S. M. M. Hossain Mahmud

Experience

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  Accenture Communications Infrastructure Solutions Ltd, Dhaka, Bangladesh.

  Jan 2015 - Nov 2017

   Operation, maintenance and troubleshooting of Telenor (Telecommunication Company) 4 Business Unit (Grameenphone (Bangladesh), DIGI (Malaysia), DTAC (Thailand) & Telenor Pakistan (Pakistan)) and Telenor GSS Malaysia IT (DC & DR) Infrastructure management for Server, Storage and Backup inventory of these 4 Telecom Company. Operation, maintenance and troubleshooting of 4 BU’s production Servers Operating System management as per client’s requirement & doing hands on work in different production OS including RHEL 6.x & 7.x, Oracle Sun Solaris 10.x & 11.x & Microsoft Windows. Doing L2 work on User management, Solaris SVM, Linux, crontab editing, sudo administration, System hardening, daily server health check, kernel parameter tuning as per vendor suggestion, overall system performance tuning. Managing and ensuring all production servers data (DB, FS & Application) backup and recovery with SLA target of RTO and RPO using production level licensed backup technologies (Dell EMC Networker, EMC Avamar, HP Data Protector, Symantec NetBackup, Microsoft Data Protection Manager & Commvault Hitachi Data Security) for all 4 BU of Telenor. Administrative Management of the virtual technology platform including Red hat Virtualization, Oracle virtualization manager, Oracle Sun Solaris (ZPool, RPool), Oracle Sun Solaris LDOM, VMWARE and Hyper-V Technology. Capacity management of the technological resources as per client’s requirement and provide capacity report monthly and daily. Enterprise level Infrastructure service management including Incident management, Change management, Problem management & Inventory level configuration item update in database. Handling & provide resolution of critical & major level incident in Data Center with proper change management flow and provide proper RCA (Root Cause Analysis) to the clients for every specific incident. Show less  Operation, maintenance and troubleshooting of Telenor (Telecommunication Company) 4 Business Unit (Grameenphone (Bangladesh), DIGI (Malaysia), DTAC (Thailand) & Telenor Pakistan (Pakistan)) and Telenor GSS Malaysia IT (DC & DR) Infrastructure management for Server, Storage and Backup inventory of these 4 Telecom Company. Operation, maintenance and troubleshooting of 4 BU’s production Servers Operating System management as per client’s requirement & doing hands on work in different production OS including RHEL 6.x & 7.x, Oracle Sun Solaris 10.x & 11.x & Microsoft Windows. Doing L1 work on User management, Solaris SVM, Linux, daily server health check & overall system performance monitoring. Managing and ensuring all production servers data (DB, FS & Application) backup and recovery with SLA target of RTO and RPO using production level licensed backup technologies (Oracle Secure Backup, RMAN, Dell EMC Networker, EMC Avamar, HP Data Protector, Symantec NetBackup, Microsoft Data Protection Manager & Commvault Hitachi Data Security) for all 4 BU of Telenor. Enterprise level Infrastructure service management including Incident management, Change management, Problem management & Inventory level configuration item update in database. Handling & provide resolution of critical & major level incident in Data Center with proper change management flow and provide proper RCA (Root Cause Analysis) to the clients for every specific incident. Client communications about their queries regarding infrastructure domain and deliver the service with quality and worked with support in the case of massive disaster and recover the disaster. Show less

  • Infrastructure Analyst (Level 11)

    Oct 2016 - Nov 2017

  • Infrastructure Associate (Level 12)

    Jan 2015 - Sept 2016
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  Aamra Technologies Limited, Dhaka, Bangladesh.

  Dec 2017 - Feb 2019

  Senior System Engineer

   Provide remote and on-site enterprise level customer technical support & services by executing emergency incident resolution service plan for resolve the critical technical abnormality of Oracle Sun servers, Oracle Database, PostgreSQL Database, Oracle Sun storage & backup devices hardware & operating systems end in Data Center and Data Recovery Center. Implementation, Installation and readiness of Oracle Sun Servers including SPARC, x86 & Oracle Sun Blade servers all versions in Data center and ensure the production environment connectivity with LAN (Network Switch, Router & Firewall) & SAN (Storage array Switch) in data center to confirm the installation perfectly ready for Enterprise level production purposes. Implementation, Installation and readiness of different open source software (JBoss, Apache Tomcat, Apache Web Server, Open SSL, Wildfly etc.) in Production OS as per configuration requirement by clients. Provide remote and on-site customer technical support and services for production Servers Operating System management as per client’s requirement & doing hands on work in different production OS including RHEL 6.x & 7.x, Oracle Sun Solaris 10.x & 11.x. Doing L2 & L3 work on User management, Solaris SVM, Linux VM, Linux Cluster, host automation, crontab editing, sudo administration, System hardening, daily server health check, kernel parameter tuning as per vendor suggestion and overall system performance tuning. Managing and ensuring all production servers data (DB, FS & Application) backup and recovery with SLA target of RTO and RPO using production level licensed backup technologies (Oracle Secure Backup, RMAN, Dell EMC Networker, EMC Avamar, HP Data Protector, Symantec NetBackup, Microsoft Data Protection Manager & Commvault Hitachi Data Security) Responsible for project implementation and customer support for entire project life cycle with preparing project documentation for hardware level user acceptance test. Show less

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  BKash Limited

  Mar 2019 - now

  Assistant Lead Engineer