3 mos

Senior Lead Engineer

Jan 2017 - Present9 yrs 5 mos

• Provide consultation on network security and virtualization solutions, including designing network segmentation like MZ, DMZ, EXTRANET, INTRANET, systems hardening, implementing encryption, and Identity and Access Management. Develop high and low-level design documents, IP designs, and migration plans for cyber security solutions, ensuring physical and logical security. • As a leader of the Security Operations and Engineering team, I have successfully delivered security services and core network implementation to a diverse set of customers. • Hiring, team management, performance reviews, appraisals, and improving overall team performance by implementing training programs, sharing R&D knowledge, and mentoring. • Responding to all system and security breaches. Ensuring that the organization's data and infrastructure are protected by enabling the appropriate security controls. • Building the lab on the EVE-NG platform, replicating the customer site problem or new requirements that eliminate physical device requirements, and avoiding production network interruption. • Leading team of engineers for planning, designing deploying, supporting, and managing a range of network and cyber security solutions, including SIEM, EDR, XDR, WAF, SOAR, SDSN, SDN with Controller, Intrusion prevention systems, Email-security, Endpoint protection, Secure Web Gateway, SSL Interceptor, WEB-PROXY, Forward-Proxy, SASE, Data leak protection, Virtualization and Vulnerability assessment.

Manager

Mar 2015 - Dec 20172 yrs 9 mos

Manager • Participating in creating the network and security strategic roadmaps by understanding the business needs and mapping technical objectives to customer needs. • Led the team in developing vendor-agnostic architecture blueprints, design specifications, migration plans, security, and operational best practices guidelines based on detailed requirements gathered onsite. • Maintaining positive customer relationships and ensuring customer satisfaction with network and security solutions. Building the lab on the EVE-NG platform, replicating the customer site problem or new requirements that eliminate physical device requirements, and avoiding Production network interruption. • Staying current with new renowned OEM technologies and industry trends to recommend upgrades and improvements to the network and security best practices. • Network Access Control (NAC) integration with wired/wireless infrastructure for (AAA) Radius, MS Active Directory, LDAP, and TACACS+, Controller-Based Wi-Fi solution with Mac-based dynamic vlan using Dot1X, Installed turnstile gate barrier with access control, on-prem ATP; Proxy Web server, Bandwidth shaper, Endpoint Security Manager.

Deputy Manager

Jan 2014 - Feb 20151 yr 1 mo

Deputy Manager • Understand customer requests and translate them into technical resolution. Manage the post-sales team, for any new technology stages, a POC, and share the knowledge with the team, and support them for any high-level Troubleshooting required. • Collaborate with the operations team to improve network visibility; Performance management and troubleshooting production issues. Prepare high & low-level designs for customers and design implementation guidelines • Implement and troubleshoot critical performance and stability issues for the Bank, IIG, IGW, GOVT-Project, and University campus data center solution.