Razeef Khan | Linux System Engineer
156, Obeysekarapura Road, Rajagiriya, Colombo.
Summary
As a dynamic professional with a dual role as a System Engineer and Site Reliability Engineer (SRE), I excel in optimizing and maintaining complex systems to ensure seamless operations. My skill set includes deploying web servers, automating processes, and managing virtualization technologies. I bring experience in scripting, configuration management, and cloud platforms like AWS, Azure, and GCP. My proactive approach, coupled with security awareness and teamwork, enables me to maintain industry best practices, enhance system performance, and contribute to achieving ISO 27001 Information Security standards.
Overview
12
12
years of professional experience
Work History
Senior System Operation Engineer
Circles Life
07.2022 - Current
- Implemented and maintained various Linux servers, ensuring smooth operation and high availability of critical services.
- Managed cloud infrastructure such as AWS, Azure, or GCP, and familiarized with their services and tools for infrastructure provisioning and management.
- Managed Terraform and Ansible to define infrastructure and configuration as code, enabling version-controlled and reproducible environments.
- Managing FortiGate Firewall.
- Monitored network performance, identified bottlenecks, and optimized network configurations to enhance efficiency.
- Installed and configured virtualization technologies (VMware/Hyper-V) to create and manage virtual machines.
- Developed and executed backup and disaster recovery strategies to safeguard data and ensure business continuity.
- Conducted regular security audits, implemented security measures, and monitored systems for potential threats.
- Automated routine tasks and workflows using scripting languages (PowerShell/Bash) to improve operational efficiency.
- Assisted in IT infrastructure planning and expansion to accommodate business growth and changing needs.
- Collaborated with cross-functional teams to deploy new applications and troubleshoot complex technical issues.
- Cluster operations on- Redhat Cluster & Database clusters.
- Involving server patching and system upgrading.
- Load Balancers: NGINX,AWS,GCP,OCI,Azure.
- Ticketing Systems: Jira.
- Other: Standard network services.
- Performed audits on Linux servers and took recommended actions to maintain system integrity and performance.
Assistant Engineer Opens System Platforms
Hayleys Fentons Ltd.
06.2018 - 07.2022
- Install and maintain Enterprise DB(PostgreSQL).
- Customize and Deployment of Open source Network Monitoring tools. Nagios/ Zabbix /Cacti.
- Deploying and maintain Postfix mail server on RHEL/Centos Linux.
- Installed & configured (create user accounts, aliases & distribution lists, backup mailboxes, add Instant Message services) Zimbra Open Source Mail Server on Suse Linux server and created a DR (Disaster Recovery) server using live sync method.
- Configure a Samba File server on SUSE Linux Enterprise Server to access Windows machines and enable user authentication.
- Installing and configuring Apache/Tomcat/Nginx web servers on Linux distributions (SUSE/Redhat).
- Perform audits on Linux servers and takes recommended actions to maintain industry best practices and archive ISO 27001 Information security standards.
- Deploying, Supporting & Maintaining Virtual machines on Linux Host using both KVM and Xen.
- Managing virtual hosts on VM-ware & Hyper-V.
- Automate processes such as daily backups, real-time data synchronizations, using bash shell scripts with cronjobs in Linux distributions.
- Box, VMware vSphere Client, Hyper-V manager, Putty, FTP client WinSCP, TeamViewer, and Remote Desktop.
- AWS Cloud.
System Engineer Linux
Fossmart (Pvt) Ltd.
06.2013 - 06.2018
- Deploying and maintain Postfix Mail server on RHEL/CentOS Linux.
- Installed & configured (create user accounts, aliases & distribution lists, backup mailboxes, add Instant Message services) Zimbra Open Source Mail Server on SUSE Linux server and created a DR (Disaster Recovery) server using live sync method.
- Configure a Samba File server on SUSE Linux Enterprise Server to access Windows machines and enable user authentication.
- Installing and configuring Apache/Tomcat/Nginx web servers on Linux distributions (SUSE/Redhat).
- Perform audits on Linux servers and take recommended actions to maintain industry best practices and archive ISO 27001 Information security standards.
- Deploying, Supporting & Maintaining Virtual machines on Linux Host using both KVM and Xen.
