Dafaallah Hussien, Devops Engineer

Dafaallah Hussien

Devops Engineer

Tamkeen Technologies

Location
Saudi Arabia - Riyadh
Education
Master's degree, Computer Science
Experience
11 years, 4 Months

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Work Experience

Total years of experience :11 years, 4 Months

Devops Engineer at Tamkeen Technologies
  • Saudi Arabia - Riyadh
  • My current job since May 2019

• Develop, Manage and maintain Kubernetes clusters lifecycle.
• Developing tools for automated build, test, deployment and management of the platform like Jenkins and ArgoCD.
• Deploying MinIO on kubernetes as distributed object storage server.
• Monitoring system events to ensure health, maximum system availability and service quality using • Prometheus and Grafana.
• Scanning container images for vulnerabilities in OS packages and application dependencies using Trivy.
• Deploying a production PostgreSQL high•availability cluster (based on Patroni and DCS(etcd)), automating with Ansible.
• Maintain documentation regarding configurations, operations and troubleshooting procedures.
• Dealing with some software like  JFrog artifactory, Jira tracking, and Slack.

Senior System Administrator at Expert Co. Ltd
  • Saudi Arabia - Riyadh
  • December 2018 to May 2019

• Development configuration management solution based on odoo framework and integrate it with DigitalOcean cloud platform and GitHub.
• Developing a general design for company's products in GitHub repositories facilitate push, pull and merging operations for developers.
• Monitoring and testing application performance for potential bottlenecks, identify possible solutions, and work with developers to implement those fixes.
• Write and maintain custom scripts to increase system efficiency and lower the human intervention time on any tasks.
• Provide 2nd and 3rd level support for company's customers.

Senior System Administrator at Nile Center for Technology Researches
  • Sudan - Khartoum
  • February 2013 to November 2018

• Management and maintenance of VMwareESXi and Proxmox virtualization.
• Implementing Odoo ERP on 20+ projects, varying in infrastructure design using HAproxy, Nginx and Pacemaker.
• Use Nagios and Zabbix to monitor services health and send alerts via email and SMS.
• Daily administrative activities related to systems infrastructure ( Install, administer, troubleshoot and maintain development, testing, staging, and production servers).
• Perform and implement full backup and disaster recovery strategies on daily bases in order to keep the company software safe and running using shell-scripting and Bacula.
• Configuring various Linux services like ( DHCP, DNS, NFS, FTP, SMTP and VPN).

Education

Master's degree, Computer Science
  • at University Of Khartoum
  • August 2015

Clarification can be made if needed

Bachelor's degree, Computer Science and Information Technology
  • at Sudan University Of Science And Technology
  • September 2011

Clarification can be made if needed

Specialties & Skills

System Monitoring
Clustering
PostgreSQL
Virtualization
Backups Techniques (Bacula, Shell Script and Commvault)
Storage Systems
Virtualization and Containerization (VMware Esxi, Proxmox, Docker and kubernetes))
Perl/Shell scripting (SH, BASH and TCSH)
DevOps Tools for Infrastructure Automation (Jenkins, Argocd, and Puppet)
Monitoring Systems (Nagios, Zabbix and PRTG)
Database Management System Administration (PostgreSQL)
OS installation, configuration, management and hardening security (Centos, Redhat, Ubuntu, Fedora )
Clustering, load balancer and High Availability (Pacemaker, Corosync, HAproxy, Apache2 and Nginx)
Network Services (TCP/IP, DHCP, NIS, DNS, NFS, LDAP, FTP, SSH, SMTP, SNMP, SSL, VPN, and HTTP)

Social Profiles

Personal Website
Personal Website

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Languages

Arabic
Native Speaker
English
Expert

Training and Certifications

ITIL v3 Foundation (Certificate)
Date Attended:
October 2016
HCNP – Routing and Switching (Training)
Training Institute:
Huawei
Date Attended:
October 2016

Hobbies

  • Association Football