- Automate processes such as daily backups, real-time data synchronizations, using bash shell scripts with cronjobs in Linux distributions.
- Customize and Deployment Open source Network Monitoring tools. Grafana, Prometheus, Nagios/ Zabbix / Cacti.
- Virtual Box, VMware vSphere Client, Hyper-V manager, Putty, FTP client WinSCP, TeamViewer, and Remote Desktop.
Junior System Engineer
Fossmart (Pvt) Ltd
01.2013 - 06.2013
- Installing and configuring Apache/Tomcat/Nginx web servers on linux distributions (Suse/Redhat).
- Perform audits on Linux servers and take recommended actions in order to maintain industry best practices and archive ISO 27001 Information security standards.
- Deploying, Supporting & Maintaining Virtual machines on Linux Host using both KVM and XEN.
- Managing virtual hosts on VM-ware & Hyper-V.
Education
MSC - Network and Information Security
Kingston University
11.2024
Bachelor of Science - Information Technology
SLIIT
Colombo, Sri Lanka01.2013
Terraform for Cloud Infrastructures - undefined
Mindluster
08.2023
Online Kubernetes Lab for Beginners - undefined
Udemy Labs
04.2023
Google Cloud Computing Foundations - Networking & Security
Google Cloud
03.2023
Google Cloud Computing Foundations - Infrastructure
Google Cloud
03.2023
Google Cloud Computing Foundations - undefined
Google Cloud
03.2023
AWS Cloud Quest: Cloud Practitioner - undefined
AWS
09.2022
Microsoft Certified: Azure Fundamentals - undefined
01.2021
System Administrator RedHat - undefined
RedHat
03.2018
Skills
- Ubuntu
- RHEL
- Oracle Enterprise Linux
- Windows
- AWS
- GCP
- Azure
- OCI
- Ansible
- Terraform
- Docker
- Kubernetes
- MariaDB
- MySQL
- Bash
- Shell
- Apache
- Nginx
- Postfix
- Sendmail
- Zimbra
- Grafana
- Zabbix
- Nagios
- Manage Engine OpManager
- Vmware Workstation
- VirtualBox
- Wordpress
- IP Tables
- NFS
- CIFS
- Samba
- FTP
- SFTP
Personal Information
- Date of Birth: 12/15/88
- Nationality: Sri Lankan
Timeline
Senior System Operation Engineer
Circles Life
07.2022 - Current
Assistant Engineer Opens System Platforms
Hayleys Fentons Ltd.
06.2018 - 07.2022
System Engineer Linux
Fossmart (Pvt) Ltd.
06.2013 - 06.2018
Junior System Engineer
Fossmart (Pvt) Ltd
01.2013 - 06.2013
Terraform for Cloud Infrastructures - undefined
Mindluster
Online Kubernetes Lab for Beginners - undefined
Udemy Labs
Google Cloud Computing Foundations - Networking & Security
Google Cloud
Google Cloud Computing Foundations - Infrastructure
Google Cloud
Google Cloud Computing Foundations - undefined
Google Cloud
AWS Cloud Quest: Cloud Practitioner - undefined
AWS
Microsoft Certified: Azure Fundamentals - undefined
System Administrator RedHat - undefined
RedHat
MSC - Network and Information Security
Kingston University
Bachelor of Science - Information Technology
SLIIT
Similar Profiles
Siva Sankar Kothari Siva Sankar Kothari null
Senior Product Manager & UAT Specialist (Telco) at Circles LifeSenior Product Manager & UAT Specialist (Telco) at Circles Life
Quek York Hoong IvyQuek York Hoong Ivy
Team Coordinator at Circles LifeTeam Coordinator at Circles Life
Tarun KumarTarun Kumar
Principle Solution Architect at Circles Life PTE LTDPrinciple Solution Architect at Circles Life PTE LTD
PASINDU MALSHAN RAJASEKARAPASINDU MALSHAN RAJASEKARA
Senior Executive Officer at ICA CampusSenior Executive Officer at ICA Campus
Nivethini SriskandarajahNivethini Sriskandarajah
Office Assistant (offsite) at Image Collection (pvt) LtdOffice Assistant (offsite) at Image Collection (pvt) Ltd